CA2657288A1 - Phosphorus derivatives as histone deacetylase inhibitors - Google Patents

Phosphorus derivatives as histone deacetylase inhibitors Download PDF

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CA2657288A1
CA2657288A1 CA002657288A CA2657288A CA2657288A1 CA 2657288 A1 CA2657288 A1 CA 2657288A1 CA 002657288 A CA002657288 A CA 002657288A CA 2657288 A CA2657288 A CA 2657288A CA 2657288 A1 CA2657288 A1 CA 2657288A1
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amino
phenyl
thienyl
alkyl
carbonyl
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Inventor
Joshua Close
Jonathan Grimm
Richard W. Heidebrecht, Jr.
Solomon Kattar
Thomas A. Miller
Karin M. Otte
Scott Peterson
Phieng Siliphaivanh
Paul Tempest
Kevin J. Wilson
David J. Witter
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Merck Sharp and Dohme LLC
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    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
    • C07F9/02—Phosphorus compounds
    • C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
    • C07F9/6553—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having sulfur atoms, with or without selenium or tellurium atoms, as the only ring hetero atoms
    • C07F9/655345—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having sulfur atoms, with or without selenium or tellurium atoms, as the only ring hetero atoms the sulfur atom being part of a five-membered ring
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
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    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
    • C07F9/02—Phosphorus compounds
    • C07F9/28—Phosphorus compounds with one or more P—C bonds
    • C07F9/50—Organo-phosphines
    • C07F9/53—Organo-phosphine oxides; Organo-phosphine thioxides
    • C07F9/5304—Acyclic saturated phosphine oxides or thioxides
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
    • C07F9/02—Phosphorus compounds
    • C07F9/28—Phosphorus compounds with one or more P—C bonds
    • C07F9/50—Organo-phosphines
    • C07F9/53—Organo-phosphine oxides; Organo-phosphine thioxides
    • C07F9/5325—Aromatic phosphine oxides or thioxides (P-C aromatic linkage)
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    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
    • C07F9/02—Phosphorus compounds
    • C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
    • C07F9/645—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having two nitrogen atoms as the only ring hetero atoms
    • C07F9/6503—Five-membered rings
    • C07F9/65031—Five-membered rings having the nitrogen atoms in the positions 1 and 2
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
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    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
    • C07F9/02—Phosphorus compounds
    • C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
    • C07F9/6558—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom containing at least two different or differently substituted hetero rings neither condensed among themselves nor condensed with a common carbocyclic ring or ring system
    • C07F9/65586—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom containing at least two different or differently substituted hetero rings neither condensed among themselves nor condensed with a common carbocyclic ring or ring system at least one of the hetero rings does not contain nitrogen as ring hetero atom
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
    • C07F9/02—Phosphorus compounds
    • C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
    • C07F9/6564—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms
    • C07F9/6571—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus and oxygen atoms as the only ring hetero atoms
    • C07F9/657154—Cyclic esteramides of oxyacids of phosphorus
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    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
    • C07F9/02—Phosphorus compounds
    • C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
    • C07F9/6564—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms
    • C07F9/6571—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus and oxygen atoms as the only ring hetero atoms
    • C07F9/657163—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus and oxygen atoms as the only ring hetero atoms the ring phosphorus atom being bound to at least one carbon atom
    • C07F9/657181—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus and oxygen atoms as the only ring hetero atoms the ring phosphorus atom being bound to at least one carbon atom the ring phosphorus atom and, at least, one ring oxygen atom being part of a (thio)phosphonic acid derivative
    • C—CHEMISTRY; METALLURGY
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    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
    • C07F9/02—Phosphorus compounds
    • C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
    • C07F9/6564—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms
    • C07F9/6581—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus and nitrogen atoms with or without oxygen or sulfur atoms, as ring hetero atoms
    • C07F9/6584—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus and nitrogen atoms with or without oxygen or sulfur atoms, as ring hetero atoms having one phosphorus atom as ring hetero atom

Abstract

The present invention relates to a novel class of phosphorus derivatives. The phosphorus compounds can be used to treat cancer. The phosphorus compounds can also inhibit histone deacetylase and are suitable for use in selectively inducing terminal differentiation, and arresting cell growth and/or apoptosis of neoplastic cells, thereby inhibiting proliferation of such cells. Thus, the compounds of the present invention are useful in treating a patient having a tumor characterized by proliferation of neoplastic cells. The compounds of the invention may also be useful in the prevention and treatment of TRX-mediated diseases, such as autoimmune, allergic and inflammatory diseases, and in the prevention and/or treatment of diseases of the central nervous system (CNS), such as neurodegenerative diseases. The present invention further provides pharmaceutical compositions comprising the phosphorus derivatives and safe dosing regimens of these pharmaceutical compositions, which are easy to follow, and which result in a therapeutically effective amount of the phosphorus derivatives in vivo.

Description

TITLE OF THE INVENTION
PHOSPHORUS DERIVATIVES AS HISTONE DEACETYLASE INHIBITORS
FIELD OF THE INVENTION
The present invention relates to a novel class of phosphorus derivatives. The phosphorus compounds can be used to. treat cancer. The phosphorus compounds can also inhibit histone deacetylase and are suitable for use in selectively inducing terminal differentiation, and arresting cell growth and/or apoptosis of neoplastic cells, thereby inhibiting proliferation of such cells. Thus, the compounds of the present invention are useful in treating a patient having a tumor characterized by proliferation of neoplastic cells. The compounds of the invention can also be useful in the prevention and treatment of TRX-mediated diseases, such as autoimmune, allergic and inflammatory diseases, and in the prevention and/or treatment of diseases of the central nervous system (CNS), such as neurodegenerative diseases.

BACKGROUND OF THE INVENTION
Compounds having a hydroxamic acid moiety have been shown to possess useful biological activities. For example, many peptidyl compounds possessing a hydroxamic acid moiety are known to inhibit matrix metalloproteinases (1VUVIPs), which are a family of zinc endopeptidases. The MMPs play a key role in both physiological and pathological tissue degradation. Therefore, peptidyl compounds that have the ability to inhibit the action of 1VIMPs show utility for the treatment or prophylaxis of conditions involving tissue breakdown and inflammation. Further, compounds having a hydroxamic acid moiety have been shown to inhibit histone deacetylases (HDACs), based at least in part on the zinc binding property of the hydroxamic acid group.
The inhibition of HDACs can repress gene expression, including expression of genes related to tumor suppression. Inhibition of histone deacetylase can lead to the histone deacetylase-mediated transcriptional repression of tumor suppressor genes. For example, inhibition of histone deacetylase can provide a method for treating cancer, hematological disorders, such as hematopoiesis, and genetic related metabolic disorders.
More specifically, transcriptional regulation is a major event in cell differentiation, proliferation, and apoptosis.
There are several lines of evidence that histone acetylation and deacetylation are mechanisms by which transcriptional regulation in a cell is achieved (Grunstein, M., Nature, 389: 349-52 (1997)). These effects are thought to occur through changes in the structure of chromatin by altering the affinity of histone proteins for coiled DNA in the nucleosome.
There are five types of histones that have been identified. Histones H2A, H2B, H3 and H4 are found in the nucleosome, and H1 is a linker located between nucleosomes. Each nucleosome contains two of each histone type within its core, except for H1, which is present singly in the outer portion of the nucleosome structure. It is believed that when the histone proteins are hypoacetylated, there is a greater affinity of the histone to the DNA phosphate backbone. This affinity causes DNA to be tightly bound to the histone and renders the DNA inaccessible to transcriptional regulatory elements and machinery.
The regulation of acetylated states occurs through the balance of activity between two enzyme complexes, histone acetyl transferase (HAT) and histone deacetylase (HDAC).
The hypoacetylated state is thought to inhibit transcription of associated DNA.
This hypoacetylated state is catalyzed by large multiprotein complexes that include HDAC
enzymes. In particular, HDACs have been shown to catalyze the removal of acetyl groups from the chromatin core histones.
It has been shown in several instances that the disruption of HAT or HDAC
activity is implicated in the development of a malignant phenotype. For instance, in acute promyelocytic leukemia, the oncoprotein produced by the fusion of PML and RAR
alpha appears to suppress specific gene transcription through the recruitment of HDACs (Lin, R.J. et al., Nature 391:811-14 (1998)). In this manner, the neoplastic cell is unable to complete differentiation and leads to excess proliferation of the leukemic cell line.
U.S. Patent Numbers 5,369,108, 5,932,616, 5,700,811, 6,087,367 and 6,511,990, disclose hydroxamic acid derivatives useful for selectively inducing terminal differentiation, cell growth arrest or apoptosis of neoplastic cells. In addition to their biological activity as antitumor agents, these hydroxamic acid derivatives have recently been identified as useful for treating or preventing a wide variety of thioredoxin (TRX)-mediated diseases and conditions, such as inflammatory diseases, allergic diseases, autoimmune diseases, diseases associated with oxidative stress or diseases characterized by cellular hyperproliferation (U.S. Application No.
10/369,094, filed February 15, 2003). Further, these hydroxamic acid derivatives have been identified as useful for treating diseases of the central nervous system (CNS) such as neurodegenerative diseases and for treating brain cancer (See, U.S.
Application No. 10/273,401, filed October 16, 2002).
The inhibition of HDAC by the hydroxamic acid containing compound suberoylanilide hydroxamic acid (SAHA) disclosed in the above referenced U.S.
Patents, is thought to occur through direct interaction with the catalytic site of the enzyme as demonstrated by X-ray crystallography studies (Finnin, M.S. et al., Nature 401:188-193 (1999)). The result of HDAC inhibition is not believed to have a generalized effect on the genome, but rather, only affects a small subset of the genome (Van Lint, C. et al., Gene Expression 5:245-53 (1996)).
Evidence provided by DNA microarrays using malignant cell lines cultured with a HDAC
inhibitor shows that there are a finite (1-2%) number of genes whose products are altered. For example, cells treated in culture with HDAC inhibitors show a consistent induction of the cyclin-dependent kinase inhibitor p21 (Archer, S. Shufen, M. Shei, A., Hodin, R. PNAS
95:6791-96 (1998)). This protein plays an important role in cell cycle arrest. HDAC
inhibitors are thought to increase the rate of transcription of p21 by propagating the hyperacetylated state of histones in the region of the p21 gene, thereby making the gene accessible to transcriptional machinery.
Genes whose expression is not affected by HDAC inhibitors do not display changes in the acetylation of regional associated histones (Dressel, U. et al., Anticancer Research 20(2A):1017-22 (2000)).
Further, hydroxamic acid derivatives such as SAHA have the ability to induce tumor cell growth arrest, differentiation and/or apoptosis (Richon et al., Proc. Natl. Acad Scf.
USA, 93:5705-5708 (1996)). These compounds are targeted towards mechanisms inherent to the ability of a neoplastic cell to become malignant, as they do not appear to have toxicity in doses effective for inhibition of tumor growth in animals (Cohen, L.A. et al., Anticancer Research 19:4999-5006 (1999)).
In view of the wide variety of applications for compounds containing hydroxamic acid moieties, the development of new inhibitors having improved properties, for example, increased potency or increased bioavailability is highly desirable.

SUMMARY OF THE INVENTION
The present invention relates to a novel class of phosphorus derivatives. The phosphorus compounds can be used to treat cancer. The phosphorus compounds can also inhibit histone deacetylase and are suitable for use in selectively inducing terminal differentiation, and arresting cell growth and/or apoptosis of neoplastic cells, thereby inhibiting proliferation of such cells. Thus, the compounds of the present invention are useful in treating a patient having a tumor characterized by proliferation of neoplastic cells. The compounds of the invention may also useful in the prevention and treatment of TRX-mediated diseases, such as autoimmune, allergic and inflammatory diseases, and in the prevention and/or treatment of diseases of the central nervous system (CNS), such as neurodegenerative diseases. The present invention further provides pharmaceutical compositions comprising the phosphorus derivatives, and safe, dosing regimens of these pharmaceutical compositions, which are easy to follow, and which result in a therapeutically effective amount of the phosphorus derivatives in vivo.
It has been unexpectedly discovered that certain phosphorus derivatives show improved activity as histone deacetylase (HDAC) inhibitors.
The present invention thus relates to compounds represented by Formula I and pharmaceutically acceptable salts, solvates and hydrates thereof, as detailed herein.

(R3)t X
H

y (R$)p M B L N
O
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to a novel class of phosphorus derivatives. In one embodiment, the phosphorus derivatives can inhibit histone deacetylase and are suitable for use in selectively inducing terminal differentiation, and arresting cell growth and/or apoptosis of neoplastic cells, thereby inhibiting proliferation of such cells. Thus, the compounds of the present invention are useful in treating cancer in a subject. The compounds of the invention may also be useful in the prevention and treatment of TRX-mediated diseases, such as autoimmune, allergic and inflammatory diseases, and in the prevention and/or treatment of diseases of the central nervous system (CNS), such as neurodegenerative diseases.
It has been unexpectedly and surprisingly discovered that certain phosphorus derivatives, show improved activity as histone deacetylase (HDAC) inhibitors.
COMPOUNDS
The present invention relates to compounds represented by Formula I:
(R3)t X
M g Ll N
~ A (R5)p Wherein Ring A is a 5- to 6- membered heteroaryl or 6-membered aryl;
-4- .
With the proviso that Ring A is not tetrahydro-dioxo-pyrimidinyl;
Ring B is heteroaryl or aryl;
M is selected from:

~
O~p, h3, R' and ~~-O-Z-o D is a P(O) containing heterocyclyl, wherein the heterocyclyl is optionally substituted with at least one R";
R' and R2 are independently selected from -OR, -NR'R8, substituted or unsubstituted Ci-Clo alkyl, substituted or unsubstituted Cl-Cio alkenyl, substituted or unsubstituted Ci-Clo alkynyl, substituted or unsubstituted C3-Clo cycloalkyl, -(CRa AR9, -ORC(O)OR, -O(CRa2)rR9, -O(CRa2)rC(O)NR7 Rg, -O(CRa2)r NR7RB, and -O(CRa2)rOR;

or R' and R2 together with the phosphorous atom to which they are attached form a phosphorous-containing heterocyclic ring, wherein the heterocyclic ring is optionally substituted with at least one R";
or R2 and R6 together with the phosphorous and C atom to which they are respectively attached, form a heterocyclic ring, wherein the heterocyclic ring is optionally substituted with at least one R";
or R' and R4 together with the phosphorous and C atom to which they are respectively attached, form a heterocyclic ring, wherein the heterocyclic ring is optionally substituted with at least one R";
R3 is independently selected from hydrogen, -OR, -NR7R8, -NO2, -CN, -C(O)NR7RB, -NR7RBC(O)R, C(O), CI-C7 alkyl, CI-C7 haloalkyl, CI-C7 haloalkyloxy, C1-C7 hydroxyalkyl, CI-C7 alkenyl, CI-C7 alkyl-C(=O)O-, CI-C7 alkyl-C(=O)-, Cl-C7 alkynyl, halo, hydroxyalkoxy, Ci-C7 alkyl-NHSO2-, C1-C7 alkyl-SO2NH-, CI-C7 alkylsulfonyl, CI-alkylamino or di(CI-C7)alkykamino;
R4 and R6 are independently of each other hydrogen, -OR, -NR7 RB, halo, -CN, -C(O)NR'R8, -NR'RgC(O)R, -C(O)OR, -P(O)(OR)2, oxo, substituted or unsubstituted Ci-C6 alkyl, substituted or unsubstituted CI -Ca alkenyl, substituted or unsubstituted CI -Ca alkynyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heteroaryl, substituted or unsubstituted heterocyclic or substituted or unsubstituted aryl;
or R4 and R6 together with the C atom to which they are attached form a heterocyclic or carbocyclic ring, which can be optionally substituted with at least one R";

R5 is independently selected from hydrogen, OH, NH2, nitro, CN, amide, carboxyl, C1-C7 alkoxy, C1-C7 alkyl, C1-C7 haloalkyl, C1-C7 haloalkyloxy, C1-C7 hydroxyalkyl, C1-C7 alkenyl, CI-C7 alkyl-C(=O)O-, C1-C7 alkyl-C(=O)-, CI-C7 alkynyl, halo, hydroxyalkoxy, Ct-C7 alkyl-NHSO2-, CI-C7 alkyl-SO2NH-, CI-C7 alkylsulfonyl, C1-C7 alkylamino or di(Cl-C7)alkylamino or L2-R9, R' and Rg are independently selected from hydrogen, C1-C7 alkyl, -C(O)O-Cl-C7alkyl, -P(O)CRa2, -P(O)(OR)2, -(CRa2)rheteroaryl, -(CRa2)rheterocyclic, -(CRa2)r C3-C8 cycloalkyl and -(CRa2)raryl, where alkyl, heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one R11 I
R9 is independently selected from hydrogen, Ci-C7 alkyl, heteroaryl, heterocyclic, aryl, and C3-C8 cycloalkyl, where alkyl, heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one R11;

R11 is independently selected from OH, NH2, nitro, CN, amide, carboxyl, CI-C7 alkoxy, CI-C7 alkyl, Ci-C7 haloalkyl, CI-C7 haloalkyloxy, C1-C7 hydroxyalkyl, CI-C7 alkenyl, CI-C7 alkyl-C(=O)O-, CI-C7 alkyl-C(=O)-, CI-C7 alkynyl, halo, hydroxyalkoxy, CI-C7 alkyl-NHSOZ-, CI-C7 alkyl-SO2NH-, Ci-C7 alkylsulfonyl, CI-C7 alkylamino or di(CI-COalkylamino;
R is independently H, CI-C7 alkyl, or C3-CIo cycloalkyl, where alkyl or cycloalkyl is optionally substituted with at least one R11;

Ra is independently selected from H and CI-C7 alkyl, where C1-C7 alkyl is optionally substituted with at least one R11;
Ll is (CH2)r, ethenyl or cyclopropyl;

L2 is independently selected from a bond, CI -Ca alkylene, C,-C4 alkynyl, CI -Ca alkenyl, -0-, -S-, -N-, -C(=O)NH-, -NHC(=O)-, -NHC(=O)NH-, -SO2NH-, -NHSO2-, -SO2-, -C(=O)- or -C(=O)O- ;

0 is a bond, -(CRa2)rC(O)(CRa2)r-, -(CRa2)rO(CRa2)r, -(CRa2)rC(O)NR7(CRa2)r', -(CRa2)rNR7C(O)(CRa2)r-, -(CRa2)rNR7C(O)NR7(CRa2)i', -(CRa2)rOC(O)NR'(CRa2)r, -(CRa2)r NR7C(O)O(CRa2)r or -(CRa2)rNR7(CRa2)r -(CR4R)n-;

0 is a bond, -(CRa2)rC(O)(CRa2)L-, -(CRa2)rO(CRa2)r-, -(CRa2)rC(O)NR'(CRa2)r-, -(CRa2)rNR7C(O)(CRa2)r-, -(CRa2)rNWC(O)NR7 (CRa2)r, -(CRa2)rOC(O)NR'(CRa2)r-, -(CRa2)r NR7C(O)O(CRa2)r- or -(CRa 2)rNR7(CRa2)r -, -(CR R )n-;

X is SH or NH2;
Z is a bond, heteroaryl, heterocyclic, aryl, or C3-C8 cycloalkyl, where heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one R11;
n is 0, 1, 2, 3 or 4;
pis1,2,3or4;
r is independently 0, 1, 2 or 3;
tis 1,2,3,or4;
or a stereoisomer or pharmaceutically acceptable salt thereof.
In another embodiment of the invention, Ring A is a 5- to 6- membered heteroaryl or 6-membered aryl;
With the proviso that Ring A is not tetrahydro-dioxo-pyrimidinyl;
Ring B is heteroaryl or aryl;
M is selected from:

Rio P
R? ~~ I
O`p, L3 ` Z-. La~
Ri N`L3_Z,La O~P
1o \
R P~ b O L3_Z,La NL3_Z,L RRb , 4 L3'Z-0-P__L3_Z-L OO
' O
O 0, O
N (Rb)q ~ /P---',L3-Z~ R1P:
l L3~Z-L4-and ~
R' and RZ are independently selected from -OR, -NR7R8, substituted or unsubstituted Cl-Clo alkyl, substituted or unsubstituted Cl-Cio alkenyl, substituted or unsubstituted Cl-Cio alkynyl, substituted or unsubstituted C3-CIo cycloalkyl, -(CRa 2)rR9, -ORC(O)OR, -O(CRa2)rR9, -O(CRa2)rC(O)NR7R8 , -O(CRa2)I. NR7R8, and -O(CRa2)rOR;

or R' and R2 together with the phosphorous atom to which they are attached form a phosphorous-containing heterocyclic ring, optionally substituted with at least one R11;
or R2 and R6 together with the phosphorous and C atom to which they are respectively attached, form a heterocyclic ring, optionally substituted with at least one R11;
or R' and R together with the phosphorous and C atom to which they are respectively attached, fonn a heterocyclic ring, optionally substituted with at least one R11;
R3 is independently selected from hydrogen, -OR, -NR'R8, -NO2, -CN, -C(O)NR7R8, -NR7R8C(O)R, C(O), CI-C7 alkyl, CI-C7 haloalkyl, CI-C7 haloalkyloxy, CI-C7 hydroxyalkyl, CI-C=7 alkenyl, CI-C7 alkyl-C(=O)O-, CI-C7 alkyl-C(=O)-, CI-C7 alkynyl, halo, hydroxyalkoxy, Ci-C7alkyl-NHSO2-, Ct-C7alkyl-SO2NH-, CI-C7alkylsulfonyl, Ct-C7 alkylamino or di(CI-C7)alkylamino;
R4 and R6 are independently of each other hydrogen, -OR, -NR'RS, halo, -CN, -C(O)NR7RB, -NR'RgC(O)R, -C(O)OR, -P(O)(OR)2, oxo, substituted or unsubstituted CI-C6 alkyl, substituted or unsubstituted CI-C4 alkenyl, substituted or unsubstituted CI-Ca alkynyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heteroaryl, substituted or unsubstituted heterocyclic or substituted or unsubstituted aryl;
or R4 and R6 together with the C atom to which they are attached form a heterocyclic or carbocyclic ring, optionally substituted with at least one R11;
R5 is independently selected from hydrogen, OH, NH2, nitro, CN, amide, carboxyl, CI-C7 alkoxy, CI-C7 alkyl, CI-C7 haloalkyl, C1-C7 haloalkyloxy, CI-C7 hydroxyalkyl, CI-C7 alkenyl, CI-C7 alkyl-C(=O)O-, CI-C7 alkyl-C(=O)-, C1-C7 alkynyl, halo, hydroxyalkoxy, CI-C7 alkyl-NHSOZ-, CI-C7 alkyl-SO2NH-, C1-C7 alkylsulfonyl, CI-C7 alkylamino or di(Cl-C7)alkylamino or L2-R9, R7 and R8 are independently selected from hydrogen, CI-C7 alkyl, -C(O)O-C1-C7alkyl, -P(O)CRa2, -P(O)(OR)2, -(CRa2)rheteroaryl, -(CRa2)rheterocyclic, -(CRa2)r C3-C8 cycloalkyl and -(CRa2)raryl, where alkyl, heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one Rl l;
R9 is independently selected from hydrogen, CI-C7 alkyl, heteroaryl and aryl, where alkyl, heteroaryl or aryl is optionally substituted with at least one Rl l;

R10 is independently selected from hydrogen, CI-C7 alkyl, -(CRa2)rheteroaryl, .-(CRa2)rheterocyclic, -(CRa2)r C3-C8 cycloalkyl and -(CRa2)raryl, where alkyl, heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one R11 ;

RI I is independently selected from OH, NH2, nitro, CN, amide, carboxyl, CI-C7 alkoxy, C1-C7 alkyl, CI-C7 haloalkyl, CI-C7 haloalkyloxy, C1-C7 hydroxyalkyl, CI-C7 alkenyl, CI-C7 alkyl-C(=O)O-, CI-C7 alkyl-C(=O)-, Ci-C7 alkynyl, halo, hydroxyalkoxy, CI-C7 alkyl-NHSOz-, CI-C7 alkyl-SO2NH-, CI-C7 alkylsulfonyl, CI-C7 alkylamino or di(CI-C7)alkylamino;
R is independently H, Ci-C7 alkyl, or C3-CIo cycloalkyl, where alkyl or cycloalkyl is optionally substituted with at least one R11;

Ra is independently selected from H and CI-C7 alkyl, where CI-C7 alkyl is optionally substituted with at least one R11;

Rb is independently selected from H and C1-C7 alkyl, where CI -C7 alkyl is optionally substituted with at least one R11;
Ll is (CH2)r, ethenyl or cyclopropyl;

L2 is independently selected from a bond, Cl-C4 alkylene, CI-C4 alkynyl, C1-C4 alkenyl, -0-, -S-, -N-, -C(=O)NH-, -NHC(=0)-, -NHC(=O)NH-, -SOZNH-, -NHSO2-, -SO2-, -C(=O)- or -C(=O)O- ;

0 is a bond, -(CRa2)rC(O)(CRa2)r-, -(CRa2)rO(CRa2)r-, -(CRa2)rC(O)NR'(CRa2)r, -(CRa2)rNR7C(O)(CRa2)r, -(CRa2)rNR7 C(O)NR '(CRa2)r-, -(CRa2)rOC(O)NR7(CRa2)r-, -(CRa2)r NR7C(O)O(CRa2)r- or -(CRa2)rNR7(CRa2)r -(CR4R6)n-;

L4 is a bond, -(CRa2)rC(O)(CR'2)r-, -(CRa2)rO(CRa2)r-, -(CRa2)rC(O)NR7(CRa2)r-, -(CRa2)rNR'C(O)(CRa2)r, -(CRa2)rNR7C(O)NR'(CRa2)r, -(CRa2)rOC(O)NR'(CRa2)r-, -(CRa2)r NR7C(O)O(CRa2)r- or -(CRa2)rNR7(CRa 2)r -, -(CR4R)n-;

X is SH or NHZ;
Z is a bond, heteroaryl, heterocyclic, aryl, or C3-C8 cycloalkyl, where heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one R11;
n is 0, 1, 2, 3 or 4;
pis1,2,3or4;
q is l or 2;
r is independently 0, 1, 2 or 3;
t is 1, 2, 3, or 4;
or a stereoisomer or pharmaceutically acceptable salt thereof.
In another embodiment of the invention, Ring A is a 5- to 6- membered heteroaryl or 6-membered aryl;
With the proviso that Ring A is not tetrahydro-dioxo-pyrimidinyl;
Ring B is heteroaryl or aryl;
M is selected from:

01- L3 Z, L4/
R' N_L3_Z,L4 O
O, R1 \P
Rb Ls_La ~N__-O_Z-L4 Rb L3_Z-L4 00 Rb N ( )q ~ P\L3_Z,La , R7 and 0 Ri and R2 are independently selected from -OR, -NR7R8, substituted or unsubstituted Cl-C1 alkyl, substituted or unsubstituted Cl-Cl alkenyl, substituted or unsubstituted Ci-Clo alkynyl, substituted or unsubstituted C3-Clo cycloalkyl, -(CRa 2)rR9, -ORC(O)OR, -O(CRa2)rR9, -O(CRa2)rC(O)NR7RB, -O(CRa2)r NR~Rg, and -O(CRa2)rOR;

or R' and R2 together with the phosphorous atom to which they are attached form a phosphorous-containing heterocyclic ring;
or R 2 and R6 together with the phosphorous and C atom to which they are respectively attached, form a heterocyclic ring;
or R' and R4 together with the phosphorous and C atom to which they are respectively attached, form a heterocyclic ring;
R3 is independently selected from hydrogen, -OR, -NR'R8, -NO2, -CN, -C(O)NR7 RB, -NR'R8C(O)R, C(O), C1-C7 alkyl, CI-C7 haloalkyl, CI-C7 haloalkyloxy, C1-C7 hydroxyalkyl, CI-C7 alkenyl, Ct-C7 alkyl-C(=O)O-, CI-C7 alkyl-C(=0)-, C1-C7 alkynyl, halo, hydroxyalkoxy, Ci-C7 alkyl-NHSO2-, CI-C7 alkyl-SOZNH-, CI-C7 alkylsulfonyl, CI-alkylamino or di(C 1 -C7)alkylamino;
R and R6 are independently of each other hydrogen, -OR, -NR7R8, halo, -CN, -C(O)NR'R8, -NR'RgC(O)R, -C(O)OR, -P(O)(OR)2, oxo, substituted or unsubstituted C1-C6 alkyl, substituted or unsubstituted C,-Ca alkenyl, substituted or unsubstituted C1-C4 alkynyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heteroaryl, substituted or unsubstituted heterocyclic or substituted or unsubstituted aryl;
or R4 and R6 together with the C atom to which they are attached form a heterocyclic or carbocyclic ring;
R5 is independently selected from hydrogen, OH, NHZ, nitro, CN, amide, carboxyl, Cl-C7alkoxy, Ci-C7 alkyl, C1-C7 haloalkyl, Q-C7 haloalkyloxy, CVC7 hydroxyalkyl, Cl -C7 alkenyl, Q-C7 alkyl-C(=O)O-, C1-C7 alkyl-C(=O)-, C1-C7 alkynyl, halo, hydroxyalkoxy, Ci-C7 alkyl-NHSO2-, C1-C7 alkyl-SOZNH-, C1-C7 alkylsulfonyl, CI-C7 alkylamino or di(Cl-C7)alkylamino or L2-R9, R7 and R8 are independently selected from hydrogen, CI -C7 alkyl, -(CRa2)rheteroaryl, -(CRE12)rheterocyclic, -(CRa2)r C3-C8 cycloalkyl and -(CRa2)r.aryl, where alkyl, heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one Rl 1;
R9 is independently selected from hydrogen, C1-C7 alkyl, heteroaryl, heterocyclic, aryl, and C3-C8 cycloalkyl, where alkyl, heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one R11;

R10 is independently selected from hydrogen, C1-C7 alkyl, -(CRa2)rheteroaryl, -(CRa2)rheterocyclic, -(CRa2)r C3-C8 cycloalkyl and -(CRa2)raryl, where alkyl, heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one Rl 1;

Rl l is independently selected from OH, NHZ, nitro, CN, amide, carboxyl, CI-C7 alkoxy, C1-C7 alkyl, CI-C7 haloalkyl, Q-C7 haloalkyloxy, C1-C7 hydroxyalkyl, CI-C7 alkenyl, CI-C7 alkyl-C(=O)O-, Q-C7 alkyl-C(=O)-, C1-C7 alkynyl, halo, hydroxyalkoxy, C1-C7 alkyl-NHSO2-, CI-C7 alkyl-SOZNH-, C1-C7 alkylsulfonyl, CI-C7 alkylamino or di(CI-C7)alkylamino;
R is independently H, Q-C7 alkyl, or C3-C10 cycloalkyl, where alkyl or cycloalkyl is optionally substituted with at least one R11 ;
-Il-Ra is independently selected from H and CI-C7 alkyl, where CI-C7 alkyl is optionally substituted with at least one R11;

Rb is independently selected from H and CI -C7 alkyl, where CI -C7 alkyl is optionally substituted with at least one Rl 1;
L' is (CH2)r, ethenyl or cyclopropyl;

L2 is independently selected from a bond, CI -C4 alkylene, Ci-C4 alkynyl, CI -alkenyl, -0-, -S-, -N-, -C(=O)NH-, -NHC(=O)-, -NHC(=O)NH-, -SOZNH-, -NHSO2-, -SO2-, -C(=0)- or -C(=O)O- ;

0 is a bond, -(CRa2)rC(O)-, -(CRa2)rO-, -(CRa2)rC(O)NR7-, -(CRa2)rNR'C(O)-, -(CRa2)r NR'C(O)NR'-, -(CRa2)rOC(O)NR'-, -(CRa2)r NR'C(O)O-, -(CRa2)r NR7 -, or -(CR4R6)n-;

L4 is a bond, -(CRa2)rC(O)-, -(CRa2)rO-, -(CRa2)rC(O)NR7 -(CRa2)rNTeC(O)-, -(CRa2)r NR7C(O)NR7-, -(CRa2)rOC(O)NR'-, -(CRa2)r W C(O)O-, -(CRa2)r NR7 - or -(CR R)n-;
XisSHorNHZ;
Z is a bond, heteroaryl, heterocyclic, aryl, or C3-C8 cycloalkyl, where heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one Rl l n is 0, 1, 2, 3 or 4;
pis1,2,3or4;
q is l or 2;
r is independently 0, 1, 2 or 3;
t is 1, 2, 3, or 4;
or a stereoisomer or pharmaceutically acceptable salt thereof.
In another embodiment of the invention, Ring A is a 5- to 6- membered heteroaryl or 6-membered aryl;
With the proviso that Ring A is not tetrahydro-dioxo-pyrimidinyl;
Ring B is heteroaryl or aryl;
M is selected from:

Rlo P~O
R? ~~ I
L3 ` Z-L4! `` z R' N-'L3-Z,La O O
0,17 Rlo\p F\
Rb ~ L Z
N~L3_Z-L4 Rb O
L3_Z,L4 00 Rb =~
N ( )q L~ L3_Z,L4 , R and O
R' and RZ are independently selected from -OR, -NR7R8, unsubstituted Cl-Clo alkyl, unsubstituted C3-Clo cycloalkyl, -(CRa2)rR9, -ORC(O)OR, -O(CRa 2)rR9, -O(CRa2)rC(O)NR7RB, -O(CRa2)r NR7RB, and -O(CRa2)rOR;

or R' and R2 together with the phosphorous atom to which they are attached form a phosphorous-containing heterocyclic ring;
R3 is hydrogen;
R4 and R6 are independently of each other hydrogen, -OR, -NH2, halo, -CN, -C(O)NH2, -NH2C(O)R, -C(O)OR, -P(O)(OR)2, oxo, unsubstituted CI -C6 alkyl;

RS is LZ-R9;
R7 and R8 are independently selected from hydrogen, C1-C7 alkyl, -(CRa2)rheteroaryl, -(CRa2)rheterocyclic, -(CRa2)r C3-Cg cycloalkyl and -(CRa2)raryl, where alkyl, heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one Rl 1;
R9 is independently selected from hydrogen, C1-C7 alkyl, heteroaryl and aryl, where heteroaryl, aryl or alkyl is optionally substituted with at least one R11;

R10 is independently selected from unsubstituted Cl -C7 alkyl or unsubstituted aryl;

Rl l is independently selected from Ci-C7 alkyl, halo, CF3, OH or CI-C7 alkoxy;
R is independently H, CI-C7 alkyl, or C3-C10 cycloalkyl, where alkyl or cycloalkyl is optionally substituted with at least one R11;

Ra is independently selected from H and C,-C, alkyl, where Ci-C7 alkyl is optionally substituted with at least one R11;

Rb is independently selected from H and CI-C7 alkyl, where C1-C7 alkyl is optionally substituted with at least one R11;
Ll is (CH2)r or ethenyl;
L2 is a bond;

0 is a bond, -(CRa2)rO-, -(CRa2)rC(O)-, -(CRa2)r NR7 -, -(CR4R6)n-;
L4 is a bond or -(CR4R)n-;

X is NH2;
Z is a bond, heteroaryl, heterocyclic, aryl, or C3-C8 cycloalkyl, where heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one Rl l;
n is 0, 1 or 2;
pis1,2,3or4;
q is 1 or 2;
r is independently 0, 1, 2 or 3;
t is 1, 2, 3, or 4;
or a stereoisomer or pharmaceutically acceptable salt thereof.
In another embodiment of the invention, compounds are represented by Formula IA, (R3), X

l L~ fN
O~~ L3_ ZL4 1f (R5) P
R' O
IA
Ring A is a 5- to 6- membered heteroaryl or 6-membered aryl;
With the proviso that Ring A is not tetrahydro-dioxo-pyrimidinyl;
Ring B is heteroaryl or aryl;
R' and RZ are independently selected from -OR, -NR7R8, substituted or unsubstituted Cl-Clo alkyl, substituted or unsubstituted C1-Clo alkenyl, substituted or unsubstituted Cl-Clo alkynyl, substituted or unsubstituted C3-Cio cycloalkyl, -(CRa 2)rR9, -ORC(O)OR, -O(CRa2)rR9, -O(CRa2)rC(O)1VR'R8, -O(CRa2)r NR7R8, and -O(CRa2)rOR;

R3 is independently selected from hydrogen, -OR, -NR7 Rg, -NO2, -CN, -C(O)NR'RB, -NR7 RBC(O)R, C(O), CI-C7 alkyl, CI-C7 haloalkyl, C1-C7 haloalkyloxy, CI-C7 hydroxyalkyl, CI-C7 alkenyl, CI-C7alkyl-C(=O)O-, CI-C7alkyl-C(=O)-, C1-C7 alkynyl, halo, hydroxyalkoxy, CI-C7alkyl-NHSO2-, Ct-C7alkyl-SO2NH-, C,-C7 alkylsulfonyl, C1-alkylamino or di(CI-C7)alkylamino;
R4 and R6 are independently of each other hydrogen, -OR, -NR'Rg, halo, -CN, -C(O)NR7R8, -NR7RgC(O)R, -C(O)OR, -P(O)(OR)2, oxo, substituted or unsubstituted CI-C6 alkyl, substituted or unsubstituted CI-Ca alkenyl, substituted or unsubstituted C1-C4 alkynyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heteroaryl, substituted or unsubstituted heterocyclic or substituted or unsubstituted aryl;
R5 is independently selected from hydrogen, OH, NH2, nitro, CN, amide, carboxyl, CI-C7 alkoxy, C1-C7 alkyl, CI-C7 haloalkyl, Cl-C7 haloalkyloxy, CI-C7 hydroxyalkyl, C1-C7 alkenyl, CI-C7 alkyl-C(=O)O-, C1-C7 alkyl-C(=O)-, CI-C7 alkynyl, halo, hydroxyalkoxy, CI-C7 alkyl-NHSO2-, CI-C7 alkyl-SO2NH-, CI-C7 alkylsulfonyl, CI-C7 alkylamino or di(Ct-C7)alkylamino or LZ-R9, R7 and R8 are independently selected from hydrogen, CI-C7 alkyl, -(CRE12)rheteroaryl, -(CRa2)rheterocyclic, -(CRa2)r C3-C8 cycloalkyl and -(CRa2)raryl, where alkyl, heteroaryt, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one R11;
R9 is independently selected from hydrogen, CI-C7 alkyl, heteroaryl, heterocyclic, aryl, and C3-C8 cycloalkyl, where alkyl, heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one R11 ;

R11 is independently selected from OH, NH2, nitro, CN, amide, carboxyl, C1-C7 alkoxy, Ci-C7 alkyl, CI-C7 haloalkyl, CI-C7 haloalkyloxy, CI-C7 hydroxyalkyl, CI-C7 alkenyl, C1-C7 alkyl-C(=O)O-, CI-C7 alkyl-C(=O)-, Cl-C7 alkynyl, halo, hydroxyalkoxy, CI-C7 alkyl-NHSOZ-, Ci-C7 alkyl-SO2NH-, CI-C7 alkylsulfonyl, CI-C7 alkylamino or di(C1-C7)alkylamino;
R is independently H, Ci-C7 alkyl, or C3-Clo cycloalkyl, where alkyl or cycloalkyl is optionally substituted with at least one R11;

Ra is independently selected from H and CI-C7 alkyl, where Ci-C7 alkyl is optionally substituted with at least one R11;
Ll is (CH2)r, ethenyl or cyclopropyl;

L2 is independently selected from a bond, C1-C4 alkylene, CI-Ca alkynyl, CI-C4 alkenyl, -0-, -S-, -N-, -C(=O)NH-, -NHC(=0)-, -NHC(=O)NH-, -SO2NH-, -NHSO2-, -SO2-, -C(=0)- or -C(=0)O- ;

L3 is a bond, -(CRa2)rC(O)-, -(CRa2)rO-, -(CRa2)rC(O)NR7-, -(CRa2)rNR7C(O)-, -(CRa2)r NR7C(O)NR7-, -(CRa2)rOC(O)NR'-, -(CRa2)r NR7C(O)O-or -(CRa2)r NR7 -, -(CR4R6)n-;

L4 is a bond, -(CRa2)rC(O)-, -(CRa2)rO-, -(CRa2)rC(O)NR7-, -(CRa2)rNR7C(O)-, -(CRa2)r NR7C(O)NR7-, -(CRa2)rOC(O)NR7-, -(CRa2)r NR7C(O)O-or -(CRa2)r NR7 -, -(CR4R)n-;

X is SH or NH2;
Z is a bond, heteroaryl, heterocyclic, aryl, or C3-C8 cycloalkyl, where heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one R11;
n is 0, 1, 2, 3 or 4;
pis1,2,3or4;
r is independently 0, 1, 2 or 3;
t is 1, 2, 3, or 4;
or a stereoisomer or pharmaceutically acceptable salt thereof.
In another embodiment of the invention under Formula IA, Ring A is a 5- to 6- membered heteroaryl or 6-membered aryl;
With the proviso that Ring A is not tetrahydro-dioxo-pyrimidinyl;
Ring B is heteroaryl or aryl;
R' and R2 are independently selected from -OR, -NR7R8, unsubstituted Cl-Clo alkyl, unsubstituted C3-Clo cycloalkyl, -(CRa2)rR9, -ORC(O)OR, -O(CRa )rR9, -O(CRa2)rC(O)NR7Rg, -O(CRa2)r NR7R8, and -O(CRa2)rOR;

R3 is hydrogen;
R4 and R6 are independently of each other hydrogen, -OR, -NH2, halo, -CN, -C(O)NH2, -NH2C(O)R, -C(O)OR, -P(O)(OR)2, oxo, unsubstituted Cl-C6 alkyl;

RS is L2-R9;
R7 and R$ are independently selected from hydrogen, C1-C7 alkyl, -(CRa2)rheteroaryl, -(CRa2)rheterocyclic, -(CRa2)r C3-C8 cycloalkyl and -(CRa2)raryl, where alkyl, heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one Rl 1;

R9 is independently selected from hydrogen, C1-C7 alkyl, heteroaryl and aryl, where heteroaryl, aryl or alkyl is optionally substituted with at least one R11;

R11 is independently selected from Cl -C7 alkyl, halo, CF3, OH or C1-C7 alkoxy;
R is independently H, C1-C7 alkyl, or C3-CIo cycloalkyl, where alkyl or cycloalkyl is optionally substituted with at least one Rl l;

Ra is independently selected from H and CI-C7 alkyl, where Ci-C7 alkyl is optionally substituted with at least one Rl l;
L' is (CH2)r or ethenyl;
L2 is a bond;

L3 is a bond, -(CRa2)rC(O)-, -(CRa2)rO-, -(CRa2)rC(O)NR'-, -(CRa2)rNR7C(O)-, -(CRa2)r Nk7C(O)NR7-, -(CRa2)rOC(O)NR'-, -(CRa2)r NR7C(O)O-or -(CRa2)r NR7 -, -(CR4R)n-;

L4 is a bond, -(CRa2)rC(O)-, -(CRa2)rO-, -(CRa2)rC(O)NR'-, -(CRa2)rNR'C(O)-, -(CRa2)r Nk7C(O)NR7-, -(CRa2)rOC(O)NR'-, -(CRa2)r NR7C(O)O-or -(CRa2)r NR7 -, -(CR4R6)n-;

XisNH2;
Z is a bond, heteroaryl, heterocyclic, aryl, or C3-Cg cycloalkyl, where heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one Rl l;
n is 0, 1 or 2;
p is 1, 2, 3 or 4;
r is independently 0, 1, 2 or 3;
t is 1, 2, 3, or 4;
or a stereoisomer or pharmaceutically acceptable salt thereof.
In another embodiment of the invention under Formula IA, Ring A is phenyl, pyridyl or pyrimidinyl;
Ring B is heteroaryl or aryl;
R' and RZ are independently selected from -OR, unsubstituted Cl-Clo alkyl, unsubstituted C3-Cio cycloalkyl, -(CRa2)rR9 or -O(CRa2)rR9;

R3 is hydrogen;
R and R6 are independently of each other hydrogen, -OR, -NH2, halo, -CN, -C(O)NH2, -NH2C(O)R, -C(O)OR, -P(O)(OR)2, oxo, unsubstituted C1-C6 alkyl;

RS is L2-R9;
R9 is independently selected from hydrogen, CI -C7 alkyl, heteroaryl and aryl, where heteroaryl, aryl or alkyl is optionally substituted with at least one R11 ;

R11 is independently selected from CI-C7 alkyl, halo, haloalkyl, OH or CI-C7 alkoxy;

R is independently H, Cl-C7 alkyl, or C3-CIo cycloalkyl, where alkyl or cycloalkyl is optionally substituted with at least one R11;

Ra is independently selected from H and C1-C7 alkyl, where CI-C7 alkyl is optionally substituted with at least one Rl 1;
L' is (CH2)r or ethenyl;
L2 is a bond;

0 is a bond, -(CRa2)rC(O)NR'-, -(CRa2)rNR'C(O)-, -(CRa2)r NR'C(O)NR'-, -(CRa2)rOC(O)NR'-, -(CRa2)r NR'C(O)O- or -(CRa2)r NR7 - or -(CR4R)n-;

L4 is a bond or -(CR4R6)n-;
X is NH2;
Z is a bond;
n is 0, 1 or 2;
p is 1;
r is independently 0, 1, 2 or 3;
t is 1, 2, 3, or 4;
or a stereoisomer or pharmaceutically acceptable salt thereof.
In another embodiment of the invention under Formula IB, Ozzzp- L3--L4 NH2 H
N

O
IB

R' and RZ are independently selected from -OR or unsubstituted C1-C4 alkyl;
R and R6 are hydrogen;
R5 is LZ-R9;

R9 is independently selected from hydrogen, unsubstituted or substituted heteroaryl, or unsubstituted or substituted aryl;

Ra is independently selected from H and unsubstituted CI-C4 alkyl;
R is unsubstituted CI-Ca alkyl;

0 is -(CRa2)rC(O)NR'-, -(CRa2)rOC(O)NR7-, or -(CRa2)r NR7_;
L4 is a bond or -(CR4R)n-;

n is 0, 1 or 2;
r is independently 0, 1, 2 or 3;
or a stereoisomer or pharmaceutically acceptable salt thereof.
X

~P
In another embodiment of the above embodiments, (RS is x R1o ~ / .

R10, R' 1, and R'3 are independently of each other hydrogen or fluoro.
R12 is hydrogen, substituted or unsubstituted phenyl or substituted or unsubstituted thienyl and X
is amino.
X

)P
In another embodiment of the above embodiments, the (R5 is x Rlo s~/ I
N

R10 and R" are independently of each other hydrogen or fluoro;
R12 is hydrogen, substituted or unsubstituted phenyl or substituted or unsubstituted thienyl and X is amino.
In another embodiment of the above embodiments, R12 is ,~s'r R17 R2o Rls R'7 and RZ' are independently selected from hydrogen or fluoro;
R18, R'9 or R20 are independently selected from hydrogen, halo, methyl, methoxy or halomethyl.

S
i R2a In another embodiment of the above embodiments, R12 is RZZ, R23 and R24 are independently selected from hydrogen, methyl, amino, hydroxyl, and halo.

\ ' R23 In another embodiment of the above embodiments, R'Z is R22, R23 and R24 are independently selected from hydrogen, methyl, amino, hydroxyl and halo.
In another embodiment of the above embodiments, Ring B is selected from phenyl, benzothiophenyl, benzofuranyl, thiazolyl, benzothiazolyl, furanyl, pyridyl, pyrimidyl, quinolinyl, thiophenyl, benzodioxyl, benzooxadiazolyl, quinoxalinyl, benzotriazolyl, benzoimidazolyl or benzooxazolyl.
In another embodiment, compounds of the instant invention are represented by Formula II:
(R3h x R2 Rs l N
O~p~ y n B L~ p- (R5)p R~ R4 O
lI
wherein R' and R2 are independently selected from OH, NR7 R8, substituted or unsubstituted Cl-Cl alkyl, substituted or unsubstituted Cl-Cl alkenyl, substituted or unsubstituted Cl-Cl alkynyl, substituted or unsubstituted Cl-Cl alkoxy, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heteroaryl, substituted or unsubstituted heterocyclic or substituted or unsubstituted aryl;

or R' and R2 together with the phosphorous atom to which they are attached form a phosphorous-containing heterocyclic ring;
or R2 and R6 together with the phosphorous and Y atom to which they are respectively attached, form a heterocyclic ring;
or R' and R4 together with the phosphorous and Y atom to which they are respectively attached, form a heterocyclic ring;
R3 is selected from hydrogen, OH, NH2, nitro, CN, amide, carboxyl, CI-C7 alkoxy, Ci-C7 alkyl, CI-C7 haloalkyl, CI-C7 haloalkyloxy, Cl-C7 hydroxyalkyl, CI-C7 alkenyl, C1-C7 alkyl-C(=O)O-, CI-C7 alkyl-C(=O)-, CI-C7 alkynyl, halo, hydroxyalkoxy, Ci-C7 alkyl-NHSOZ-, CI-C7 alkyl-SO2NH-, Ci-C7 alkylsulfonyl, CI-C7 alkylamino or di(Ci-C7)alkylamino;
R4 and R6 are independently of each other hydrogen, OH, NR7R8, halo or substituted or unsubstituted C1-C4 alkyl, substituted or unsubstituted CI -C4 alkenyl, substituted or unsubstituted CI-C4 alkynyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heteroaryl, substituted or unsubstituted heterocyclic or substituted or unsubstituted aryl;

or R4 and R6 together with the Y atom to which they are attached form a heterocyclic or carbocyclic ring;
R5 is selected from hydrogen, OH, NH2, nitro, CN, amide, carboxyl, CI-C7 d'ikoxy, Ci-C7 alkyl, CI-C7 haloalkyl, CI-C7 haloalkyloxy, CI-C7 hydroxyalkyl, CI-C7 alkenyl, CI-C7alkyl-C(=O)O-, Ci-C7alkyl-C(=O)-, CI-C7 alkynyl, halo, hydroxyalkoxy, CI-C7alkyl-NHSOZ-, CI-C7alkyl-SO2NH-, CI-C7alkylsulfonyl, CI-C7alkylamino or di(C1-C7)alkylamino or L2-R9, wherein R9 is substituted or unsubstituted heteroaryl, substituted or unsubstituted heterocyclic, substituted or unsubstituted aryl, substituted or unsubstituted C3-C8 cycloalkyl, L2 is selected from a bond, CI-C4 alkylene, CI-C4 alkynyl, CI-C4 alkenyl, -0-, -S-, -N-, -C(=O)NH-, -NHC(=O)-, -NHC(=O)NH-, -SO2NH-, -NHSO2-, -SOZ-, -C(=O)- or -C(=O)O- ;
R7 and R8 are independently selected from hydrogen, substituted or unsubstituted Cl-Cio alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heteroaryl, substituted or unsubstituted heterocyclic or substituted or unsubstituted aryl;
Ring A is a 5- to 6- membered heteroaryl or 6-membered aryl;
Ring B is heteroaryl or aryl;
nis0, 1,2,3or4;
pis1,2,3or4;
tis 1,2,3or4;

Ll is (CH2)r, ethenyl or cyclopropyl, wherein r is 0, 1 or 2;

X is SH or NH2;
Y is C or N;
With the proviso that Ring A is not tetrahydro-dioxo-pyrimidinyl;
or a stereoisomer or pharmaceutically acceptable salt thereof.
In one embodiment, the substitution of R' and RZ for Ct-Clo alkoxy, Cl-Clo alkyl, cycloalkyl, heteroaryl, heterocyclic or aryl groups are selected from OH, NH2, nitro, CN, amide, carboxyl, CI-C7 alkoxy, C1-C7 alkyl, C1-C7 haloalkyl, CI-C7 haloalkyloxy, C1-C7 hydroxyalkyl, CI-C7 alkenyl, C1-C7 alkyl-C(=O)O-, CI-C7 alkyl-C(=O)-, CI-C7 alkynyl, halo, hydroxyalkoxy, CI-C7 alkyl-NHSO2-, CI-C7 alkyl-SOZNH-, CI-C7 alkylsulfonyl, CI-C7 alkylamino or di(Ct-COalkylamino. In another embodiment, the substitution of R' and R2 for Ct-Clo alkoxy, Cl-Clo alkyl, cycloalkyl, heteroaryl, heterocyclic or aryl groups are selected from hydrogen, OH, NH2, nitro, CN, amide, carboxy or halo. In one embodiment, the substitution of R' and RZ for Cl-CIo alkoxy, Cl-Clo alkyl, cycloalkyl, heteroaryl, heterocyclic or aryl groups are selected from substituted or unsubstituted Cl-C,o alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heteroaryl, substituted or unsubstituted heterocyclic or substituted or unsubstituted aryl.

In one embodiment, compounds of the invention are represented by Formula II, wherein R' and R2 are independently selected from OH, NR7R8, substituted or unsubstituted Ci-Ca alkyl, substituted or unsubstituted CI-C4 alkoxy, substituted or unsubstituted heteroaryl or substituted or unsubstituted aryl;
or R' and R2 together with the phosphorous atom to which they.are attached form a phosphorous-containing heterocyclic ring;
R3 is selected from hydrogen, OH, NH2, nitro, CN, amide, carboxyl, CI-C7 alkoxy, CI -C7 alkyl, CI -C7 haloalkyl, CI -C7 haloalkyloxy, C1-C7 hydroxyalkyl, CI -C7 alkenyl, Ci-C7alkyl-C(=O)O-, Ct-C7alkyl-C(=O)-, CI-C7 alkynyl, halo, hydroxyalkoxy, CI-C7alkyl-NHSO2-, C1-C7 alkyl-SO2NH-, C1-C7 alkylsulfonyl, CI-C7 alkylamino or di(CI-C7)alkylamino;
R4 and R6 are independently of each other hydrogen, OH, NH2, halo or unsubstituted CI-Ca alkyl;
or R 4 and R6 together with the Y atom to which they are attached form a heterocyclic or carbocyclic ring;

R5 is selected from hydrogen, OH, NH2, nitro, CN, amide, carboxyl, CI-C7 alkoxy, CI-C7 alkyl, CI-C7 haloalkyl, CI-C7 haloalkyloxy, CI-C7 hydroxyalkyl, CI-C7 alkenyl, CI-C7 alkyl-C(=O)O-, CI-C7 alkyl-C(=O)-, CI-C7 alkynyl, halo, hydroxyalkoxy, CI-C7 alkyl-NHSO2-, CI-C7 alkyl-SO2NH-, CI-C7 alkylsulfonyl, C1-C7 alkylamino or di(CI-C7)alkylamino or LZ-R9, wherein R9 is substituted or unsubstituted heteroaryl, substituted or unsubstituted aryl, L 2 is selected from a bond, CI-C4 alkylene, CI-C4 alkynyl, CI-C4 alkenyl, -0-, -S-, -N-, -C(=O)NH-, -NHC(=O)-, -NHC(=O)NH-, -SOZNH-, -NHSO2-, -SO2-, -C(=O)- or -C(=O)O- ;
R7 and R8 are independently selected from hydrogen, substituted or unsubstituted CI -Ca alkyl, substituted or unsubstituted heteroaryl or substituted or unsubstituted aryl;
Ring A is a 5- to 6- membered monocyclic heteroaryl or 6-membered monocyclic aryl;
Ring B is heterbaryl or aryl;
nis0, 1,2,3or4;
pis1,2,3or4;
t is 1, 2, 3 or 4;
Ll is (CHA, ethenyl or cyclopropyl, wherein r is 0, 1 or 2;
X is SH or NH2;
YisCorN;
With the proviso that Ring A is not tetrahydro-dioxo-pyrimidinyl.
X

)P
In one embodiment of the above mentioned embodiments, the (R5 is X
R'o R13 R' 1 R10 , R" and R13 are independently of each other selected from hydrogen, OH, NH2, nitro, CN, amide, carboxyl, CI -C7 alkoxy, Ci-C7 alkyl, CI -C7 haloalkyl, haloalkyloxy, CI-C7 hydroxyalkyl, Ci-C7 alkenyl, CI-C7 alkyl-C(=O)O-, CI-C7 alkyl-C(=O)-, Ci-C7 alkynyl, halo, hydroxyalkoxy, Ci-C7 alkyl-NHSO2-, C1-C7 alkyl-SO2NH-, CI-C7 alkylsulfonyl, CI-C7 alkylamino or di(Q-COalkylamino;

R'Z is selected from hydrogen, OH, NH2, nitro, CN, amide, carboxyl, C1-C7 alkoxy, C1-C7 alkyl, CI-C7 haloalkyl, CI-C7 haloalkyloxy, C1-C7 hydroxyalkyl, C1-C7 alkenyl, C1-C7 alkyl-C(=O)O-, Ci-C7 alkyl-C(=O)-, C1-C7 alkynyl, halo, hydroxyalkoxy, Cl-C7 alkyl-NHSO2-, CI-C7 alkyl-SO2NH-, CI-C7 alkylsulfonyl, CI-C7 alkylamino or di(CI-C7)alkylamino or L2-R9, wherein R9 is substituted or unsubstituted heteroaryl, substituted or unsubstituted aryl, L2 is selected from a bond, CI-C4 alkylene, CI-C4 alkynyl, C1-C4 alkenyl, -0-, -S-, -N-, -C(=O)NH-, -NHC(=O)-, -NHC(=O)NH-, -SO2NH-, -NHSO2-, -SO2-, -C(=O)- or -C(=O)O-.
In one embodiment, the substitution on R9 is selected from hydrogen, OH, NH2, nitro, CN, amide, carboxyl, C1-C7 alkoxy, C1-C7 alkyl, C1-C7 haloalkyl, CI-C7 haloalkyloxy, Cl-C7 hydroxyalkyl, CI-C7 alkenyl, C1-C7 alkyl-C(=O)O-, C1-C7 alkyl-C(=O)-, C1-C7 alkynyl, halo, hydroxyalkoxy, CI-C7 alkyl-NHSOZ-, C1-C7 alkyl-SO2NH-, C1-C7 alkylsulfonyl, CI-alkylamino or di(CI-C7)alkylamino. In another embodiment, the substitution on R9 is selected from hydrogen, OH, NH2, nitro, CN, amide, carboxyl, methoxy, methyl, halomethyl and halo.
In one embodiment, R10, R" and R'3 are independently of each other hydrogen or fluoro.
In one embodiment, R'Z is hydrogen, substituted or unsubstituted phenyl or substituted or unsubstituted thienyl and X is amino.
R~7 Fe l ~ ~ R's In one embodiment, R12 is R20 R19 R'7 and RZ' are independently selected from hydrogen or fluoro;
R18, R'9 or R20 are independently selected from hydrogen, halo, methyl, methoxy or halomethyl.
In one embodiment, R" , R' $, R'9, R20 and R2' are hydrogen.

In one embodiment of the above mentioned embodiments, the x Ri o X
~ " I
(R5)R~ ~
P is R12 R10 and R" are independently of each other selected from hydrogen, OH, NH2, nitro, CN, amide, carboxyl, CI-C7 alkoxy, C1-C7 alkyl, C1-C7 haloalkyl, CI-C7 haloalkyloxy, Cl-C7 hydroxyalkyl, CI-C7 alkenyl, C,-C7alkyl-C(=O)O-, CI-C7alkyl-C(=O)-, CI-C7 alkynyl, halo, hydroxyalkoxy, C) -C7 alkyl-NHSOZ-, CI-C7 alkyl-SO2NH-, Cl-C7 alkylsulfonyl, Cl-C7 alkylamino or di(C, -COalkylamino;
R12 is selected from hydrogen, OH, NH2, nitro, CN, amide, carboxyl, Ci-C7 alkoxy, CI-C7 alkyl, Q-C7 haloalkyl, CI-C7 haloalkyloxy, C1-C7 hydroxyalkyl, CI-C7 alkenyl, CI-C7alkyl-C(=O)O-, CI-C7alkyl-C(=O)-, CI-C7 alkynyl, halo, hydroxyalkoxy, CI-C7alkyl-NHSO2-, C 1-C7 alkyl-SOZNH-, CI-C7 alkylsulfonyl, C1-C7 alkylamino or di(CI-C7)alkylamino or L2-R9, wherein R9 is substituted or unsubstituted heteroaryl, substituted or unsubstituted aryl, LZ
is selected from a bond, CI-C4 alkylene, CI-C4 alkynyl, C1-C4 alkenyl, -0-, -S-, -N-, -C(=O)NH-, -NHC(=O)-, -NHC(=0)NH-, -SO2NH-, -NHSO2-, -SO2-, -C(=O)- or -C(=O)O-.
In one embodiment, the substitution on R9 is selected from hydrogen, OH, NH2, nitro, CN, amide, carboxyl, Ct-C7alkoxy, CI-C7 alkyl, CI-C7 haloalkyl, Ct-C-7haloalkyloxy, Ci-C7 hydroxyalkyl, Ci-C7 alkenyl, CI -C7 alkyl-C(=O)O-, Cl-C7 alkyl-C(=O)-, CI -C7 alkynyl, halo, hydroxyalkoxy, Ca-C7 alkyl-NHSOZ-, Ci-C7 alkyl-SOZNH-, CI -C7 alkylsulfonyl, alkylamino or di(CI-C7)alkylamino. In another embodiment, the substitution on R9 is selected from hydrogen, OH, NH2, nitro, CN, amide, carboxyl, methoxy, methyl, halomethyl and halo.
In one embodiment, R10 and R' 1 are independently of each other hydrogen or fluoro.
In one embodiment, R12 is hydrogen, substituted or unsubstituted phenyl or substituted or unsubstituted thienyl and X is amino.

R21 07 R1s In one embodiment, R'Z is R2o R19 R17 and R21 are independently selected from hydrogen or fluoro;
R'8, R'9 or R20 are independently selected from hydrogen, halo, methyl, methoxy or halomethyl.
In one embodiment, R'7 , R'$, R19, R2 and R21 are hydrogen.
In one embodiment, R12 is methyl or halo substituted or unsubstituted thienyl.
Fe2 R23 S
R2a In one embodiment, R12 is %'2 R22, R23 and R24 are independently selected from hydrogen, methyl, amino, hydroxyl, and halo.

R24 S `

In one embodiment, R12 is R22, R23 and R24 are independently selected from hydrogen, methyl, amino, hydroxyl and halo.
In one embodiment, RZZ, R23 and R24 are hydrogen.
.X
~~~/ (R5)p In one embodiment of the above embodiments, x R1a N-N % R15 is Xis SH orNH2;
R14 is selected from hydrogen or halo;
R15 is selected from hydrogen, Ct-C7 alkyl, or L3-R16, wherein R16 is substituted or unsubstituted heteroaryl, substituted or unsubstituted aryl, L3 is selected from a bond or CI-C4 alkylene.
In one embodiment, R14 and R' 5 are hydrogen.
In one embodiment, R15 is R21 0 R'e Rzo R19 R'7 and R21 are independently selected from hydrogen or fluoro;
R'g, R19 or R20 are independently selected from hydrogen, halo, methyl, methoxy or halomethyl.
In one embodiment, R17 , R' g, R'9, R20 and RZ' are hydrogen.
In one embodiment of the above mentioned embodiments, R' and R2 are independently selected from OH, unsubstituted C1-C4 alkoxy, or unsubstituted aryl;

R3 is hydrogen;
R4 and R6 are independently of each other hydrogen, OH, NH2, F or methyl;
Ring B is phenyl;
nis0orl;
Ll is (CH2)r, wherein r is 0.

Specific embodiments depicting non-limiting Examples of the phosphorus derivatives of the above Formulas are provided in the Experimental Section hereinbelow.
Specific examples of the compounds of the instant invention include:
Diethyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]phosphonate;
Diethyl[4-( {[2-amino-5-(3-thienyl)phenyl]amino}carbonyl)phenyl]phosphonate;
Diethyl (4-{[(4-aminobiphenyl-3-yl)amino]carbonyl}phenyl)phosphonate;
Diethyl(4- { [(4-amino-l-phenyl-1 H-pyrazol-3-yl)amino]carbonyl}
phenyl)phosphonate;
Ethyl hydrogen [4-( {[2-amino-5-(2-thienyl)phenyl]amino}
carbonyl)phenyl]phosphonate;
Ethyl hydrogen (4-{[(4-amino-l-phenyl-lH-pyrazol-3-yl)amino]carbonyl}phenyl) phosphonate;
Methyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]phenylphosphinate;
Methyl [4-( {[2-amino-5-(3-thienyl)phenyl]amino}
carbonyl)phenyl]phenylphosphinate;
Methyl (4-{[(4-aminobiphenyl-3-yl)amino]carbonyl}phenyl)phenylphosphinate;
Ethyl[4-( { [2-amino-5-(2-thienyl)phenyl]amino}
carbonyl)phenyl]methylphosphinate;
Ethyl [4-( {[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]phenylphosphinate;
Ethyl (4- { [(4-aminobiphenyl-3-yl)amino]carbonyl } phenyl)methylphosphinate;
Methyl[4-( { [2-amino-5-(2-thienyl)phenyl]amino}
carbonyl)phenyl]methylphosphinate;
2-(ethylsulfonyl)ethyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]
methylphosphinate;
3-hydroxy-3-methylbutyl [4-( { [2-amino-5-(2-thienyl)phenyl]amino }
carbonyl)phenyl]
methylphosphinate;
Cyclobutyl [4-( {[2-amino-5-(2-thienyl)phenyl]amino} carbonyl)phenyl]
methylphosphinate;
Ethyl [4-({[2-amino-5-(2-thienyl)phenyl]arnino}carbonyl)phenyl]ethylphosphinate;
Ethyl [5-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)pyridin-2-yl]methylphosphinate;
N-(2-Amino-5-thiophen-2-yl-phenyl)-4-(diisopropyl-phosphinoyl)-benzamide;
N-[2-Amino-5-(2-thienyl)phenyl]-4-[(1-methyl-4-oxido-l,4-azaphosphinan-4-yl)methyl]benzamide;
N-(2-Amino-5-thiophen-2-yl-phenyl)-4-(dimethyl-phosphinoyl)-benzamide;
N-(2-Amino-5-phen-2-yl-phenyl)-4-(dimethyl-phosphinoyl)-benzamide;

[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-phosphonic acid dimethyl ester;
[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-phosphonic acid diethyl ester;
[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-phosphonic acid monomethyl ester;
[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-phosphonic acid monoethyl ester;
[4-(4-Amino-l-phenyl-lH-pyrazol-3-ylcarbamoyl)-benzyl]-phosphonic acid diethyl ester;
[4-(2-Amino-5-thiophen-3-yl-phenylcarbamoyl)-benzyl]-phosphonic acid diethyl ester;
[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-phosphonic acid diethyl ester;
N-[2-amino-5-(2-thienyl)phenyl]-4-[(5,5-dimethyl-2-oxido-1,3,2-dioxaphosphinan-2-yl)methyl]
benzamide;
Diisopropyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]phosphonate;
Diethyl [3-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]phosphonate;
Methyl tetrahydro-2H-pyran-4-ylmethyl[4-( {[2-amino-5-(2-thienyl)phenyl]amino}carbonyl) benzyl]phosphonate;
Methyl P-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]-N-1,3-thiazo ylphosphonamidoate;
Ethyl { [[4-( { [2-amino-5-(2-thienyl)phenyl] amino}
carbonyl)benzyl](methoxy)phosphoryl]
oxy} acetate;
Diethyl (4- { [(4-aminobiphenyl-3-yl)amino]carbonyl } benzyl)phosphonate;
Methyl pyridin-3-ylmethyl[4-( {[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]
phosphonate;
Methyl P-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]- N-benzylphosphonami doate;
Methyl P-[4-( {[2-amino-5-(2-thienyl)phenyl]amino} carbonyl)benzyl]-N-(pyridin-ylmethyl)phosphonamidoate;
Dibenzyl[4-( {[2-amino-5-(2-thienyl)phenyl]amino} carbonyl)benzyl]phosphonate;
2-amino-2-oxoethyl methyl[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]
phosphonate;
2-amino-2-methylpropyl methyl[4-( { [2-amino-5-(2-thienyl)phenyl] amino) carbonyl)benzyl]
phosphonate;
3-hydroxy-3-methylbutyl methyl[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]
phosphonate;
Tetraethyl {[4-( {[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]methylene}bis (phosphonate);

Diethyl [[4-( {[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl](cyano)methyl]
phosphonate;
Methyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl](diethoxyphosphoryl)acetate;
Methyl 3-[4-( {[2-amino-5-(2-thienyl)phenyl]amino} carbonyl)phenyl]-2-(dimethoxyphosphoryl) propanoate;
Diethyl {2-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]-1-cyanoethyl}
phosphonate;
Tetraethyl {2-[4-( {[2-amino-5-(2-thienyl)phenyl]amino} carbonyl)phenyl]ethane-1,1-diyl} bi s(phosphonate);
Diethyl {2-amino-1-[4-( { [2-amino-5-(2-thienyl)phenyl]amino} carbonyl)benzyl]-oxoethyl } phosphonate;
[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-phenyl-phosphinic acid methyl ester;
[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-phenyl-phosphinic acid;
[4-(2-Amino-5-thiophen-3-yl-phenylcarbamoyl)-benzyl]-phenyl-phosphinic acid methyl ester;
[4-(4-Amino-l-phenyl-lH-pyrazol-3-ylcarbamoyl)-benzyl]-phenyl-phosphinic acid methyl ester;.
[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-methyl-phosphinic acid ethyl ester;
[4-(4-Amino-biphenyl-3-ylcarbamoyl)-benzyl]-methyl-phosphinic acid ethyl ester;
[4-(4-Amino-biphenyl-3-ylcarbamoyl)-benzyl]-methyl-phosphinic acid ethyl ester;
[4-(4-Amino-biphenyl-3-ylcarbamoyl)-benzyl]-methyl-phosphinic acid ethyl ester;
[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-methyl-phosphinic acid cyclobutyl ester;
Methyl [4-( {[2-amino-5-(2-thienyl)-phenyl]amino}-carbonyl)benzyl]-methylphosphinate;
Isopropyl [4-( {[2-amino-5-(2-thienyl)-phenyl]amino}-carbonyl)benzyl]-methylphosphinate;
N-[2-Amino-5-(2-thienyl)phenyl]-4-( {methyl[(pyridin-3-ylmethyl)amino]-phosphoryl} methyl)-benzamide;
Pyridin-3-ylmethyl [4-( {[2-amino-5-(2-thienyl)phenyl]amino} -carbonyl)benzyl]methyl-phosphinate;
Methyl [4-( {[2-amino-5-(2-thienyl)-phenyl]amino}-carbonyl)benzyl]-ethylphosphinate;
Ethyl [4-( {[2-amino-5-(2-thienyl)-phenyl]amino}-carbonyl)benzyl]-ethylphosphinate;
Isopropyl [4-({[2-amino-5-(2-thienyl)-phenyl]amino}-carbonyl)benzyl]-ethylphosphinate;
Cyclobutyl [4-( {[2-amino-5-(2-thienyl)-phenyl]amino} -carbonyl)benzyl]-ethylphosphinate;
N-[2-Amino-5-(2-thienyl)phenyl]-4-( {ethyl[(pyridin-3-ylmethyl)amino]-phosphoryl} methyl)-benzamide;

Pyridin-3-ylmethyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}-carbonyl)benzyl]ethyl-phosphinate;
Cyclobutyl [4-( { [2-amino-5-(2-thienyl)phenyl]amino}
carbonyl)benzyl]phenylphosphinate;
Methyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl](4-fluorophenyl)phosphinate;
Methyl [3-( {[2-amino-5-(2-thienyl)phenyl]amino}
carbonyl)benzyl]phenylphosphinate;
Isopropyl [3-( {[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]methylphosphinate;
Methyl [3-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]ethylphosphinate;
Ethyl[4-( { [2-amino-5-(2-thienyl)phenyl]amino}
carbonyl)benzyl]phenylphosphinate;
Isopropyl[4-( { [2-amino-5-(2-thienyl)phenyl]amino}
carbonyl)benzyl]phenylphosphinate;
2,2,2-trifluoroethyl[4-( { [2-amino-5-(2-thienyl)phenyl]amino}
carbonyl)benzyl]
phenylphosphinate;
Ethyl[4-( {[2-arnino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]isopropylphosphinate;
Ethyl[4-( {[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]cyclopropylphosphinate;
3-hydroxy-3-methylbutyl [4-( {[2-amino-5-(2-thienyl)phenyl]amino}
carbonyl)benzyl]
phenylphosphinate;
2-amino-2-methylpropyl [4-({[2-amino-5-(2-thienyl)phenyl] amino}
carbonyl)benzyl]
phenylphosphinate;
2-amino-2-oxoethyl[4-( { [2-amino-5-(2-thienyl)phenyl]amino} carbonyl)benzyl]
phenylphosphinate;
Methyl [4-( { [2-amino-5-(2-thienyl)phenyl]amino}
carbonyl)benzyl]cyclopropylphosphinate;
Methyl (S)-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]methylphosphinate;
Methyl (R)-[4-( { [2-amino-5-(2-thienyl)phenyl]amino }
carbonyl)benzyl]methylphosphinate;
Methyl (4- {[(4-aminobiphenyl-3-yl)amino]carbonyl}benzyl)methylphosphinate;
3-hydroxy-3-methylbutyl [4-( {[2-amino-5-(2-thienyl)phenyl]amino}
carbonyl)benzyl]
ethylphosphinate;
3-hydroxy-3-methylbutyl [4-( {[2-amino-5-(2-thienyl)phenyl]amino}
carbonyl)benzyl]
methylphosphinate;
2-(ethylsulfonyl)ethyl[4-( { [2-amino-5-(2-thienyl)phenyl]amino}
carbonyl)benzyl]
methylphosphinate;
Diethyl{[5-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)pyridin-2-yl]methyl}phosphonate;
Diethyl { [5-( { [2-amino-5-(3-thienyl)phenyl]amino} carbonyl)pyridin-2-yl]methyl}phosphonate;
Methyl {[5-( {[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)pyridin-2-yl]methyl}
phenylphosphinate;

Methyl { [5-( {[2-amino-5-(3-thienyl)phenyl]amino} carbonyl)pyridin-2-yl]methyl }
phenylphosphinate;
{[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-phenyl]-hydroxy-methyl}-phosphonic acid dimethyl ester;
{ 1-[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-phenyl]-1-fluoro-ethyl} -phosphonic acid dimethyl ester;
{1-[4-(2-A.mino-5-thiophen-3-yl-phenylcarbamoyl)-phenyl]-1-fluoro-ethyl}-phosphonic acid dimethyl ester;
{1-[4-(4-A.mino-biphenyl-3-ylcarbamoyl)-phenyl]-1-fluoro-ethyl}-phosphonic acid dimethyl ester;
{ [4-(2-A.mino-5-thiophen-3-yl-phenylcarbamoyl)-phenyl]-hydroxy-methyl } -phosphonic acid dimethyl ester;
{[4-(4-Amino-biphenyl-3-ylcarbamoyl)-phenyl]-hydroxy-methyl}-phosphonic acid dimethyl ester;
{[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-phenyl]-fluoro-methyl}-phosphonic acid dimethyl ester;
{Amino-[4-(2-amino-5-thiophen-2-yl-phenylcarbamoyl)-phenyl]-methyl} -phosphonic acid dimethyl ester;
{ [4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-phenyl]-hydroxy-methyl } -phenyl-phosphinic acid ethyl ester;
{ 1-[4-(2-A.mino-5-thiophen-2-yl-phenylcarbamoyl)-phenyl]-1-fluoro-ethyl} -phenyl-phosphinic acid methyl ester;
{ 1-[4-(2-Amino-5-thiophen-3-yl-phenylcarbamoyl)-phenyl]-1-fluoro-ethyl } -phenyl-phosphinic acid methyl ester;
{1-[4-(4-Amino-biphenyl-3-ylcarbamoyl)-phenyl]-1-fluoro-ethyl}-phenyl-phosphinic acid methyl ester;
{[4-(2-A.mino-5-thiophen-3-yl-phenylcarbamoyl)-phenyl]-hydroxy-methyl } -phenyl-phosphinic acid ethyl ester;
{[4-(4-Amino-biphenyl-3-ylcarbamoyl)-phenyl]-hydroxy-methyl}-phenyl-phosphinic acid ethyl ester;
N-(2-Amino-5-thiophen-2-yl-phenyl)-4-(diisopropyl-phosphinoylmethyl)-benzamide;
N-(2-Amino-5-thiophen-2-yl-phenyl)-4-(diethyl-phosphinoylmethyl)-benzamide;
N-(2-Amino-5-thiophen-2-yl-phenyl)-4-(dimethyl-phosphinoylmethyl)-benzamide;

N-[2-Amino-5-(2-thien yl)phenyl]-3-[(diethylphosphoryl)methyl] benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-[2-(dimethylphosphoryl) ethyl] b enzamide;
Ethyl-{2-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]ethyl}methyl phosphinate;
N-[2-Amino-5-(2-thienyl)phenyl]-4-[(3-methyl-3-oxido-2,4-dioxa-9-aza-3-phosphaspiro[5.5]
undec-9-yl)methyl]benzamide;
N-[2-Amino-5-(2-thi enyl)phenyl]-4-[(3-methyl-3-oxido-2,4-dioxa-9-aza-3-phosphaspiro[5.5]
undec-9-yl)carbonyl]benzamide;
N-[2-Amino-5-(2-thienyl)phenyl]-6-(3-methyl-3-oxido-2,4-dioxa-9-aza-3-phosphaspiro [5.5]
undec-9-yl)nicotinamide;
N-[2-amino-5-(2-thienyl)phenyl]-6-{2-[bis(dimethylamino)phosphoryl]-2,8 -diazaspiro[4.5]dec-8-yl} nicotinamide;
N-[2-Amino-5-(2-thienyl)phenyl]-4-[(4-oxido-4-phenyl-1,4-azaphosphinan-l-yl)methyl]
benzamide;
N-[2-Amino-5-(2-thienyl)phenyl]-4-[(4-oxido-4-phenyl-l,4-azaphosphinan-l-yl)carbonyl]
benzamide;
N-[2-Amino-5-(2-thienyl)phenyl]-6-(4-oxido-4-phenyl-1,4-azaphosphinan-1-yl)nicotinamide;
N-[2-Amino-5-(2-thienyl)phenyl]-4-[(4-ethyl-4-oxido-1,4-azaphosphinan-l-yl)methyl]
benzamide;
N-[2-Amino-5-(2-thienyl)phenyl]-4-[(4-ethyl-4-oxido-1,4-azaphosphinan-l-yl)carbonyl]
benzamide;
N-[2-Amino-5-(2-thienyl)phenyl]-6-(4-ethyl-4-oxido-1,4-azaphosphinan-l-yl)nicotinamide;
N-(4-aminobiphenyl-3-yl)-4-[(4-oxido-4-phenyl-1,4-azaphosphinan-l-yl)methyl]benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-[2-(4-oxido-4-phenyl-1,4-azaphosphinan-1-yl)ethyl]
benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-[2-(4-ethyl-4-oxido-1,4-azaphosphinan-l-yl)ethyl]
benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-[2-(4-oxido-4-phenyl-1,4-azaphosphinan-l-yl)-2-oxoethyl]
benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-[2-(4-ethyi-4-oxido-1,4-azaphosphinan-l-yl)-2-oxoethyl]
benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-{[[2-(dimethylphosphoryl)ethyl]
(methyl)amino] methyl) benzamide;

N-[2-amino-5-(2-thienyl)phenyl]-4-{[[2-(diisopropylphosphoryl) ethyl](methyl) amino]methyl}
benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-{[[2-(diphenylphosphoryl) ethyl](methyl)amino] ethyl) benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-6-[[2-(dimethylphosphoryl) ethyl]
(methyl)amino]
nicotinamide;
N-[2-amino-5-(2-thienyl)phenyl]-6-[[2-(diisopropylphosphoryl) ethyl](methyl)amino]
nicotinamide;
N-[2-amino-5-(2-thienyl)phenyl]-6-[[2-(diphenylphosphoryl) ethyl]
(methyl)amino]
nicotinamide;
N- [2-amino-5-(2-thienyl)phenyl]-N-[2-(dimethylphosphoryl)ethyl]-N-methylterephthalamide;
N-[2-amino-5-(2-thienyl)phenyl]-N-[2-(diisopropylphosphoryl) ethyl]-N-methylterephthalamide;
N-[2-amino-5-(2-thienyl)phenyl]-N-[2-(diphenylphosphoryl)ethyl]-N-methylterephthalamide;
N-[2-amino-5-(2-thienyl)phenyl]-6- {[2-(diisopropylphosphoryl) ethyl]amino}nicotinamide;
N-[2-amino-5-(2-thienyl)phenyl]-N-[2-(diisopropylphosphoryl) ethyl]terephthalamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-({[2-(diisopropylphosphoryl) ethyl]amino}methyl) benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-N'-[2-(dimethylphosphoryl)ethyl]
terephthalamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-( {[2-(dimethylphosphoryl) ethyl]amino}
methyl) benzamide;
Methyl (4-{[(4-aminobiphenyl-3-yl)amino]carbonyl}benzyl)[2-(dimethylphosphoryl)ethyl]
carbamate;
Diethyl {1-[5-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)pyridin-2-yl]piperidin-4-yl}
phosphonate;
Diethyl (1-{[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]methyl}piperidin-4-yl) phosphonate;

Diethyl (1-{[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]carbonyl}piperidin-4-yl)phosphonate;
[4-( {[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]methyl dimethylphosphinate;
2-[4-({[2-arnino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]ethyl ethyl methylphosphonate;
[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]methyl ethylmethylphosphonate;
[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]methyl methylphenylphosphonate;
N-[2-amino-5-(2-thienyl)phenyl]-4-({[(4R, 5 R)-4,5-dimethyl-2-oxido-1,3,2-dioxaphospholan-2-yl]oxy} methyl)benzamide;

4-( { [2-amino-5-(2-thienyl)phenyl] amino) carbonyl)benzyl dimethylphosphate;
1-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]ethyl ethyl methylphosphonate;
1 -[4-( {[2-amino-5-(2-thienyl)phenyl]amino} carbonyl)phenyl] ethyl methyl methylphosphonate;
1-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]ethyl methyl phenylphosphonate;
4-( {[2-amino-5-(2-thienyl)phenyl]amino} carbonyl)benzyl ethylphenylphosphonate;
2-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]ethyl dimethylphosphinate;
2-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]ethyl methyl methylphosphonate;
1 -[4-( {[2-amino-5-(2-thienyl)phenyl]amino} carbonyl)phenyl]-2,2,2-trifluoro-(trifluoromethyl)ethyl dimethylphosphinate;
4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl dimethylphosphinate;
(4- {[(4-aminobiphenyl-3-yl)amino]carbonyl} phenyl)methyldimethylphosphinate;
1-[4-( { [2-amino-5-(2-thienyl)phenyl]amino} carbonyl)phenyl]ethyldi ethylphosphinate;
4-( {[2-amino-5-(2-thienyl)phenyl]amino} carbonyl)benzyldiethylphosphinate;
l -[4-( {[2-amino-5-(2-thienyl)phenyl]amino}
carbonyl)phenyl]ethyldimethylphosphinate;
4-( {[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyldiisopropylphosphinate;
1-[4-( { [2-amino-5-(2-thienyl)phenyl] amino}
carbonyl)phenyl]ethyldiisopropylphosphinate;
Dimethyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]amidophosphate;
N-[2-amino-5-(2-thienyl)phenyl]-4-({[(4R, 5R )-4,5-dimethyl-2-oxido-1,3,2 -dioxaphospholan-2-yl] amino} methyl)benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-({[bis(dimethylamino)phosphoryl]amino}methyl) benzamide;
Dimethyl [4-( { [2-amino-5-(2-thienyl)phenyl]amino}
carbonyl)phenyl]amidophosphate;
Diethyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]amidophosphate;
Dimethyl [4-( {[2-amino-5-(2-thienyl)phenyl]amino}
carbonyl)phenyl]amidophosphate;
Dimethyl [4-( { [2-amino-5-(2-thienyl)phenyl]amino}
carbonyl)phenyl]methylamidophosphate;
Dimethyl (4-{[(4-aminobiphenyl-3-yl)amino]carbonyl}phenyl)methylamidophosphate;
N-[2-amino-5-(2-thienyl)phenyl]-4-[bis(dimethylphosphoryl)amino]benzamide;
Dimethyl {[({[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]amino}carbonyl) oxy]methyl} phosphonate;
4-(dimethylphosphoryl)benzyl (4-{[(4-aminobiphenyl-3-yl)amino]carbonyl}benzyl)carbarnate;
[5-(dimethylphosphoryl)pyridin-3-yl]methyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}
carbonyl)benzyl]carbamate;

Diethyl ({[(4-{[(4-aminobiphenyl-3-yl)amino]carbonyl}phenyl)methyl][(methyloxy)carbonyl]
amino } methyl)phosphonate;
Diethyl {[({[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]amino}carbonyl) ox y]methyl } phosphonate;
Dimethyl {[( {[4-( {[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]amino}
carbonyl) oxy] methyl } phosphonate;
Methyl {[({[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]amino}carbonyl) oxy]methyl} methylphosphinate;
Ethyl {[({[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]amino}carbonyl) oxy]methyl } methylphosphinate;
Ethyl {[({[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]amino}carbonyl) oxy]methyl} ethy,lphosphinate;
(dimethylphosphoryl)methyl [4-( { [2-amino-5-(2-thienyl)phenyl]amino}
carbonyl)benzyl]
carbamate;
Diethyl (4-{[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzoyl]amino}
phenyl)phosphonate;
Diethyl [({[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]carbonyl}
amino)methyl]phosphonate;
Diethyl [({[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]methyl}amino) methyl]phosphonate;
N-[2-amino-5-(2-thi enyl)phenyl]-4-[(2s)-2-oxido-2-phenyl-1,3,2-dioxaphosphinan-5-yl]
benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-[(2r)-2-oxido-2-phenyl-1,3,2-dioxaphosphinan-5-yl ]
benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-[(2s)-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl]
benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-[(2r)-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl]
benzamide;
Dimethyl [3-((lE)-3-{[2-amino-5-(2-thienyl)phenyl]amino}-3-oxoprop-l-en-l-yl)phenyl]
phosphonate;
Ethyl [3-((lE)-3-{[2-amino-5-(2-thienyl)phenyl]amino}-3-oxoprop-l-en-l-yl)phenyl]
methylphosphinate;

Ethyl {3-[4-({[2-({[(1,1-dimethylethyl)oxy]carbonyl}amino)-5-(2-thienyl)phenyl]amino}
carbonyl)phenyl]-3-oxopropyl } methylphosphinate;
N-[2-amino-5-(2-thienyl)phenyl]-4-(2-methyl-2-oxido-1,2-oxaphospholan-5-yl)benzamide or the pharmaceutically acceptable salt or stereoisomer thereof.
Chemical Definitions As used herein, "alkyl" is intended to include both branched and straight-chain saturated aliphatic hydrocarbon groups having the specified number of carbon atoms. For example, C 1-C 10, as in "C 1-C 10 alkyl" is defined to include groups having 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 carbons in a linear or branched arrangement. For example, "C1-C10 alkyl" specifically includes methyl, ethyl, n-propyl, i-propyl, n-butyl, t-butyl, i-butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, and so on.
When used in the phrases "alkylaryl", "alkylcycloalkyl" and "alkylheterocyclyl"
the term "alkyl" refers to the alkyl portion of the moiety and does not describe the number of atoms in the aryl and heteroaryl portion of the moiety. In an embodiment, if the number of carbon atoms is not specified, the "alkyl" of "alkylaryl", "alkylcycloalkyl"
and "alkylheterocyclyl " refers to C I-C 12 alkyl and in a further embodiment, refers to C 1-C6 alkyl.

The term "cycloalkyl" means a monocyclic saturated or unsaturated aliphatic hydrocarbon group having the specified number of carbon atoms. The cycloalkyl is optionally bridged (i.e., forming a bicyclic moiety), for example with a methylene, ethylene or propylene bridge. The bridge may be optionally substituted or branched. The cycloalkyl may be fused with an aryl group such as phenyl, and it is understood that the cycloalkyl substituent is attached via the cycloalkyl group. For example, "cycloalkyl" includes cyclopropyl, methyl-cyclopropyl, 2,2-dimethyl-cyclobutyl, 2-ethyl-cyclopentyl, cyclohexyl, cyclopentenyl, cyclobutenyl and so on.
In an embodiment, if the number of carbon atoms is not specified, "alkyl"
refers to C I-C 12 alkyl and in a further embodiment, "alkyl" refers to C 1-C6 alkyl.
In an embodiment, if the number of carbon atoms is not specified, "cycloalkyl" refers to C3-C10 cycloalkyl and in a further embodiment, "cycloalkyl" refers to C3-C7 cycloalkyl. In an embodiment, examples of "alkyl" include methyl, ethyl, n-propyl, i-propyl, n-butyl, t-butyl and i-butyl.
The term "alkylene" means a hydrocarbon diradical group having the specified number of carbon atoms. For example, "alkylene" includes -CH2-, -CH2CH2- and the like. In an embodiment, if the number of carbon atoms is not specified, "alkylene"
refers to C1-C12 alkylene and in a further embodiment, "alkylene" refers to C1-C6 alkylene.

If no number of carbon atoms is specified, the term "alkenyl" refers to a non-aromatic hydrocarbon radical, straight, branched or cyclic, containing from 2 to 10 carbon atoms and at least one carbon to carbon double bond. Preferably one carbon to carbon double bond is present, and up to four non-aromatic carbon-carbon double bonds may be present. Thus, "C2-C6 alkenyl" means an alkenyl radical having from 2 to 6 carbon atoms. Alkenyl groups include ethenyl, propenyl, butenyl, 2-methylbutenyl and cyclohexenyl. The straight, branched or cyclic portion of the alkenyl group may contain double bonds and may be substituted if a substituted alkenyl group is indicated.
The term "alkynyl" refers to a hydrocarbon radical straight, branched or cyclic, containing from 2 to 10 carbon atoms and at least one carbon to carbon triple bond. Up to three carbon-carbon triple bonds may be present. Thus, "C2-C6 alkynyl" means an alkynyl radical having from 2 to 6 carbon atoms. Alkynyl groups include ethynyl, propynyl, butynyl, 3-methylbutynyl and so on. The straight, branched or cyclic portion of the alkynyl group may contain triple bonds and may be substituted if a substituted alkynyl group is indicated.
In certain instances, substituents may be defined with a range of carbons that includes zero, such as (CO-C6)alkylene-aryl. If aryl is taken to be phenyl, this definition would include phenyl itself as well as -CH2Ph, -CH2CH2Ph, CH(CH3)CH2CH(CH3)Ph, and so on.

"Aryl" is intended to mean any stable monocyclic, bicyclic or tricyclic carbon ring of up to 7 atoms in each ring, wherein at least one ring is aromatic.
Examples of such aryl elements include phenyl, naphthyl, tetrahydronaphthyl, indanyl and biphenyl.
In cases where the aryl substituent is bicyclic and one ring is non-aromatic, it is understood that attachment is via the aromatic ring.
In one embodiment, "aryl" is an aromatic ring of 6 to 14 carbons atoms, and includes a carbocyclic aromatic group fused with a 5-or 6-membered cycloalkyl group such as indan. Examples of carbocyclic aromatic groups include, but are not limited to, phenyl, naphthyl, e.g. 1-naphthyl and 2-naphthyl; anthracenyl, e.g. 1-anthracenyl, 2-anthracenyl;
phenanthrenyl; fluorenonyl, e.g. 9-fluorenonyl, indanyl and the like. A
carbocyclic aromatic group is optionally substituted with a designated number of substituents, described below.
The term heteroaryl, as used herein, represents a stable monocyclic, bicyclic or tricyclic ring of up to 7 atoms in each ring, wherein at least one ring is aromatic and contains carbon and from I to 4 heteroatoms selected from the group consisting of 0, N
and S. In another embodiment, the term heteroaryl refers to a monocyclic, bicyclic or tricyclic aromatic ring of 5-to 14-ring atoms of carbon and from one to four heteroatoms selected from 0, N, or S. As with the definition of heterocycle below, "heteroaryl" is also understood to include the N-oxide derivative of any nitrogen-containing heteroaryl. In cases where the heteroaryl substituent is bicyclic and one ring is non-aromatic or contains no heteroatoms, it is understood that attachment is via the aromatic ring or via the heteroatom containing ring, respectively.
Heteroaryl groups within the scope of this definition include but are not limited to acridinyl, carbazolyl, cinnolinyl, quinoxalinyl, pyrrazolyl, indolyl, benzotriazolyl, furanyl, thienyl, benzothienyl, benzofuranyl, quinolinyl, isoquinolinyl, oxazolyl, isoxazolyl, indolyl, pyrazinyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, tetrahydroquinoline.
Additional examples of heteroaryl include, but are not limited to pyridyl, e.g., 2-pyridyl (also referred to as a-pyridyl), 3-pyridyl (also referred to as (3-pyridyl) and 4-pyridyl (also referred to as (y-pyridyl);
thienyl, e.g., 2-thienyl and 3-thienyl; furanyl, e.g., 2-furanyl and 3-furanyl; pyrimidyl, e.g., 2-pyrimidyl and 4-pyrimidyl; imidazolyl, e.g., 2-imidazolyl; pyranyl, e.g., 2-pyranyl and 3-pyranyl; pyrazoly), e.g., 4-pyrazolyl and 5-pyrazolyl; thiazolyl, e.g., 2-thiazolyl, 4-thiazolyl and 5-thiazolyl; thiadiazolyl; isothiazolyl; oxazolyl, e.g., 2-oxazoyl, 4-oxazoyl and 5-oxazoyl;
isoxazoyl; pyrrolyl; pyridazinyl; pyrazinyl and the like. Heterocyclic aromatic (or heteroaryl) as defined above may be optionally substituted with a designated number of substituents, as described below for aromatic groups.
In an embodiment, "heteroaryl" may also include a "fused polycyclic aromatic", which is a heteroaryl fused with one or more other heteroaryl or nonaromatic heterocyclic ring.
Examples include, quinolinyl and isoquinolinyl, e.g. 2-quinolinyl, 3-quinolinyl, 4-quinolinyl, 5-quinolinyl, 6-quinolinyl, 7-quinolinyl and 8-quinolinyl, 1-isoquinolinyl, 3-quinolinyl, 4-isoquinolinyl, 5-isoquinolinyl, 6-isoquinolinyl, 7-isoquinolinyl and 8-isoquinolinyl;
benzofuranyl, e.g. 2-benzofuranyl and 3-benzofuranyl; dibenzofuranyl, e.g. 2,3-dihydrobenzofiuanyl; dibenzothiophenyl; benzothienyl, e.g. 2-benzothienyl and 3-benzothienyl;
indolyl, e.g. 2-indolyl and 3-indolyl; benzothiazolyl, e.g., 2-benzothiazolyl;
benzooxazolyl, e.g., 2-benzooxazolyl; benzimidazolyl, e.g. 2-benzoimidazolyl; isoindolyl, e.g. 1-isoindolyl and 3-isoindolyl; benzotriazolyl; purinyl; thianaphthenyl, pyrazinyland the like.
Fused polycyclic aromatic ring systems may optionally be substituted with a designated number of substituents, as described herein.
The term "heterocycle" or "heterocyclyl" as used herein is intended to mean monocyclic, spirocyclic, bicyclic or tricyclic ring of up to 7 atoms in each ring, wherein each ring is aromatic or non-aromatic and contains carbon and from I to 4 heteroatoms selected from the group consisting of 0, N, P and S. A nonaromatic heterocycle may be fused with an aromatic aryl group such as phenyl or aromatic heterocycle.
"Heterocyclyl" therefore includes the above mentioned heteroaryls, as well as 5, dihydro and tetrahydro analogs thereof. Further examples of "heterocyclyP"
include, but are not limited to the following: azetidinyl, benzoimidazolyl, benz6furanyl, benzofurazanyl, benzopyrazolyl, benzotriazolyl, benzothiophenyl, benzoxazolyl, carbazolyl, carbolinyl, cinnolinyl, furanyl, imidazolyl, indolinyl, indolyl, indolazinyl, indazolyl, isobenzofuranyl, isoindolyl, isoquinolyl, isothiazolyl, isoxazolyl, naphthpyridinyl, oxadiazolyl, oxazolyl, oxazoline, isoxazoline, oxetanyl, pyranyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridopyridinyl, pyridazinyl, pyridyl, pyrimidyl, pyrrolyl, quinazolinyl, quinolyl, quinoxalinyl, tetrahydropyranyl, tetrahydrothiopyranyl, tetrahydroisoquinolinyl, tetrazolyl, tetrazolopyridyl, thiadiazolyl, thiazolyl, thienyl, triazolyl, azetidinyl, 1,4-dioxanyl, hexahydroazepinyl, piperazinyl, piperidinyl, pyridin-2-onyl, pyrrolidinyl, morpholinyl, thiomorpholinyl, dihydrobenzoimidazolyl, dihydrobenzofuranyl, dihydrobenzothiophenyl, dihydrobenzoxazolyl, dihydrofuranyl, dihydroimidazolyl, dihydroindolyl, dihydroisooxazolyl, dihydroisothiazolyl, dihydrooxadiazolyl, dihydrooxazolyl, dihydropyrazinyl, dihydropyrazolyl, dihydropyridinyl, dihydropyrimidinyl, dihydropyrrolyl, dihydroquinolinyl, dihydrotetrazolyl, dihydrothiadiazolyl, dihydrothiazolyl, dihydrothienyl, dihydrotriazolyl, dihydroazetidinyl, methylenedioxybenzoyl, tetrahydrofuranyl, and tetrahydrothienyl, and N-oxides thereof. Attachment of a heterocyclyl substituent can occur via a carbon atom or via a heteroatom.
In an embodiment, "heterocycle" (also referred to herein as "heterocyclyl"), is a monocyclic, spirocyclic, bicyclic or tricyclic saturated or unsaturated ring of 5- to 14-ring atoms of carbon and from one to four heteroatoms selected from 0, N, S or P.
Examples of heterocyclic rings include, but are not limited to: pyrrolidinyl, piperidinyl, morpholinyl, thiamorpholinyl, piperazinyl, dihydrofuranyl, tetrahydrofuranyl, dihydropyranyl, tetrahydrodropyranyl, dihydroquinolinyl, tetrahydroquinolinyl, dihydroisoquinolinyl, tetrahydroisoquinolinyl, dihydropyrazinyl, tetrahydropyrazinyl, dihydropyridyl, tetrahydropyridyl and the like.
An "alkylaryl group" (arylalkyl) is an alkyl group substituted with an aromatic group, for example, a phenyl group. Another example of an alkylaryl group is a benzyl group.
Suitable aromatic groups are described herein and suitable alkyl groups are described herein.
Suitable substituents for an alkylaryl group are described herein.

An "alkyheterocyclyl" group" is an alkyl group substituted with a heterocyclyl group. Suitable heterocyclyl groups are described herein and suitable alkyl groups are described herein. Suitable substituents for an alkyheterocyclyl group are described herein.
An "alkycycloalkyl group" is an alkyl group substituted with a cycloalkyl group.
Suitable cycloalkyl groups are described herein and suitable alkyl groups are described herein.
Suitable substituents for an alkycycloalkyl group are described herein.
An "aryloxy group" is an aryl group that is attached to a compound via an oxygen (e.g., phenoxy).
An "alkoxy group" (alkyloxy), as used herein, is a straight chain or branched Cl-C12 or cyclic C3-CI2 alkyl group that is connected to a compound via an oxygen atom. Examples of alkoxy groups include but are not limited to methoxy, ethoxy and propoxy.
An "arylalkoxy group" (arylalkyloxy) is an arylalkyl group that is attached to a compound via an oxygen on the alkyl portion of the arylalkyl (e.g., phenylmethoxy).
An "arylamino group" as used herein, is an aryl group that is attached to a compound via a nitrogen.
An "alkylamino group" as used herein, is an alkyl group that is attached to a compound via a nitrogen.
As used herein, an "arylalkylamino group" is an arylalkyl group that is attached to a compound via a nitrogen on the alkyl portion of the arylalkyl.
An "alkylsulfonyl group" as used herein, is an alkyl group that is attached to a compound via the sulfur of a sulfonyl group.
As used herein, many moieties or groups are referred to as being either "substituted or unsubstituted". When a moiety is referred to as substituted, it denotes that any portion of the moiety that is known to one skilled in the art as being available for substitution can be substituted. The phrase "optionally substituted with one or more substituents" means, in one embodiment, one substituent, two substituents, three substituents, four substituents or five substituents. For example, the substitutable group can be a hydrogen atom that is replaced with a group other than hydrogen (i.e., a substituent group). Multiple substituent groups can be present.
When multiple substituents are present, the substituents can be the same or different and substitution can be at any of the substitutable sites. Such means for substitution are well known in the art. For purposes of exemplification, which should not be construed as limiting the scope of this invention, some examples of groups that are substituents are: alkyl, alkenyl or alkynyl groups (which can also be substituted, with one or more substituents), alkoxy groups (which can be substituted), a halogen or halo group (F, C1, Br, I), hydroxy, nitro, oxo, -CN, -COH, -COOH, amino, azido, N-alkylamino or N,N-dialkylamino (in which the alkyl groups can also be substituted), N-arylamino or N,N-diarylamino (in which the aryl groups can also be substituted), esters (-C(O)-OR, where R can be a group such as alkyl, aryl, etc., which can be substituted), ureas (-NHC(O)-NHR, where R can be a group such as alkyl, aryl, etc., which can be substituted), carbamates (-NHC(O)-OR, where R can be a group such as alkyl, aryl, etc., which can be substituted), sulfonamides (-NHS(O)2R, where R can be a group such as alkyl, aryl, etc., which can be substituted), alkylsulfonyl (which can be substituted), S(O)Z, aryl (which can be substituted), cycloalkyl (which can be substituted) alkylaryl (which can be substituted), alkylheterocyclyl (which can be substituted), alkylcycloalkyl (which can be substituted), and aryloxy (which can be substituted).
In an embodiment of the instant invention, Ring A is selected from phenyl or pyrazolyl. In an embodiment of the instant invention, Ring A is phenyl. In an embodiment of the instant invention, Ring A is pyridyl. In an embodiment of the instant invention, Ring A is pyrimidinyl.
In one embodiment of Formula I or the above mentioned embodiments, Ring B is selected from phenyl, benzothiophenyl, benzofuranyl, thiazolyl, benzothiazolyl, furanyl, pyridyl, pyrimidyl, quinolinyl, thiophenyl, benzodioxyl, benzooxadiazolyl, quinoxalinyl, benzotriazolyl, benzoimidazolyl or benzooxazolyl. In another embodiment, Ring B is phenyl, benzothiophenyl, thiophenyl or pyridyl. In a further embodiment, Ring B is phenyl or pyridyl.
In a further embodiment, Ring B is phenyl.

R2 3 R6 Op~ L

' In an embodiment of the instant invention, M is R~ R4 0,11 P~ rO 0 R1c-P-'*-) Rb Rb p L (Rb)q Ll- O P-1" L4~`'?,~ ~NL4 or 2 6 01,11 R% L3 R
Ozztpl-~' -I ~ " ~ Rb 0 L4 In another embodiment, M is R4 Rb , Rl0 \P

or R2 L3 R6 O--zzplo-~ y In another embodiment, M is R4 R'O \P
N
or In another embodiment, M is selected from:
O
R - \P
NO~p, L3, Z- R10 ` A
- R1 or ---L3_Z-L4 In another embodiment, M is O--Zzlp, L3, Z~ La~
Rl In another embodiment, M is selected from:

O ~- Rlo P
~
~P~ L3 ~ Z-L4 ~
Ri , ~N---L3_Z-L4 and ~

~NJ

In an embodiment of the instant invention, Y is C; R4 and R6 are hydrogen; n is 0 or 1;

In an embodiment of the instant invention, R' and R2 are independently selected from substituted or unsubstituted Cl-Cl alkyl or substituted or unsubstituted Cl-C1 alkyl. In another embodiment of the instant invention, R' and R2 are independently selected from substituted or unsubstituted CI-C4 alkyl or substituted or unsubstituted CI-C4 alkoxy. In another embodiment of the instant invention, R' and R2 are independently selected from unsubstituted C,-C4 alkyl or unsubstituted Ci-C4 alkoxy.

In an embodiment of the instant invention, R5 is H, C I-C7 alkyl, or L2-R9. In another embodiment, R5 is L2-R9. In another embodiment, R5 is L2-R9, where L2 is a bond or C1-C4 alkylene and R9 is substituted or unsubstituted heteroaryl, substituted or unsubstituted heterocyclic or substituted or unsubstituted aryl. In another embodiment, R5 is L2-R9, where L2 is a bond and R9 is thienyl or phenyl.

In an embodiment of the instant invention, R7 is H, CI-C7 alkyl, -(CRa2)rheteroaryl, -(CRa2)rheterocyclic, and -(CRa2)raryl.

In an embodiment of the instant invention, R8 is H, CI-C7 alkyl, -(CRa2)rheteroaryl, -(CRa2)rheterocyclic, and -(CRa2)raryl.

In an embodiment of the instant invention, R9 is substituted or unsubstituted heteroaryl, substituted or unsubstituted heterocyclic and substituted or unsubstituted aryl. In another embodiment, R9 is substituted or unsubstituted pyranyl, substituted or unsubstituted thiazolyl, substituted or unsubstituted pyridinyl and substituted or unsubstituted phenyl.
In another embodiment of this invention, R10 is CI-C7 alkyl, aryl or heteroaryl.
In another embodiment of this invention, R10 is CI-C7 alkyl or aryl.

In another embodiment of this invention, Rl I is independently selected from CI-C7 alkyl, halo, CF3, OH, Ci-C7 alkoxy.

In an embodiment of this invention, L' is a bond.
In an embodiment of this invention, L2 is a bond.

In one embodiment, 0 is a bond, unsubstituted or substituted Ct-C7 alkyl, -C(O)--0-, -C(O)NR7-, -NR7C(O)-, -NR7C(O)NR7-, -OC(O)NR7-, -NR7C(O)O- or - NR7 -, where alkyl is optionally substituted with at least one Rl 1. In another embodiment, 0 is -(CRa2)rC(O)NR'-, -(CRa2)rNR'C(O)-, -(CRa2)rOC(O)NR'-, -(CRa2)r NR7C(O)O- or -(CRa2)r NRT In another embodiment, 0 is -(CRa2)rNR'C(O)-, -(CRa2)rOC(O)NR7-, or -(CRa2)r NR7= In a further embodiment, 0 is -(CRa2)rOC(O)NR'-, or -(CRa2)r NR7-In a further embodiment, L3 is -CH2-OC(O)NR7-, or - CH2NR7. L3 is a bond, unsubstituted or substituted CI-C7 alkyl, -C(O)-, -0-, or - NR7 -, where alkyl is optionally substituted with at least one R11. In another embodiment, L3 is a bond. In another embodiment, L3 is -0-. In another embodiment, L3 is (CH2)n .

In one embodiment, L4 is (CH2)n . In another embodiment, L4 is CH2. In another embodiment, 0 is a bond.
In an embodiment, X is NH2.

In an embodiment of the instant invention, Y is C.
In an embodiment, Z is a bond, heteroaryl or heterocyclic, where heteroaryl, heterocyclic is optionally substituted with at least one R11. In an embodiment, Z is a bond.
In an embodiment of this invention, variable n is 0, 1, or 2.
In an embodiment of this invention, variable r is 0, 1, or 2 In an embodiment of this invention, variable t is 1 and R3 is H.
Stereochemistry Many organic compounds exist in optically active forms having the ability to rotate the plane of plane-polarized light. In describing an optically active compound, the prefixes D and L or R and S are used to denote the absolute configuration of the molecule about its chiral center(s). The prefixes d and I or (+) and (-) are employed to designate the sign of rotation of plane-polarized light by the compound, with (-) or meaning that the compound is levorotatory. A compound prefixed with (+) or d is dextrorotatory. For a given chemical structure, these compounds, called stereoisomers, are identical except that they are non-superimposable mirror images of one another. A specific stereoisomer can also be referred to as an enantiomer, and a mixture of such isomers is often called an enantiomeric mixture. A 50:50 mixture of enantiomers is referred to as a racemic mixture. Many of the compounds described herein can have one or more chiral centers and therefore can exist in different enantiomeric forms. If desired, a chiral carbon can be designated with an asterisk (*).
When bonds to the chiral carbon are depicted as straight lines in the Formulas of the invention, it is understood that both the (R) and (S) configurations of the chiral carbon, and hence both enantiomers and mixtures thereof, are embraced within the Formula. As is used in the art, when it is desired to specify the absolute configuration about a chiral carbon, one of the bonds to the chiral carbon can be depicted as a wedge (bonds to atoms above the plane) and the other can be depicted as a series or wedge of short parallel lines is (bonds to atoms below the plane).
The Cahn-Inglod-Prelog system can be used to assign the (R) or (S) configuration to a chiral carbon.
When the HDAC inhibitors of the present invention contain one chiral center, the compounds exist in two enantiomeric forms and the present invention includes both enantiomers and mixtures of enantiomers, such as the specific 50:50 mixture referred to as a racemic mixtures. The enantiomers can be resolved by methods known to those skilled in the art, such as formation of diastereoisomeric salts which may be separated, for example, by crystallization (see, CRC Handbook of Optical Resolutions via Diastereomeric Salt Formation by David Kozma (CRC Press, 2001)); formation of diastereoisomeric derivatives or complexes which may be separated, for example, by crystallization, gas-liquid or liquid chromatography; selective reaction of one enantiomer with an enantiomer-specific reagent, for example enzymatic esterification; or gas-liquid or liquid chromatography in a chiral environment, for example on a chiral support for example silica with a bound chiral ligand or in the presence of a chiral solvent. It will be appreciated that where the desired enantiomer is converted into another chemical entity by one of the separation procedures described above, a further step is required to liberate the desired enantiomeric form. Alternatively, specific enantiomers may be synthesized by asymmetric synthesis using optically active reagents, substrates, catalysts or solvents, or by converting one enantiomer into the other by asymmetric transformation.
Designation of a specific absolute configuration at a chiral carbon of the compounds of the invention is understood to mean that the designated enantiomeric form of the compounds is in enantiomeric excess (ee) or in other words is substantially free from the other enantiomer. For example, the "R" forms of the compounds are substantially free from the "S"
forms of the compounds and are, thus, in enantiomeric excess of the "S" forms.
Conversely, "S"
forms of the compounds are substantially free of "R" forms of the compounds and are, thus, in enantiomeric excess of the "R" forms. Enantiomeric excess, as used herein, is the presence of a particular enantiomer at greater than 50%. In a particular embodiment when a specific absolute configuration is designated, the enantiomeric excess of depicted compounds is at least about 90%.
When a compound of the present invention has two or more chiral carbons it can have more than two optical isomers and can exist in diastereoisomeric forms.
For example, when there are two chiral carbons, the compound can have up to 4 optical isomers and 2 pairs of enantiomers ((S,S)/(R,R) and (R,S)/(S,R)). The pairs of enantiomers (e.g., (S,S)/(R,R)) are mirror image stereoisomers of one another. The stereoisomers that are not mirror-images (e.g., (S,S) and (R,S)) are diastereomers. The diastereoisomeric pairs may be separated by methods known to those skilled in the art, for example chromatography or crystallization and the individual enantiomers within each pair may be separated as described above.
The present invention includes each diastereoisomer of such compounds and mixtures thereof.
As used herein, "a," an" and "the" include singular and plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "an active agent" or "a pharmacologically active agent" includes a single active agent as well a two or more different active agents in combination, reference to "a carrier" includes mixtures of two or more carriers as well as a single carrier, and the like.
This invention is also intended to encompass pro-drugs of the phosphorus derivatives disclosed herein. A prodrug of any of the compounds can be made using well-known pharmacological techniques.
This invention, in addition to the above listed compounds, is intended to encompass the use of homologs and analogs of such compounds. In this context, homologs are molecules having substantial structural similarities to the above-described compounds and analogs are molecules having substantial biological similarities regardless of structural similarities.

Pharmaceutically acceptable salts The phosphorus derivatives described herein can, as noted above, be prepared in the form of their pharmaceutically acceptable salts. Pharmaceutically acceptable salts are salts that retain the desired biological activity of the parent compound and do not impart undesired toxicological effects. Examples of such salts are (a) acid addition salts organic and inorganic acids, for example, acid addition salts which may, for example, be hydrochloric acid, sulphuric acid, methanesulphonic acid, fumaric acid, maleic acid, succinic acid, acetic acid, benzoic acid, oxalic acid, citric acid, tartaric acid, carbonic acid, phosphoric acid, trifluoroacetic acid, formic acid and the like. Pharmaceutically acceptable salts can also be prepared from by treatment with inorganic bases, for example, sodium, potassium, ammonium, calcium, or ferric hydroxides, and such organic bases as isopropylamine, trimethylamine, 2-ethylamino ethanol, histidine, procaine, and the like. Pharmaceutically acceptable salts can also be formed from elemental anions such as chlorine, bromine and iodine.

The active compounds disclosed can, as noted above, also be prepared in the form of their hydrates. The term "hydrate" includes but is not limited to hemihydrate, monohydrate, dihydrate, trihydrate, tetrahydrate and the like.
The active compounds disclosed can, as noted above, also be prepared in the form of a solvate with any organic or inorganic solvent, for example alcohols such as methanol, ethanol, propanol and isopropanol, ketones such as acetone, aromatic solvents and the like.
The active compounds disclosed can also be prepared in any solid or liquid physical form. For example, the compound can be in a crystalline form, in amorphous form, and have any particle size. Furthermore, the compound particles may be micronized, or may be agglomerated, particulate granules, powders, oils, oily suspensions or any other form of solid or liquid physical form.
The compounds of the present invention may also exhibit polymorphism. This invention further includes different polymorphs of the compounds of the present invention. The term "polymorph" refers to a particular crystalline state of a substance, having particular physical properties such as X-ray diffraction, IR spectra, melting point, and the like.
As used herein, "a," an" and "the" include singular and plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "an active agent" or "a pharmacologically active agent" includes a single active agent as well a two or more different active agents in combination, reference to "a carrier" includes mixtures of two or more carriers as well as a single carrier, and the like.
METHODS OF TREATMENT
The invention also relates to methods of using the phosphorus derivatives described herein. As demonstrated herein, the phosphorus derivatives of the present invention are useful for the treatment of cancer. In addition, there is a wide range of other diseases for which phosphorus derivatives may be found useful. Non-limiting examples are thioredoxin (TRX)-mediated diseases as described herein, and diseases of the central nervous system (CNS) as described herein.

1. Treatment of Cancer As demonstrated herein, the phosphorus derivatives of the present invention are useful for the treatment of cancer. Accordingly, in one embodiment, the invention relates to a method of treating cancer in a subject in need of treatment comprising administering to said subject a therapeutically effective amount of the phosphorus derivatives described herein.

#1 -47-The term "cancer" refers to any cancer caused by the proliferation of neoplastic cells, such as solid tumors, neoplasms, carcinomas, sarcomas, leukemias, lymphomas and the like. In particular, cancers that may be treated by the compounds, compositions and methods of the invention include, but are not limited to: Cardiac: sarcoma (angiosarcoma, fibrosarcoma, rhabdomyosarcoma, liposarcoma), myxoma, rhabdomyoma, fibroma, lipoma and teratoma;
Lung: bronchogenic carcinoma (squamous cell, undifferentiated small cell, undifferentiated large cell, adenocarcinoma), alveolar (bronchiolar) carcinoma, bronchial adenoma, sarcoma, lymphoma, chondromatous hamartoma, mesothelioma; Gastrointestinal: esophagus (squamous cell carcinoma, adenocarcinoma, leiomyosarcoma, lymphoma), stomach (carcinoma, lymphoma, leiomyosarcoma), pancreas (ductal adenocarcinoma, insulinoma, glucagonoma, gastrinoma, carcinoid tumors, vipoma), small bowel (adenocarcinoma, lymphoma, carcinoid tumors, Karposi's sarcoma, leiomyoma, hemangioma, lipoma, neurofibroma, fibroma), large bowel (adenocarcinoma, tubular adenoma, villous adenoma, hamartoma, leiomyoma);
Genitourinary tract: kidney (adenocarcinoma, Wilm's tumor [nephroblastoma], lymphoma, leukemia), bladder and urethra (squamous cell carcinoma, transitional cell carcinoma, adenocarcinoma), prostate (adenocarcinoma, sarcoma), testis (seminoma, teratoma, embryonal carcinoma, teratocarcinoma, choriocarcinoma, sarcoma, interstitial cell carcinoma, fibroma, fibroadenoma, adenomatoid tumors, lipoma); Liver: hepatoma (hepatocellular carcinoma), cholangiocarcinoma, hepatoblastoma, angiosarcoma, hepatocellular adenoma, hemangioma; Bone:
osteogenic sarcoma (osteosarcoma), fibrosarcoma, malignant fibrous histiocytoma, chondrosarcoma, Ewing's sarcoma, malignant lymphoma (reticulum cell sarcoma), multiple myeloma, malignant giant cell tumor chordoma, osteochronfroma (osteocartilaginous exostoses), benign chondroma, chondroblastoma, chondromyxofibroma, osteoid osteoma and giant cell tumors;
Nervous s, s~:
skull (osteoma, hemangioma, granuloma, xanthoma, osteitis deformans), meninges (meningioma, meningiosarcoma, gliomatosis), brain (astrocytoma, medulloblastoma, glioma, ependymoma, germinoma [pinealoma], glioblastoma multifonm, oligodendroglioma, schwannoma, retinoblastoma, congenital tumors), spinal cord neurofibroma, meningioma, glioma, sarcoma); Gynecological: uterus (endometrial carcinoma), cervix (cervical carcinoma, pre-tumor cervical dysplasia), ovaries (ovarian carcinoma [serous cystadenocarcinoma, mucinous cystadenocarcinoma, unclassified carcinoma], granulosa-thecal cell tumors, Sertoli-Leydig cell tumors, dysgerminoma, malignant teratoma), vulva (squamous cell carcinoma, intraepithelial carcinoma, adenocarcinoma, fibrosarcoma, melanoma), vagina (clear cell carcinoma, squamous cell carcinoma, botryoid sarcoma (embryonal rhabdomyosarcoma), fallopian tubes (carcinoma); Hematologic: blood (myeloid leukemia [acute and chronic], acute lymphoblastic leukemia, chronic lymphocytic leukemia, myeloproliferative diseases, multiple myeloma, myelodysplastic syndrome), Hodgkin's disease, non-Hodgkin's lymphoma [malignant lymphoma]; Skin: malignant melanoma, basal cell carcinoma, squamous cell carcinoma, Karposi's sarcoma, moles dysplastic nevi, lipoma, angioma, dermatofibroma; and Adrenal lands: neuroblastoma. Thus, the term "cancerous cell" as provided herein, includes a cell afflicted by any one of the above-identified conditions.
In an embodiment, the instant compounds are useful in the treatment of cancers that include, but are not limited to: leukemias including acute leukemias and chronic leukemias such as acute lymphocytic leukemia (ALL), Acute myeloid leukemia (AML), chronic lymphocytic leukemia (CLL), chronic myelogenous leukemia (CML) and Hairy Cell Leukemia;
lymphomas such as cutaneous T-cell lymphomas (CTCL), noncutaneous peripheral T-cell lymphomas, lymphomas associated with human T-cell lymphotrophic virus (HTLV) such as adult T-cell leukemia/lymphoma (ATLL), Hodgkin's disease and non-Hodgkin's lymphomas, large-cell lymphomas, diffuse large B-cell lymphoma (DLBCL); Burkitt's lymphoma;
mesothelioma, primary central nervous system (CNS) lymphoma; multiple myeloma;
childhood solid tumors such as brain tumors, neuroblastoma, retinoblastoma, Wilm's tumor, bone tumors, and soft-tissue sarcomas, common solid tumors of adults such as head and neck cancers (e.g., oral, laryngeal and esophageal), genito urinary cancers (e.g., prostate, bladder, renal, uterine, ovarian, testicular, rectal and colon), lung cancer, breast cancer, pancreatic cancer, melanoma and other skin cancers, stomach cancer, brain tumors, liver cancer and thyroid cancer.

2. Treatment of thioredoxin (TRX)-mediated diseases In another embodiment, the phosphorus derivatives are used in a method of treating a thioredoxin (TRX)-mediated disease or disorder in a subject in need thereof, comprising administering to the subject a therapeutically effective amount of one or more of the phosphorus compounds described herein.
Examples of TRX-mediated diseases include, but are not limited to, acute and chronic inflammatory diseases, autoimmune diseases, allergic diseases, diseases associated with oxidative stress, and diseases characterized by cellular hyperproliferation.
Non-limiting examples are inflammatory conditions of a joint including rheumatoid arthritis (RA) and psoriatic arthritis; inflammatory bowel diseases such as Crohn's disease and ulcerative colitis; spondyloarthropathies; scleroderma; psoriasis (including T-cell mediated psoriasis) and inflammatory dermatoses such an dermatitis, eczema, atopic dermatitis, allergic contact dermatitis, urticaria; vasculitis (e.g., necrotizing, cutaneous, and hypersensitivity vasculitis); eosinphilic myositis, eosinophilic fasciitis; cancers with leukocyte infiltration of the skin or organs, ischemic injury, including cerebral ischemia (e.g., brain injury as a result of trauma, epilepsy, hemorrhage or stroke, each of which may lead to neurodegeneration); HIV, heart failure, chronic, acute or malignant liver disease, autoimmune thyroiditis; systemic lupus erythematosus, Sjorgren's syndrome, lung diseases (e.g., ARDS); acute pancreatitis; amyotrophic lateral sclerosis (ALS); Alzheimer's disease; cachexia/anorexia; asthma;
atherosclerosis; chronic fatigue syndrome, fever; diabetes (e.g., insulin diabetes or juvenile onset diabetes);
glomerulonephritis; graft versus host rejection (e.g., in transplantation);
hemohorragic shock;
hyperalgesia: inflammatory bowel disease; multiple sclerosis; myopathies (e.g., muscle protein metabolism, esp. in sepsis); osteoporosis; Parkinson's disease; pain; pre-term labor; psoriasis;
reperfusion injury; cytokine-induced toxicity (e.g., septic shock, endotoxic shock); side effects from radiation therapy, temporal mandibular joint disease, tumor metastasis;
or an inflammatory condition resulting from strain, sprain, cartilage damage, trauma such as burn, orthopedic surgery, infection or other disease processes. Allergic diseases and conditions, include but are not limited to respiratory allergic diseases such as asthma, allergic rhinitis, hypersensitivity lung diseases, hypersensitivity pneumonitis, eosinophilic pneumonias (e.g., Loeffler's syndrome, chronic eosinophilic pneumonia), delayed-type hypersensitivity, interstitial lung diseases (ILD) (e.g., idiopathic pulmonary fibrosis, or ILD associated with rheumatoid arthritis, systemic lupus erythematosus, ankylosing spondylitis, systemic sclerosis, Sjogren's syndrome, polymyositis or dermatomyositis); systemic anaphylaxis or hypersensitivity responses, drug allergies (e.g., to penicillin, cephalosporins), insect sting allergies, and the like.
3. Treatment of diseases of the central nervous system (CNS) In another embodiment, the phosphorus derivatives are used in a method of treating a disease of the central nervous system in a subject in need thereof comprising administering to the subject a therapeutically effective amount of any one or more of the phosphorus compounds described herein.
In a particular embodiment, the CNS disease is a neurodegenerative disease. In a further embodiment, the neurodegenerative disease is an inherited neurodegenerative disease, such as those inherited neurodegenerative diseases that are polyglutamine expansion diseases.
Generally, neurodegenerative diseases can be grouped as follows:

1. Disorders characterized by progressive dementia in the absence of other prominent neurologic signs, such as Alzheimer's disease; Senile dementia of the Alzheimer type; and Pick's disease (lobar atrophy).
II. Syndromes combining progressive dementia with other prominent neurologic abnormalities such as A) syndromes appearing mainly in adults (e.g., Huntington's disease, Multiple system atrophy combining dementia with ataxia and/or manifestations of Parkinson's disease, Progressive supranuclear palsy (Steel-Richardson-Olszewski), diffuse Lewy body disease, and corticodentatonigral degeneration); and B) syndromes appearing mainly in children or young adults (e.g., Hallervorden-Spatz disease and progressive familial myoclonic epilepsy).
III. Syndromes of gradually developing abnormalities of posture and movement such as paralysis agitans (Parkinson's disease), striatonigral degeneration, progressive supranuclear palsy, torsion dystonia (torsion spasm; dystonia musculorum deformans), spasmodic torticollis and other dyskinesis, familial tremor, and Gilles de la Tourette syndrome.

IV. Syndromes of progressive ataxia such as cerebellar degenerations (e.g., cerebellar cortical degeneration and olivopontocerebellar atrophy (OPCA)); and spinocerebellar degeneration (Friedreich's atazia and related disorders).

V. Syndrome of central autonomic nervous system failure (Shy-Drager syndrome).

VI. Syndromes of muscular weakness and wasting without sensory changes (motorneuron disease such as amyotrophic lateral sclerosis, spinal muscular atrophy (e.g., infantile spinal muscular atrophy (Werdnig-Hoffman), juvenile spinal muscular atrophy (Wohlfart-Kugelberg-Welander) and other forms of familial spinal muscular atrophy), primary lateral sclerosis, and hereditary spastic paraplegia.

VII. Syndromes combining muscular weakness and wasting with sensory changes (progressive neural muscular atrophy; chronic familial polyneuropathies) such as peroneal muscular atrophy (Charcot-Marie-Tooth), hypertrophic interstitial polyneuropathy (Dejerine-Sottas), and miscellaneous forms of chronic progressive neuropathy.

VIII. Syndromes of progressive visual loss such as pigmentary degeneration of the retina (retinitis pigmentosa), and hereditary optic atrophy (Leber's disease).

Definitions:
The term "treating" in its various grammatical forms in relation to the present invention refers to preventing (i.e., chemoprevention), curing, reversing, attenuating, alleviating, minimizing, suppressing or halting the deleterious effects of a disease state, disease progression, disease causative agent (e.g., bacteria or viruses) or other abnormal condition. For example, treatment may involve alleviating a symptom (i.e., not necessary all symptoms) of a disease or attenuating the progression of a disease. Because some of the inventive methods involve the physical removal of the etiological agent, the artisan will recognize that they are equally effective in situations where the inventive compound is administered prior to, or simultaneous with, exposure to the etiological agent (prophylactic treatment) and situations where the inventive compounds are administered after (even well after) exposure to the etiological agent.
Treatment of cancer, as used herein, refers to partially or totally inhibiting, delaying or preventing the progression of cancer including cancer metastasis;
inhibiting, delaying or preventing the recurrence of cancer including cancer metastasis;
or preventing the onset or development of cancer (chemoprevention) in a mammal, for example a human.
As used herein, the term "therapeutically effective amount" is intended to encompass any amount that will achieve the desired therapeutic or biological effect. The therapeutic effect is dependent upon the disease or disorder being treated or the biological effect desired. As such, the therapeutic effect can be a decrease in the severity of symptoms associated with the disease or disorder and/or inhibition (partial or complete) of progression of the disease.
The amount needed to elicit the therapeutic response can be determined based on the age, health, size and sex of the subject. Optimal amounts can also be detenmined based on monitoring of the subject's response to treatment.
In the present invention, when the compounds are used to treat or prevent cancer, the desired biological response is partial or total inhibition, delay or prevention of the progression of cancer including cancer metastasis; inhibition, delay or prevention of the recurrence of cancer including cancer metastasis; or the prevention of the onset or development of cancer (chemoprevention) in a mammal, for example a human.
Furthermore, in the present invention, when the compounds are used to treat and/or prevent thioredoxin (TRX)-mediated diseases and conditions, a therapeutically effective amount is an amount that regulates, for example, increases, decreases or maintains a physiologically suitable level of TRX in the subject in need of treatment to elicit the desired therapeutic effect. The therapeutic effect is dependent upon the specific TRX-mediated disease or condition being treated. As such, the therapeutic effect can be a decrease in the severity of symptoms associated with the disease or disorder and/or inhibition (partial or complete) of progression of the disease or disease.
Furthermore, in the present invention, when the compounds are used to treat and/or prevent diseases or disorders of the central nervous system (CNS), a therapeutically effective amount is dependent upon the specific disease or disorder being treated. As such, the therapeutic effect can be a decrease in the severity of symptoms associated with the disease or disorder and/or inhibition (partial or complete) of progression of the disease or disorder.
In addition, a therapeutically effective amount can be an amount that inhibits histone deacetylase.
Further, a therapeutically effective amount, can be an amount that selectively induces terminal differentiation, cell growth arrest and/or apoptosis of neoplastic cells, or an amount that induces terminal differentiation of tumor cells.
The method of the present invention is intended for the treatment or chemoprevention of human patients with cancer. However, it is also likely that the method would be effective in the treatment of cancer in other subjects. "Subject", as used herein, refers to animals such as mammals, including, but not limited to, primates (e.g., humans), cows, sheep, goats, horses, pigs, dogs, cats, rabbits, guinea pigs, rats, mice or other bovine, ovine, equine, canine, feline, rodent or murine species.

HISTONE DEACETYLASES AND HISTONE DEACETYLASE INHIBITORS
As demonstrated herein, the phosphorus derivatives of the present invention show improved activity as histone deacetylase (HDAC) inhibitors. Accordingly, in one embodiment, the invention relates to a method of inhibiting the activity of histone deacetylase comprising contacting the histone deacetylase with an effective amount of one or more of the phosphorus compounds described herein.
Histone deacetylases (HDACs), as that term is used herein, are enzymes that catalyze the removal of acetyl groups from lysine residues in the amino terminal tails of the nucleosomal core histones. As such, HDACs together with histone acetyl transferases (HATs) regulate the acetylation status of histones. Histone acetylation affects gene expression and inhibitors of HDACs, such as the hydroxamic acid-based hybrid polar compound suberoylanilide hydroxamic acid (SAHA) induce growth arrest, differentiation and/or apoptosis of transfonmed cells in vitro and inhibit tumor growth in vivo. HDACs can be divided into three classes based on structural homology. Class I HDACs (HDACs 1, 2, 3 and 8) bear similarity to the yeast RPD3 protein, are located in the nucleus and are found in complexes associated with transcriptional co-repressors. Class II HDACs (HDACs 4, 5, 6, 7 and 9) are similar to the yeast HDAI protein, and have both nuclear and cytoplasmic subcellular localization.
Both Class I and II HDACs are inhibited by hydroxamic acid-based HDAC inhibitors, such as SAHA.
Class III
HDACs form a structurally distant class of NAD dependent enzymes that are related to the yeast SIR2 proteins and are not inhibited by hydroxamic acid-based HDAC inhibitors.
Histone deacetylase inhibitors or HDAC inhibitors, as that term is used herein are compounds that are capable of inhibiting the deacetylation of histones in vivo, in vitro or both.
As such, HDAC inhibitors inhibit the activity of at least one histone deacetylase. As a result of inhibiting the deacetylation of at least one histone, an increase in acetylated histone occurs and accumulation of acetylated histone is a suitable biological marker for assessing the activity of HDAC inhibitors. Therefore, procedures that can assay for the accumulation of acetylated histones can be used to determine the HDAC inhibitory activity of compounds of interest. It is understood that compounds that can inhibit histone deacetylase activity can also bind to other substrates and as such can inhibit other biologically active molecules such as enzymes. It is also to be understood that the compounds of the present invention are capable of inhibiting any of the histone deacetylases set forth above, or any other histone deacetylases.
For example, in patients receiving HDAC inhibitors, the accumulation of acetylated histones in peripheral mononuclear cells as well as in tissue treated with HDAC
inhibitors can be determined against a suitable control.
HDAC inhibitory activity of a particular compound can be determined in vitro using, for example, an enzymatic assays which shows inhibition of at least one histone deacetylase. Further, determination of the accumulation of acetylated histones in cells treated with a particular composition can be determinative of the HDAC inhibitory activity of a compound.
Assays for the accumulation of acetylated histones are well known in the literature. See, for example, Marks, P.A. et al., J. Natl. Cancer Inst., 92:1210-1215, 2000, Butler, L.M. et al., Cancer Res. 60:5165-5170 (2000), Richon, V. M. et al., Proc. Natl. Acad.

Sci., USA, 95:3003-3007, 1998, and Yoshida, M. et al., J. Biol. Chem., 265:17174-17179, 1990.
For example, an enzymatic assay to determine the activity of an HDAC inhibitor compound can be conducted as follows. Briefly, the effect of an HDAC inhibitor compound on affinity purified human epitope-tagged (Flag) HDAC 1 can be assayed by incubating the enzyme preparation in the absence of substrate on ice for about 20 minutes with the indicated amount of inhibitor compound. Substrate ([3H]acetyl-labelled murine erythroleukemia cell-derived histone) can be added and the sample can be incubated for 20 minutes at 37 C in a total volume of 30 L.
The reaction can then be stopped and released acetate can be extracted and the amount of radioactivity release determined by scintillation counting. An altemative assay useful for determining the activity of an HDAC inhibitor compound is the "HDAC
Fluorescent Activity Assay; Drug Discovery Kit-AK-500" available from BIOMOL Research Laboratories, Inc., Plymouth Meeting, PA.
In vivo studies can be conducted as follows. Animals, for example, mice, can be injected intraperitoneally with an HDAC inhibitor compound. Selected tissues, for example, brain, spleen, liver etc, can be isolated at predetermined times, post administration. Histones can be isolated from tissues essentially as described by Yoshida et al., J. Biol.
Chem. 265:17174-17179, 1990. Equal amounts of histones (about 1 g) can be electrophoresed on 15% SDS-polyacrylamide gels and can be transferred to Hybond-P filters (available from Amersham).
Filters can be blocked with 3% milk and can be probed with a rabbit purified polyclonal anti-acetylated histone H4 antibody (aAc-H4) and anti-acetylated histone H3 antibody ((xAc-H3) (Upstate Biotechnology, Inc.). Levels of acetylated histone can be visualized using a horseradish peroxidase-conjugated goat anti-rabbit antibody (1:5000) and the SuperSignal chemiluminescent substrate (Pierce). As a loading control for the histone protein, parallel gels can be run and stained with Coomassie Blue (CB).
In addition, hydroxamic acid-based HDAC inhibitors have been shown to up regulate the expression of the p21 WAFI gene. The p21 WAFI protein is induced within 2 hours of culture with HDAC inhibitors in a variety of transformed cells using standard methods. The induction of the p21 WAFI gene is associated with accumulation of acetylated histones in the chromatin region of this gene. Induction of p21 W^FI can therefore be recognized as involved in the G1 cell cycle arrest caused by HDAC inhibitors in transformed cells.
COMBINATION THERAPY
The phosphorus compounds of the present invention can be administered alone or in combination with other therapies suitable for the disease or disorder being treated. Where separate dosage formulations are used, the phosphorus compound and the other therapeutic agent can be administered at essentially the same time (concurrently) or at separately staggered times (sequentially). The pharmaceutical combination is understood to include all these regimens.
Administration in these various ways are suitable for the present invention as long as the beneficial therapeutic effect of the phosphorus compound and the other therapeutic agent are realized by the patient at substantially the same time. In an embodiment, such beneficial effect is achieved when the target blood level concentrations of each active drug are maintained at substantially the same time.
The instant compounds are also useful in combination with known therapeutic agents and anti-cancer agents. For example, instant compounds are useful in combination with known anti-cancer agents. Combinations of the presently disclosed compounds with other anti-cancer or chemotherapeutic agents are within the scope of the invention.
Examples of such agents can be found in Cancer Principles and Practice of Oncology by V.T.
Devita and S.
Heilman (editors), 6`h edition (February 15, 2001), Lippincott Williams &
Wilkins Publishers. A
person of ordinary skill in the art would be able to discern which combinations of agents would be useful based on the particular characteristics of the drugs and the cancer involved. Such anti-cancer agents include, but are not limited to, the following: estrogen receptor modulators, androgen receptor modulators, retinoid receptor modulators, cytotoxic/cytostatic agents, antiproliferative agents, prenyl-protein transferase inhibitors, HMG-CoA
reductase inhibitors and other angiogenesis inhibitors, inhibitors of cell proliferation and survival signaling, apoptosis inducing agents, agents that interfere with cell cycle checkpoints, agents that interfere with receptor tyrosine kinases (RTKs) and cancer vaccines. The instant compounds are particularly useful when co-administered with radiation therapy.
In an embodiment, the instant compounds are also useful in combination with known anti-cancer agents including the following: estrogen receptor modulators, androgen receptor modulators, retinoid receptor modulators, cytotoxic agents, antiproliferative agents, prenyl-protein transferase inhibitors, HMG-CoA reductase inhibitors, HN
protease inhibitors, reverse transcriptase inhibitors, and other angiogenesis inhibitors.
"Estrogen receptor modulators" refers to compounds that interfere with or inhibit the binding of estrogen to the receptor, regardless of mechanism. Examples of estrogen receptor modulators include, but are not limited to, diethylstibestral, tamoxifen, raloxifene, idoxifene, LY35338 1, LY117081, toremifene, fluoxymestero, Ifulvestrant, 4-[7-(2,2-dimethyl-1-oxopropoxy-4-methyl-2-[4-[2-(1-piperidinyl)ethoxy]phenyl]-2H-1-benzopyran-3-yl]-phenyl-2,2-dimethylpropanoate, 4,4'-dihydroxybenzophenone-2,4-dinitrophenyl-hydrazone, and SH646.
Other hormonal agents include: aromatase inhibitors (e.g., aminoglutethimide, anastrozole and tetrazole), luteinizing hon none release hormone (LHRH) analogues, ketoconazole, goserelin acetate, leuprolide, megestrol acetate and mifepristone.
"Androgen receptor modulators" refers to compounds which interfere or inhibit the binding of androgens to the receptor, regardless of mechanism. Examples of androgen receptor modulators include finasteride and other 5cr-reductase inhibitors, nilutamide, flutamide, bicalutamide, liarozole, and abiraterone acetate.
"Retinoid receptor modulators" refers to compounds which interfere or inhibit the binding of retinoids to the receptor, regardless of mechanism. Examples of such retinoid receptor modulators include bexarotene, tretinoin, 13-cis-retinoic acid, 9-cis-retinoic acid, a-difluoromethylornithine, ILX23-7553, trans-N-(4'-hydroxyphenyl) retinamide, and N-4-carboxyphenyl retinamide.

"Cytotoxic/cytostatic agents" refer to compounds which cause cell death or inhibit cell proliferation primarily by interfering directly with the cell's functioning or inhibit or interfere with cell mytosis, including alkylating agents, tumor necrosis factors, intercalators, hypoxia activatable compounds, microtubule inhibitors/microtubule-stabilizing agents, inhibitors of mitotic kinesins, inhibitors of histone deacetylase, inhibitors of kinases involved in mitotic progression, antimetabolites; biological response modifiers; hormonal/anti-honnonal therapeutic agents, haematopoietic growth factors, monoclonal antibody targeted therapeutic agents, topoisomerase inhibitors, proteasome inhibitors and ubiquitin ligase inhibitors.
Examples of cytotoxic agents include, but are not limited to, sertenef, cachectin, chlorambucil, cyclophosphamide, ifosfamide, mechlorethamine, melphalan, uracil mustard, thiotepa, busulfan, carmustine, lomustine, streptozocin, tasonermin, lonidamine, carboplatin, altretamine, dacarbazine, procarbazine, prednimustine, dibromodulcitol, ranimustine, fotemustine, nedaplatin, oxaliplatin, temozolomide, heptaplatin, estramustine, improsulfan tosilate, trofosfamide, nimustine, dibrospidium chloride, pumitepa, lobaplatin, satraplatin, profiromycin, cisplatin, irofulven, dexifosfamide, cis-aminedichloro(2-methyl-pyridine)platinum, benzylguanine, glufosfamide, GPX100, (trans, trans, trans)-bis-mu-(hexane-1,6-diamine)-mu-[diamine-platinum(II)]bis[diamine(chloro)platinum (II)]tetrachloride, diarizidinylspermine, arsenic trioxide, 1-(11-dodecylamino-l0-hydroxyundecyl)-3,7-dimethylxanthine, zorubicin, doxorubicin, daunorubicin, idarubicin, anthracenedione, bleomycin, mitomycin C, dactinomycin, plicatomycin, bisantrene, mitoxantrone, pirarubicin, pinafide, valrubicin, amrubicin, antineoplaston, 3'-deamino-3'-morpholino-13-deoxo-10-hydroxycarminomycin, annamycin, galarubicin, elinafide, MEN10755, and 4-demethoxy-3-deamino-3-aziridinyl-4-methylsulphonyl-daunorubicin (see WO 00/50032).
An example of a hypoxia activatable compound is tirapazamine.
Examples of proteasome inhibitors include but are not limited to lactacystin and bortezomib.
Examples of microtubule inhibitors/microtubule-stabilising agents include vincristine, vinblastine, vindesine, vinzolidine, vinorelbine, vindesine sulfate, 3',4'-didehydro-4'-deoxy-8'-norvincaleukoblastine, podophyllotoxins (e.g., etoposide (VP-16) and teniposide (VM-26)), paclitaxel, docetaxol, rhizoxin, dolastatin, mivobulin isethionate, auristatin, cemadotin, RPR109881, BMS 184476, vinflunine, cryptophycin, 2,3,4,5,6-pentafluoro-N-(3-fluoro-4-methoxyphenyl) benzene sulfonamide, anhydrovinblastine, N,N-dimethyl-L-valyl-L-valyl-N-methyl-L-valyl-L-prolyl-L-proline-t-butylamide, TDX258, the epothilones (see for example U.S. Pat. Nos. 6,284,781 and 6,288,237) and BMS188797.
Some examples of topoisomerase inhibitors are topotecan, hycaptamine, irinotecan, rubitecan, 6-ethoxypropionyl-3',4'-O-exo-benzylidene-chartreusin, 9-methoxy-N,N-dimethyl-5-nitropyrazolo[3,4,5-kl] acridine-2-(6H) propanamine, 1-amino-9-ethyl-5-fluoro-2,3-dihydro-9-hydroxy-4-methyl-1H,12H-benzo[de]pyrano[3',4':b,7]-indolizino[1,2b]quinoline-10,13(9H,15H)dione, lurtotecan, 7-[2-(N-isopropylamino)ethyl]-(20S)camptothecin, BNP1350, BNPI1100, BN80915, BN80942, etoposide phosphate, teniposide, sobuzoxane, 2'-dimethylamino-2'-deoxy-etoposide, GL331, N-[2-(dimethylamino)ethyl]-9-hydroxy-5,6-dimethyl-6H-pyrido[4,3-b]carbazole-l-carboxamide, asulacrine, (5a, 5aB, 8aa,9b)-9-[2-[N-[2-(dimethylamino)ethyl]-N-methylamino]ethyl]-5-[4-hydro0xy-3,5-dimethoxyphenyl]-5,5a,6,8,8a,9-hexohydrofuro(3',4':6,7)naphtho(2,3-d)-1,3-dioxol-6-one, 2,3-(methylenedioxy)-5-methyl-7-hydroxy-8-methoxybenzo[c]-phenanthridinium, 6,9-bis[(2-aminoethyl)amino]benzo[g]isoguinoline-5,10-dione, 5-(3-aminopropylamino)-7,10-dihydroxy-2-(2-hydroxyethylaminomethyl)-6H-pyrazolo[4,5,1-de]acridin-6-one, N-[ 1-[2(diethylamino)ethylamino]-7-methoxy-9-oxo-9H-thioxanthen-4-ylmethyl]formamide, N-(2-(dimethylamino)ethyl)acridine-4-carboxamide, 6-[[2-(dimethylamino)ethyl]amino]-3-hydroxy-7H-indeno[2,1-c] quinolin-7-one, and dimesna.

Examples of inhibitors of mitotic kinesins, and in particular the human mitotic kinesin KSP, are described in PCT Publications WO 01/30768, WO 01/98278, WO
03/050,064, WO 03/050,122, WO 03/049,527, WO 03/049,679, WO 03/049,678 and WO 03/39460 and pending PCT Appl. Nos. US03/06403 (filed March 4, 2003), US03/15861 (filed May 19, 2003), US03/15810 (filed May 19, 2003), US03/18482 (filed June 12, 2003) and US03/18694 (filed June 12, 2003). In an embodiment inhibitors of mitotic kinesins include, but are not limited to inhibitors of KSP, inhibitors of MKLP1, inhibitors of CENP-E, inhibitors of MCAK, inhibitors of Kifl4, inhibitors of Mphosph 1 and inhibitors of Rab6-KIFL.
Examples of "histone deacetylase inhibitors" include, but are not limited to, SAHA, TSA, oxamflatin, PXD101, MG98, valproic acid and scriptaid. Further reference to other histone deacetylase inhibitors may be found in the following manuscript;
Miller, T.A. et al.
J. Med. Chem. 46(24):5097-5116 (2003).
"Inhibitors of kinases involved in mitotic progression" include, but are not limited to, inhibitors of aurora kinase, inhibitors of Polo-like kinases (PLK; in particular inhibitors of PLK-1), inhibitors of bub-1 and inhibitors of bub-R1. An example of an "aurora kinase inhibitor" is VX-680.
"Antiproliferative agents" includes antisense RNA and DNA oligonucleotides such as G3139, ODN698, RVASKRAS, GEM231, and INX3001, and antimetabolites such as enocitabine, carmofur, tegafur, pentostatin, doxifluridine, trimetrexate, fludarabine, capecitabine, galocitabine, cytarabine ocfosfate, fosteabine sodium hydrate, raltitrexed, paltitrexid, emitefur, tiazofurin, decitabine, nolatrexed, pemetrexed, nelzarabine, 2'-deoxy-2'-methylidenecytidine, 2'-fluoromethylene-2'-deoxycytidine, N-[5-(2,3-dihydro-benzofuryl)sulfonyl]-N'-(3,4-dichlorophenyl)urea, N6-[4-deoxy-4-[N2-[2(E),4(E)-tetradecadienoyl]glycylamino]-L-glycero-B-L-manno-heptopyranosyl]adenine, aplidine, ecteinascidin, troxacitabine, 4-[2-amino-4-oxo-4,6,7,8-tetrahydro-3H-pyrimidino[5,4-b] [ 1,4]thiazin-6-yl-(S)-ethyl]-2,5-thienoyl-L-glutamic acid, aminopterin, 5-flurouracil, floxuridine, methotrexate, leucovarin, hydroxyurea, thioguanine (6-TG), mercaptopurine (6-MP), cytarabine, pentostatin, fludarabine phosphate, cladribine (2-CDA), asparaginase, gemcitabine, alanosine, 11-acetyl-8-(carbamoyloxymethyl)-4-formyl-6-methoxy-l4-oxa-1,11-diazatetracyclo(7.4.1Ø0)-tetradeca-2,4,6-trien-9-yl acetic acid ester, swainsonine, lometrexol, dexrazoxane, methioninase, 2'-cyano-2'-deoxy-N4-palmitoyl-l-B-D-arabino furanosyl cytosine and 3-aminopyridine-2-carboxaldehyde thiosemicarbazone.

Examples of monoclonal antibody targeted therapeutic agents include those therapeutic agents which have cytotoxic agents or radioisotopes attached to a cancer cell specific or target cell specific monoclonal antibody. Examples include Bexxar.
"HMG-CoA reductase inhibitors" refers to inhibitors of 3-hydroxy-3-methylglutaryl-CoA reductase. Examples of HMG-CoA reductase inhibitors that may be used include but are not limited to lovastatin (MEVACOR ; see U.S. Pat. Nos.
4,231,938,4,294,926 and 4,319,039), simvastatin (ZOCOR ; see U.S. Pat. Nos. 4,444,784,4,820,850 and 4,916,239), pravastatin (PRAVACHOL ; see U.S. Pat. Nos. 4,346,227, 4,537,859, 4,410,629, 5,030,447 and 5,180,589), fluvastatin (LESCOL ; see U.S. Pat. Nos. 5,354,772, 4,911,165, 4,929,437, 5,189,164, 5,118,853, 5,290,946 and 5,356,896) and atorvastatin (LIPITOR ; see U.S. Pat. Nos.
5,273,995, 4,681,893, 5,489,691 and 5,342,952). The structural formulas of these and additional HMG-CoA reductase inhibitors that may be used in the instant methods are described at page 87 of M. Yalpani, "Cholesterol Lowering Drugs", Chemistry & Industry, pp. 85-89 (5 February 1996) and US Patent Nos. 4,782,084 and 4,885,314. The term HMG-CoA reductase inhibitor as used herein includes all pharmaceutically acceptable lactone and open-acid forms (i.e., where the lactone ring is opened to form the free acid) as well as salt and ester forms of compounds which have HMG-CoA reductase inhibitory activity, and therefor the use of such salts, esters, open-acid and lactone forms is included within the scope of this invention.
"Prenyl-protein transferase inhibitor" refers to a compound which inhibits any one or any combination of the prenyl-protein transferase enzymes, including famesyl-protein transferase (FPTase), geranylgeranyl-protein transferase type I(GGPTase-I), and geranylgeranyl-protein transferase type-II (GGPTase-II, also called Rab GGPTase).
Examples of prenyl-protein transferase inhibitors can be found in the following publications and patents: WO 96/30343, WO 97/18813, WO 97/21701, WO 97/23478, WO
97/38665, WO 98/28980, WO 98/29119, WO 95/32987, U.S. Pat. No. 5,420,245, U.S.
Pat. No.
5,523,430, U.S. Pat. No. 5,532,359, U.S. Pat. No. 5,510,510, U.S. Pat. No.
5,589,485, U.S. Pat.
No. 5,602,098, European Patent Publ. 0 618 221, European Patent Publ. 0 675 112, European Patent Publ. 0 604 181, European Patent Publ. 0 696 593, WO 94/19357, WO
95/08542, WO
95/11917, WO 95/12612, WO 95/12572, WO 95/10514, U.S. Pat. No. 5,661,152, WO
95/10515, WO 95/10516, WO 95/24612, WO 95/34535, WO 95/25086, WO 96/05529, WO 96/06138, WO
96/06193, WO 96/16443, WO 96/21701, WO 96/21456, WO 96/22278, WO 96/24611, WO
96/24612, WO 96/05168, WO 96/05169, WO 96/00736, U.S. Pat. No. 5,571,792, WO
96/17861, WO 96/33159, WO 96/34850, WO 96/34851, WO 96/30017, WO 96/30018, WO 96/30362, WO

96/30363, WO 96/31111, WO 96/31477, WO 96/31478, WO 96/31501, WO 97/00252, WO
97/03047, WO 97/03050, WO 97/04785, WO 97/02920, WO 97/17070, WO 97/23478, WO
97/26246, WO 97/30053, WO 97/44350, WO 98/02436, and U.S. Pat. No. 5,532,359.
For an example of the role of a prenyl-protein transferase inhibitor on angiogenesis see European J. of Cancer, Vol. 35, No. 9, pp.1394-1401 (1999).
"Angiogenesis inhibitors" refers to compounds that inhibit the formation of new blood vessels, regardless of mechanism. Examples of angiogenesis inhibitors include, but are not limited to, tyrosine kinase inhibitors, such as inhibitors of the tyrosine kinase receptors Fit-1 (VEGFRI) and Flk-1/KDR (VEGFR2), inhibitors of epidermal-derived, fibroblast-derived, or platelet derived growth factors, MlVIP (matrix metalloprotease) inhibitors, integrin blockers, interferon-a, interleukin-12, erythropoietin (epoietin-a), granulocyte-CSF
(filgrastin), granulocyte, macrophage-CSF (sargramostim), pentosan polysulfate, cyclooxygenase inhibitors, including nonsteroidal anti-inflammatories (NSAIDs) like aspirin and ibuprofen as well as selective cyclooxy-genase-2 inhibitors like celecoxib and rofecoxib (PNAS, Vol. 89, p. 7384 (1992); JNCI, Vol. 69, p. 475 (1982); Arch. Opthalmol., Vol. 108, p.573 (1990); Anat. Rec., Vol.
238, p. 68 (1994); FEBS Letters, Vol. 372, p. 83 (1995); Clin, Orthop. Vol.
313, p. 76 (1995); J.
Mol. Endocrinol., Vol. 16, p.107 (1996); Jpn. J. Pharmacol., Vol. 75, p. 105 (1997); Cancer Res., Vol. 57, p. 1625 (1997); Cell, Vol. 93, p. 705 (1998); Intl. J. Mol.
Med., Vol. 2, p. 715 (1998); J. Biol. Chem., Vol. 274, p. 9116 (1999)), steroidal anti-inflammatories (such as corticosteroids, mineralocorticoids, dexamethasone, prednisone, prednisolone, methylpred, betamethasone), carboxyamidotriazole, combretastatin A-4, squalamine, 6-O-chloroacetyl-carbonyl)-fumagillol, thalidomide, angiostatin, troponin-1, angiotensin II
antagonists (see Fernandez et al., J. Lab. Clin. Med. 105:141-145 (1985)), and antibodies to VEGF (see, Nature Biotechnology, Vol. 17, pp.963-968 (October 1999); Kim et al., Nature, 362, 841-844 (1993);
WO 00/44777; and WO 00/61186).
Other therapeutic agents that modulate or inhibit angiogenesis and may also be used in combination with the compounds of the instant invention include agents that modulate or inhibit the coagulation and fibrinolysis systems (see review in Clin. Chem.
La. Med. 38:679-692 (2000)). Examples of such agents that modulate or inhibit the coagulation and fibrinolysis pathways include, but are not limited to, heparin (see Thromb. Haemost. 80:10-23 (1998)), low molecular weight heparins and carboxypeptidase U inhibitors (also known as inhibitors of active thrombin activatable fibrinolysis inhibitor [TAFIa]) (see Thrombosis Res.
101:329-354 (2001)).

TAFIa inhibitors have been described in PCT Publication WO 03/013,526 and U.S.
Ser. No.
60/349,925 (filed January 18, 2002).
"Agents that interfere with cell cycle checkpoints" refer to compounds that inhibit protein kinases that transduce cell cycle checkpoint signals, thereby sensitizing the cancer cell to DNA damaging agents. Such agents include inhibitors of ATR, ATM, the Chkl and Chk2 kinases and cdk and cdc kinase inhibitors and are specifically exemplified by hydroxystaurosporin, flavopiridol, CYC202 (Cyclacel) and BMS-387032.
"Agents that interfere with receptor tyrosine kinases (RTKs)" refer to compounds that inhibit RTKs and therefore mechanisms involved in oncogenesis and tumor progression.
Such agents include inhibitors of c-Kit, Eph, PDGF, Flt3 and c-Met. Further agents include inhibitors of RTKs shown as described by Bume-Jensen and Hunter, Nature, 411:355-365, 2001.
"Inhibitors of cell proliferation and survival signaling pathway" refer to pharmaceutical agents that inhibit cell surface receptors and signal transduction cascades dowiistream of those surface receptors. Such agents include inhibitors of inhibitors of EGFR
(for example gefitinib and erlotinib), inhibitors of ERB-2 (for example trastuzumab), inhibitors of IGFR, inhibitors of CD20 (rituximab), inhibitors of cytokine receptors, inhibitors of MET, inhibitors of P13K (for example LY294002), serine/threonine kinases (including but not limited to inhibitors of Akt such as described in (WO 03/086404, WO 03/086403, WO
03/086394, WO
03/086279, WO 02/083675, WO 02/083139, WO 02/083140 and WO 02/083138), inhibitors of Raf kinase (for example BAY-43-9006 ), inhibitors of MEK (for example CI-1040 and PD-098059) and inhibitors of mTOR (for example Wyeth CCI-779 and Ariad AP23573).
Such agents include small molecule inhibitor compounds and antibody antagonists.
"Apoptosis inducing agents" include activators of TNF receptor family members (including the TRAIL receptors).
The invention also encompasses combinations with NSAID's which are selective COX-2 inhibitors. For purposes of this specification NSAID's which are selective inhibitors of COX-2 are defined as those which possess a specificity for inhibiting COX-2 over COX-1 of at least 100 fold as measured by the ratio of IC50 for COX-2 over IC50 for COX-1 evaluated by cell or microsomal assays. Such compounds include, but are not limited to those disclosed in U.S. Pat. 5,474,995, U.S. Pat. 5,861,419, U.S. Pat. 6,001,843, U.S. Pat.
6,020,343, U.S. Pat.
5,409,944, U.S. Pat. 5,436,265, U.S. Pat. 5,536,752, U.S. Pat. 5,550,142, U.S.
Pat. 5,604,260, U.S. 5,698,584, U.S. Pat. 5,710,140, WO 94/15932, U.S. Pat. 5,344,991, U.S.
Pat. 5,134,142, U.S. Pat. 5,380,738, U.S. Pat. 5,393,790, U.S. Pat. 5,466,823, U.S. Pat.
5,633,272, and U.S. Pat.
5,932,598.

Inhibitors of COX-2 that are particularly useful in the instant method of treatment are: 3-phenyl-4-(4-(methylsulfonyl)phenyl)-2-(5H)-furanone; and 5-chloro-3-(4-methylsulfonyl)phenyl-2-(2-methyl-5-pyridinyl)pyridine; or a pharmaceutically acceptable salt thereof.
Compounds that have been described as specific inhibitors of COX-2 and are therefore useful in the present invention include, but are not limited to:
parecoxib, CELEBREX
and BEXTRA or a pharmaceutically acceptable salt thereof.
Other examples of angiogenesis inhibitors include, but are not limited to, endostatin, ukrain, ranpirnase, IM862, 5-methoxy-4-[2-methyl-3-(3-methyl-2-butenyl)oxiranyl]-1-oxaspiro[2,5]oct-6-yl(chloroacetyl)carbamate, acetyldinanaline, 5-amino-l-[[3,5-dichloro-4-(4-chlorobenzoyl)phenyl]methyl]-1H-1,2,3-triazole-4-carboxamide,CM101, squalamine, combretastatin, RPI4610, NX31838, sulfated mannopentaose phosphate, 7,7-(carbonyl-bis[imino-N-methyl-4,2-pyrrolocarbonylimino[N-methyl-4,2-pyrrole]-carbonylimino]-bis-(1,3-naphthalene disulfonate), and 3-[(2,4-dimethylpyrrol-5-yl)methylene]-2-indolinone (SU5416).
As used above, "integrin blockers" refers to compounds which selectively antagonize, inhibit or counteract binding of a physiological ligand to the av03 integrin, to compounds which selectively antagonize, inhibit or counteract binding of a physiological ligand to the av[35 integrin, to compounds which antagonize, inhibit or counteract binding of a physiological ligand to both the av(33 integrin and the av[35 integrin, and to compounds which antagonize, inhibit or counteract the activity of the particular integrin(s) expressed on capillary endothelial cells. The tenn also refers to antagonists of the avR6, avR8, a 1 R 1, a2R 1, a5 R 1, a01 and a6[i4 integrins. The term also refers to antagonists of any combination of a03, avR5, avR6, avR8, a1R1, a201, a5R1, a601 and a604 integrins.

Some specific examples of tyrosine kinase inhibitors include N-(trifluoromethylphenyl)-5-methylisoxazol-4-carboxamide, 3-[(2,4-dimethylpyrrol-yl)methylidenyl)indolin-2-one, 17-(allylamino)-17-demethoxygeldanamycin, 4-(3-chloro-4-fluorophenylamino)-7-methoxy-6-[3-(4-morpholinyl)propoxyl]quinazoline, N-(3-ethynylphenyl)-6,7-bis(2-methoxyethoxy)-4-quinazolinamine, BIBX1382, 2,3,9,10,11,12-hexahydro-1 0-(hydroxymethyl)-10-hydroxy-9-methyl-9,12-epoxy-1 H-diindolo[
1,2,3-fg:3',2',1 '-kl]pyrrolo[3,4-i][1,6]benzodiazocin-l-one, SH268, genistein, imatinib (STI571), CEP2563, 4-(3-chlorophenylamino)-5,6-dimethyl-7H-pyrrolo[2,3-d]pyrimidinemethane sulfonate, 4-(3-bromo-4-hydroxyphenyl)amino-6,7-dimethoxyquinazoline, 4-(4'-hydroxyphenyl)amino-6,7-dimethoxyquinazoline, SU6668, STI571A, N-4-chlorophenyl-4-(4-pyridylmethyl)-1-phthalazinamine, and EMD121974.
Combinations with compounds other than anti-cancer compounds are also encompassed in the instant methods. For example, combinations of the instantly claimed compounds with PPAR-y (i.e., PPAR-gamma) agonists and PPAR-S (i.e., PPAR-delta) agonists are useful in the treatment of certain malingnancies. PPAR-y and PPAR-S are the nuclear peroxisome proliferator-activated receptors y and S. The expression of PPAR--t on endothelial cells and its involvement in angiogenesis has been reported in the literature (see J. Cardiovasc.
Pharmacol. 1998; 31:909-913; J. Biol. Chem. 1999; 274:9116-9121; Invest.
Ophthalmol Vis.
Sci. 2000; 41:2309-2317). More recently, PPAR-y agonists have been shown to inhibit the angiogenic response to VEGF in vitro; both troglitazone and rosiglitazone maleate inhibit the development of retinal neovascularization in mice. (Arch. Ophthamol. 2001;
119:709-717).
Examples of PPAR-y agonists and PPAR- y/a agonists include, but are not limited to, thiazolidinediones (such as DRF2725, CS-011, troglitazone, rosiglitazone, and pioglitazone), fenofibrate, gemfibrozil, clofibrate, GW2570, SB219994, AR-H039242, JTT-501, MCC-555, GW2331, GW409544, NN2344, KRP297, NP0110, DRF4158, NN622, G1262570, PNU182716, DRF552926, 2-[(5,7-dipropyl-3-trifluoromethyl-1,2-benzisoxazol-6-yl)oxy]-2-methylpropionic acid (disclosed in USSN 09/782,856), and 2(R)-7-(3-(2-chloro-4-(4-fluorophenoxy) phenoxy)propoxy)-2-ethylchromane-2-carboxylic acid (disclosed in USSN
60/235,708 and 60/244,697).
Another embodiment of the instant invention is the use of the presently disclosed compounds in combination with gene therapy for the treatment of cancer. For an overview of genetic strategies to treating cancer see Hall et al (Am JHum Genet 61:785-789, 1997) and Kufe et al (Cancer Medicine, 5th Ed, pp 876-889, BC Decker, Hamilton 2000). Gene therapy can be used to deliver any tumor suppressing gene. Examples of such genes include, but are not limited to, p53, which can be delivered via recombinant virus-mediated gene transfer (see U.S. Pat. No.
6,069,134, for example), Duc-4, NF-1, NF-2, RB, WT1, BRCA1, BRCA2, a uPA/uPAR
antagonist ("Adenovirus-Mediated Delivery of a uPA/uPAR Antagonist Suppresses Angiogenesis-Dependent Tumor Growth and Dissemination in Mice," Gene Therapy, August 1998; 5(8):1105-13), and interferon gamma (J. Immunol. 2000; 164:217-222).
The compounds of the instant invention may also be administered in combination with an inhibitor of inherent multidrug resistance (MDR), in particular MDR
associated with high levels of expression of transporter proteins. Such MDR inhibitors include inhibitors of p-glycoprotein (P-gp), such as LY335979, XR9576, OC144-093, R101922, VX853 and (valspodar).
A compound of the present invention may be employed in conjunction with anti-emetic agents to treat nausea or emesis, including acute, delayed, late-phase, and anticipatory emesis, which may result from the use of a compound of the present invention, alone or with radiation therapy. For the prevention or treatment of emesis, a compound of the present invention may be used in conjunction with other anti-emetic agents, especially neurokinin-1 receptor antagonists, 5HT3 receptor antagonists, such as ondansetron, granisetron, tropisetron, and zatisetron, GABAB receptor agonists, such as baclofen, a corticosteroid such as Decadron (dexamethasone), Kenalog, Aristocort, Nasalide, Preferid, Benecorten or others such as disclosed in U.S.Patent Nos. 2,789,118, 2,990,401, 3,048,581, 3,126,375, 3,929,768, 3,996,359, 3,928,326 and 3,749,712, an antidopaminergic, such as the phenothiazines (for example prochlorperazine, fluphenazine, thioridazine and mesoridazine), metoclopramide or dronabinol. In an embodiment, an anti-emesis agent selected from a neurokinin-1 receptor antagonist, a 5HT3 receptor antagonist and a corticosteroid is administered as an adjuvant for the treatment or prevention of emesis that may result upon administration of the instant compounds.
Neurokinin-1 receptor antagonists of use in conjunction with the compounds of the present invention are fully described, for example, in U.S. Pat. Nos.
5,162,339, 5,232,929, 5,242,930, 5,373,003, 5,387,595, 5,459,270, 5,494,926, 5,496,833, 5,637,699, 5,719,147;
European Patent Publication Nos. EP 0 360 390, 0 394 989, 0 428 434, 0 429 366, 0 430 771, 0 436 334, 0 443 132, 0 482 539, 0 498 069, 0 499 313, 0 512 901, 0 512 902, 0 514 273, 0 514 274, 0 514 275, 0 514 276, 0 515 681, 0 517 589, 0 520 555, 0 522 808, 0 528 495, 0 532 456, 0 533 280, 0 536 817, 0 545 478, 0 558 156, 0 577 394, 0 585 913,0 590 152, 0 599 538, 0 610 793, 0 634 402, 0 686 629, 0 693 489, 0 694 535, 0 699 655, 0 699 674, 0 707 006, 0 708 101, 0 709 375, 0 709 376, 0 714 891, 0 723 959, 0 733 632 and 0 776 893; PCT
International Patent Publication Nos. WO 90/05525, 90/05729, 91/09844, 91/18899, 92/01688, 92/06079, 92/12151, 92/15585, 92/17449, 92/20661, 92/20676, 92/21677, 92/22569, 93/00330, 93/00331, 93/01159, 93/01165, 93/01169, 93/01170, 93/06099, 93/09116, 93/10073, 93/14084, 93/14113, 93/18023, 93/19064, 93/21155, 93/21181, 93/23380, 93/24465, 94/00440, 94/01402, 94/02461, 94/02595, 94/03429, 94/03445, 94/04494, 94/04496, 94/05625, 94/07843, 94/08997, 94/10165, 94/10167, 94/10168, 94/10170, 94/11368, 94/13639, 94/13663, 94/14767, 94/15903, 94/19320, 94/19323, 94/20500, 94/26735, 94/26740, 94/29309, 95/02595, 95/04040, 95/04042, 95/06645, 95/07886, 95/07908, 95/08549, 95/11880, 95/14017, 95/15311, 95/16679, 95/17382, 95/18124, 95/18129, 95/19344, 95/20575, 95/21819, 95/22525, 95/23798, 95/26338, 95/28418, 95/30674, 95/30687, 95/33744, 96/05181, 96/05193, 96/05203, 96/06094, 96/07649, 96/10562, 96/16939, 96/18643, 96/20197, 96/21661, 96/29304, 96/29317, 96/29326, 96/29328, 96/31214, 96/32385, 96/37489, 97/01553, 97/01554, 97/03066, 97/08144, 97/14671, 97/17362, 97/18206, 97/19084, 97/19942 and 97/21702; and in British Patent Publication Nos. 2 266 529, 2 268 931, 2 269 170, 2 269 590, 2 271 774, 2 292 144, 2 293 168, 2 293 169, and 2 302 689. The preparation of such compounds is fully described in the aforementioned patents and publications.
In an embodiment, the neurokinin-1 receptor antagonist for use in conjunction with the compounds of the present invention is selected from: 2-(R)-(1-(R)-(3,5-bis(trifluoromethyl)phenyl)ethoxy)-3-(S)-(4-fluorophenyl)-4-(3-(5-oxo-1 H,4H-1,2,4-triazolo)methyl)morpholine, or a pharmaceutically acceptable salt thereof, which is described in U.S. Pat. No. 5,719,147.
A compound of the instant invention may also be administered with an agent useful in the treatment of anemia. Such an anemia treatment agent is, for example, a continuous eythropoiesis receptor activator (such as epoetin alfa).
A compound of the instant invention may also be administered with an agent useful in the treatment of neutropenia. Such a neutropenia treatment agent is, for example, a hematopoietic growth factor which regulates the production and function of neutrophils such as a human granulocyte colony stimulating factor, (G-CSF). Examples of a G-CSF
include filgrastim.
A compound of the instant invention may also be administered with an immunologic-enhancing drug, such as levamisole, bacillus Calmette-Guerin, octreotide, isoprinosine and Zadaxin.
A compound of the instant invention may also be useful for treating or preventing cancer, including bone cancer, in combination with bisphosphonates (understood to include bisphosphonates, diphosphonates, bisphosphonic acids and diphosphonic acids).
Examples of bisphosphonates include but are not limited to: etidronate (Didronel), pamidronate (Aredia), alendronate (Fosamax), risedronate (Actonel), zoledronate (Zometa), ibandronate (Boniva), incadronate or cimadronate, clodronate, EB-1053, minodronate, neridronate, piridronate and tiludronate including any and all pharmaceutically acceptable salts, derivatives, hydrates and mixtures thereof.

A compound of the instant invention may also be useful for treating or preventing breast cancer in combination with aromatase inhibitors. Examples of aromatase inhibitors include but are not limited to anastrozole, letrozole and exemestane.
A compound of the instant invention may also be useful for treating or preventing cancer in combination with siRNA therapeutics.
A compound of the instant invention may also be useful for treating or preventing cancer in combination withcompounds which induce terminal differentiation of the neoplastic cells. Suitable differentiation agents include the compounds disclosed in any one or more of the following references.
a) Polar compounds (Marks et al (1987); Friend, C., Scher, W., Holland, J. W., and Sato, T. (1971) Proc. Natl. Acad Sci. (USA) 68: 378-382; Tanaka, M., Levy, J., Terada, M., Breslow, R., Riflcind, R. A., and Marks, P. A. (1975) Proc. Natl. Acad. Sci.
(USA) 72: 1003-1006; Reuben, R. C., Wife, R. L., Breslow, R., Rifkind, R. A., and Marks, P.
A. (1976) Proc.
Natl. Acad. Sci. (USA) 73: 862-866);
b) Derivatives of vitamin D and retinoic acid (Abe, E., Miyaura, C., Sakagami, H., Takeda, M., Konno, K., Yamazaki, T., Yoshika, S., and Suda, T. (1981) Proc. Natl. Acad.
Sci. (CJSA) 78: 4990-4994; Schwartz, E. L., Snoddy, J. R., Kreutter, D., Rasmussen, H., and Sartorelli, A. C. (1983) Proc. Am. Assoc. Cancer Res. 24: 18; Tanenaga, K., Hozumi, M., and Sakagami, Y. (1980) Cancer Res. 40: 914-919);
c) Steroid hormones (Lotem, J. and Sachs, L. (1975) Int. J. Cancer IS: 731-740);
d) Growth factors (Sachs, L. (1978) Nature (Lond.) 274: 535, Metcalf, D.
(1985) Science, 229: 16-22);
e) Proteases (Scher, W., Scher, B. M., and Waxman, S. (1983) Exp. Hematol. 11:
490-498; Scher, W., Scher, B. M., and Waxman, S. (1982) Biochem. & Biophys.
Res. Comm.
109: 348-354);
f) Tumor promoters (Huberman, E. and Callaham, M. F. (1979) Proc. Natl. Acad.
Sci. (USA) 76: 1293-1297; Lottem, J. and Sachs, L. (1979) Proc. Natl. Acad.
Sci. (USA) 76:
5158-5162); and g) inhibitors of DNA or RNA synthesis (Schwartz, E. L. and Sartorelli, A. C.
(1982) Cancer Res. 42: 2651-2655, Terada, M., Epner, E., Nudel, U., Salmon, J., Fibach, E., Rifkind, R. A., and Marks, P. A. (1978) Proc. Natl. Acad. Sci. (USA) 75: 2795-2799; Morin, M.
J. and Sartorelli, A. C. (1984) Cancer Res 44: 2807-2812; Schwartz, E. L., Brown, B. J., Nierenberg, M., Marsh, J. C., and Sartorelli, A. C. (1983) Cancer Res. 43:
2725-2730; Sugano, H., Furusawa, M., Kawaguchi, T., and Ikawa, Y. (1973) Bibl. Hematol. 39: 943-954; Ebert, P. S., Wars, I., and Buell, D. N. (1976) Cancer Res. 36: 1809-1813; Hayashi, M., Okabe, J., and Hozumi, M. (1979) Gann 70: 235-238).
A compound of the instant invention may also be useful for treating or preventing cancer in combination with -t-secretase inhibitors.
Also included in the scope of the claims is a method of treating cancer that comprises administering a therapeutically effective amount of a compound of Formula I in combination with radiation therapy and/or in combination with a second compound selected from: an estrogen receptor modulator, an androgen receptor modulator, a retinoid receptor modulator, a cytotoxiccytostatic agent, an antiproliferative agent, a prenyl-protein transferase inhibitor, an HMG-CoA reductase inhibitor, an HIV protease inhibitor, a reverse transcriptase inhibitor, an angiogenesis inhibitor, PPAR-y agonists, PPAR-S agonists, an inhibitor of inherent multidrug resistance, an anti-emetic agent, an agent useful in the treatment of anemia, an agent useful in the treatment of neutropenia, an immunologic-enhancing drug, an inhibitor of cell proliferation and survival signaling, a bisphosphonate, an aromatase inhibitor, an siRNA
therapeutic, y-secretase inhibitors, agents that interfere with receptor tyrosine kinases (RTKs) and an agent that interferes with a cell cycle checkpoint.
The compounds of the instant invention are useful in combination with the following therapeutic agents: abarelix (Plenaxis depot ); aldesleukin (Prokine );
Aldesleukin (Proleukin ); Alemtuzumabb (Campath ); alitretinoin (Panretin(m); allopurinol (Zyloprim );
altretamine (Hexalen ); amifostine (Ethyol ); anastrozole (Arimidex ); arsenic trioxide (Trisenox ); asparaginase (Elspar ); azacitidine (Vidaza ); bevacuzimab (Avastin(&);
bexarotene capsules (Targretin ); bexarotene gel (Targretin ); bleomycin (Blenoxane );
bortezomib (Velcade ); busulfan intravenous (Busulfex ); busulfan oral (Myleran );
calusterone (Methosarb ); capecitabine (Xeloda ); carboplatin (Paraplatin );
carmustine (BCNU , BiCNU ); carmustine (Gliadel ); carmustine with Polifeprosan 20 Implant (Gliadel Wafer ); celecoxib (Celebrex ); cetuximab (Erbitux ); chlorambucil (Leukeran ); cisplatin (Platinol ); cladribine (Leustatin , 2-CdA ); clofarabine (Clolar );
cyclophosphamide (Cytoxan , Neosar ); cyclophosphamide (Cytoxan Injection ); cyclophosphamide (Cytoxan Tablet ); cytarabine (Cytosar-U ); cytarabine liposomal (DepoCyt(&);
dacarbazine (DTIC-Dome ); dactinomycin, actinomycin D(Cosmegen ); Darbepoetin alfa (Aranesp );
daunorubicin liposomal (DanuoXome(g); daunorubicin, daunomycin (Daunorubicin(O);

daunorubicin, daunomycin (Cerubidine ); Denileukin diftitox (Ontak );
dexrazoxane (Zinecard ); docetaxel (Taxotere ); doxorubicin (Adriamycin PFS ); doxorubicin (Adriamycin , Rubex ); doxorubicin (Adriamycin PFS Injection ); doxorubicin liposomal (Doxil ); DROMOSTANOLONE PROPIONATE (DROMOSTANOLONE );
DROMOSTANOLONE PROPIONATE (MASTERONE INJECTION ); Elliott's B Solution (Elliott's B Solution ); epirubicin (Ellence ); Epoetin alfa (epogen );
erlotinib (Tarceva );
estramustine (Emcyt ); etoposide phosphate (Etopophos ); etoposide, VP-16 (Vepesid );
exemestane (Aromasin ); Filgrastim (Neupogen ); floxuridine (intraarterial) (FUDR );
fludarabine (Fludara ); fluorouracil, 5-FU (Adrucil ); fulvestrant (Faslodex ); gefitinib (Iressa ); gemcitabine (Gemzar ); gemtuzumab ozogamicin (Mylotarg ); goserelin acetate (Zoladex Implant ); goserelin acetate (Zoladex ); histrelin acetate (Histrelin implant );
hydroxyurea (Hydrea ); Ibritumomab Tiuxetan (Zevalin ); idarubicin (Idamycin ); ifosfamide (IFEX ); imatinib mesylate (Gleevec ); interferon alfa 2a (Roferon A );
Interferon alfa-2b (Intron A ); irinotecan (Camptosar ); lenalidomide (Revlirnid ); letrozole (Femara(ft leucovorin (Wellcovorin , Leucovorin ); Leuprolide Acetate (Eligard );
levamisole (Ergamisol ); lomustine, CCNU (CeeBU ); meclorethamine, nitrogen mustard (Mustargen );
megestrol acetate (Megace ); melphalan, L-PAM (Alkeran ); mercaptopurine, 6-MP
(Purinethol ); mesna (Mesnex ); mesna (Mesnex tabsm); methotrexate (Methotrexate );
methoxsalen (Uvadex ); mitomycin C(Mutamycin ); mitotane (Lysodren );
mitoxantrone (Novantrone ); nandrolone phenpropionate (Durabolin-50 ); nelarabine (Arranon );
Nofetumomab (Verluma ); Oprelvekin (Neumega ); oxaliplatin (Eloxatin );
paclitaxel (Paxene ); paclitaxel (Taxol ); paclitaxel protein-bound particles (Abraxane ); palifermin (Kepivance ); pamidronate (Aredia ); pegademase (Adagen (Pegademase Bovine) );
pegaspargase (Oncaspar ); Pegfilgrastim (Neulasta ); pemetrexed disodium (Alimta );
pentostatin (Nipent ); pipobroman (Vercyte ); plicamycin, mithramycin (Mithracin );
porfimer sodium (Photofrin ); procarbazine (Matulane ); quinacrine (Atabrine ); Rasburicase (Elitek ); Rituximab (Rituxan ); sargramostim (Leukine ); Sargramostim (Prokine );
sorafenib (Nexavar ); streptozocin (Zanosar ); sunitinib maleate (Sutent );
talc (Sclerosol );
tamoxifen (Nolvadex ); temozolomide (Temodar ); teniposide, VM-26 (Vumon );
testolactone (Teslac ); thioguanine, 6-TG (Thioguanine ); thiotepa (Thioplex ); topotecan (Hycamtin ); toremifene (Fareston ); Tositumomab (BexxarG); Tositumomab/I-131 tositumomab (Bexxar ); Trastuzumab (Herceptin ); tretinoin, ATRA (Vesanoid );
Uracil Mustard (Uracil Mustard Capsules ); valrubicin (Valstar(D); vinblastine (Velban ); vincristine (Oncovin ); vinorelbine (Navelbine ); vinorelbine (Navelbine ); zoledronate (Zometa ); and zoledronic acid (Zometa ).
The use of all of these approaches in combination with the phosphorus compounds described herein are within the scope of the present invention.
DOSAGES AND DOSING SCHEDULES
The dosage regimen utilizing the phosphorus derivatives of the present invention can be selected in accordance with a variety of factors including type, species, age, weight, sex and the type of cancer being treated; the severity (i.e., stage) of the disease to be treated; the route of administration; the renal and hepatic function of the patient; and the particular compound or salt thereof employed. An ordinarily skilled physician or veterinarian can readily determine and prescribe the effective amount of the drug required to treat, for example, to prevent, inhibit (fully or partially) or arrest the progress of the disease.
For oral administration, suitable daily dosages are for example between about 4000 mg administered orally once-daily, twice-daily or three times-daily, continuous (every day) or intermittently (e.g., 3-5 days a week). For example, when used to treat the desired disease, the dose of the phosphorus compound can range between about 2 mg to about 2000 mg per day.
The phosphorus derivative is administered once daily (QD), or divided into multiple daily doses such as twice daily (BID), and three times daily (TID).
For administration once a day, a suitably prepared medicament would therefore contain all of the needed daily dose.
For administration twice a day, a suitably prepared medicament would therefore contain half of the needed daily dose. For administration three times a day, a suitably prepared medicament would therefore contain one third of the needed daily dose.
In addition, the administration can be continuous, i.e., every day, or intermittently.
The terms "intermittent" or "intermittently" as used herein means stopping and starting at either regular or irregular intervals. For example, intermittent administration of an HDAC inhibitor may be administration one to six days per week or it may mean administration in cycles (e.g., daily administration for two to eight consecutive weeks, then a rest period with no administration for up to one week) or it may mean administration on altemate days.
Typically, an intravenous formulation may be prepared which contains a concentration of the phosphorus derivative of between about 1.0 mg/mL to about 10 mg/mL. In one example, a sufficient volume of intravenous formulation can be administered to a patient in a day such that the total dose for the day is between about I and about 1500 mg/mZ.

Subcutaneous formulations, preferably prepared according to procedures well known in the art at a pH in the range between about 5 and about 12, also include suitable buffers and isotonicity agents, as described below. They can be formulated to deliver a daily dose of HDAC inhibitor in one or more daily subcutaneous administrations, e.g., one, two or three times each day.
The compounds can also be administered in intranasal form via topical use of suitable intranasal vehicles, or via transdennal routes, using those fonns of transdermal skin patches well known to those of ordinary skill in that art. To be administered in the form of a transdermal delivery system, the dosage administration will, or course, be continuous rather than intermittent throughout the dosage regime.
It should be apparent to a person skilled in the art that the various modes of administration, dosages and dosing, schedules described herein merely set forth specific embodiments and should not be construed as limiting the broad scope of the invention. Any pennutations, variations and combinations of the dosages and dosing schedules are included within the scope of the present invention.
The term "administration" and variants thereof (e.g., "administering" a compound) in reference to a compound of the invention means introducing the compound or a prodrug of the compound into the system of the animal in need of treatment.
When a compound of the invention or prodrug thereof is provided in combination with one or more other active agents (e.g., a cytotoxic agent, etc.), "administration" and its variants are each understood to include concurrent and sequential introduction of the compound or prodrug thereof and other agents.

As used herein, the term "composition" is intended to encompass a product comprising the specified ingredients in the specified amounts, as well as any product which results, directly or indirectly, from combination of the specified ingredients in the specified amounts.

PHARMACEUTICAL COMPOSITIONS
The compounds of the invention, and derivatives, fragments, analogs, homologs pharmaceutically acceptable salts or hydrate thereof, can be incorporated into pharmaceutical compositions suitable for oral administration, together with a pharmaceutically acceptable carrier or excipient. Such compositions typically comprise a therapeutically effective amount of any of the compounds above, and a pharmaceutically acceptable carrier. In one embodiment, the effective amount is an amount effective to selectively induce terrriinal differentiation of suitable neoplastic cells and less than an amount which causes toxicity in a patient.
Any inert excipient that is commonly used as a carrier or diluent may be used in the formulations of the present invention, such as for example, a gum, a starch, a sugar, a cellulosic material, an acrylate, or mixtures thereof. A preferred diluent is microcrystalline cellulose. The compositions may further comprise a disintegrating agent (e.g., croscarmellose sodium) and a lubricant (e.g., magnesium stearate), and in addition may comprise one or more additives selected from a binder, a buffer, a protease inhibitor, a surfactant, a solubilizing agent, a plasticizer, an emulsifier, a stabilizing agent, a viscosity increasing agent, a sweetener, a film forming agent, or any combination thereof. Furthermore, the compositions of the present invention may be in the fonm of controlled release or immediate release formulations.
In one embodiment, the pharmaceutical compositions are administered orally, and are thus formulated in a form suitable for oral administration, i.e., as a solid or a liquid preparation. Suitable solid oral formulations include tablets, capsules, pills, granules, pellets and the like. Suitable liquid oral formulations include solutions, suspensions, dispersions, emulsions, oils and the like. In one embodiment of the present invention, the composition is formulated in a capsule. In accordance with this embodiment, the compositions of the present invention comprise in addition to the phosphorus derivative active compound and the inert carrier or diluent, a hard gelatin capsule.
As used herein, "pharmaceutically acceptable carrier" is intended to include any and all solvents, dispersion media, coatings, antibacterial and antifungal agents, isotonic and absorption delaying agents, and the like, compatible with pharmaceutical administration, such as sterile pyrogen-free water. Suitable carriers are described in the most recent edition of Remington's Pharmaceutical Sciences, a standard reference text in the field, which is incorporated herein by reference. Preferred examples of such carriers or diluents include, but are not limited to, water, saline, finger's solutions, dextrose solution, and 5%
human serum albumin.
Liposomes and non-aqueous vehicles such as fixed oils may also be used. The use of such media and agents for pharmaceiutically active substances is well known in the art. Except insofar as any conventional media or agent is incompatible with the active compound, use thereof in the compositions is contemplated. Supplementary active compounds can also be incorporated into the compositions.
Solid carriers/diluents include, but are not limited to, a gum, a starch (e.g., corn starch, pregelatinized starch), a sugar (e.g., lactose, mannitol, sucrose, dextrose), a cellulosic material (e.g., microcrystalline cellulose), an acrylate (e.g., polymethylacrylate), calcium carbonate, magnesium oxide, talc, or mixtures thereof.
For liquid formulations, pharmaceutically acceptable carriers may be aqueous or non-aqueous solutions, suspensions, emulsions or oils. Examples of non-aqueous solvents are propylene glycol, polyethylene glycol, and injectable organic esters such as ethyl oleate.
Aqueous carriers include water, alcoholic/aqueous solutions, emulsions or suspensions, including saline and buffered media. Examples of oils are those of petroleum, animal, vegetable, or synthetic origin, for example, peanut oil, soybean oil, mineral oil, olive oil, sunflower oil, and fish-liver oil. Solutions or suspensions can also include the following components: a sterile diluent such as water for injection, saline solution, fixed oils, polyethylene glycols, glycerine, propylene glycol or other synthetic solvents; antibacterial agents such as benzyl alcohol or methyl parabens; antioxidants such as ascorbic acid or sodium bisulfite;
chelating agents such as ethylenediaminetetraacetic acid (EDTA); buffers such as acetates, citrates or phosphates, and agents for the adjustment of tonicity such as sodium chloride or dextrose. The pH can be adjusted with acids or bases, such as hydrochloric acid or sodium hydroxide.
In addition, the compositions may further comprise binders (e.g., acacia, cornstarch, gelatin, carbomer, ethyl cellulose, guar gum, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, povidone), disintegrating agents (e.g., comstarch, potato starch, alginic acid;
silicon dioxide, croscarmellose sodium, crospovidone, guar gum, sodium starch glycolate, Primogel), buffers (e.g., tris-HCI, acetate, phosphate) of various pH and ionic strength, additives such as albumin or gelatin to prevent absorption to surfaces, detergents (e.g., Tween 20, Tween 80, Pluronic F68, bile acid salts), protease inhibitors, surfactants (e.g., sodium lauryl sulfate), permeation enhancers, solubilizing agents (e.g., glycerol, polyethylene glycerol), a glidant (e.g., colloidal silicon dioxide), anti-oxidants (e.g., ascorbic acid, sodium metabisulfite, butylated hydroxyanisole), stabilizers (e.g., hydroxypropyl cellulose, hyroxypropylmethyl cellulose), viscosity increasing agents (e.g., carbomer, colloidal silicon dioxide, ethyl cellulose, guar gum), sweeteners (e.g., sucrose, aspartame, citric acid), flavoring agents (e.g., peppermint, methyl salicylate, or orange flavoring), preservatives (e.g., Thimerosal, benzyl alcohol, parabens), lubricants (e.g., stearic acid, magnesium stearate, polyethylene glycol, sodium lauryl sulfate), flow-aids (e.g., colloidal silicon dioxide), plasticizers (e.g., diethyl phthalate, triethyl citrate), emulsifiers (e.g., carbomer, hydroxypropyl cellulose, sodium lauryl sulfate), polymer coatings (e.g., poloxamers or poloxamines), coating and film forming agents (e.g., ethyl cellulose, acrylates, polymethacrylates) and/or adjuvants.

In one embodiment, the active compounds are prepared with carriers that will protect the compound against rapid elimination from the body, such as a controlled release formulation, including implants and microencapsulated delivery systems.
Biodegradable, biocompatible polymers can be used, such as ethylene vinyl acetate, polyanhydrides, polyglycolic acid, collagen, polyorthoesters, and polylactic acid. Methods for preparation of such formulations will be apparent to those skilled in the art. The materials can also be obtained commercially from Alza Corporation and Nova Pharmaceuticals, Inc. Liposomal suspensions (including liposomes targeted to infected cells with monoclonal antibodies to viral antigens) can also be used as pharmaceutically acceptable carriers. These can be prepared according to methods known to those skilled in the art, for example, as described in U.S.
Patent No.
4,522,811.
It is especially advantageous to formulate oral compositions in dosage unit form for ease of administration and uniformity of dosage. Dosage unit form as used herein refers to physically discrete units suited as unitary dosages for the subject to be treated; each unit containing a predetermined quantity of active compound calculated to produce the desired therapeutic effect in association with the required pharmaceutical carrier.
The specification for the dosage unit forms of the invention are dictated by and directly dependent on the unique characteristics of the active compound and the particular therapeutic effect to be achieved, and the limitations inherent in the art of compounding such an active compound for the treatment of individuals.
The pharmaceutical compositions can be included in a container, pack, or dispenser together with instructions for administration.
The compounds of the present invention may be administered intravenously on the first day of treatment, with oral administration on the second day and all consecutive days thereafter.
The compounds of the present invention may be administered for the purpose of preventing disease progression or stabilizing tumor growth.
The preparation of pharmaceutical compositions that contain an active component is well understood in the art, for example, by mixing, granulating, or tablet-forming processes.
The active therapeutic ingredient is often mixed with excipients that are pharmaceutically acceptable and compatible with the active ingredient. For oral administration, the active agents are mixed with additives customary for this purpose, such as vehicles, stabilizers, or inert diluents, and converted by customary methods into suitable forms for administration, such as tablets, coated tablets, hard or soft gelatin capsules, aqueous, alcoholic or oily solutions and the like as detailed above.
The amount of the compound administered to the patient is less than an amount that would cause unmanageable toxicity in the patient. In the certain embodiments, the amount of the compound that is administered to the patient is less than the amount that causes a concentration of the compound in the patient's plasma to equal or exceed the toxic level of the compound. In one embodiment, the concentration of the compound in the patient's plasma is maintained at about 10 nM. In another embodiment, the concentration of the compound in the patient's plasma is maintained at about 25 nM. In another embodiment, the concentration of the compound in the patient's plasma is maintained at about 50 nM. In another embodiment, the concentration of the compound in the patient's plasma is maintained at about 100 nM. In another embodiment, the concentration of the compound in the patient's plasma is maintained at about 500 nM. In another embodiment, the concentration of the compound in the patient's plasma is maintained at about 1000 nM. In another embodiment, the concentration of the compound in the patient's plasma is maintained at about 2500 nM. In another embodiment, the concentration of the compound in the patient's plasma is maintained at about 5000 nM. The optimal amount of the compound that should be administered to the patient in the practice of the present invention will depend on the particular compound used and the type of cancer being treated.
The instant invention also includes a pharmaceutical composition useful for treating or preventing cancer that comprises a therapeutically effective amount of a compound of Formula I and a second compound selected from: an estrogen receptor modulator, an androgen receptor modulator, a retinoid receptor modulator, a cytotoxic/cytostatic agent, an antiproliferative agent, a prenyl-protein transferase inhibitor, an HMG-CoA
reductase inhibitor, an HIV protease inhibitor, a reverse transcriptase inhibitor, an angiogenesis inhibitor, a PPAR-y agonist, a PPAR-S agonist, an inhibitor of cell proliferation and survival signaling, a bisphosphonate, an aromatase inhibitor, an siRNA therapeutic, ysecretase inhibitors, agents that interfere with receptor tyrosine kinases (RTKs) and an agent that interferes with a cell cycle checkpoint.

;0 In Vitro METHODS:
The present invention also provides methods of using the phosphorus derivatives of the present invention for inducing terminal differentiation, cell growth arrest and/or apoptosis of neoplastic cells thereby inhibiting the proliferation of such cells. The methods can be practiced in vivo or in vitro.
In one embodiment, the present invention provides in vitro methods for selectively inducing terminal differentiation, cell growth arrest and/or apoptosis of neoplastic cells, thereby inhibiting proliferation of such cells, by contacting the cells with an effective amount of any one or more of the phosphorus derivatives described herein.
In a particular embodiment, the present invention relates to an in vitro method of selectively inducing tenminal differentiation of neoplastic cells and thereby inhibiting proliferation of such cells. The method comprises contacting the cells under suitable conditions with an effective amount of one or more of the phosphorus compounds described herein.
In another embodiment, the invention relates to an in vitro method of selectively inducing cell growth arrest of neoplastic cells and thereby inhibiting proliferation of such cells.
The method comprises contacting the cells under suitable conditions with an effective amount of one or more of the phosphorus compounds described herein.
In another embodiment, the invention relates to an in vitro method of selectively inducing apoptosis of neoplastic cells and thereby inhibiting proliferation of such cells. The method comprises contacting the cells under suitable conditions with an effective amount of one or more of the phosphorus compounds described herein.
In another embodiment, the invention relates to an in vitro method of inducing terminal differentiation of tumor cells in a tumor comprising contacting the cells with an effective amount of any one or more of the phosphorus compounds described herein.
Although the methods of the present invention can be practiced in vitro, it is contemplated that the preferred embodiment for the methods of selectively inducing terminal differentiation, cell growth arrest and/or apoptosis of neoplastic cells, and of inhibiting HDAC
will comprise contacting the cells in vivo, i.e., by administering the compounds to a subject harboring neoplastic cells or tumor cells in need of treatment.
Thus, the present invention provides in vivo methods for selectively inducing terminal differentiation, cell growth arrest and/or apoptosis of neoplastic cells in a subject, thereby inhibiting proliferation of such cells in the subject, by administering to the subject an effective amount of any one or more of the phosphorus derivatives described herein.
In a particular embodiment, the present invention relates to a method of selectively inducing terminal differentiation of neoplastic cells and thereby inhibiting proliferation of such cells in a subject. The method comprises administering to the subject an effective amount of one or more of the phosphorus derivatives described herein.

In another embodiment, the invention relates to a method of selectively inducing cell growth arrest of neoplastic cells and thereby inhibiting proliferation of such cells in a subject. The method comprises administering to the subject an effective amount of one or more of the phosphorus derivatives described herein.
In another embodiment, the invention relates to a method of selectively inducing apoptosis of neoplastic cells and thereby inhibiting proliferation of such cells in a subject. The method comprises administering to the subject an effective amount of one or more of the phosphorus derivatives described herein.
In another embodiment, the invention relates to a method of treating a patient having a tumor characterized by proliferation of neoplastic cells. The method comprises administering to the patient one or more of the phosphorus derivatives described herein. The amount of compound is effective to selectively induce terminal differentiation, induce cell growth arrest and/or induce apoptosis of such neoplastic cells and thereby inhibit their proliferation.
The invention is illustrated in the examples in the Experimental Details Section that follows. This section is set forth to aid in an understanding of the invention but is not intended to, and should not be construed to limit in any way the invention as set forth in the claims which follow thereafter.

EXPERIMENTAL DETAILS SECTION
EXAMPLE I - SYNTHESIS

The compounds of the present invention were prepared by the general methods outlined in the synthetic schemes below, as exemplified below. In the following schemes, Ar may represent aryl or heteroaryl.

A/B. Preparation of Aryl Phosphonates/Phosphinates Schemes 1 and 2 illustrate the use of nickel-catalyzed coupling to make the aryl-phosphorus bond and subsequent transformation to pharmaceutically useful compounds.
Scheme 1 O NiBr2, R'R2POR O LiOH, THF -i ~ OMe OMe Br~-/ A ( ~\ MeOH, H20 P(O)RIR2 0 1) Diamine OH EDCI, HOBT, DMF
~ 2 2) TFA H.Ar.NHZ
P(O)R R
N P(O)R'R2 aq. NaOH 1fAN.ArNH, Dioxa ne P(O)R'OH
Scheme 2 NiBr2. RIP(OR)2 KOH, Dioxane OtBu e,"OtBu Br A

P(O)RIOR
O 1) RZOH O
OtBu BOP, DIPEA, DMF \
OH
P(O)RIOH 2) TFA
P(O)R'OR2 1) Diamine 0 Z
EDCI, DIPEA, DMF c)LN.Ar.NH
2) TFA
P(O)RIOR2 Scheme 3 illustrates the synthetic route to make the heteroaryl-phosphorus bond and subsequent transformation to pharmaceutically useful compounds.

Scheme 3 ~ OH AIBN, (TMS~SiH, ~ 1) Diamine ~
N' NHZ
~ R, I OH EDCI, DIPEA, DMF R H
Br N R'P(OR)2,A R(,P N RO~P N
u 2) TFA
o 11 C. Preparation of Aryl Phosphine Oxides Scheme 4 illustrates. the synthetic route used to access aryl phosphine oxides.
Scheme 4 H
02H (aq.)/DCM R:P P~ P 2 R~ CI I M9~Br R. C'X
. 2 R
R2 -78 C to RT R

KMO4 R-P / OH Diamine, EDC, O
~ ~ HOBT, DMF TFA R 0 / N-~
H20 R2 P ~ ) H NH2 Scheme 5 illustrates an alternative synthetic route to aryl phosphine oxides Scheme 5 OMe CI,O ~~ OMe ~MgBr P~ R7 NH2 , Water P'/
CI
F
OMe Ol s kF
Pj 1) BBr3 P 00 R7/N 2) Triflating agent R7N

1) Pd(Ac)2, DPPP, DIPEA, CO I P H'~'NH2 2) EDCI, HOBT, DIPEA, Diamine 3) 2:1 DCM:TFA R 7 .1 N

D/E. Preparation of Alkyl Phosphonates/Phosphinates Scheme 6 illustrates the use of an Arbuzov coupling to make the phosphorus carbon bond and subsequent transformations to pharmaceutically useful compounds.

Scheme 6 Br Diamine Br n R3 DIPEA, DCM
R4 Rs 0 \
Br, n ~/ H~ ~ NH R~R2POR , 0 R3 O~

Rs 0 s R O
R2 P R I\ H,Ar,NH TFA R e N-~NH2 n~ RZ-P n H
, R Rs O O R~ R3 1) aq. NaOH 1) aq. NaOH
2) RXH, BOP
3) TFA

R6 0 O Rs 0 N'~NH2 P R N.Ar,NH2 II i ~`~ n H HO'P H
R1 3 R' R
Scheme 7 illustrates an alternate synthetic route to access alkyl phosphonates or phosphinates with the Arbuzov coupling taking place earlier in the sequence, as well as, incorporating a-substitution.

Scheme 7 R6 R'RZPOR, Br ORa R TMG, Toluene O 1) Acid deprotection O R6 2) Diamine, EDC, HOBT, DMF
1I ORa RI' P OR
R2 R3 1) NaH, R5X
2) aq. LiOH
3) Diamine, EDC, HOBT, DMF

P 74 R H, Ar NH TFA ~. IPOI R~ H, Ar NH2 R n ~ ~ -~ R n R2 R3 Rs O O ~ R3 RS

1) aq. NaOH aq. NaOH
2) RXH, BOP
3) TFA

P N
, Ar NH2 O ~ Ar R)(-R2R R
7~ 5 n H HO,P n i / H~ NH2 C

Scheme 8 illustrates an alternative synthetic route to alkyl phosphonates with a-substitution.
Scheme 8 O Pd(~Bu3Ph O ~~ O< R ~ oH
~ + RvP.Oi~ K3~s R// TFA
Ol _O' ~
~o o=P
gr~ Toluene D,P 0 O
I ~ \

NAr ,Boc Ar. Diami-t~ RH ,H TFA-- R H NNz HOST, DMF O% ~~ O=PO

Scheme 9 illustrates an alternative synthetic route to phosphonates containing (3-substitution.

Scheme 9 0 0 R NaH
. Boc + R'~ O, -_,w R4 s N. Ar N
Br n H H O.R THF

s R' R4 s Ar, Boc TFA R' R4 N_~NHZ
` n~ H' H O` P~O n' H

R' ~ R R3 R.O R R

s H202, KZC03 00 R4 R H_ArNH2 DMSO ~ ~O n ~1, R3 'when R' = CN R R
Scheme 10 illustrates an alternative synthetic route to phosphonates and phosphinates derived from methyl 6-methylnicotinate.
Scheme 10 O O
NBS, Benzoyl R'RZPOR
I ~ OMe Peroxide C
OMe N CCI4, 0 Br N neat or Toluene 0 Diamine, HOBT
O I i OMe ~~OH R',P OH
R1-P N EDC, DMF

Rz NAr.
O N.Ar.N.Boc TFA H' NH2 i i I H H -- i P
Rl~ nj DCM R N

F/G. Preparation of a-F, -OH or -NRIR2 Substituted Alkyl Phosphonates/Phosphinates Scheme 11 illustrates synthetic route used to access a-F or -OH substituted alkyl phosphonates or phosphinates.

Scheme. l l Ra OR R'- P R2 PR1R2 ~ OR
I
TMG / DAST, - 10 C
O ~ OH

~ acid deprotection OPR~ RZ I~ O OMe O O
acid 1) Diamine, EDC, Ra F~ -deprotection PR~R_ 2 ~ OH HOBT, DMF
R 4 F(OH) 2) DCM : TFA

PR'RZ H'~NH2 R F(OH) Scheme 12 illustrates the synthetic route used to access alkyl phosphonates or phosphinates with an a-amino group.
Scheme 12 H OMe p'I..I
H~ ,_~ OMe 3 A mol. Sieves, N~ Ri I R2 DCM TMG

Nz~ OMe O
HN Pd/C, HZ PR~RZ OMe Acylations \ , ~ ---and/or H2N Alkylations O
PR'RZ I~ 0 PR'R2 OH
OMe ~R UOH
~
R~-N.RB / 1) NaH, R X R~_N, RRBa 2) LiOH

P1 R1 Rz N.ArNH2 1) Diamine, EDC, HOBT. DMF H
Ra 2) DCM : TFA R~-N`a H. Preparation of Alkyl Phosphine Oxides Scheme 13 illustrates the synthetic route used to access alkyl phosphine oxides.
Scheme 13 R4 Rs Br~ ~--cIIIIIJSOR RI R2PCI , 0 R4 R6 e OR
Rl -P~R3 n toluene, Hunig's Rs~ ' n base, MeOH R3 1) Acid deprotection 2) Diamine, EDC, HOBT, DMF 0 OR 5 R1-P ~ H. Ar.
NH
1) NaH, R X 2/
~An K Q,2) aq. LiOH R R3 R5 O
3) Diamine, EDC, HOBT, DMF

TFA O R4 R6 Ar.
R1-/ P i ~ H" NH2 R2 n /

1. Scheme 14 illustrates the synthesis of N-arylpyrazoles.
Scheme 14 H Ar N' % Cu(OAc)2, ArB(OH)2 N-N 1. KOH, THF/H20 Me0 pyridine, CH2CI2 M 2. DPPA, TEA, tBuOH, dioxane O NO2 O NO2 3. TFA/CH2CI2 Ar Ar N' N H2, PtO2, MeOH N- /
H N T~' (Boc)20 H2N
2 NO2 NHBoc J/K/L. Preparation of Spirocyclic Phosphonates, (3-Aminophosphine Oxides, and Phosphopiperidines Scheme 15 illustrates the synthetic route used to access phosphonate-containing spirocyclic amine intermediates.

Scheme 15 CO2Et Boc2O, Et3N CO2Et LDA; EtO2CCI
HN DMAP, CH2CI2 BocN THF
CO2Et UBH4 OH RP(O)CI2 BocNCO2Et THF/PhCH3 BocN OH Et3N, CH2CI2 O~P R 4 N HCI P~R
O --~ O
~N dioxane HCI - HN

Scheme 16 illustrates the synthetic routes used to access (3-aminophosphine oxide intermediates.
Scheme 16 ,0i -~MgBr CIR CI THF

R H2, Pd(OH)2 PR
O, BnNH2 P, ( R H20, A BnN J conc. HCI HCI HN J
~ MeOH
R -O~MgBr CI-'PICI 2) H202 BnNR'H 0 NR'Bn HZ. Pd(OH)2 0 NHR' ~ - P
A R R conc. HCI R~R = HCI
MeOH
R 1) MgBr R~P
R'P,CI 2) H2O2 R
PMB,N,Boc 1) CAN, H20, 0 NH2 0 MeCN P~ 2 NaH, THF R'Pv 2) HCI; R' iR HCI
R dioxane Scheme 17 illustrates the synthetic route used to access diethyl piperidin-4-ylphosphonate.

Scheme 17 0.~ H .0-/ O O
Br p ~~O,pO ~i0.Fy0 H2, Pd(OH)2 N H
Scheme 18 illustrates the synthetic routes used to access nicotinamide, benzyl amine, phenethyl amine, benzamide, and phenylacetamide derivatives of the amines prepared in Schemes 15-17.
Scheme 18 O 1) Diamine, py O
2) R7 R8NH=HCI, DIEA, DMSO " Ar, ~ CI 3) TFA/CH2CI2 I N NHZ
CI N R~RBN N H

Ra ~R6 / Ar_ 1) R7R8NH HCI, DIEA, DMF 4 R, Rs Ar N' NHBoc H NH2 B H 2) TFA/CHZCI2 R'-N n I
n Re O 1) R7R8NH=HCI, K2CO3, MeCN Rs 0 Ra Rs O~ 2) HCI/dioxane Ra e H' A~ NHZ
0 3) Diamine, EDC, HOBT, R'-N nBr n DIEA, DMF R8 4) TFA/CH2CI2 R4 Rs 1) Diamine, py O
CI 2) LiOH Rs a Ar, RO 3) R~R8NH=HCI, EDC R7 R ~ ~ H~ NH2 0 HOBT, DIEA, DMF N n~
4) TFA/CH2CI2 R8 0 O ~ CH2(CO2Me)2 0 I -1/ NaOH
O Pd(PIBu3)2 M~2C O/`
Br i K3PO4 MeOHlfHF
toluene, A MeO2C

1) R7 R8NH-HCI, EDC. HOBT, O ~ DIEA. DMF 0 2) TFA/CH2CI2 N~ NH

~ 3) Diamine, EDC, HOBT, N /
HO2C / DIEA, DMF /
4) TFA/CH2CI2 R8 O

M. Preparation of Alkyloxy Phosphonates/Phosphinates/Phosphates.

Scheme 19 illustrates the synthetic route to phosphonates, phosphinates or phosphates derived from alkyl alcohol.
Scheme 19 Ar, ,B
oc R4 Rs CI 1) Diamine, Pyr Ra Re,,, N" N
O 2) LiBH4, THF HOH H

1) R1R2P(O)OH, BOP, Rs Ar. ,Boc TFA, DCM
DIPEA, DMAP, DMF
R~ H' H

1) RIR2P(O)CI, 0 DIPEA. DCM

s Ra~ R---\ N' ~NH2 R .O, H

Scheme 20 illustrates an alternative synthetic route to phosphonates, phosphinates or phosphates derived from alkyl alcohols.
Scheme 20 O 1) R1R2P(O)OH, BOP, 0 DIPEA, DMAP, DMF Ra Rs OtBu ~~--- OtBu OR R' O
HO.~. 1) RIR2P(O)CI, R2-P~
DIPEA, DCM p TFA, DCM 1) Diamine, BOP, ' OH DIPEA, DMAP, DMF
2) TFA, DCM

Ra R~~ N. Ar NH2 R' % P.c/ H

O
Scheme 21 illustrates an alternative synthetic route to phosphonates, phosphinates or phosphates derived from alcohols.

Schem,e 21 O
0 Ra 1) Diamine, EDC, O ~ Ar HO OH HOBt, DMF P HNH2 R
~CD 2) R1 R2P(O)Ci' R/ 1' O n R2 Et3N, DCM
3) TFA

N. Preparation of Arylamino Phosphonamide/Phosphinamide/Phosphoramides.
Scheme 22 illustrates the synthesis of anilino phosphonates Scheme 22 0 1) P(O)Ci3 O O
H N \ O/ H_f 2 ~ 2) MeOH

1) LiOH, Dioxane ,O`O NAr1NH
Fi z 1) EDCI, HOBT, DIPEA, O~ ~NH
Diamine H
2) 2:1 DCM:TFA
Scheme 23 illustrates the synthesis of aniline phosphinates Scheme 23 O 1) Diamine, py 0 Cl 2) Pd/C. H2 0 ~ N' Ar. NH2 02N i 3) RIR2P(O)CI, Et3N R,,' ~
H
J
4) TFA R2 ,N ~
R2~p`O
Ri 0. Preparation of Alkylamino Phosphonamide/Phosphinamide/Phosphoramides.
Scheme 24 illustrates the synthetic route to phosphonamides, phosphinamides or phosphoramides derived from alkyl amine.

Scheme 24 o 0 Ra~~(R~ CI 1) Diamine, THF p R4 R/ HA~NHBoc ~ ~
CI n~ 2) Phthalmide, KI, K2C03 n O 1) RIR2P(O)OH, BOP, NH2NH2, EtOH R ~(~R-s -~ N"ArNHBoc DIPEA, DMF
Hz ~ In ~ I H OR
1) RIR2P(O)CI, DIPEA, DCM
TFA, DCM

R N' NH2 R' 0-~ ~s P. Preparation of Alkylamino Phosphorus containing Carbamates/Ureas.
Scheme 25 illustrates the synthetic route to phosphorus containing ureas/carbamates derived from alkyl amine.
Scheme 25 Rn Rs Cr 1) Diamine, THF NH2NH2, EtOH
2) Phthalmide. KI, KZCO3 N n\

R' O~~ ~/I H Ar NH2 O 1) CDI, DBU, THF ~O~H\ n W ~ H"ArNHBoc R
~~ ~OH ~~~
O_-P\ Z
R' Rz 2) TFA, OCM

1) DCM ~ O R4 ~~ I H"~, NH2 ~ R~N H
R-N=C=O Z _ H
Z
R ~ R ~
2) TFA, DCM

An example synthesis toward Fr N 1) TBSOTf, lutidine N
F;~-OH r~ 2) t-BuLi, THF, R, R2P(OK;1 (`
,Z li OH ` OH
\~ Br 3) AGC',I, MeOH RiP~

Z = aryl, heteroaryl, alkyl. cycloalkyl.

Scheme 26 illustrates an altemative synthetic route to phosphorus containing carbamates derived from alkyl amine.
Scheme 26 Ar. ,gac CI O'CI ~ N'Ar'N,B c PRR'2 H N I/ H' H DIPEA, CH2CI2 CIvOUN ~/ H H
2 'I

0 H N.ArN,Boc TFA O H N-Ar. NH2 R~P~O N I/ H H CH2CI2 RrP~O N
R I/ H
' 0 R' ~

R = Me, Et, OMe, OEt R' = OMe, OEt Q. Preparation of Phosphorus containing Amides.
Scheme 27 illustrates the synthetic route to phosphorus amides.
Scheme 27 vn 1) Diantine, py O
CI 2) LiOH Rs R6 O 0 ~ Ra N" Ar.
0 3) HOBT, EDC, DMF R1_p_ N o~ H

R1-F,'= Y-NHR5 0 4) TFA/CHZCI2 R. Preparation of Cyclic Phosphonates Scheme 28 illustrates the synthetic route used to prepare cyclic phosphonates Scheme 28 ~
0 ~ 0 MeO2C ~ 1) NaBH4, MeOH O O
O ;.. ~ p 2) RP(O)CI2, TEA, ~ MeOZC ~ CH2CIZ R 0 1) TFA/CHZCI2 0 2) Diamine, EDC, HOBT, DMF O O Ar, 3) TFA/CHZCIZ
\`R~P~ H' NH2 O

S. . Preparation of Keto Phosphinates and Cyclic Phosphinates Scheme 29 illustrates the synthetic route used to prepare keto phosphinates cyclic phosphinates Scheme 29 Br Br CI

O

~ C02H
Pd(OAc)2, dppp, DMF
P ~ /
H20, Hunig's base 0 O

Diamine, BOP 'P I/ H' NH
DMF, Huni 's base /\O ~~ O~O~

NaBH4, THF O I/ I{, A

\P O O~

H' ~ NH TFA, DCM ~ N" ~ NH2 - ~ H
O, P O~O~ 0 P /
O O p 0 N' a NH TFA, DCM ~ HH' NHZ

P O JC) ~
O=
T. Preparation of a,p-unsaturated benzamides Scheme 30 Illustrates the synthesis of a series of a,o-unsaturated benzamides.

Scheme 30 1.(ORI)2POH, Pd(PPh3)4, TEA
0 2. BOP, DIPEA, 0 R2OH 0 ~ ~ TFA
Br-' O or R-p '\ O
P(ORI)2R2 R2 / CH2CI2 Pd(PPh3)4, TEA

0 1. Amine, EDC, 0 O HOBT, DMF O "~
OH R n, \ M NH2 RR2 P 2. TFA, CHZCI2 1R P i / H

EXPERIlVIENTAL SECTION
The following examples further describe and demonstrate embodiments within the scope of the present invention. The examples are given solely for the purpose of illustration and are not to be construed as limitations of the present invention as many variations thereof are possible without departing from the spirit and scope of the invention.

Procedures for A. Preparation of Aryl Phosphonates.

s OXr EtO'NHZ
EtO0 Diethyl [4-({12-amino-5-(2-thienyl)phenyllamino}carbonyl)phenyl]phosphonate. A
mixture of 4-(diethoxyphosphoryl)benzoic acid (commercially available, 50 mg, 0.194 mmol), EDCI
(44.6 mg, 0.233 mmol), HOBT (31.5 mg, 0.233 mmol) and tert-butyl [2-amino-4-(2-thienyl)phenyl]carbamate (67.7 mg, 0.233 mmol) were taken into DMF (0.58 mL) and stirred for 16 h. Approximately 5 mL of TFA was added to the mixture which was stirred for l h and concentrated. The product was purified by HPLC (30-90% MeCN in H20 with 0.025%
TFA) to afford the requisite product. 'H NMR (DMSO-d6, 600MHz) S 9.87 (s, 1 H), 8.11 (dd, J= 7.9, 3.5 Hz, 2H), 7.83 (dd, J= 21.1, 8.2 Hz, 2H), 7.45 (d, J= 2.0 Hz, 1 H), 7.33 (dd, J= 5.0, 0.9 Hz, 1 H), 7.29 (dd, J= 8.2, 2.0 Hz, 1 H), 7.22 (d, J= 2.9 Hz, 1 H), 7.03 (dd, J= 5.0, 3.5 Hz, 1 H), 6.79 (d, J
= 8.5 Hz, 1H), 5.39 (s, 2H), 3.97-4.16 (m, 4H), 1.33 (t, J= 7.04 Hz, 6H). MS:
cal'd 431 (MH+), exp 431 (MH+).

S
O
~ N
EtO, I / H NH2 H~0 Ethyl hydrogen [4-({[2-amino-5-(2-thienyl)phenyl]amino) carbonyl)phenyl]phosphonate. A
suspension of diethyl [4-({[2-amino-5-(2-thienyl)phenyl]amino)carbonyl)phenyl]phosphonate (24.2 mg, 0.0562 mmol) (24.2 mg, 0.0562 mmol), dioxane (140 uL) and 5N aqueous NaOH (140 uL) was heated to 80 C (oil bath temperature) for lh. The reaction was quenched with TFA
(-140 uL) and concentrated. The residue was purified by HPLC (25-80% MeCN in H20 with 0.025% TFA) to afford the requisite product. 'H NMR (DMSO-d6, 600MHz) S 9.77 (s, 1H), 8.30 (t, J= 8.3 Hz, 2H), 7.69-7.64 (m, 2H), 7.48-7.45 (m, IH), 7.34-7.31 (m, IH), 7.26 (dd, J=
8.2, 2.0 Hz, 1 H), 7.22 (d, J= 2.6 Hz, 1 H), 7.02 (dd, J= 5.0, 3.5 Hz, 1 H), 6.79 (d, J= 8.5 Hz, 1H), 5.16 (s, 2H), 3.6-3.54 (m, 2H), 1.05 (t, J= 7.04 Hz, 3H). MS: cal'd 403 (1VIH+), exp 403 (MH+).

Additional analogs were prepared in procedures similar to those described for the preparations of the above examples.
Table 1. A; Aryl Phosphonates Salt Cpd# Name MS
forms S /
cal'd 431 Diethyl [4-({[2-amino-5-(2- TFA
1 O "t, I thienyl)phenyl]amino}carbon (MH+), exp salt N yl)phenyl]phosphonate 431 (MH+).
EtO, H NH2 EtOr P
s ~

Diethyl[4-({[2-amino-5-(3- cal'd 431 2 ~ ji, I thienyl)phenyl]amino}carbon (NII-[+), exp Free EtO ,I H NH yl)phenyl]phosphonate 431 (MH+) base z EtO"0 Diethyl (4- {[(4- cal'd 425 3 0 / I aminobiphenyl-3- (~~, exp Free H~ y1)amino]carbonyl}phenyi)ph 425 (MH+) base Eto~ NHz osphonate Eto 0 / S
Diethyl(4-{[(4-amino-l-* cal'd 415 TFA
o N-N phenyl-lH-pyrazol-3-4 e--- H4-/ yl)amino]carbonyl}phenyl)ph 4(+)~ exp salt EtQP NH2 osphonate (AR-) EtOr~

$ /
Ethyl hydrogen [4-({[2- cal'd 403 TFA
0 amino-5-(2-1~ H~ thienyl)phenyl]amino}carbon 4()(+~ salt yl)phenyl]phosphonate.
EtO,P / NH2 HO'0 0 N-N Ethyl hydrogen(4-{[(4- cal'd 387 11 amino-l-phenyl-lH-pyrazol- TFA
6 Eto, H NHZ 3-yl)amino]carbonyl} 387 exp salt Ho-o phenyl)phosphonate ~+) Procedures for B. Preparation of Aryl Phosphinates jJjfOMe Me0"~

Methyl 4-[methoxy(phenyl)phosphoryl]benzoate. From a related procedure (Helv.
Chim.
5 Acta, 2004, 87, 825) a mixture of inethyl4-bromobenzoate (676 mg, 3.14 mmol), anhydrous NiBr2 (34.3 mg, 0.157 mmol), and PhP(OMe)2 (0.500 mL, 3.14 mmol) was added to a pressure vessel and heated to 160 C (oil bath temperature) for 2h. The reaction was cooled, diluted with EtOAc and washed with water (3x), brine, dried (MgSO4) and concentrated to afford -800 mg of a clear, colorless oil that solidified upon standing. The product was purified by MPLC (15-50%
EtOAc in CH2CI2) to afford the requisite product: MS: cal'd 291 (MH+), exp 291 (MH+).

3cf0H
Me0"0 4-[Methoxy(phenyl)phosphoryllbenzoic acid. A solution of inethyl4-[methoxy(phenyl) phosphoryl]benzoate (202 mg, 0.696 mmol) was diluted in THF (2.78 mL) and MeOH
(0.696 mL) and treated with LiOH (0.696 mL, 3M solution in water, 2.09 mmol) and stirred for 2h. The reaction was quenched with 1N aqueous HCI and extracted with EtOAc 3x. The combined organic layers were washed with brine, dried (MgSO4) and concentrated to afford a clear, colorless oil that was used crude in the next step: MS: cal'd 277 (MH+), exp 277 (MH+).
O ~

O
Me,P I
HO'~
[4-(tert -Butoxycarbonyl)phenyl]methylphosphinic acid]. tert-Butyl 4-[ethoxy(methyl) phosphoryl]benzoate (510 mg, 1.79mmo1) was made 0.25 M in dioxane and to this stirring solution was added potassium hydroxide (5.38 mL, 5.38mmol). The resulting mixture was stirred at ambient temperature for 10 minutes. The reaction mixture was neutralized with 1 eq aq HCI then concentrated in vacuo. The residue was diluted with MeOH, the inorganic salts were filtered off and the filtrate was concentrated in vacuo. MS: cal'd 257 (MH+), exp 257 (MH+).
O
O
Me,P ( MeO"~
tert-Buty14-[methoxy(methyl)phosphorylibenzoate. 4-(tert -Butoxycarbonyl)phenyl]
methylphosphinic acid (500mg, 1.95 mmol) was made 0.25 M in DMF and to this stirring solution was added MeOH (100 mg, 2.93 mmol), BOP (1.0 g, 2.34 mmol), and DIPEA
(750 mg, 5.85 mmol). The resulting mixture was stirred at ambient temperature for 10 minutes then diluted with water and extracted with EtOAc. The organic layer was again washed with dilute aq HCl (2x), brine, then dried over anhydrous MgSO4 and concentrated in vacuo.
The residue was purified by MPLC (5-50%EtOAc:DCM), MS: cal'd 271 (1VIH+), exp 271 (IVIH+).
O
OH
\i0=p I N

6-[Ethoxy(methyl)phosphoryl]nicotinic acid. 6-Bromonicotinic acid (150 mg, 0.74 mmol) and diethyl methylphosphonite (1.21g, 8.91 mmol) were dissolved in toluene and the solution was purged with argon for several minutes. The mixture was brought to reflux and a solution of AIBN (40 mg, 0.22 mmol) and tris trimethylsilylsilane (220 mg, 0.89 mmol) in toluene was added dropwise over 4 hours via syringe pump. The initiator was added via syringe pump over 4 hours. The resulting mixture was reluxed for 16 hours then it was concentrated in vacuo and purified directly by MPLC (0-50% EtOAc:Hex). MS: cal'd 230 (MH+), exp 230 (MH+).

Additional analogs were prepared in procedures similar to those described for the preparations of the above examples.

Table 2. B; Aryl Phosphinates Cpd# R Name MS Salt forms i o Methyl [4-({[2-amino-5-(2- cal'd 449 \ NZLI, thienyl)phenyl]amino}carbon (MH), exp Free yl)phenyl]phenylphosphinate 449 (NII3+) base "''OOo s~
~
Methyl [4-({[2-amino-5-(3- cal'd 449 2 thienyl)phenyl]amino}carbon (MH+), exp Free ClJJLJ) ~ H H NF12 yl)phenyl]phenylphosphinate 449 (MH+) base aneo 0 Methyl (4- {[(4-3 A cal'd 443 ~ ~ aminobiphenyl-3-ol H yl)amino]carbonyl}phenyl)ph 4(~' exp baFree se N~ enylphosphinate (~~
nneo p s~
o ethyl[4-({[2-amino-5-(2- cal'd 401 Free 4 N I thienyl)phenyl]amino}carbon (NII~`), exp base P I H NF12 yl)phenyl]methylphosphinate 401 I

s ~
o ethyl [4-({[2-amino-5-(2- cal'd 463 5 thienyl)phenyl]amino} carbon (NIIi+), exp Free N Base H NH2 yl)phenyl]phenylphosphinate 463 (NIII~
EtO 0 ethyl (4-{[(4-aminobiphenyl- cal'd 394 6 O 3-yl)amino]carbonyl} (~+), exp Free H NH2 phenyl)methylphosphinate 395 (MH+) Base s",0.q DIA
p ~

S i O methyl[4-( {[2-amino-5-(2- cal'd 387 Free 7 I ~ thienyl)phenyl]amino}carbon (NIIi+) exp N ~0.~ ~ ~ H NH2 yl)phenyl]methylphosphinate 387 (IVII3~'=) Base P
~
s ~ 2-(ethylsulfonyl)ethyl [4-({[2-amino-5-(2- cal'd 493 Free (D H H thienyl)phenyl]amino}carbon 493 Base oo P 2 yl)phenyl]methylphosphinate s ~ 3-hydroxy-3-methylbutyl [4-o ~ ({[2-amino-5-(2- cal'd 459 Free 9 ~+), exp Ho o_ ~ i H NHZ thienyl)phenyl]amino)carbon 459 (MH~ Base ~ P yl)phenyl]methylphosphinate s~
cyclobutyl [4-({[2-amino-5- cal'd 427 0 ~~ (2-thienyl)phenyl]amino} exp Free O ~~ H carbonyl)phenyl]methyl 42 Base O. P NH2 phosphinate I
V

O S
I!::: ethyl [4-({[2-amino-5-(2- cal'd 415 11 ~O 0 ~, H NHZ thienyl)phenyl]amino}carbon (NIII+), exp Free J yl)phenyl]ethylphosphinate 415 (MH}) S i ethyl [5-({[2-amino-5-(2- cal'd 402 12 O ~ thienyl)phenyl]amino}carbon exp Free N YI)P3'ndin-2- (~~' Base 0. I H NH2 yl]methylphosphinate 402 (MH+) P N
~

Procedures for C. Preparation of Aryl Phosphine Oxides.

,/ ~ ~
P ~
A
5 Diisopropyl-p-tolyl-phosphane. To a solution of diisopropylchlorophosphine (2 mL, 12.57 mmol) in THF (25 mL) at -78 C was added 4-tolylmagnesium bromide (12.57 mL, 12.57 mmol) dropwise. After I h at -78 C, the reaction mixture was let warm to RT. The solvent was removed and material was used without further purification. MS: cal'd 209 .(MH+), exp 209 (MH+).

PO
1-(Diisopropyl-phosphinoyl)-4-methyl-benzene. To a solution of diisopropyl-p-tolyl-phosphane (2.6 g, 12.48 mmol) in DCM (5 mL) at 0 C was added hydrogen peroxide (4.08 mL, 13.31 mmol) dropwise. The reaction mixture was allowed to warm to RT. The reaction-was diluted with DCM, washed with water, brine, dried (MgSOa), filtered and the solvent was evaporated under reduced pressure. The material was used without further purification. MS:
cal'd 225 (MH+), exp 225 (MH+).

~ I OH
~PO
4-(Diisopropyl-phosphinoyl)-benzoic acid. To a solution of 1-(diisopropyl-phosphinoyl)-4-methyl-benzene (2.8 g, 12.48 mmol) in water (21 mL) at 80 C was added a solution of potassium permanganate (4.74 g, 30.0 mmol) in water (125 mL) slowly and carefully over 1 h.
The resultant solution was stirred at 100 C for 18 h. The brown slurry was filtered hot via a small plug of Celite. The filtrate was washed with ether, acidifed with 1 N
HCl and extracted with CHC13/MeOH. The CHC13/MeOH fractions were dried (MgSOa), filtered and the solvent was evaporated under reduced pressure. The material was used without further purification. MS:
cal'd 432 (MH+), exp 432 (MH+).

s)( I
~
I i H NNUO
O IOI
{2-14-(Diisopropyl-phosphinoyl)-benzoylamino}-4-thiophen-2-yl-phenyl}-carbamic acid tert-butyl ester. To a solution of 4-(diisopropyl-phosphinoyl)-benzoic acid (700 mg, 2.75 mmol), 2-amino-4-thiophen-2-yl-phenyl)-carbamic acid tert-butyl ester (959 mg, 3.30 mmol), and HOBT (558 mg, 4.13 nunol) in DMF (5 mL) was addded EDC (792 mg, 4.13 mmol). The reaction mixture was stirred at RT for 4h. The resultant solid was filtered and washed with MeOH to yield the desired material. 'H NMR (CDC13i 600MHz) S 10.02 (s, 1H), 8.75 (br s, 1 H), 8.08 (m, 2H), 7.83 (m, 2H), 7.77 (s, 1 H), 7.62 (d, J= 8.2 Hz, 1 H), 7.51 (m, 2H), 7.42 (d, J

.= 3.0 Hz, IH), 7.21 (dd, J. = 8.2, 2.5 Hz, 1 H), 2.39 (m, 2H), 1.06 (dd, J=
15.0,. 7.0 Hz, 6H), 0.90 (dd, J= 16.0 7.0 Hz, 6H). MS: cal'd 527 (MH+), exp 527 (MH+).

e a,": OM
//~O J

(4-Methoxyphenyl)(divinyl)phosphine oxide. (4-Methoxyphenyl)phosphonic dichloride (2.00 g, 8.89 mmol) was made 0.1 M in 1:1 THF:ether and stirred at - 78 C. To this stirring solution vinyl magnesium bromide (17.8 mL, 17.78 mmol, 1M in THF) was added dropwise.
The mixture was stirred for 1 h, then quenched with 2M aq. HCl and extracted with DCM (3x). The combined organic extracts were washed with brine, dried (MgSOa) and concentrated to afford the requisite product. MS: cal'd 209 (MH+), exp 209 (MH+) OMe ~ I /

/NI/
4-(4-Methoxyphenyl)-1-methyl-1,4-azaphosphinane 4-oxide. (4-Methoxyphenyl)(divinyl) phosphine oxide (1.22 g, 5.88 mmol) and methylamine (0.53 mL, 6.18 mmol, 40%
in water) was heated to 90 C for 2h. The reaction mixture was cooled to ambient temperature then extracted with DCM (3x). The combined organic extracts were dried (MgSO4) then concentrated in vacuo to afford the requisite product. MS: cal'd 240 (MH+), exp 240 (MH+) H
R I /

NJ

4-(1-Methyl-4-oxido-1,4-azaphosphinan-4-yl)phenol. 4-(4-Methoxyphenyl)-1-methyl-1,4-azaphosphinane 4-oxide (1.05 g, 4.39 mmol) was made 0.16 M in DCM and stirred at -78 C.
To this stirring solution was added BBr3 (2.09 g, 8.34 mmol) dropwise. The reaction mixture was slowly warmed to ambient temperature over 16 h. The precipitate was filtered off then dissolved in water. The pH was adjusted to pH=7 with 2N aq HC1. A precipitate was filtered off and the filtrate was concentrated in vacuo. The residue was suspended in 4:1 DCM:MeOH and stirred for 20 mins. The solids were filtered off and the filtrate was concentrated in vacuo to afford the requisite product. MS: cal'd 226 (MH+), exp 226 (MH+) F
F
0.

^ R O
F

4-(1-Methyl-4-oxido-1,4-azaphosphinan-4-yl)phenyl trifluoromethanesulfou ate.
4-(1-Methyl-4-oxido-1,4-azaphosphinan-4-yl)phenol (0.50 g, 2.22 mmol) was made 0.5 M in DMF
and N-Phenyl-bis(trifluorometanesulfonamide (1.19 g, 3.33 mmol) was added, followed by TEA
(0.62 mL, 4.44 mmol). The mixture was stirred at ambient temperature for 16 h then the precipitate was filtered off and the filtrate was concentrated in vacuo. The residue was purified by HPLC (20-95% MeCN in water w/0.025% TFA). Pure fractions were identified, combined and concentrated in vacuo. The residue was taken up in EtOAc and washed with saturated aqueous sodium bicarbonate (lx) then dried (MgSO4) and concentrated in vacuo to afford the requisite product as a freebase. MS: cal'd 358 (MH+), exp 358 (MH

I ~ oH
p /

/NJ
4-(1-Methyl-4-oxido-1,4-azaphosphinan-4-yl)benzoic acid. 4-(1-Methyl-4-oxido-1,4-azaphosphinan-4-yl)phenyl trifluoromethanesulfonate (0.18 g, 0.50 mmol) was made 0.25 M in 4:1 DMF:water and to this stirring solution was added palladium acetate (7 mg, 0.03 mmol), and DPPP (25 mg, 0.06 mmol). The resulting mixture was thoroughly degassed with bubbling carbon monoxide for 20 mins. DIPEA (130 mg, 1.01 mmol) was added and a CO
balloon was attached. The resulting mixture was stirred at 70 C for 16 h. The mixture was then cooled to ambient temperature and carried onto the subsequent reaction without purification. MS: cal'd 254 (MH+), exp 254 (MH+).

z "
N- [2-A mino-5-(2-th ienyl)ph en yl]-4-[(1-methyl-4-oxido-l,4-azaph osph in an-yI)methyl]benzamide. 4-(1-Methyl-4-oxido-1,4-azaphosphinan-4-yl)benzoic acid (128 mg, 0.51 mmol), 2-amino-4-thiophen-2-yl-phenyl)-carbamic acid tert-butyl ester (176 mg, 0.61 mmol), EDC (116 mg, 0.61 mmol), HOBT (93 mg, 0.61 mmol), and DIPEA (196 mg, 1.52 mmol) were combined and diluted with DMF (2.0 mL). The resulting mixture was stirred at ambient temperature for 18 hours. The reaction mixture was diluted with water and extracted with EtOAc (2x). The combined organic layers were washed again with water (2x) then dried (MgSO4) and concentrated in vacuo. The residue was purified by MPLC (0-8% MeOH
in CH2C12). Pure fractions were identified, combined, then concentrated in vacuo.
The residue was diluted with 2:1 DCM:TFA and stirred at ambient temperature for 1 h. The mixture was then carefully quenched with sat aq sodium bicarbonate and extracted with EtOAc.
The organic layer was dried (MgSO4) and concentrated in vacuo to afford the title compound: MS:
cal'd 426 (MH+), exp 426 (MH+). 'H NMR (CD3OD-d4i 600MHz) S 8.18 (d, J=6.2 Hz, 2H), 7.98 (dd, J
= 11.2 Hz, J= 8.2 Hz, 2H), 7.50 (d, J= 1.8 Hz, IH), 7.37 (dd, J=8.2 Hz, J= 1.8 Hz, 1H), 7.22 (dd, J= 12.6 Hz, J= 5.0 Hz, 2H), 7.01 (m , 1 H), 6.91 (d, J=8.2 Hz, 1 H), 3.06-2.96 (m, 211), 2.92-2.82 (m, 2H), 2.46-2.36 (m, 5H), 2.17-2.07 (m, 2H).
Additional analogs were prepared in procedures similar to-those described for the preparations of the above examples.
Table 3. C; Aryl Phosphine Oxides Cpd# Structure Name MS Salt Forms s X N-(2-Amino-5-thiophen-2- cal'd 427 1 0 I yl-phenyl)-4-(diisopropyl- (MH+), exp Free H phosphinoyl)-benzamide 427 base ~PO

S
N-[2-Amino-5-(2-0 thienyl)phenyl]-4-[(1- cal'd 426 2 N methyl-4-oxido-1,4- (MH+), exp baFree se ~ c H NH azaphosphinan-4- 426 P 2 yl)methyl]benzamide /NJ

s ~
o N-(2-Amino-5-thiophen-2- cal'd 371 Free 3 I yl-phenyl)-4-(dimethyl- (MH+) exp base H phosphinoyl)-benzamide 371 ~ / NH2 _~\\
O

o N-(2-Amino-5-phen-2-yl- cal'd 365 4 N~ phenyl)-4-(dimethyl- (MH+)' exp baFree se H NHz phosphinoyl)-benzamide 365 ~ P\

Procedures for D. Prenaration of Alk ly Phosphonates I N

O
[2-(4-Bromomethyl-benzoylamino)-4-thiophen-2-yl-phenyl]-carbamic acid tert-butyl ester.
4-Bromomethyl-benzoyl bromide (0.70 g, 2.52 mmol) was made 0.21 M in anhydrous DCM and cooled to -78 C. To this stirring solution was added (2-amino-4-thiophen-2-yl-phenyl)-carbamic acid tert-butyl ester (0.73 g, 2.52 mmol) followed by DIPEA (0.98 g, 7.56 mmol). The resulting solution was warmed to ambient temperature and stirred for 18 hours. The reaction mixture was then diluted with 0.1 N HCI and extracted with EtOAc. The organic layer was then washed with saturated aqueous sodium bicarbonate, brine, dried (MgSO4), and concentrated in vacuo to afford the title compound: 'H NMR (DMSO-d6, 600MHz) S 9.90 (s, 1H), 8.72 (s, 1H), 7.94 (d, J= 7.8.
Hz, 2H), 7.78-7.80 (m, IH), 7.57-7.62 (m, 3H), 7.47-7.51 (m, 2H), 7.42-7.44 (m, 1H), 7.09-7.12 (m, 1 H), 4.77 (s, 2H), 1.43 (s, 9H).

Me0. I NH=
Meo, [4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-phosphonic acid dimethyl ester.
[2-(4-Bromomethyl-benzoylamino)-4-thiophen-2-yl-phenyl]-carbamic acid tert-butyl ester (0.20 g, 0.41 mmol) was made 2.0 M in anhydrous toluene and to this stirring solution was added trimethylphosphite (0.06 g, 0.45 mmol). The resulting reaction mixture was sealed and stirred at 100 C for 18h. The reaction mixture was diluted with EtOAc and washed with saturated aqueous sodium bicarbonate. The organic layer was further washed with brine then dried (MgSO4) and concentrated in vacuo. The residue was dissolved in DMF:MeOH and purified by HPLC (45-95% MeCN in water w/0.025% TFA). Pure fractions were identified, combined, and concentrated in vacuo. The residue was dissolved in 2:1 DCM:TFA and stirred at ambient temperature. After 1 hour the mixture was concentrated in vacuo, diluted with EtOAc, washed with saturated aqueous sodium bicarbonate, brine, dried (MgSO4), then concentrated in vacuo to give the title compound: 'H NMR (DMSO-d6, 600MHz) S 9.68 (s, 1H), 7.92 (d, J=
8.4 Hz, 2H), 7.45 (s, 1 H), 7.37-7.41 (m, 2H), 7.32-7.34 (m, 1H), 7.26-7.29 (m, 1 H), 7.21-7.23 (m, 1H), 7.01-7.04 (m, IH), 6.78 (d, J= 8.4 Hz, 2H), 5.14 (s, 2H), 3.60 (d, J=11.4 Hz, 6H), 3.37 (d, J=22.2 Hz, 2H). MS: cal'd 417 (MH+), exp 417 (MH+) s O
/ ~
H
M~ ~ NHz Hor [4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-phosphonic acid monomethyl ester. [4-(2-Arnino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-phosphonic acid dimethyl ester (35 mg, 0.066 mmol) was made 0.25 M in dioxane and to this stirring solution was added 5N
aqueous sodium hydroxide (26 L, 0.132 mmol). The resulting solution was stirred at 80 C
overnight then diluted with DMF, acidified with TFA, and purified by HPLC (0-60% MeCN in water w/0.025% TFA) to afford the title compound: 'H NMR (DMSO-d6, 600MHz) S
9.80 (s, 1 H), 7.91 (d, J= 8.4 Hz, 2H), 7.48-7.50 (m, 1 H), 7.31-7.42 (m, 4H), 7.26-7.28 (m, 1H), 7.04-7.06 (m, 1 H), 6.88 (d, J= 8.4 Hz, 1 H), 3.52 (d, J=11.4 Hz, 3H), 3.18 (d, J=21.6 Hz, 2H). MS:
cal'd 403 (MH+), exp 403 (MH+) 0.~ I OMe >C I
O

4-(5,5-Dimethyl-2-oxo-2X5-[1,3,2]dioxaphosphinan-2-ylmethyl)-benzoic acid methyl ester.
4-Bromomethyl-benzoic acid methyl ester (0.50 g, 2.18 mmol) was made 2.0 M in anhydrous toluene and to this mixture was added 5,5-dimethyl-[1,3,2]dioxaphosphinane 2-oxide (0.66 g, 4.37 mmol) followed by N,N,N,N'-tetramethyl-guanidine (0.25 g, 2.18 mmol). The mixture was stirred at ambient temperature for 18 hours. The reaction mixture was then diluted with IN aq HCl and extracted with EtOAc. The organic layer was again washed with I N
aqueous HCI, brine, dried (MgSO4) then concentrated in vacuo. The residue was purified by MPLC (0-70%
EtOAc in CHZCIZ) to afford the title compound: MS: cal'd 299 (MH+), exp 299 (MH+) 0.~fJ I ~ OH

4-(5,5-Dimethyl-2-oxo-2X5-[1,3,2]dioxaphosphinan-2-ylmethyl)-benzoic acid. 4-(5,5-Dimethyl-2-oxo-2;L5-[1,3,2]dioxaphosphinan-2-ylmethyl)-benzoic acid methyl ester (0.23 g, 0.75 mmol) was made 0.25 M in dioxane and to this stirring solution was added 3 N aq LiOH

(0.05 g, 2.26 mmol). The resulting mixture was stirred at ambient temperature for 4 hours. The reaction mixture was concentrated in vacuo and carried directly onto subsequent coupling without further purification: MS: cal'd 285 (MH+), exp 285 (MH+).

o /0.~ I M
d NFh I V~N
\~r\/ O

N-(2-Amino-5-th iophen-2-yl-phenyl)-4-(5,5-dimethyl-2-oxo-2X5-[1,3,2]dioxaphosphinan-2-ylmethyl)-benzamide. 4-(5,5-Dimethyl-2-oxo-2X5-[ 1,3,2]dioxaphosphinan-2-ylmethyl)-benzoic acid (100 mg, 0.35 mmol), (2-amino-4-thiophen-2-yl-phenyl)-carbamic acid tert-butyl ester (123 mg, 0.42 mmol), EDC (81 mg, 0.42 mmol), HOBT (54 mg, 0.35 mmol), and DIPEA.
(136 mg, 1.05 mmol) were combined and diluted with DMF (1.4 mL). The resulting mixture was stirred at ambient temperature for 18 hours. The reaction mixture was purified directly by HPLC (20-85% MeCN in water w/0.025% TFA). Pure fractions were identified, combined and concentrated in vacuo. The residue was diluted with 10:1 DCM:TFA and stirred at ambient temperature for 2 hours. The mixture was then concentrated in vacuo to afford the title compound: 'H NMR (DMSO-d6, 600MHz) S 9.85 (s, 1H), 7.93 (d, J= 7.2 Hz, 2H), 7.50 (s, 1H), 7.43 (d, J=7.2 Hz, 2H), 7.34-7.40 (m, 2H), 7.28-7.30 (m, 1H), 7.03-7.06 (m, 1H), 6.90-6.92 (m, 1H), 4.20-4.25 (m, 2H), 4.01 (br-s, 2H), 3.87-3.94 (m, 2H), 3.52 (d, J=20.4 Hz, 2H), 1.08 (s, 3H), 0.84 (s, 3H). MS: cal'd 457 (MH+), exp 457 (MH+).

Preparation of a-Substituted Alkyl Phosphonates.

\ O O/ I\
N
I
/
O'"-O

Tert-butyl 4-[cyano(diethoxyphosphoryl)methyl]benzoate. Diethyl cyanomethylphosphonate (0.35 ml, 2.164 mmol), tert-butyl 4-bromobenzoate (0.5096 g, 1.982 mmol), bis(tri-t-butylphosphine)palladium (0.051 g, 0.099 mmol), potassium phosphate, tribasic (1.2381 g, 5.83 mmol) and toluene (6 ml) were combined in a flask. Nitrogen was bubbled through the reaction for approximately two minutes to deoxygenate the reaction. The reaction was allowed to heat at 100 C until complete (3-24 h). The reaction was filtered over celite. The resulting material was partially purified by column chromatography on silica gel. The partially purified material was further purified by HPLC. 'H NMR (CDC13, 600 MHz) S 8.01 (d, J= 6 Hz, 2H), 7.52 (d, J= 6.9 Hz, 2H), 4.30 (d, JP-H = 26.4 Hz, 1H), 4.19-4.01 (m, 4H), 1.59 (s, 9H), 1.32 (m, 3H), 1.26 (m, 3H). MS: cal'd 354 (Ml-I+), exp 354 (MH+).

Preparation of R-Substituted Alkyl Phosphonates.

s N I

II ~ N
O, I/ H HN O

Diethyl {2-[4-({[2-[(tert-butoxycarbonyl)amino]-5-(2-thienyl)phenyl]amino}carbonyl) phenyl]-1-cyanoethyl}phosphonate. Diethyl cyanomethylphosphonate (0.19 ml, 1.175 mmol) was dissolved in THF (7 ml). The solution was cooled to 0 C. Sodium hydride (0.0818 g, 2.045 mmol) was added to the reaction. The reaction was allowed to stir for several minutes. Tert-butyl [2-{[4-(bromomethyl)benzoyl]amino}-4-(2-thienyl)phenyl]carbamate (0.5047 g, 1.035 mmol) was added in a solution of THF. The reaction was allowed to slowly warm to room temperature and stir overnight. The reaction was diluted with ethyl acetate and quenched with saturated aqueous ammonium chloride. The aqueous layer was extracted with ethyl acetate three times. The combined organic layer was dried over sodium sulfate, filtered, and concentrated.
The resulting residue was partially purified by column chromatography on silica gel. MS: cal'd 484 (MH+-Boc), exp 484 (MH+-Boc).

~ s o O NH ~ N ~ I

Diethyl {2-amino-1-(4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]-2-oxoethyl}phosphate. Diethyl {2-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]-1-cyanoethyl}phosphonate (0.1333 g, 0.276 mmol) was dissolved in DMSO (3 ml).
Potassium carbonate (0.2088 g, 1.511 mmol) and hydrogen peroxide (0.25 ml, 2.86 mmol) were added.

The reaction was allowed to stir approximately three hours at 70 C. The reaction was cooled to room temperature and filtered. The filtrate was concentrated and purified by HPLC. 'H NMR
(DMSO-d6i 600MHz) S 9.6 (s, IH), 7.89 (d, J= 8.4 Hz, 1 H), 7.44 (d, J= 1.8 Hz, 1 H), 7.37 (d, J
= 2.4 Hz, 1 H), 7.33 (d,d, J= 4.8 Hz, 1.2 Hz, 1 H), 7.30 (d, J= 7.8 Hz, 2H), 7.27 (d,d, J= 8.4 Hz, 1.8 Hz, 1 H), 7.21 (d,d, J= 3.6 Hz, 1.2 Hz, 1 H), 7.02 (m, 2H), 6.78 (d, J=
8.4 Hz, 1 H), 5.12 (s, 2H), 4.03 (m, 4H), 3.29-3.16 (m, 2H), 2.94 (m, 1H), 1.24 (m, 6H). MS: cal'd 502 (MH+), exp 502 (MH+).

Addition4l analogs were prepared in procedures similar to those described for the preparations of the above examples.
Table 4. D; Alkyl Phosphonates C~pd Structure Name MS FoSalt rms s o [4-(2-Amino-5-thiophen- cal'd 417 1 2-yl-phenylcarbamoyl)- TFA
+)' exp Salt o~ N benzyl]-phosphonic acid ~
H H2N dimethyl ester 417 (MH+) s o [4-(2-Amino-5-thiophen- , 2-yl-phenylcarbamoyl)- cal d 445 TFA
2 ~_, ~ ~ H benzyl]-phosphonic acid 4(~+( )~+~ Salt 0 H2N diethyl ester ~
S ~
o [4-(2-Amino-5-thiophen- , 3 \ 2-yl-phenylcarbamoyl)- cal d 40X TFA
o ~ H benzyl]-phosphonic acid (~( )~ ~ Salt HO / HZN monomethyl ester 403 +

s [4-(2-Amino-5-thiophen- , 2-yl-phenylcarbamoyl)- ca d 417 TFA
4 0_0 H benzyl]-phosphonic acid 4(+( )x+~ Salt Ha HhN monoethyl ester [4-(4-Amino-l-phenyl-o N-N 1H-pyrazol-3- cal'd 429 TFA
0 N~ ylcarbamoyl)-benzyl]- (Ml-I+), exp o~P~ " phosphonic acid diethyl 429 (MH+) Salt o H2N ester s ~I
o [4-(2-Amino-5-thiophen- cal'd 445 6 o ~ N 3-yl-phenylcarbamoyl)- ~+)ex TFA
o,P ~ ~ " "2N benzyl]-phosphonic acid ~5 ( ~+~ Salt ~ diethyl ester s i o [4-(2-Amino-5-thiophen- cal'd 445 2-yl-phenylcarbamoyl)- Free 7 0 H ~ benzyl]-phosphonic acid (~+)' exp base o ~/ NH2 diethyl ester 445 (M]H+) s N-[2-amino-5-(2-0 i thienyl)phenyl]-4-[(5,5- cal'd 457 TFA
8 N~ ~ dimethyl-2-oxido-1,3,2- (MH+), exp Salt dioxaphosphinan-2- 457 (MH+) o yl)methyl] benzamide S C', Diisopropyl [4-( {[2- cal'd 473 O amino-5-(2-thienyl) Free 9 ~ O H phenyl]amino}carbonyl)b 4(+( )+~ base O-P NH2 enzyl]phosphonate O

S /
Diethyl [3-({[2-amino-5- cal'd 445 0 (2-thienyl)phenyl] + Free /-O amino}carbonyl)benzyl]p exp base --,/O'P N hosphonate 445 (MH+) S /
methyl tetrahydro-2H-O pyran-4-ylmethyl[4-({[2- cal'd 501 11 ~ O H amino-5-(2-thienyl) (1~-I+), exp baFree se p'~ NH2 phenyl]amino}carbonyl)b 501 (MH+) enzyl]phosphonate O

S ~ methyl P -[4-( { [2-amino-5-(2 cal'd 485 H3C 0 thienyl)phenyl]amino}car Free 12 S op N bonyl)benzyl]-N -1,3- 4(+)' exp thiazo 1-2- ~) N H H NH ylphosphonamidoate S i O ~ ethyl { [ [4-( { [2-amino-5-0 \ I ~ (2-thienyl)phenyl] cal'd 489 Free 13 0_a H NH amino}carbonyl)benzyl]( (MH+), exp base O 2 methoxy)phosphoryl] 489 (MH+) O-C oxy} acetate O

diethyl (4- { [(4-cal'd 439 14 0 atninobiphenyl-3-yl) +)ex Free amino]carbonyl}benzyl) 439 ~+~ base 0 ~õ NH2 phosphonate S i O methyl pyridin-3-ylmethyl[4-({[2-amino-5- cal'd 494 Free 15 H NH (2-thienyl)phenyl] (~+), exp base O 2 amino}carbonyl)benzyl] 494 (MH+) phosphonate N

S i 0 Methyl P-[4-({[2-amino-I 10-:~ 5-(2-thienyl)phenyl] cal'd 492 Free 16 \O O H amino}carbonyl)benzyl]- (MH+), exp HN" ~ NH2 N-benzyl 492 (MH+) base phosphonamidoate . . g . .
O Methyl P-[4-({[2-amino-` \ 5-(2-thienyl)phenyl] cal'd 493 Free 17 O'~ H H2 amino}carbonyl)benzyl]- (11g1+), exp base HN" N-(pyridin-3-ylmethyl) 493 (MH+) I ~ phosphonamidoate N

S i O ~ dibenzyl[4-(([2-amino-5- , ~ (2-thienyl)pheny]] cal d 569 Free 18 ~: H H2 ~ino) carbonyl)benzyl] 569 base phosphonate S
2-amino-2-oxoethyl 0 methyl[4-({[2-amino-5- cal'd 460 19 QO ~~ H (2-thienyl)phenyl] (MH+), exp baFree se ~~ H2 amino}carbonyl)benzyl] 460 (MH+) H2N-1~ phosphonate S
2-amino-2-methylpropyl O methyl[4-({[2-amino-5- cat'd 474 20 ~' (MH+), exp O N (2-thienyl)phenyl] P base ~.F~ ~ r H NH2 amino}carbonyl)benzyl] 474 (MH+) H2N~ phosphonate s i O 3-hydroxy-3-methylbutyl methyl[4-({[2-amino-5- cal'd 489 Free 21 ~ H (2-thienyl)phenyl] (MH+), exp O' NH2 amino}carbonyl)benzyl] 489 (MH+) base phosphonate HO

~ s .
Tetraethyl { [4-( { [2-I amino-5-(2-thienyl ) cal'd 581 22 o- rlh;zt ~ H phenyl] amino}carbonyl) (MH+), exp baFree se o-P / NHZ phenyl]methylene}bis 581 (MH+) o,P (phosphonate) ~
~ s Diethyl [[4-({[2-amino-5- cal'd o / (2-thienyl)phenyl]
23 470(MH+), Free o N arnino} carbonyl)phenyl]
~o H (cyano)methyl] exp 470 base ,P' NH2 (MH+) phosphonate N
s Methyl [4-({[2-amino-5- cal'd 24 ~~ o (2-thienyl)phenyl] amino) 503(MH+), Free o N carbonyl)phenyl] P'O H NH2 (diethoxyphosphoryl) exp 503 base acetate (MI-I ) I

S Methyl3-[4-({[2-amino-5-(2-thienyl)phenyl] cal'd 489 25 o / ~ amino}carbonyl)phenyl]- (MH+), exp Free 0 0 ~ N~ 2-(dimethoxyphosphoryl) 489 (MH+) base o, ~ / H NHZ propanoate P

s Diethyl {2-[4-({[2-amino-o 5-(2-thienyl)phenyl] cal'd 484 Free 26 N N~ ~ amino}carbonyl)phenyl] (MH+), exp base H NH2 -1-cyanoethyl} 484 (MH+) ?~0 phosphonate 1o 1 ~ s I Tetraethyl {2-[4-({[2-o / ( amino-5-(2- cal'd 595 yl)phenyl]amino}car (MH+) eXp Free z N thien `te 27 o~P` H HZ bonyl)phenyl]ethane-1,1- 595 (1VIIi+) base o diyl}bis(phosphonate) s Diethyl {2-amino-l-[4-0 ({[2-amino-5-(2- cal'd 502 Free 28 0 NH N thienyl)phenyl]amino}car (MH+), exp o,. \ H NH2 bonyl)benzyl]-2- 502 (1VII-~+) base o 0 oxoethyl}phosphonate L"
Procedures for E. Preparation of Alk ly Phosphinates 0 \ ~
-P

4-(Ethoxy-methyl-phosphinoylmethyl)-benzoic acid methyl ester. A neat solution of 4-bromomethyl-benzoic acid methyl ester (1.80 g, 7.86 mmol) and methyldiethoxyphosphine (1.07 g, 7.86 mmol) were heated in a sealed tube to 100 C for lh. The solution was purified by column chromatography on silica gel, eluting with EtOAc/MeOH to give a colorless solid. 'H
NMR (CDC13, 600MHz) S 7.98 (d, J= 8.2 Hz, 2H), 7.33 (dd, J= 8.2, 2.0 Hz, 2H), 4.08-3.96 (m, 2H), 3.90 (s, 3H), 3.19 (d, J= 17.6 Hz, 2H), 1.37 (d, J= 14.1 Hz, 3H), 1.27 (t, J= 7.0 Hz, 3H).
MS: cal'd 257 (MH+), exp 257 (MH+).

~ o OH
O -P ~

4-(Ethoxy-methyl-phosphinoylmethyl)-benzoic acid. To a solution of 4-(ethoxy-methyl-phosphinoylmethyl)-benzoic acid methyl ester (660 mg, 2.58 mmol) in THF (5 mL) and MeOH
(3 mL) was added 1N NaOH (2.58 mL, 2.58 mmol), and the mixture was stirred for 18 h. The mixture was diluted with H20 and washed with EtOAc. The aqueous layer was acidified with I
N HCI, saturated with NaCI and extracted with a mixture of CHC13 and MeOH, dried (MgSO4), and filtered. The solvent was evaporated under reduced pressure and the material was used without further purification. 'H NMR (CDC13, 600MHz) S 7.98 (d, J= 7.9 Hz, 2H), 7.34 (dd, J
7.9, 2.0 Hz, 2H), 4.12-4.03 (m, 2H), 3.26 (dd, J= 25.2, 14.2 Hz, 1H), 3.23 (dd, J= 25.2, 14.2 Hz, 111), 1.44 (d, J= 13.8 Hz, 3H), 1.30 (t, J= 7.0 Hz, 3H). MS: cal'd 243 (MH+), exp 243 (MH+).

s i ~I
N
P H HNUO
' ~
O
I

[4-(2-tert-Butoxycarbonylamin o-5-th iophen-2-yl-phenylca rbamoyl)-benzyl]-methyl-phosphinic acid ethyl ester. To a solution of 4-(ethoxy-methyl-phosphinoylmethyl)-benzoic acid (1.0 g, 4.13 mmol) and (2-amino-4-thiophen-2-yl-phenyl)-carbamic acid tert-butyl ester (1.44 g, 4.95 mrnol) in DMF (20 mL) was added HOBT (1.27 g, 8.26 mmol) and EDC
(1.58 g, 8.26 mmol). The reaction mixture was stirred over the weekend. The solvent was removed and the residue was purified by column chromatography on silica gel, eluting with CHC13/MeOH
(2.5% to 20%) to give a glassy yellow solid. At this stage, the enantiomers can be separated via chiral chromatography and deprotected to generate both enantiomers. Spectral data for Boc-protected racemate;'H NMR (CDC13, 600MHz) S 9.31 (br s, 1H), 8.00 (m, 2H), 7.95 (d, J= 8.2 Hz, 2H), 7.40 (dd, J= 8.2, 2.0 Hz, 1 H), 7.37 (dd, J= 8.2, 2.0 Hz, 2H), 7.32 (d, J= 8.2 Hz, 1 H), 7.28 (dd, J= 3.5, 2.3 Hz, 1H), 7.26 (m, 1H), 7.04 (dd, J= 5.0, 3.5 Hz, 1H), 6.95 (br s, 1H), 4.05-3.96 (m, 2H), 3.22 (dd, J= 18.2, 14.4 Hz, 1 H), 3.19 (dd, J= 18.2, 14.4 Hz, 1 H), 1.37 (d, J= 13.8 Hz, 3H), 1.27 (t, J= 7.0 Hz, 3H). MS: cal'd 415 (MH+; -Boc), exp 415 (MH+; -Boc).

s ~
o N
-"O,P I / H HNUO~

Methyl [4-({[2-[(tert-butoxycarbonyl)amino]-5-(2-thienyl)phenyl]amino}carbonyl) benzyl]methyl-phosphinate. DIEA (30.5 ml, 174 mmol) and MeOH (6.97 ml, 172 mmol) were combined in toluene (120 ml) and cooled to 0 C. Methyldichlorophosphine (7.73 ml, 86 mmol) in toluene (20 ml) was added dropwise over 20 minutes. The solution was then allowed to warm to room temperature and stirred for 1 h. The slurry was filtered to remove the precipitated salt, affording a colorless solution. [2-(4-Bromomethyl-benzoylamino)-4-thiophen-2-yl-phenyl]-carbamic acid tert-butyl ester (10.50 g, 21.54 mmol) was added to the solution, and the mixture was stirred at 100 C for 4 h. The solvent was removed, and the residue was purified by flash chromatography (Biotage 65i, 0-10% MeOH/EtOAc, then repeated with a fresh column to remove trace coeluting impurities) to afford a colorless solid. 'H NMR (DMSO-d6) S 9.87 (s, 1 H), 8.72 (s, IH), 7.90 (d, J= 8.0 Hz, 2H), 7.79 (d, J= 1.9 Hz, 1H), 7.59 (d, J= 8.9 Hz, 1 H), 7.50-7.47 (m, 2H), 7.43-7.40 (m, 3H), 7.09 (dd, J= 4.8, 3.7 Hz, IH), 3.55 (d, J=11.1 Hz, 3H), 3.30 (d, J= 18.1 Hz, 2H), 1.42 (s, 9H), 1.32 (d, J= 13.9 Hz, 3H). MS: cal'd 523 (1VIII+), exp 523 (MH+).

s)/
I
O N \

[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-methyl-phosphinic acid ethyl ester.
To a solution of [4-(2-tert-butoxycarbonylamino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-methyl-phosphinic acid ethyl ester (500 mg, 0.972 mmol) in DCM (10 mL) was added TFA (5 mL, 64.9 mmol). After 2 h, the solvent was removed, and to the residue was added EtOAc and sat. NaHC03. The aqueous fraction was extracted further with EtOAc, dried (MgSO4), filtered and the solvent was evaporated under reduced pressure. The material was used without further purification. 'H NMR (DMSO-d6) S 9.69 (br s, 1H), 7.92 (d, J= 7.9 Hz, 2H), 7.44 (m, IH), 7.39 (dd, J= 7.9, 2.0 Hz, 1 H), 7.33 (dd, J= 5.0, 1.8 Hz, 1 H), 7.27 (dd, J= 8.2, 2.0 Hz, I H), 7.21 (dd, J= 3.5, 1.0 Hz, 1 H), 7.02 (dd, J= 5.0, 3.5 Hz, 1 H), 6.78 (d, J= 8.2 Hz, 1 H), 5.13 (s, 2H), 3.97-3.88 (m, 2H), 3.40-3.25 (m, 2H), 1.32 (d, J= 13.8 Hz, 3H), 1.27 (t, J= 7.0 Hz, 3H). MS: cal'd 415 (MH+), exp 415 (MH+).

s~
xI
~
lP NHZ

Methyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]methylphosphinate.
Methyl [4-({ [2-[(tert-butoxycarbonyl)amino]-5-(2-thienyl)phenyl]amino}
carbonyl)benzyl]
methyl-phosphinate (6.69 g, 13.37 mmol) was dissolved in CH2ClZ (48 ml), and TFA (12 ml) was added. The solution was stirred at room temperature for 3 h and evaporated. The residue was dissolved in CH2C12, washed with saturated NaHCO3 and brine, dried (MgSO4), and evaporated. The crude was then slurried in CH2C12 and triturated with a small amount of hexanes to precipitate the title compound as a colorless solid. This material was subjected to chiral SFC to provide enantiopure samples of the two enantiomeric forms.
Spectral data for racemate: 'H NMR (DMSO-d6) S 9.68 (s, 1 H), 7.92 (d, J= 7.9 Hz, 2H), 7.44 (d, J= 1.6 Hz, 1 H), 7.3 8 (dd, J= 8.1, 2.0 Hz, 2H), 7.32 (dd, J= 5.2, 0.9 Hz, 1 H), 7.27 (dd, J=
8.3, 2.2 Hz, 1 H), 7.21 (d, J= 3.6 Hz, 1 H), 7.01 (dd, J= 5.0, 3.6 Hz, 1H), 6.78 (d, J= 8.7 Hz, 1 H), 5.13 (s, 2H), 3.55 (d, J= 11.0 Hz, 3H), 3.29 (d, J= 18.0 Hz, 2H), 1.32 (d, J= 13.7 Hz, 3H). MS: cal'd 401 (MH+), exp 401 (MH+).

s /

O
O~ N
HO ~P I / H HNUO~
IOI

[4-(2-tert-Butoxyca rbonylamin o-5-thiophen-2-yl-phenylcarbamoyl)-benzyl] -methyl-phosphinic acid. To a solution [4-(2-tert-butoxycarbonylamino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-methyl-phosphinic acid ethyl ester (377 mg, 0.733 mmol) in dioxane (2 mL) was added NaOH (1 mL, 5.00 mmol, 5M) and the solution was heated to 60 C. After 18 h, the reaction was diluted with EtOAc, acidified with 1N HCI. The organic layer was dried (MgSO4), filtered and the solvent was evaporated under reduced pressure. The material was used without further purification. 'H NMR (DMSO-d6) S 9.94 ( s, 1H), 8.74 (br s, IH), 7.91 (d, J=
8.2 Hz, 2H), 7.79 (d, J= 2.0 Hz, 1 H), 7.58 (d, J= 8.5 Hz, 1 H), 7.50 (dd, J=
5.0, 1.2 Hz, 1 H), 7.48 (dd, J= 8.5, 2.0 Hz, 1H), 7.44-7.39 (m, 3H), 7.10 (dd, J= 5.3, 3.5 Hz, 1H), 3.13 (d, J= 17.9 Hz, 2H), 1.43 (s, 9H), 1.21 (d, J= 13.8 Hz, 3H). MS: cal'd 387 (MH+; -Boc), exp 387 (MH+; -Boc).

s i o ~]
lul q ON
`O~P ( i H HNUO
O
I ~
I
[4-(2-tert-Butoxycarbonylamino-5-thioph en-2-yl-ph en ylcarbamoyl)-benzyl]-methyl-phosphinic acid cyclobutyl ester. To a solution of [4-(2-tert-butoxycarbonylamino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-methyl-phosphinic acid (57 mg, 0.117 mmol), cyclobutanol (0.038 mL, 0.703 mmol), and Hunig'sBase (0.031 mL, 0.176 mmol) in DMF (2 mL) was added BOP (78 mg, 0.176 mmol). After 18 h, the reaction was purified by preparative HPLC Reverse phase (C-18), eluting with acetonitrile/water plus 0.025%TFA (40-100%) to give material after extraction of fractions with EtOAc. 'H NMR (DMSO-d6) S 9.88 ( s, 1H), 8.74 (br s, 1H), 7.90 (d, J= 7.6 Hz, 2H), 7.79 (br s, 1H), 7.58 (d, J= 8.5 Hz, 1H), 7.52-7.47 (m, 2H), 7.44-7.39 (m, 3H), 7.12-7.09 (m, 1 H), 4.64 (m, 1 H), 3.27 (dd, J= 23.2, 17.6 Hz, 1 H), 3.25 (dd, J= 23.2, 17.6 Hz, 1H), 2.25-21.4 (m, 2H), 2.05-1.94 (m, 2H), 1.67-1.60 (m, 1H), 1.49-1.42 (m, 1H), 1.43 (s, 9H), 1.31 (d, J= 14.1 Hz, 3H). MS: cal'd 441 (MH+; -Boc), exp 441 (MH+; -Boc).

Additional analogs were prepared in procedures similar to those described for the preparations of the above examples.

Table 5. E; Alkyl Phosphinates Cpd# Structure Name MS Salt Forms s 0 [4-(2-Amino-5-thiophen-2-yl- cal'd 462 TFA
0_~ -", ~ phenylcarbamoyl)-benzyl]- (MH+), Salt, H2N phenyl-phosphinic acid exp 462 Free methyl ester (MH+) base s o [4-(2-Amino-5-thiophen-2-yl- cal'd 448 2 O o ~ phenylcarbamoyl)-benzyl]- (MH+exp), TFA
448 Salt HO HZN phenyl-phosphinic acid (MH+) s \f o [4-(2-Amino-5-thiophen-3-yl- cal'd 463 phenylcarbamoyl)-benzyl]- (MH+), TFA
3 O'P~'0 ~H phenyl-phosphinic acid exp 463 Salt p H2N methyl ester (MH+) ~
_ [4-(4-Amino-l-phenyl-lH- cal'd 447 4 o N-N pyrazol-3-ylcarbamoyl)- (MH+), TFA
~ N benzyl]-phenyl-phosphinic exp 447 Salt o P~ ~ i HF~N acid methyl ester (MH+) ~

S ~ [4-(2-Amino-5-thiophen-2-yl- cal'd 415 0 phenylcarbamoyl)-benzyl]- (MH+), Free ZI-I methyl-phosphinic acid ethyl exp 415 base O N ester. (MH+) [4-(4-Amino-biphenyl-3- cal'd 409 ylcarbamoyl)-benzyl]- (MH+), Free 6 methyl-phosphinic acid ethyl exp 409 base O \ N
~ ester (MIi+) H
_~ ( , NH2 [4-(4-Amino-biphenyl-3- cal'd 409 ylcarbamoyl)-benzyl]- (MH+), Free 7 methyl-phosphinic acid ethyl exp 409 base N ester (MH+) ~'\o,P I ~ H NH2 [4-(4-Amino-biphenyl-3- cal'd 409 8 0 ylcarbamoyl)-benzyl]- (MH+), Free N methyl-phosphinic acid ethyl exp 409 base , P I/ H NHZ ester (MH+) s [4-(2-Amino-5-thiophen-2-yl- cal'd 441 9 0 phenylcarbamoyl)-benzyl]- (MH+), Free ^ o ~ methyl-phosphinic acid exp 441 base `o-P H NH2 cyclobutyl ester (MH+) i S Methyl [4-({[2-amino-5-(2- cal'd 401 o thienyl)-phenyl]amino}- (MH+), Free carbonyl)benzyl]- exp 401 base \o~P H NHZ methylphosphinate (MH+) S ~ Isopropyl [4-({[2-amino-5-(2- cal'd 429 11 0 thienyl)-phenyl]amino}- (MH+), Free NZ~11 carbonyl)benzyl]- exp 429 base H NH2 methylphosphinate (MH+) s 1V-[2-Amino-5-(2-thienyl)phenyl]-4- cal'd 477 12 ~ ~ ({methyl[(pyridin-3- (MH+), Free o (~ H ylmethyl)amino]- exp 477 base H-~' NHz phosphoryl}methyl)- (MH+) N benzamide s Pyridin-3-ylmethyl [4-({[2-0 ;( amino-5-(2- cal'd 478 13 ZN-1 thienyl)phenyl]amino}- (MH+). Free NHz carbonyl)benzyl]methyl- exp 4+8 base (o1 phosphinate ~ ) N

-s ~
Methyl [4-({[2-amino-5-(2- cal'd 415 14 ~ thienyl)-phenylJamino}- (MH+), Free oN cazbonyl)benzyl]- exp 415 base o_P ~ ~- H NHx ethylphosphinate (MH+) s Ethyl [4-({[2-amino-5-(2- cal'd 429 15 thienyl)-phenyl]amino}- (MH+), Free o~N carbonyl)benzyl]- exp 429 base p .- H NH2 ethylphosphinate (MH+) s ~
Isopropyl [4-({[2-amino-5-(2- cal'd 443 16 thienyl)-phenyl]amino}- (1VIH+), Free N carbonyl)benzyl]- exp 443 base H NHZ ethylphosphinate (1VlH+) s x Cyclobutyl [4-({[2-amino-5- cal'd 455 17 ! (2-thienyl)-phenyl]amino}- (MH+), Free ~ \ carbonyl)benzyl]- exp 455 base o,P H NHy ethylphosphinate (MH+) s 1V-[2-Amino-5-(2-thienyl)phenyl]-4- cal'd 491 18 ~ ({ethyl[(pyridin-3- (MH+), Free o H~ ylmethyl)amino]- exp 491 base C NHZ phosphoryt}methyl)benzamide s Pyridin-3-ylmethyl [4-({[2-0 amino-5-(2- cal'd 492 Free 19 +o ~ N~ thienyt)phenyl]arnino} 492 ) base \ _P ~ H NH2 -carbonyl)benzyl]ethyl- exp (j_o phosphinate (MH+) p o ~ Cyclobutyl [4-( {[2-amino-5- cal'd 503 (2-thienyl) 20 N I -~phenyl]amino} (MH+), Free O^ exp 503 base cazbonyl}benzyI]phenylphosp P H NH2 (MH+) hinate S ~

0 \
Methyl [4-({[2-amino-5-(2- cal'd 481 21 p N thienyl)phenyl]arnino } carbon (MH+), Free \~_ H Nf..~2 yl)benzyl](4-fluorophenyl) exp 481 base P.
phosphinate (MH+) F

s C', methyl [3-({[2-amino-5-(2- cal'd 463 thienyl)phenyl]amino} (1VIII+), Free carbonyl)benzyl] exp 463 base 0' P N "l phenylphosphinate (1VIH+) S /
Isopropyl [3-({[2-amino-5-(2- cal'd 429 thienyl) (MH+), Free 23 0 phenyl]amino}carbonyl) exp 429 base 0'P N benzyl]methylphosphinate (MH+) S ~ cal'd 415 Methyl [3-({[2-amino-5-(2- (~+)~ Free 24 0 thienyl)phenyl]amino} carbon 0-\i N / yl)benzyl]ethylphosphinate e( p~4+> base S C., p ethyl[4-({[2-amino-5-(2- cal'd 477 25 1 thienyl)phenyl]amino}carbon (MH+), Free JJJJ.JLJ...J o H yl)benzyl]phenylphosphinate exp 477 base ~ NH2 (MH ) S ~
0 isopropyl[4-({[2-amino-5-(2- cal'd 491 (MH+), Free 26 thienyl)phenyl]amino}cazbon O Nk H yl)benzyl]phenylphosphinate exp 491 base or NH2 (MIR+) g ~

0 2,2,2-trifluoroethyl[4-({[2- cal'd 531 amino-5-(2- (MH+), Free 27 O ~ H thienyl)phenyl]amino}carbon exp 531 base F F O~ yl)benzyl]phenylphosphinate (MH+) F
S i ethyl[4-({[2-amino-5-(2- cal'd 443 O thienyl)phenyl]amino}carbon (MH+), Free N yl)benzyl]isopropyl exp 443 base O.F~ H H2 phosphinate (MH+) S i ethyl[4-({[2-amino-5-(2- cal'd 441 O thienyl)phenyl] amino} carbon (MH+), Free 'L'O ~ N yl)benzyl]cyclopropyl exp 441 base O. ~ H NH2 phosphinate (MH+) S~

3-hydroxy-3-methylbutyl[4- cal'd 535 30 010~ 0 100H ([2-amino-5-(2- (MH+), Free O. NH2 thienyl)phenyl]amino}carbon exp 535 base e yl)benzyl]phenylphosphinate (MH+) HO

S ~

O 2-amino-2-methylpropyl[4- cal'd 520 31 / ~ O N ({[2-amino-5-(2- (MH+), Free Q' H thienyl)phenyl]amino}carbon exp 520 base O.~ H2 yl)benzyl]phenylphosphinate (NIIi+) S ~

O 2-amino-2-oxoethyl[4-({[2- cal'd 506 amino-5-(2- (MH+), Free 32 2 O H thienyl)phenyl]amino}carbon exp 506 base O. f~ H2 yl)benzyl]phenylphosphinate (MH+) O--, s methyl[4-({[2-amino-5-(2- cal'd 427 33 0 thienyl)phenyl]amino}carbon (1VIH+), Free O N yl)benzyl]cyclopropyl exp 427 base ~ H NH2 phosphinate (1V1~i+) I

S /
methyl (,S)-[4-({[2-amino-5- cal'd 401 34 O (2-thienyl)phenyl] (MH+), Free amino}carbonyl)benzyl] exp 401 base N methylphosphinate (MH+) H

meth yl (R)-[4-({[2-amino-5- cal'd 401 O (2-thienyl)phenyl]amino} (MH+), Free 35 O Ncarbonyl)benzyl]methyl exp 401 base P I/ H NH phosphinate (MH+) Z
,. ~ 2 ~-O

methyl (4-{[(4-amino cal'd 395 36 o biphenyl-3- (MH+), Free yl)amino]carbonyl} exp 395 base N benzyl)methylphosphinate (MH+) S i 3-hydroxy-3-methylbutyl [4- cal'd 487 37 o ({[2-amino-5-(2- (MH+), Free OH ,p N 105; thienyl)phenyl]amino}carbon exp 487 base o_P H NH2 yl)benzyl]ethylphosphinate (MH+) S ~ 3-hydroxy-3-methylbutyl [4- cal'd 38 0 ({[2-amino-5-(2- 473(MH+) Free oH thienyl)phenyl]amino}carbon , exp base o,p I~ H NH2 yl)benzyl]methylphosphinate 473(MH+) /

~ 2-(ethylsulfonyl)ethyl[4-({[2- cal'd o amino-5-(2- 507(MH+) Free 39 ~o o ~ N thienyl)phenyl]amino}carbon , exp 507 base yl)benzyl]methylphosphinate (MH+) ~-~o_P H NH2 /

Procedures for E. Preparation of Benzylnicotinyl Phosphonates and Phosphinates.

O

OMe Br I

Methyl 6-(bromomethyl)nicotinate. A mixture of methyl 6-methylnicotinate (2.00g, 13.2 mmol) and CC14 (88.2 mL) was treated with NBS (2.57 g, 14.5 mmol) and benzoyl peroxide (320 mg, 1.32 mmol) and heated to a refluxing temperature overnight. The resulting brown suspension was concentrated and purified by MPLC (10-40% EtOAc in heptane to afford the requisite product as a yellow solid. 1H NMR (DMSO-d6, 600MHz) S 9.01 (dd, J=
2.4, 0.8 Hz, 1H), 8.28 (dd, J= 7.9, 2.1 Hz, 1H), 7.68 (dd, J= 8.2, 0.9 Hz, 1H), 4.74 (s, 3H), 3.84 (s, 3H).
MS: cal'd 230 and 232 (MH+), exp 230 and 232 (MH+).

O ~ OMe OP N
~
Methyl 6-[(diethoxyphosphoryl)methyl]nicotinate. A mixture of methyl 6-(bromomethyl) nicotinate (153 mg, 0.665 mmol) and triethylphosphine (0.58 mL, 3.33 mmol) were heated to 125 C for 1 h in a sealed flask via the microwave. The resulting mixture was concentrated via rotovap and purified by MPLC (EtOAc isocratic) to afford the requisite product as a=light yellow oil. 'H NMR (DMSO-d6, 600MHz) S 8.97 (m, 1H), 8.23 (m, 1H), 7.59 (m, 1H), 3.96 (dt, J=
15.3, 7.0 Hz, 4H), 3.86 (s, 3H), 3.53 (d, J= 22.3 Hz, 2H), 1.15 (t, J=7.0 Hz, 3H). MS: cal'd 288 (MH+), exp 288 (MH+).

O ONa 6-[(Diethoxyphosphoryl)methyl]nicotinic acid. A mixture of inethyl6-[(diethoxyphosphoryl) methyl]nicotinate (108 mg, 0.376 mmol), THF (1.13 mL) and MeOH (0.376 mL) was treated with LiOH (0.376 mL, 3.OM in water, 1.13 mmol) and stirred for 2 h. The mixture was concentrated to a white residue used crude in the next step. 'H NMR (DMSO-d6, 600MHz) 8 8.95 (m, 1 H), 8.22 (m, 1 H), 7.48 (m, 1 H), 3.96 (dt, J= 15.3, 7.0 Hz, 4H), 3.53 (d, J= 22.0 Hz, 2H), 1.15 (t, J=7.0 Hz, 3H). MS: cal'd 274 (MH+), exp 274 (MH+).

S
O :/

N H \

O
~
Diethyl {[5-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)pyridin-2-yl]methyl}
phosphonate. A mixture of 6-[(Diethoxyphosphoryl)methyl]nicotinic acid (55.5 mg, 0.188 mmol), tert-butyl [2-amino-4-(2-thienyl)phenyl]carbamate (65.5 mg, 0.226 mmol) HOBT (30.5 mg, 0.226 mmol), and EDC (43.3 mg, 0.226 mmol) was taken into DMF (1.32 mL) and stirred for 3 days. The mixture was diluted with EtOAc and washed with 50% saturated aqueous NaHCO3 3x, brine, dried (MgSO4) and concentrated to afford a residue taken into DCM (2 mL) and TFA (1 mL) and stirred for lh. This mixture was concentrated via rotovap, dissolved in minimum MeOH and purified via HPLC (10-100% MeCN in water with 0.025% TFA) to afford fractions poured into saturated aqueous NaHCO3 and extracted with EtOAc 2x.
The combined organic layers were washed with brine, dried (MgSO4) and concentrated to afford 36.5 mg of the requisite product as a light yellow solid. 'H NMR (DMSO-d6, 600MHz) S 9.84 (s, 1H), 9.04 (s, 1H), 8.26 (dd, J= 7.9, 2.0 Hz, 1H), 7.47 (dd, J= 8.2, 1.8 Hz, 1H), 7.44 (d, J=
2.0 Hz, 1H), 7.33 (dd, J= 5.0, 0.9 Hz, 1 H), 7.28 (dd, J= 8.8, 2.3 Hz, 1 H), 7.22 (dd, J= 3.5, 1.2 Hz, 1 H), 7.2 (dd, J
= 5.0, 3.5 Hz, 1H), 6.78 (d, J= 8.2 Hz, 1H), 5.22 (s, 2H), 3.95 (dt, J= 7.3, 7.3 Hz, 4H), 3.53 (d, J= 22.3 Hz, 2H), 1.19 Hz (t, J= 7.0 Hz, 3H). MS: cal'd 446 (MH+), exp 446 (MH+).

Table 6. E; Benzylnicotinates Cpd# R Name MS Salt forms s~
Diethyl {[5-( {[2-amino-5-(2- cal'd 446 1 0 ~ I thienyl)phenyl]amino}carbon (I%M+), exp Free o ~ N Z-11 yl)pyridin-2- base ^o ;P I N H ~6 (~+) NH2 yl]methyl}phosphonate /-o s Diethyl {[5-( {[2-amino-5-(3-cal'd 446 2 0 thienyl)phenyl]amino}carbon (MI.i+), exp Free o ~ N~ yl)pyridin-2- 446 + base ~ N H NH2 yl]methyl}phosphonate (~ ) s / .
Methyl { [5-( { [2-amino-5-(2- , 3 thienyl)phenyl]amino} carbon cal d 4eX Free p base N yl)pyridin-2- 464 ~o'P N H N~ yl]methyl}phenylphosphinate ( ) s~
~
Methyl {[5-( {[2-amino-5-(3- cal'd 464 4 1 thienyl)phenyl]amino}carbon (MH+)eX Free N yl)pyridin-2- ' p base \d P NJ H NF~2 yl]methyl}phenylphosphinate 464 (MH-) Pr ocedures for F. Preparation of a-OH. -F or -NRIR2 Substituted Alkyl Phosphonates.
O OMe MeO-~ I /
Meo' OH
4-[1-(Dimethoxy-phosphoryl)-1-hydroxy-ethyl]-benzoic acid methyl ester. A
solution of 4-acetyl-benzoic acid methyl ester (1.0g, 5.61 mmol) in THF (5.6 mL) was cooled to 0 C and dimethyl phosphite (0.7 g, 6.17 mmol) and N,N,N,N-tetramethyl-guanidine (0.07 g, 0.56 mmol) were added dropwise. The reaction mixture was warmed to ambient temperature and stirred for 30 minutes. The reaction mixture was diluted with EtOAc and washed with IN
aqueous HCl (2x), brine, then dried (MgSO4) and concentrated in vacuo. The residue was purified by MPLC
(Isocratic CH2Cl2 for 6 CV then 0-7.5% MeOH in CHZCl2) to afford the title compound: MS:
cal'd 289 (MH+), exp 289 (MH+) MeO- OMe Meo"
F
4-[1-(Dimetboxy-phosphoryl)-1-fluoro-ethyl]-benzoic acid methyl ester. 4-[1-(Dimethoxy-phosphoryl)-1-hydroxy-ethyl]-benzoic acid methyl ester (0.60 g, 2.08 mmol) was added over 30 minutes to a stirring solution of DAST (IM in CHZC12) cooled to -78 C under a dry nitrogen environment. The mixture was warmed to ambient temperature and stirred. After stirring for 90 minutes the reaction mixture was carefully quenched with ethanol containing pyridine (pyr:

twice volume of DAST). After stirring for 30 mins the mixture was poured into ice cold water and extracted into DCM (3x). The combined organic extracts were washed with dilute HCI, water, brine, dried (MgSO4) then concentrated in vacuo. The material was carried forward without fiuther purification. MS: cal'd 291 (MH+), exp 291 (MH+) MeO_ ~
MeO, F
4-[1-(Dimethoxy-phosphoryl)-1-fluoro-ethyl}-benzoic acid. 4-[1-(Dimethoxy-phosphoryl)-1-fluoro-ethyl]-benzoic acid methyl ester (0.56 g, 1.93 mmol) was made 0.25 M in dioxane and to this stirring solution was added 3 M aqueous LiOH (0.14 g, 5.79 mmol). The resulting mixture was stirred at ambient temperature for 18 hours. The mixture was neutralized with iN aq HCl and concentrated in vacuo. The residue was carried forward without further purification: MS:
cal'd 277 (MH+), exp 277 (MH+) O

N
MeO-~ ~ H
MeO~ NH2 F
{1-[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-phenyl]-1-fluoro-ethyl}-phosphonic acid dimethyl ester. 4-[1-(Dimethoxy-phosphoryl)-1-fluoro-ethyl]-benzoic acid (50 mg, 0.18 mmol), (2-Amino-4-thiophen-2-yl-phenyl)-carbamic acid tert-butyl ester (63 mg, 0.22 mmol), BOP (96 mg, 0.22 mmol), and DIPEA (70 mg, 0.54 mmol) were combined and diluted with DMF (0.72 mL). The resulting mixture was stirred at ambient temperature for 18 hours. The reaction mixture was purified directly by HPLC (20-85% MeCN in water w/0.025%
TFA). Pure fractions were identified, combined, and concentrated in vacuo. The residue was diluted with 5:1 CHZCI2:TFA. The resulting solution was stirred at ambient temperature for lh then concentrated in vacuo to afford the title.compound: I H NMR (DMSO-d6, 600MHz) ~ 10.15 (s, 1 H), 8.05 (d, J= 9.0 Hz, 2H), 7.56-7.62 (m, 3H), 7.43-7.48 (m, 2H), 7.37 (d, J=3.5 Hz, IH), 7.06-7.09 (m, 2H), 3.72 (d, J=10.8 Hz, 3H), 3.57 (d, J=10.8 Hz, 3H), 1.86-1.96 (m, 3H). MS:
cal'd 449 (MH+), exp 449 (MH+) = \ \ . .

4-Formyl-benzoic acid benzyl ester. 4-Formyl-benzoic acid (2.0 g, 13.3 mmol) was made 0.2 M in 10:1 MeOH :Water and stirred. The stirring slurry was adjusted to pH=8 with 20% aq Cs2CO3. The resulting homogenous solution was stirred at ambient temperature for 20 mins then concentrated to dryness in vacuo. The residue was dried under high vacuum then treated with benzyl bromide (3.4 g, 20.0 mmol) 0.5 M in DMF. The slurry was stirred under nitrogen at ambient temperature for 18 hours. The reaction mixture was diluted with 1/2 saturated aqueous sodium bicarbonate and extracted with EtOAc. The organic layer was separated and again washed with 1/2 saturated aqueous sodium bicarbonate, then washed with brine, dried (MgSOa) and concentrated in vacuo. The residue was purified by MPLC (5-45 % EtOAc in Hexanes) to afford the title compound: MS: cal'd 241 (MH+), exp 241 (MH+) MeO., II
MeOr'P
OH
4-[(Dimetboxy-phosphoryl)-hydroxy-methyl]-benzoic acid benzyl ester. A
solution of 4-fonnyl-benzoic acid benzyl ester (0.50 g, 2.08 mmol) in THF (2.0 mL) was cooled to 0 C, then dimethyl phosphite (0.25 g, 2.29 mmol) and N,N,N,N-tetramethyl-guanidine (0.02 g, 0.21 mmol) was added dropwise. The reaction mixture was warmed to ambient temperature. After stirring for 45 mins the reaction mixture was diluted with EtOAc and washed with 1N aqueous HCI (2x), brine, then dried (MgSOa) and concentrated in vacuo to give the title compound: MS:
cal'd 351 (MH+), exp 351 (Ml-I+) O
o ~ o Me0'~ I ~
F
4-[(Dimethoxy-phosphoryl)-tluoro-methyll-benzoic acid benzyl ester. 4-[(Dimethoxy-phosphoryl)-hydroxy-methyl]-benzoic acid benzyl ester (0.20 g, 0.22 mmol) was added over 30 mins to a stirring solution of DAST (1M in CHZC12) cooled to -78 C under a dry nitrogen environment. The mixture was warmed to RT and stirred for 18 hours. The reaction mixture was then quenched with ethanol containing pyridine (pyr: twice volume of DAST). After another 30 mins the mixture was poured into ice cold water and extracted into DCM (3x). The combined organic extracts were washed with dilute aq HCI, water, brine, dried (MgSO4) then concentrated in vacuo. The residue was purified by HPLC (20-85% MeCN in Water w/0.025%
TFA) to afford the title compound: MS: cal'd 353 (MH+), exp 353 (MH+) Me0,,0 I OH
MeO' ~
F
4-[(Dimethoxy-phosphoryl)-fluoro-methyl]-benzoic acid. To a stirring solution of 4-[(dimethoxy-phosphoryl)-fluoro-methyl]-benzoic acid benzyl ester (76 mg, 0.216 mmol) in MeOH (0.21M) was added 20 mol% Pd on Carbon (0.043 mmol). The resulting mixture was degassed with alternating vacuum and hydrogen gas (4x), then stirred under a hydrogen atmosphere (latm) at ambient temperature for 18 hours. The reaction mixture was filtered through a nylon syringe filter and concentrated in vacuo to give the title compound: MS: cal'd 263 (MH+), exp 263 (MH+) O
~
Me0~10 I H
Me / . NH2 F
{[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-phenyl]-tluoro-methyl}-phosphonic acid dimethyl ester. 4-[(Dimethoxy-phosphoryl)-fluoro-methyl]-benzoic acid (52 mg, 0.198 mmol), (2-amino-4-thiophen-2-yl-phenyl)-carbamic acid tert-butyl ester (69 mg, 0.238 mmol), EDC (57 mg, 0.298 mmol), HOBT (36 mg, 0.238 mmol), and DIPEA (77 mg, 0.595 mmol) were combined and diluted with DMF (0.79 mL). The resulting mixture was stirred at ambient temperature for 18 hours. The reaction mixture was purified directly by HPLC
(20-85% MeCN
in water w/0.025% TFA). Pure fractions were combined and concentrated in vacuo. The residue was diluted with 10:1 DCM:TFA and stirred at ambient temperature. After 2 hours the deprotection was complete and the mixture was concentrated in vacuo to give the title compound: 'H NMR (DMSO-d6, 600MHz) S 9.87 (br-s, 1 H), 8.05 (d, J= 8.4 Hz, 2H), 7.56 (d, J
= 7.8 Hz , 2H), 7.48 (s, 1H), 7.37 (d, J=5.0 Hz, 1H), 7.32 (d, J=8.4 Hz, 1H), 7.24-7.27 (m , IH), 7.04 (dd, J=3.6 Hz, J=5.0 Hz, 1 H), 6.86 (d, J=8.4 Hz, IH), 6.33 (dd, J=8.4 Hz, J=43.8 Hz, 1H), 3.64-3.71 (m, 6H). MS: cal'd 435 (MH+), exp 435 (MH+) 0 ( \ OMe meo-MeO' A /
NH
I

4-(Benzylamino-(dimethoxy-phosphoryl)-methyl)-benzoic acid methyl ester. 4-[(E)-Benzylimino-methyl]-benzoic acid methyl ester (0.50 g, 1.97 mmol) was made 0.3 M in dimethyl phosphite (6.5 mL) and to this stirring solution was added catalytic N,N,N,N-tetramethyl-guanidine (0.02 g, 0.20 mmol). After stirring at ambient temperature for 4 hours the reaction mixture was diluted with EtOAc and washed with 1M aqueous NaOH (3x).
The organic layer was washed further with brine, then dried (MgSO4) and concentrated in vacuo. MPLC
purification (10-70% EtOAc in CH2CI2) gave the title compound: MS: cal'd 364 (MH+), exp 364 (MH+) O ~ OMe MeO~~ I /
` /Ot HN lf 1lO
4-[tert-Butoxycarbonylamino-(dimethoxy-phosphoryl)-methyl]-benzoic acid methyl ester.
To a solution of 4-[benzylamino-(dimethoxy-phosphoryl)-methyl]-benzoic acid methyl ester (0.40 g, 1.10 mmol) in anhydrous MeOH (14.7 mL) was added BOC anhydride (0.36 g, 1.65 mmol), and 10 mol% Pd on carbon (12 mg, 0.11 mmol). The solution was degassed with alternating vacuum and hydrogen gas (4x). The reaction mixture was stirred at ambient temperature under 1 atm of hydrogen. Affter stirring for 18 hours the reaction mixture was degassed with alternating vacuum and argon gas, then filtered through a nylon syringe filter and the filtrate was concentrated in vacuo. The residue contained residual BOC
anhydride and was purified by MPLC (5-45% EtOAc in CHZC12) to give the title compound: MS: cal'd 374 (MH+), exp (MH+) OH
Meo_ I /
MeO' HNyOt O

4-[tert-Butoxycarbonylamino-(dimethoxy-phosphoryl)-methyl]-benzoic acid. 4-[tert-Butoxycarbonylamino-(dimethoxy-phosphoryl)-methyl]-benzoic acid methyl ester (150 mg, 0.402 mmol) was made 0.25 M in dioxane and to this stirring solution was added 3 M aq LiOH
(29 mg, 1.205 mmol). The resulting mixture was stirred at ambient temperature for 18 hours.
The reaction mixture was diluted with EtOAc and washed with IN aq HCI. The organic layer was washed with brine, dried (MgSO4) and concentrated in vacuo. The residue was carried onto subsequent coupling without further purification: 'H NMR (DMSO-d6, 600MHz) S
12.68 (br-s, 1 H), 8.07-8.13 (m, 1 H), 7.84-7.92 (m, 2H), 7.50-7.61 (m, 2H), 5.15-5.25 (m, 1 H), 3.46-3.63 (m, 6H), 1.36 (s, 9H).

s i I

N
MeO~~ ~ H
MeO~ ~ NH2 {Amino-[4-(2-amino-5-thiophen-2-yl-phenylcarbamoyl)-phenyl]-methyl}-phosphonic acid dimethyl ester. 4-[tert-Butoxycarbonylamino-(dimethoxy-phosphoryl)-methyl]-benzoic acid (76 mg, 0.212 mmol), (2-amino-4-thiophen-2-yl-phenyl)-carbamic acid tert-butyl ester (74 mg, 0.254 mmol), EDC (61 mg, 0.317 mmol), HOBT (39 mg, 0.254 mmol), and DIPEA (82 mg, 0.635 mmol) were combined and diluted with DMF (0.85 mL). The resulting'mixture was stirred at ambient temperature for 18 hours. The reaction mixture was purified directly by HPLC
(20-85% MeCN in water w/0.025% TFA). Pure fractions were identified, combined, then concentrated in vacuo. The residue was diluted with 10:1 DCM:TFA and stirred at ambient temperature. After 2 h the mixture was concentrated in vacuo to give the title compound: 'H
NMR (DMSO-d6, 600MHz) S 9.81 (s, 1H), 9.06 (br-s, 2H), 8.05 (d, J=9.0 Hz, 2H), 7.62 (d, J
=9.0 Hz, 2H), 7.44-7.46 (m, 1 H), 7.34-7.36 (m, 1 H), 7.29-7.32 (m, 1H), 7.22-7.24 (m, IH), 7.03-7.05 (m, IH), 6.82 (d, J=7.8 Hz, 2H), 5.20 (d, J=17.4 Hz, 1H), 3.73 (d, J=10.8 Hz, 3H), 3.58 (d, J=10.8 Hz, 3H). MS: cal'd 432 (MH+), exp 432 (MH+).

Additional analogs were prepared in procedures similar to those described for the preparations of the above examples.

Table 7. F; a-F, -OH, -NR,RZ Substituted Alkyl Phosphonates.
Cpd# Structure Name MS Salt Forms s ~
{ [4-(2-Amino-5-thiophen-2-o ~ ~ yl-phenylcarbamoyl)- cal'd 433 \ H~ phenyl]-hydroxy-methyl}- (MH+), exp baFree se a P NHz phosphonic acid dimethyl 433 (MH+) a oH ester s { 1-[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)- cal'd 449 TFA
2 O,P H NH2 phenyl]-1-fluoro-ethyl}- (MH+), exp Salt phosphonic acid dimethyl 449 (MH+) F ester { 1-[4-(2-Amino-5-thiophen-o 3-yl-phenylcarbamoyl)- cal'd 449 TFA
TFA
3 N phenyl]-1-fluoro-ethyl}- (MH+), exp Salt If " NHz phosphonic acid dimethyl 449 (MH+) F ester V
{ 1-[4-(4-Amino-bipheriyl-3- , 4 ylcarbamoyl)-phenyl]-1- cal d 44X TFA
o N fluoro-ethyl}-phosphonic (~)' p Salt ~ 443 +
- -o ""2 acid dimethyl ester (~ ) ~ F

s { [4-(2-Amino-5-thiophen-3-o yl-phenylcarbamoyl)- cal'd 433 TFA
~ N phenyl]-hydroxy-methyl}- (MH+), exp OP I~ H NH2 phosphonic acid dimethyl 433 (MH+) Salt --O OH ester { [4-(4-Amino-biphenyl-3-o I ylcarbamoyl)-phenyl]- cal'd 427 TFA
6 0 N hydroxy-methyl)- (1viH+), exp Salt \~P I/ H NH2 phosphonic acid dimethyl 427 (MH+) 0 o ester ~ OH

s { [4-(2-Amino-5-thiophen-2-o yl-phenylcarbamoyl)- cal'd 435 TFA
7 N phenyl]-fluoro-methyl}- (1VIH+), exp P0~ H NH2 phosphonic acid dimethyl 435 (MH+) Salt -o ester F

s /
{Amino-[4-(2-amino-5-o thiophen-2-yl- cal'd 432 TFA
8 H phenylcarbamoyl)-phenyl]- (MH+), exp Salt p NH2 methyl}-phosphonic acid 432 (MH+) -o NH2 dimethyl ester Procedures for G. Preparation of oc-F. -OH, -NR1R2 Substituted Alkyl Phosphinates.
Additional analogs were prepared in procedures similar to those described for the preparations of the above examples.

Table 8. G; a-F, -OH, -NRIRz Substituted Alkyl Phosphinates Cpd# Structure Name MS Salt Forms s i { [4-(2-Amino-5-thiophen-2-o yl-phenylcarbamoyl)- cal'd 493 Free 1 0 N phenyl]-hydroxy-methyl}- (MH+), exp P H NH2 phenyl-phosphinic acid 493 (MH+) base ~o OH ethyl ester { 1-[4-(2-Amino-5-thiophen-s "I, o 2-yl-phenylcarbamoyl)- cal'd 495 2 ~ phenyl]-1-fluoro-ethyl}- (MH+), eXp Free a ~ NNH= phenyl-phosphinic acid 495 (MH+) base o F methyl ester s ~
~
{ 1-[4-(2-Amino-5-thiophen-o ~ 3-yl-phenylcarbamoyl)- cal'd 495 Free phenyl]-1-fluoro-ethyl}- (MH+), exp base 3 c\ o I H
P NHz phenyl-phosphinic acid 495 (MH+) -'o F methyl ester - . ~ \ . .
1-[4-(4-Amino-biphenyl-3-o ~ I ylcarbamoyl)-phenyl]-1- cal'd 489 Free 4 0 ~ N fluoro-ethyl}-phenyl- (MH+), exp base H N~ phosphinic acid methyl 489 (MH+) P ~ I
F ester o s ~
\ {[4-(2-Amino-5-thiophen-3-yl-phenylcarbamoyl)- cal'd 493 ,TF.A
~ ~~ H phenyl]-hydroxy-methyl)- (MH+), exp ~ ,P ' ""Z phenyl-phosphinic acid 493 (MH+) Salt H ethyl ester o 01, {[4-(4-Amino-biphenyl-3- , 6 0 ~ N ylcarbamoyl)-phenyl]- cal d 487 TFA
N P ~ H hYdroxY-methY1}-PhenY1- (~+)' exp Salt o _ i NH2 ph osphinic acid ethyl ester 487 d0H

Procedures for H. Preparation of Alkyl Phosphine Oxides.
o z yP H HNU0 ~
O
I
I

5 {2-[4-(Diisopropyl-phosphinoylmethyl)-benzoylamino]-4-thiophen-2-yl-phenyl}-carbamic acid tert-butyl ester. To a solution of Hunig'sBase (1.451 mL, 8.31 mmol) and MeOH (0.332 mL, 8.21 mmol) in toluene (5 mL) at 0 C was added diisopropyl chlorophosphine (0.653 mL, 4.10 mmol) in toluene (2 mL) dropwise. The solution was allowed to warm to RT
and stirred for I h. The slurry was then filtered to remove the salt. To the filtrate was added [2-(4-bromomethyl-benzoylamino)-4-thiophen-2-yl-phenyl]-carbamic acid tert-butyl ester (500 mg, 1.026 mmol) and the mixture was stirred at 100 C for 2 h and then cooled to RT. Once at RT a precipitate formed, which was filtered off and washed with DCM yielding the desired product.
'H NMR (CDC13i 600MHz) S 9.86 (s, 1H), 8.73 (br s, 1H), 7.88 (d, J= 8.2 Hz, 2H), 7.79 (d, J=
2.0 Hz, 1 H), 7.57 (d, J= 8.5 Hz, IH), 7.51-7.46 (m, 4H), 7.43 (dd, J= 3.5, 1.2 Hz, IH), 7.10 (dd, J= 5.3, 3.8 Hz, IH), 3.22 (d, J 12.3 Hz, 2H), 1.93 (m, 2H), 1.08-0.98 (m, 6H).
MS: cal'd 541 (MH+), exp 541 (MH+).

Additional analogs were prepared in procedures similar to those described for the preparations of the above examples.

Table 9. H; Alkyl Phosphine Oxides Salt Cpd# Structure Name MS Form s s ~ N-(2-Amino-5-thiophen-2-yl-phenyl)-4- cal'd 441 1 I (diisopropyl- (MH+), Free P (~ H N H phosphinoylmethyl)- exp 441 base 2 benzamide s i N-(2-Amino-5-thiophen- , 2-yl-phenyl)-4-(diethyl- cal d 413 Free 2 H NH2 phosphinoylmethyl)- exp 41)3 base benzamide S N-(2-Amino-5-thiophen- cal'd 385 2-yl-phenyl)-4-(dimethyl- Free 3 \ ~ phosphinoylmethyl)- e(+85 base o H benzamide p S N-[2-Amino-5-(2- cal'd 413 thienyl)phenyl]-3- Free 4 O ~ [(diethylphosphoryl)meth (~+)' exp 413 base N I i yl]benzamide s i N-[2-amino-5-(2- cal'd 399 5 thienyl)phenyl]-4-[2- + Free H (dimethylphosphoryl)ethy e(xp 399 base P NHZ 1]benzamide g /
Ethyl- {2-[4-( { [2-amino-o 5-(2- cal'd 429 6 \ thienyl)phenyl]amino}car (MH+), baFree se ~ H bonyl)phenyl]ethyl}meth exp 429 ~O.P ' / NH2 yl phosphinate Procedures for I. Preparation of N-arylaminopyrazoles p N-N
~ /

NHBoc tert-butyl (3-amino-l-phenyl-lH-pyrazol-4-yl)carbamate Step A: Copper Coupling A solution of methyl 4-nitro-lH-pyrazole-3-carboxylate (54.0g, 315.6 nunol), phenylboronic acid (77.0g, 631.2 mmol), copper(II) acetate (86.0g, 473.4 mmol) and pyridine (49.9g, 631.2 mmol) in methylene chloride (600 mL) was stirred at ambient temperature open to air for 48 hours. The reaction was evaporated in vacuo, diluted with 1000mL methylene chloride and filtered through a large plug of silica (washing with 2 liters methylene chloride). The solvent was evaporated in vacuo. 'H NMR (CDC13) S 8.61 (s, 1H), 7.73 (m, 2H), 7.50 (m, 3H), 4.02 (s, 3H).
Step B: Saponification A solution of inethyl4-nitro-l-phenyl-lH-pyrazole-3-carboxylate (78.1 g, 315.9 mmol) in THF
(600 mL) was treated with 4M potassium hydroxide (79mL, 316 mmol) dropwise and the solution was stirred at ambient temperature for 16 hours. The reaction was evaporated in vacuo and acidified with 6M HCI. After addition of water (500 mL) the solids were filtered off and dried to give 72.lg (97%, 2 steps) of desired compound as a grayish solid. 'H
NMR (CD3OD) S
9.37 (bs, 1H), 7.88 (m, 2H), 7.59 (m, 2H), 7.44 (m, 1H).
Step C: Curtius A solution of 4-nitro-l-phenyl-lH-pyrazole-3-carboxylic acid (20.0g, 85.8 mmol), triethylamine (36.OmL, 257.3 mmol), and diphenylphosphoryl azide (37.8g, 137.2 mmol) in dioxane (400 mL) and tert-butanol (200 mL) was heated to reflux for 16 hours. The reaction was evaporated to dryness in vacuo, diluted with methylene chloride (400 mL) and treated with trifluoroacetic acid (128g, 857.7 mmol). The solution was stirred at ambient temperature for 16 hours. The reaction was evaporated in vacuo and the resulting oil diluted with hexanes (750 mL), ethyl acetate (150 mL) and methylene chloride (100 mL). The solids were filtered, washed with above solvent system (hexanes:ethyl acetate;methylene chloride 75:15:10), and dried to give 12.Og of desired product as yellow solid. 'H NMR (CDC13) 6 8.43 (s, 1H), 7.62 (m, 2H), 7.48 (m, 2H), 7.37 (m, IH).
Step D: Hydrogenation/Boc protection A solution of 4-nitro-l-phenyl-lH-pyrazol-3-amine (0.15g, 0.74 mmol), di-tertbutyl dicarbonate (0.16g, 0.74 mmol), triethylamine (0.19g, 1.84 mmol) in methano120 mL was degassed with nitrogen and treated with platinum oxide (17mg, 10 mol%). The solution was placed under a hydrogen atmosphere and stirred at ambient temperature for 2 hours. The reaction was then degassed with nitrogen, filtered through celite, washed with methanol and evaporated in vacuo.
Flash chromatography (20-35% ethyl acetate/hexanes) gave 0.109g (54%) of title compound as a purplish solid. 'H NMR (CDC13) 6 7.85 (s, 1H), 7.51 (m, 2H), 7.37 (m, 2H), 7.18 (m, 1H), 6.40 (bs, 1 H).

Procedures for J. Preparation of Spirocyclic Phosphonates COZEt BocN
1-tert-Butyl 4-ethyl piperidine-1,4-dicarboxylate. To a solution of ethyl isonipecotate (8.00 g, 50.9 mmol), Et3N (6.18 g, 61.1 mmol), and DMAP (622 mg, 5.09 mmol) in CH2C12 (100 mL) at 0 C was added Boc2O (16.66 g, 76.3 mmol). The reaction was stirred and allowed to warm to room temperature over 90 min. The solution was diluted with additional CH2Cl2, washed with saturated NaHCO3 and brine, dried (MgSO4), and evaporated. The residue was purified by flash chromatography (0-25% EtOAc/hexanes) to give 1-tert-butyl 4-ethyl piperidine-1,4-dicarboxylate as a colorless oil. tH NMR (CDCl3, 600 MHz) S 4.12 (q, J= 7.2 Hz, 2H), 4.08-3.88 (m, 214), 2.88-2.73 (m, 2H), 2.41 (tt, J= 10.9, 3.9 Hz, 1H), 1.89-1.81 (m, 2H), 1.64-1.56 (m, 2H), 1.43 (s, 9H), 1.23 (t, J = 7.2 Hz, 3H).

COZEt ~COZEt ~
1-tert-Butyl 4,4-diethyl piperidine-1,4,4-tricarboxylate. To a solution of'Pr2NH (4.72 g, 46.6 mmol) at -20 C in THF (70 mL) was added n-butyllithium (13.99 mL, 35.0 mml, 2.5 M in hexanes). After 15 minutes at -20 C, the solution was cooled to -78 C, and 1-tert-butyl 4-ethyl piperidine-1,4-dicarboxylate (6.00 g, 23.3 mmol) was added. After stirring at -78 C for 1 h, ethyl chloroformate (7.59 g, 70.0 mmol) was added dropwise. The reaction was then allowed to warm to room temperature over 4 h. The solution was diluted with 1 N HCl and extracted with EtOAc (2x). The combined organic extracts were washed with brine, dried (MgSO4), and evaporated. Flash chromatography of the crude (0-25% EtOAc/hexanes) yielded the desired product as a yellow oil. 'H NMR (CDC13, 600 MHz) S 4.18 (q, J= 7.1 Hz, 4H), 3.43-3.38 (m, 4H), 2.05-2.00 (m, 4H), 1.42 (s, 9H), 1.23 (t, J= 7.0 Hz, 6H). MS: cal'd 352 (MNa+), exp 352 (MNa+).

OH
OH
BoCN
tert-Butyl 4,4-bis(hydroxymethyl)piperidine-l-carboxylate. To a solution of 1-tert-butyl 4,4-diethyl piperidine-1,4,4-tricarboxylate (2.00 g, 6.07 mmol) in 1:1 THF:toluene (50 mL) was added LiBH4 (15.18 mL, 30.4 mmol, 2.0 M in THF). The reaction was stirred at 60 C for 18 h.
It was then quenched with saturated NH4C1 and extracted with EtOAc (2x). The combined organic layers were washed with brine, dried (MgSO4), and evaporated. The residue was purified by flash chromatography (15-100% EtOAc/hexanes) to give tert-butyl 4,4-bis(hydroxymethyl)piperidine-l-carboxylate as a colorless solid. 'H NMR
(CDC13, 600 MHz) S
3.66 (d, J= 5.0 Hz, 4H), 3.41-3.37 (m, 4H), 2.29 (t, J= 5.1 Hz, 2H), 1.47-1.45 (m, 4H), 1.45 (s, 9H). MS: cal'd 268 (MNa+), exp 268 (MNa+).

O.P
O
9ocN
tert-Butyl 3-methyl-2,4-dioxa-9-aza-3-phosphaspiro[5.5]undecane-9-carboxylate 3-oxide.
Et3N (943 L, 6.76 mmol) and tert-butyl 4,4-bis(hydroxymethyl)piperidine-l-carboxylate (790 mg, 3.22 mmol) were combined in CH2C12 (25 mL) and cooled to 0 C. A solution of methylphosphonic dichloride (428 mg, 3.22 mmol) in CHZC12 (20 mL) was added dropwise over 1 h. The reaction was then allowed to warm to room temperature over I h. It was subsequently diluted with saturated NaHCO3 and extracted with CH2ClZ (2x). The combined organic layers were washed with brine, dried (MgSO4), and evaporated to give the desired product as a colorless solid that was used without purification. MS: cal'd 306 (MH+), exp 306 (MH+).

O,P
O
HCI = HN

3-Methyl-2,4-dioxa-9-aza-3-phosphaspiro[5.5]undecane 3-oxide hydrochloride.
tert-Buty1 3-methyl-2,4-dioxa-9-aza-3-phosphaspiro[5.5]undecane-9-carboxylate 3-oxide (975 mg, 3.19 mmol) was combined with 4.0 M HCl in dioxane (25 mL) and stirred at room temperature for 1 h. The resulting suspension was evaporated to a white solid that was slurried in EtOAc and filtered to give 3-methyl-2,4-dioxa-9-aza-3-phosphaspiro[5.5]undecane 3-oxide hydrochloride as a colorless solid. 'H NMR (DMSO-d6, 600 MHz) 6 8.99 (bs, 2H), 4.21-4.11 (m, 4H), 3.12-3.07 (m, 2H), 3.04-2.99 (m, 2H), 1.82-1.78 (m, 2H), 1.59-1.56 (m, 2H), 1.55 (d, J=
17.0 Hz, 3H).
MS: cal'd 206 (MH+), exp 206 (MH+).

s C' o ) N
Ci N H NHBOC

tert-Butyl [2-{[(6-chloropyridin-3-yl)carbonyljamino}-4-(2-thienyl)phenyl]-carbamate. A
mixture of tert-butyl [2-amino-4-(2-thienyl)phenyl]carbamate (600 mg, 2.07 mmol) and 6-chloronicotinyl chloride (380 mg, 2.16 mmol) in 5 mL of pyridine was stirred overnight, poured into EtOAc and washed with saturated NaHCO3i dried (Na2SO4) and concentrated giving the BOC-protected chloronicotinamide. 'H NMR (600 MHz, CD3OD): S 8.95 (d, J= 2.3 Hz, IH), 8.35 (dd, J= 8.2 Hz, 2.3 Hz, 1H), 7.85 (br s, IH), 7.62 (d, J= 8.5 Hz, 1H), 7.55-7.51 (m, 2H), 7.37-7.35 (m, 2H), 7.07 (dd, J= 5.0 Hz, 3.5 Hz, 1H), 4.59 (s, IH), 1.49 (s, 9H). MS: cal'd 452 (MNa+), exp 452 (MNa+).

s ~
o ~~
~ N ~
~A I / H NHBoc Methyl 4-({ [2-[(tert-butoxycarbonyl)amino]-5-(2-thienyl)phenyljamino}
carbonyl)benzoate.
Methyl 4-(chlorocarbonyl)benzoate (1.40 g, 7.07 mmol) and tert-butyl [2-amino-4-(2-thienyl)phenyl]carbamate (2.05 g, 7.07 mmol) were combined in pyridine (10 mL) and stirred at room temperature for 18 h. The reaction mixture was poured into 3:1 CHC13:MeOH, washed with 2 N HCl and 2 N NaOH, dried (Na2SO4), and evaporated to give the desired product as a colorless solid. MS: cal'd 475 (MNa+), exp 475 (MNa+).

s /

0 / ' N ~
HO H NHBoc 4-({[2-[(tert-Butoxycarbonyl)amino]-5-(2-thienyl)phenyl]amino}carbonyl)benzoic acid. To a solution of inethyl4-({[2-[(tert-butoxycarbonyl)amino]-5-(2-thienyl)phenyl]amino}carbonyl) benzoate (3.20 g, 7.07 mmol) in 1:1:2 H20:MeOH:THF (80 mL) was added LiOH
(1.20 g, 50.1 mmol). The reaction was stirred at room temperature for 18 h, diluted with EtOAc, washed with 2 N HCI, dried (NaZSO4), and evaporated to give the desired product as a red solid. MS: cal'd 461 (MNa+), exp 461 (1VINa+).

s i o N
H NHz N N
o=P:O

N-[2-Amino-5-(2-th ienyl)phenyl]-6-(3-methyl-3-oxido-2,4-dioxa-9-aza-3-phosphaspi ro [5.5]
undec-9-yl)nicotinamide. tert-Butyl [2- {[(6-chloropyridin-3-yl)carbonyl]amino} -4-(2-thienyl)phenyl]-carbamate (150 mg, 0.35 mmol), 3-methyl-2,4-dioxa-9-aza-3-phosphaspiro[5.5]undecane 3-oxide hydrochloride (169 mg, 0.70 mmol), and DIEA
(183 L, 1.05 mmol) were combined in DMSO (4 mL) and stirred at 90 C for 24 h. The mixture was directly purified by reverse phase HPLC (35-90% MeCN/water w/ 0.025% TFA) to afford the desired product as a yellow solid. The solid was dissolved in a mixture of CHZC12 (4 mL) and TFA (1 mL) and stirred at room temperature for 2 h. The solution was diluted with 1,2-DCE and evaporated. The resulting residue was purified by reverse phase HPLC (10-70%
MeCN/water w/ 0.025% TFA). Fractions containing the product were diluted with saturated NaHCO3 and extracted with EtOAc (3x). The combined orga.nic layers were washed with brine, dried (MgSO4), and evaporated to give the desired product as a colorless solid. 'H
NMR (DMSO-d6, 600 MHz) S 9.48 (d, J= 3.3, 1 H), 8.72 (t, J= 2.7 Hz, 1 H), 8.08-8.05 (m, 1 H), 7.43 (d, J= 2.3 Hz, 1 H), 7.33 (dd, J= 4.9, 0.9 Hz, 1 H), 7.26 (dt, J= 8.4, 1.7 Hz, 1 H), 7.22 (dd, J= 3.6, 1.2 Hz, 1 H), 7.02 (dd, J= 5.0, 3.6 Hz, 1 H), 6.78 (d, J= 8.4 Hz, 1 H), 6.51 (dd, J=
8.9, 6.0 Hz, 1 H), 5.10 (s, 2H), 4.15-3.97 (m, 3H), 3.93-3.82 (m, IH), 3.62-3.50 (m, 3H), 3.36-3.28 (m, 1H), 2.06-1.98 (m, 1H), 1.93-1.80 (m, 3H), 1.50 (d, J= 17.4 Hz, 1.5H), 1.49 (d, J= 17.4 Hz, 1.5H). MS: cal'd 499 (MH+), exp 499 (MH+).

s ~
.o o ~
O N I~ H NH2 N-[2-Amino-5-(2-thienyl)phenyl]-4-[(3-methyl-3-oxido-2,4-dioxa-9-aza-3-phosphaspiro[5.5]
undec-9-yl)methyl]benzamide. [2-(4-Bromomethyl-benzoylamino)-4-thiophen-2-yl-phenyl]-carbamic acid tert-butyl ester (150 mg, 0.31 mmol), 3-methyl-2,4-dioxa-9-aza-3-phosphaspiro[5.5]undecane 3-oxide hydrochloride (89 mg, 0.37 mmol), and DIEA
(107 L, 0.62 mmol) were combined in DMF (4 mL) and stirred at room temperature for 18 h.
The solution was diluted with saturated NaHCO3 and extracted with EtOAc (2x). The combined organic layers were washed with brine, dried (MgSO4), and evaporated. Flash chromatography of the crude (0-10% MeOH/CH2C12) afforded the desired product as a colorless solid.
The solid was dissolved in a mixture of CH2C12 (4 mL) and TFA (1 mL) and stirred at room temperature for 2 h. The solution was diluted with 1,2-DCE and evaporated. The crude was taken up in EtOAc, washed with saturated NaHCO3 and brine, dried (MgSO4), and evaporated. The residue was triturated with EtOAc and filtered to afford the desired product as a colorless solid. 'H NMR
(DMSO-d6, 600 MHz) S 9.69 (s, 1 H), 7.94 (d, J= 7.6 Hz, 2H), 7.44 (s, 1 H), 7.41 (d, J= 7.8 Hz, 2H), 7.33 (d, J= 5.2 Hz, 1 H), 7.27 (d, J= 8.0 Hz, 1 H), 7.22 (d, J= 3.5 Hz, 1 H), 7.02 (t, J= 4.2 Hz, IH), 6.79 (d, J = 8.2 Hz, 1H), 5.13 (s, 2H), 4.16-4.04 (m, 4H), 3.54 (s, 2H), 2.43-2.37 (m, 2H), 2.34-2.28 (m, 2H), 1.68-1.62 (m, 2H), 1.52 (d, J= 17.0 Hz, 3H), 1.42-1.38 (m, 2H). MS:
cal'd 512 (MH+), exp 512 (MH+).

bo N H O
z N-[2-Amino-5-(2-thienyl)phenyl]-4-[(3-methyl-3-oxido-2,4-d ioxa-9-aza-3-phosphaspiro [5.5]
u ndec-9-yl)carbonyl] benzamide. 4-( {[2-[(tert-Butoxycarbonyl)amino]-5-(2-thienyl)phenyl]amino}carbonyl)-benzoic acid (150 mg, 0.34 mmol), 3-methyl-2,4-dioxa-9-aza-3-phosphaspiro[5.5]undecane 3-oxide hydrochloride (99 mg, 0.41 mmol), EDC (131 mg, 0.68 mmol), HOBT (105 mg, 0.68 mmol), and DIEA (119 L, 0.68 mmol) were combined in DMF (4 mL) and stirred at room temperature for 18 h. The solution was diluted with saturated NaHCO3 and extracted with EtOAc (2x). The combined organic extracts were washed with brine, dried (MgSO4), and evaporated. Purification of the crude by flash chromatography (0-10%
MeOH/CH2C12) afforded the desired product as a yellow solid. The solid was dissolved in a mixture of CH2Cl2 (4 mL) and TFA (1 mL) and stirred at room temperature for 2 h. The solution was diluted with 1,2-DCE and evaporated. The crude was taken up in EtOAc, washed with saturated NaHCO3 and brine, dried (MgSO4), and evaporated. The residue was dissolved in a minimum amount of MeOH, diluted with EtOAc, concentrated to approximately half-volume, and filtered to isolate the desired product as a colorless solid. 'H NMR (DMSO-d6, 600 MHz) 8 9.80 (s, 1 H), 8.04 (d, J= 7.3 Hz, 2H), 7.50 (d, J= 6.4 Hz, 2H), 7.45 (s, 1 H), 7.33 (d, J= 4.9 Hz, 1H), 7.28 (d, J= 8.1 Hz, IH), 7.22 (bs, 1 H), 7.03 (t, J= 3.9 Hz, IH), 6.79 (d, J= 8.3 Hz, 1H), 5.17 (s, 2H), 4.29-4.09 (m, 4H), 3.72-3.56 (m, 2H), 3.39-3.23 (m, 2H), 1.77-1.60 (m, 2H), 1.58-1.51 (m, 3H), 1.51-1.36 (m, 2H). MS: cal'd 526 (1V1H+), exp 526 (MH+).

Addition4l analogs were prepared in procedures similar to those described for the preparations of the above examples.

Table 11. J; S iroc clic Phosphonates Cpd# Structure Name MS Salt Form:
s ~ 1V-[2-Amino-5-(2-thienyl)phenyl]-4-[(3-methyl-3- cal'd 512 Free 1 ;P"o 0 ~ oxido-2,4-dioxa-9-aza-3- (MH+), exp o ~ N~ phosphaspiro[5.5]undec-9= 512 base N H NHZ yl)methyl]benzamide s ~ IV-[2-Amino-5-(2-o o thienyl)phenyl]-4-[(3-methyl-3- cal'd 526 Free 2 -b" I oxido-2,4-dioxa-9-aza-3- (MH+), exp H phosphaspiro[5.5]undec-9- 526 base N ~ NH2 yl)carbonyl]benzamide z N-[2-Amino-5-(2-thienyl)phenyl]-6-(3-methyl-3- cal'd 499 Free 3 ~~ H oxido-2,4-dioxa-9-aza-3- (MH+), exp base N N NH2 phosphaspiro[5.5]undec-9- 499 o yl)nicotinamide Oep, S / .

/

~ N-[2-amino-5-(2-N I~ H~ thienyl)phenyl]-6-{2- cal'd 568 TFA
N
4 N N NH2 [bis(dimethylamino)phosphoryl]- (MH+), exp Salt 2,8 -diazaspiro[4.5]dec-8- 568 yl}nicotinamide /
Oz~
rN
N\ \

Procedures for K. Preparation of (3-Aminophosphine Oxides Phenyl(divinyl)phosphine oxide. Phenylphosphonic dichloride (2.00 g, 10.26 mmol) was taken up in 1:1 THF:Et20 (100 mL) and cooled to -78 C. Vinylmagnesium bromide (21.54 mL, 21.54 mmol, 1.0 M in TIiF) was added dropwise. After stirring for 2 h at -78 C, the cold reaction was poured into 2 N HC1, and the mixture was extracted with EtOAc (2x). The combined organic extracts were washed with brine, dried (MgSO4), and evaporated to a yellow oil. Flash chromatography (0-10% MeOH/EtOAc) afforded phenyl(divinyl)phosphine oxide as a colorless solid. 'H NMR (CDC13i 600 MHz) 8 7.72-7.67 (m, 2H), 7.54-7.50 (m, 1H), 7.49-7.45 (m, 2H), 6.44 (ddd, J = 24.5, 18.7, 12.4 Hz, 2H), 6.29-6.18 (m, 4H). MS: cal'd 179 (MH+), exp 179 (MH+).

Ethyl(divinyl)phosphine oxide. A solution of ethyldichlorophosphine (1.00 g, 7.64 mmol) in THF (30 mL) was cooled to -78 C. Vinylmagnesium bromide (16.04 mL, 16.04 mmol, 1.0 M
in THF) was added dropwise. The reaction was allowed to warm to room temperature and stirred for 2 h. It was then quenched with saturated NH4C1 and extracted with CH2C12 (2x). The combined organic extracts were dried (MgSO4) and gently concentrated to half-volume. This solution was combined with 30% H202 (30.00 mL, 343 mmol) and vigorously stirred at room temperature for 60 h. The mixture was extracted with CH2C1Z (2x), dried (MgSO4), and evaporated. Flash chromatography of the crude (0-10% MeOH/EtOAc) afforded ethyl(divinyl)phosphine oxide as a colorless solid. 'H NMR (CDC13i 600 MHz) S
6.29-6.11 (m, 6H), 1.77 (dq, J= 12.5, 7.6 Hz, 2H), 1.13 (dt, J= 17.7, 7.6 Hz, 3H).

i ~
~p ~
NJ
1-Benzyl-4-phenyl-1,4-azaphosphinane 4-oxide. Phenyl(divinyl)phosphine oxide (1.47 g, 8.25 mmol) and benzylamine (901 L, 8.25 mmol) were combined in water (20 mL) and stirred at 90 C for I h. A second portion of benzylamine (901 mL, 8.25 mmol) was added, and the reaction was stirred at 90 C for an additional 1 h. The solution was cooled and extracted with EtOAc (2x). The combined organic extracts were washed with brine, dried (MgSO4), and evaporated.
The crude residue was purified by flash chromatography (0-10% MeOH/CH2C12) to afford the desired product as a colorless solid. 'H NMR (CDC13, 600 MHz) S 7.79-7.73 (m, 2H), 7.55-7.46 (m, 3H), 7.35-7.30 (m, 4H), 7.27-7.23 (m, 1H), 3.63 (m, 2H), 3.04-2.89 (m, 4H), 2.21-2.14 (m, 2H), 2.08-1.99 (m, 2H). MS: cal'd 286 (MH+), exp 286 (MH+).

'oOI
P
HCI=HNJ
4-Phenyl-1,4-azaphosphinane 4-oxide hydrochloride. A mixture of 1-benzyl-4-phenyl-1,4-azaphosphinane 4-oxide (1.18 g, 4.14 mmol), 20% Pd(OH)2/C (290 mg, 0.41 mmol), and concentrated HCl (0.75 mL) in MeOH (75 mL) was hydrogenated at 45 psi for 18 h. The mixture was filtered through Celite and evaporated. The solid residue was slurried in EtOAc and filtered to give the title compound as an off-white solid. 'H NMR (DMSO-d6, 600 MHz) S 9.87 (bs, 1H), 9.28 (bs, 1H), 7.86-7.79 (m, 2H), 7.66-7.61 (m, 1H), 7.60-7.56 (m, 2H), 3.52-3.34 (m, 4H), 2.75-2.65 (m, 2H), 2.24-2.13 (m, 2H). MS: cal'd 196 (MH+), exp 196 (MH+).

~P

Diisopropyl(vinyl)phosphine oxide. Chlorodiisopropylphosphine (6.00 g, 39.3 mmol) was dissolved in THF (150 mL) and cooled to -78 C. Vinylmagnesium bromide (1 M in THF, 43.2 mL, 43.2 mmol) was added dropwise. The dry ice bath was then removed, and the reaction was allowed to warm to room temperature. After 2 h at room temperature, the reaction was quenched with saturated NH4CI, and 30% H202 (75 mL) was added. The mixture was vigorously stirred at room temperature for 2 h. It was then extracted with CH2C12 (2x), dried (MgSO4), and evaporated. Flash chromatography (0-10% MeOH/EtOAc) afforded diisopropyl(vinyl) phosphine oxide as a colorless oil. 'H NMR (CDC13, 600 MHz) S 6.31 (td, J=
18.6, 2.2 Hz, 1 H), 6.24 (ddd, J= 34.8, 12.8, 2.3 Hz, 1 H), 6.03 (ddd, J= 27.3, 18.7, 12.8 Hz, 1 H), 2.01-1.92 (m, 2H), 1.15 (dd, J= 15.0, 7.0 Hz, 6H), 1.06 (dd, J=15.9, 7.4 Hz, 6H). MS:
cal'd 161 (MH+), exp 161 (MH+).

'p'^

N-Benzyl-2-(diisopropylphosphoryl)-N-methylethanamine.
Diisopropyl(vinyl)phosphine oxide (1.00 g, 6.24 mmol) was combined with 1V-methylbenzylamine (1.61 mL, 12:48 mmol) in a microwave vial and heated at 200 C for 4 h total (reaction progress checked after 2 h). The crude mixture was directly purified by flash chromatography (0-10%
MeOH/CH2C12). Coelution of the product with minor impurities required a second column (0-10% MeOH (w/

NH3)/CH2C12) to give clean product as a yellow oil. 'H NMR (CDC13i 600 MHz) 8 7.30-7.20 (m, 5H), 3.50 (s, 2H), 2.76-2.70 (m, 2H), 2.20 (s, 3H), 2.00-1.92 (m, 2H), 1.90-1.84 (m, 2H), 1.17 (dd, J= 14.6, 7.2 Hz, 6H), 1.12 (dd, J= 15.1, 7.1 Hz, 6H). MS: cal'd 282 (MH+), exp 282 (MH+).

P
O~1 >rO ~ ~ ~ .
O
tert-Butyl [2-(diisopropylphosphoryl)ethyl](4-methoxybenzyl)carbamate. To a suspension of NaH (60%, 157 mg, 3.93 mmol) in THF (5 mL) at 0 C was added tert-butyl (4-methoxybenzyl)carbamate (889 mg, 3.75 mmol) in THF (5 mL). After stirring for 30 minutes at 0 C, diisopropyl(vinyl)phosphine oxide (300 mg, 1.873 mmol) in THF (3 mL) was added. The reaction was allowed to slowly warm to room temperature and subsequently heated to 60 C for 3 h. The mixture was quenched with saturated NH4CI and extracted with EtOAc (2x). The combined organic layers were washed with brine, dried (MgSO4), and evaporated.
Flash chromatography (0-10% MeOH/EtOAc) afforded the title compound as a pale yellow oil. MS:
cal'd 398 (1vIH+), exp 398 (1VII-I+).

~P~
HNUO~
IOI
tert-Butyl [2-(diisopropylphosphoryl)ethyl]carbamate. A solution of tert-butyl [2-(diisopropylphosphoryl)ethyl](4-methoxybenzyl)carbamate (1.06 g, 2.68 mmol) in MeCN (20 mL) was cooled to 0 C. CAN (4.40 g, 8.03 mmol) in water (10 mL) was added dropwise via addition funnel over 15 minutes, and the reaction was subsequently stirred at 0 C for an additional 1 h. The solution was then diluted with water and extracted with EtOAc (4x). The combined organic layers were washed with 10% Na2SO3 (2x). The sodium sulfite layers were then back-extracted with additional EtOAc (2x). All of the organic extracts were combined, dried (MgSO4), and evaporated. Flash chromatography (0-10% MeOH/CH2C12) afforded tert-butyl [2-(diisopropylphosphoryl)ethyl]carbamate as a colorless solid. 'H NMR
(CDC13, 600 MHz) S 5.59 (bs, IH), 3.50-3.42 (dt, J= 13.0, 6.5 Hz, 2H), 2.01-1.92 (m, 2H), 1.88-1.83 (m, 2H), 1.39 (s, 9H), 1.18 (dd, J= 14.9, 7.2 Hz, 6H), 1.14 (dd, J= 15.3, 7.2 Hz, 6H). MS: cal'd 278 (MH+), exp 278 (MH+).

p NHZ = HCI
2-(diisopropylphosphoryl)ethanaminehydrochloride. tert-Butyl [2-(diisopropylphosphoryl) ethyl]carbamate (585 mg, 2.11 mmol) was combined with 4.0 M HCl in 1,4-dioxane (10.0 mL, 40.0 mmol) and stirred at room temperature for 30 minutes. The solution was evaporated to dryness to afford 2-(diisopropylphosphoryl)ethanamine hydrochloride as a colorless solid. 'H
NMR (DMSO-d6, 600 MHz) S 8.23 (bs, 3H), 2.99-2.90 (m, 2H), 2.08-1.93 (m, 4H), 1.05 (dd, J
14.7, 7.2 Hz, 6H), 1.03 (dd, J= 15.2, 7.0 Hz, 6H). MS: cal'd 178 (MH+), exp 178 (MH+).

o o1j<
J

tert-B u ty14-[ 2-(4-oxido-4-ph en yl-1,4-azaph osph in an-1-yl)ethyl]
benzoate. 4-Phenyl-1,4-azaphosphinane 4-oxide hydrochloride (200 mg, 0.863 mmol), tert-butyl 4-(2-bromoethyl)benzoate (246 mg, 0.863 mmol), and K2C03 (358 mg, 2.59 mmol) were combined in MeCN (10 mL) and stirred at reflux overnight. The reaction was cooled, diluted with EtOAc, washed with water and brine, dried (MgSO4), and evaporated. Flash chromatography (0-10%

MeOH/CH2C12) afforded'the title compound as a colorless solid. 'H NMR (CDC13, 600 MHz) 8 7.88 (d, J= 8.4 Hz, 2H), 7.76-7.71 (m, 2H), 7.54-7.45 (m, 3H), 7.21 (d, J=
8.2 Hz, 2H), 3.09-2.99 (m, 4H), 2.85-2.80 (m, 2H), 2.77-2.73 (m, 2H), 2.19-2.11 (m, 2H), 2.08-1.98 (m, 2H), 1.55 (s, 9H). MS: cal'd 400 (MH+), exp 400 (MH+).

I ~ oH
\ J

4-[2-(4-Oxido-4-phenyl-1,4-azaphosphinan-1-yl)ethyl]benzoicacid. tert-Butyl 4-[2-(4-oxido-4-phenyl-1,4-azaphosphinan-1-yl)ethyl]benzoate (215 mg, 0.538 mmol) was taken up in 4.0 M
HCl in 1,4-dioxane (8.0 mL, 32.0 mmol) and stirred at room temperature ovemight. The white slurry was concentrated to dryness, resuspended in MeOH, and concentrated again to afford the title compound as a colorless solid. MS: cal'd 344 (MH+), exp 344 (MH+).

I~
~

~ N
~P^~N I / H NHBoc O
tert-Butyl(3-{ 14-({ [2-(dimethylphosphoryl)ethyl] a mino} methyl)benzoyl]
amino} biph enyl-4-yl)carbamate. 2-(Dimethylphosphoryl)ethanamine hydrochloride (393 mg, 2.493 mmol), tert-butyl (3-{[4-(bromomethyl)benzoyl]amino}biphenyl-4-yl)carbamate (400 mg, 0.831 mmol), and DIEA (581 l, 3.32 mmol) were combined in DMF (8 mL) and water (0.50 mL) and stirred at 60 C overnight. The solution was diluted with saturated NaHCO3 and extracted with EtOAc (4x).
The combined organics were dried (MgSO4), evaporated, and purified by reverse phase HPLC
(25-95% MeCN/water w/ 0.025% TFA). Product fractions were neutralized with saturated NaHCO3, extracted with EtOAc (2x), dried (MgSO4), and evaporated to give a colorless solid.
MS: cal'd 522 (MH+), exp 522 (MH+).

I~
~
o oo N ZZI.
N I / H NHZ
O

Methyl (4-{((4-aminobiphenyl-3-yl)amino)carbonyl}benzyl)[2-(dimethylphosphoryl)ethyl]
carbamate. To a solution of tert-butyl (3-{[4-({[2-(dimethylphosphoryl)ethyl]amino}
methyl)benzoyl] amino}biphenyl-4-yl)carbamate (295 mg, 0.566 mmol) in CH2C12 (10 mL) were added DIEA (198 l, 1.13 mmol) and methyl chloroformate (70 mg, 0.735 mmol). After stirring for 30 min at room temperature, the reaction was diluted with CHZCIZ
and washed with saturated NaHCO3. The aqueous layer was extracted with additional CHZCI2. The combined organic layers were washed with brine, dried (MgSO4), and evaporated. Flash chromatography (0-10% MeOH/CH2Cl2) afforded a colorless solid. This solid was was taken up in CH2C12 (5 mL) and TFA (1 mL). After stirring at room temperature for 1 h, the solution was diluted with 1,2-DCE and concentrated. The residue was diluted with EtOAc, washed with saturated NaHCO3 and brine, dried (MgSO4), and evaporated to afford the title compound as a pale yellow solid. NMR (DMSO-d6, 600 MHz) S 9.70 (bs, 1H), 7.96 (d, J= 8.1 Hz, 2H), 7.54-7.50 (m, 2H), 7.50-7.48 (m, 1 H), 7.37-7.32 (m, 4H), 7.29 (dd, J= 8.2, 2.1 Hz, 1 H), 7.20 (t, J= 7.4 Hz, IH), 6.83 (d, J= 8.5 Hz, 1H), 5.07 (bs, 2H), 4.52 (s, 2H), 3.69-3.57 (m, 3H), 3.45-3.34 (m, 2H), 1.99-1.87 (m, 2H), 1.34 (d, J= 12.9 Hz, 6H). MS: cal'd 480 (MH+), exp 480 (MH+).

~1o I ~
o ~

Dimethyl [4-(tert-butoxycarbonyl)phenyl]malonate. Dimethyl malonate (4.24 g, 32.1 mmol), K3P04 (18.57 g, 88.0 mmol), and tert-butyl-4-bromobenzoate (7.50 g, 29.2 mmol) were placed in a dry 500 mL flask under N2. Bis(tri-t-butylphosphine)palladium(0) (745 mg, 1.46 mmol) and toluene (100 mL) were added, and the slurry was degassed with N2 for 20 minutes. The reaction was subsequently stirred at 80 C ovemight. The slurry was cooled, diluted with water, and extracted with EtOAc (2x). The combined organic layers were washed with brine, dried (MgSO4), and evaporated. Flash chromatography (0-25% EtOAc/hexanes) afforded dimethyl [4-(tert-butoxycarbonyl)phenyl]malonate as a colorless solid. 'H NMR (CDC13, 600 MHz) S 7.96 (d, J= 8.5 Hz, 2H), 7.43 (d, J= 8.4 Hz, 2H), 4.68 (s, 1 H), 3.73 (s, 6H), 1.56 (s, 9H). MS: cal'd 331 (MNa+), exp 331 (NINa+).

o I o HO ~

(4-(tert-Butoxycarbonyl)phenyl]acetic acid. Dimethyl [4-(tert-butoxycarbonyl)phenyl]
malonate (4.00 g, 13.0 mmol) was taken up in THF (30 mL) and MeOH (10 mL) under N2.
NaOH (2 M, 19.5 mL, 39.0 mmol) was added, and the reaction was stirred at room temperature for 45 min. The solution was quenched with 1 M citric acid and extracted with EtOAc (2x). The combined organic extracts were washed with water and brine, dried (MgSO4), and evaporated.
The resulting yellow oil was dissolved in 1:1 EtOAc:water (100 mL) and stirred at 85 C for 2 h.
The mixture was diluted with I M citric acid and extracted with EtOAc. The organic layer was washed with water and brine, dried (MgSO4), and evaporated to give [4-(tert-Butoxycarbonyl)phenyl]acetic acid as a tan solid. 'H NMR (DMSO-d6, 600 MHz) S
12.42 (bs, IH), 7.82 (d, J= 8.3 Hz, 2H), 7.35 (d, J= 8.3 Hz, 2H), 3.64 (s, 2H), 1.51 (s, 9H). MS: cal'd 259 (MNa+), exp 259 (MNa+).

tert-Butyl 4-[2-(4-ethyl-4-oxido-1,4-azaphosphinan-1-yl)-2-oxoethyl]benzoate.
4-Ethyl-1,4-azaphosphinane 4-oxide hydrochloride (233 mg, 1.27 mmol), [4-(tert-butoxycarbonyl)phenyl]acetic acid (200 mg, 0.847 mmol), EDC (325 mg, 1.69 mmol), HOBT
(259 mg, 1.69 mmol), and DIEA (296 l, 1.69 mmol) were combined in DMF (4 mL) and stirred at room temperature overnight. The solution was diluted with saturated NaHCO3 and extracted with EtOAc (2x). The combined organic layers were washed with brine, dried (MgSO4), and evaporated. Flash chromatography (0-10% MeOH/CH2C12) afforded the title compound as a colorless oil. MS: cal'd 366 (MH+), exp 366 (MH+).

O OH
N
p 4-[2-(4-Ethyl-4-oxido-1,4-azaphosphinan-1-yl)-2-oxoethyl] benzoic acid. tert-Butyl 4-[2-(4-ethyl-4-oxido-1,4-azaphosphinan-1-yl)-2-oxoethyl]benzoate (270 mg, 0.739 mmol) was dissolved in CH2C12 (8 mL) and TFA (2 mL) and stirred at room temperature for 2 h. The solution was concentrated to dryness, redissolved in MeOH, and concentrated again to give the product as a colorless gum that was carried on without purification. MS: cal'd 310 (MH+), exp 310 (MH+).

Additional analogs were prepared in procedures similar to those described for the preparations of the above examples.

Table 12. K; 3-Amino ho hine Oxides Cpd# Structure Name MS Salt Forms s 1V-[2-Amino-5-(2-1 o thienyl)phenyl]-4-[(4-oxido- cal'd 502 Free o 4-phenyl-l,4-azaphosphinan- ~ 02 p base ~ I~ H NH2 1-yl)methyl]benzamide z 1V-[2-Amino-5-(2- cal'd 516 thienyl)phenyl]-4-[(4-oxido- + Free 2 P~ H 4-phenyl-1,4-azaphosphinan- (~51)6 exp base L,,N NH2 1-yl)carbonyl]benzamide s ~
1V-[2-Amino-5-(2-cal'd 489 3 thienyl)phenyl]-6-(4-oxido-4- +)ex Free I~ H NHZ phenyl-1,4-azaphosphinan-l- ~' p base N N yl)nicotinamide 489 I ~ o s ~ N-[2-Amino-5-(2-4 o thienyl)phenyl]-4-[(4-ethyl-4- cal'd 454 Free o ~ oxido-1,4-azaphosphinan-l- ~ 454exp base P~N H NHZ yl)methyl]benzamide z N-[2-Amino-5-(2- cal'd 468 5 o thienyl)phenyl]-4-[(4-ethyl-4- (~+)~ exp Free P~ N oxido-1,4-azaphosphinan-l- base ~N ~/ H NHZ yl)carbonyl]benzamide 468 N-[2-Amino-5-(2- , 6 \ ~ I thienyl)phenyl]-6-(4-ethyl-4- cal d 44X Free I~ H NH2 oxido-1,4-azaphosphinan-l- ~ i p base ~N N yl)nicotinamide N-(4-aminobiphenyl-3-yl)-4-7 [(4-oxido-4-phenyl-1,4- cal'd 4eX Free o azaphosphinan-l- ~ 496 p base P~ \ H yl)methyl]benzamide ~ NH
z ~ s IV-[2-amino-5-(2-o thienyl)phenyl]-4-[2-(4- cal'd 516 Free 8 ~ N oxido-4-phenyl-1,4- (NIIi+), exp I~ H NH2 azaphosphinan-l- 516 base yl)ethyl]benzamide ~ s N-[2-amino-5-(2- , thienyl)phenyl]-4-[2-(4-ethyl- cal d 468 Free 9 ~~ H 4-oxido-1,4-azaphosphinan- (~+)' exp base ~N NH2 1-yl)ethyl]benzamide 468 ~ s 1V-[2-amino-5-(2-o thienyl)phenyl]-4-[2-(4- cal'd 530 Free 1.0 0 N oxido-4-phenyl-1,4- (MH+), exp H NH2 azaphosphinan-l-yl)-2- 530 base J oxoethyl]benzamide s N-[2-amino-5-(2- , thienyl)phenyl]-4-[2-(4-ethyl- cal d 482 Free 11 H 4-oxido-1,4-azaphosphinan- (~+)' exp base rN NH2 1-yl)-2-oxoethyl]benzamide 482 ~PJ

~ s 1V-[2-amino-5-(2-~ thienyl)phenyl]-4-{[[2- cal'd 442 Free 12 N~ I (dimethylphosphoryl)ethyl] (MH+), exp base N H NH2 (methyl)amino] 442 methyl)benzamide s 1V-[2-amino-5-(2-0 thienyl)phenyl]-4-{[[2- cal'd 498 Free 13 (diisopropylphosphoryl) (M]H+), exp base j o N H NHZ ethyl](methyl) 498 P~~ amino]methyl) benzamide ~ s N-j2-amino-5-(2-I thienyl)phenyl]-4-{[[2- cal'd 566 14 NH (diphenylphosphoryl) (NIII+), exp baFree se 2 ethyl](methyl)amino] 566 ,~11 ethyl } benzamide s 1V (2-amino-5-(2-thienyl)phenyl]-6-[(2- cal'd 429 Free 15 I I (dimethylphosphoryl) (MH+), exp base &Ck H NHz ethyl](methyl)amino] 429 N N nicotinamide ~ s N-[2-amino-5-(2-thienyl)phenyl]-6-[[2- cal'd 485 Free 16 (diisopropylphosphoryl) (MH+), exp base k- H ethyl](methyl)amino] 485 YP-`~N N NH2 nicotinamide ~ S 1V-[2-amino-5-(2-thienyl)phenyl]-6-[[2- cal'd 553 Free 17 N ~ (diphenylphosphoryl) (MH+), exp 0 ethyl](methyl)amino] 553 base P J H NHZ
\ I N
~ nicotinamide ~ s IV'-[2-amino-5-(2- cal'd 456 18 thienyl)phenyl]-IV-[2- + Free H (dimethylphosphoryl)ethylJ- (~ 5~ exp base --PN NH2 IV-methylterephthalamide ~ S 1V'-[2-amino-5-(2-thienyl)phenyl]-N-[2- cal'd 512 19 ~ (diisopropylphosphoryl) (~+), exp Free P^~N H H2 ethyl]-N- 512 base methylterephthalamide ~ s 0 N-[2-arnino-5-(2- cal'd 580 thienyl)phenyl]-IV-[2- Free 20 g N H NH (diphenylphosphoryl)ethylJ- ~H+)' exp base PZ N-methylterephthalamide 580 a ~ s N-[2-amino-5-(2- cal'd 471 21 0 thienyl)phenyl]-6- {[2- ex Free N (diisopropylphosphoryl) 471 p base P\^ H NH2 ethyl]amino}nicotinamide O H N

s N-[2-amino-5-(2- cal'd 498 0 thienyl)phenyl]-N-[2- Free ~ (MH+), eXP
~ 498 N (diisopropylphosphoryl) base I H
PN NH2 ethyl]terephthalamide ~ S IV-[2-amino-5-(2-o thienyl)phenyl]-4-( { [2- cal'd 484 Free 23 ~ N ~ (diisopropylphosphoryl) (MH+), eXp base N I~ H NHZ ethyl]amino}methyl) 484 P benzamide ~ s N-[2-amino-5-(2- cal'd 442 24 0 thienyl)phenyl]-N-[2- (+ exp Free H\ (dimethylphosphoryl)ethyl] ~ 42 base P^N NH2 terephthalamide ~ s 1V-[2-amino-5-(2-thienyl)phenyl]-4-({[2- cal'd 428 25 o (dimethylphosphoryl) (MH+), e Free \ N xp base H ^~N H NHZ ethyl]amino}methyl) 428 P benzamide methyl (4-{[(4-aminobiphenyl-3- cal'd 480 Free 26 0 0 0 yl)amino]carbonyl}benzyl)[2- (MH+), exp base ~ H NH2 (dimethylphosphoryl)ethyl] 480 P carbamate O

Procedures for L. Preparation of Phosphopiyeridines -,,~0. ~O
N

Diethyl pyridin-4-ylphosphonate. 4-$romopyridine hydrochloride (8 g, 41.1 mmol), dietllyl phosphite (8.23 mL, 63.8 mmol), tetrakis(triphenylphosphine)palladium(0) (1.189 g, 1.029 mmol) and TEA (17.20 mL, 123 mmol) were stirred in refluxing toluene (160 mL) overnight.
Room temperature was attained, water was added and the organic layer separated. The aqueous phase was extracted with EtOAc (x2). The combined organic extracts were washed with brine, dried over MgSO4 and concentrated in vacuo. Purification of the residue by MPLC (EtOAc) gave diethyl pyridin-4-ylphosphonate as a pale yellow oil. 'H NMR (DMSO-d6, 600 MHz) S
8.75 (m, 2H), 7.61 (m, 2H), 4.03 (m, 4H), 1.21 (t, J= 7.2 Hz, 6H). MS: cal'd 216 (MH+), exp 216 (MH+).

`
Oo N
HZ' cl' Diethyl piperidin-4-ylphosphonate hydrochloride. Diethyl pyridin-4-ylphosphonate (3.8 g, 17.66 mmol) and palladium hydroxide on carbon (1.240 g, 1.766 mmol) were taken up in MeOH
(90 mL)/HCI (10 mL, 20.00 mmol). The suspension was agitated under H2 @ 40-50 psi for 7 days. The catalyst was removed by filtration and the filtrate concentrated in vacuo to give diethyl piperidin-4-ylphosphonate hydrochloride as a green gum. 'H NMR (DMSO-d6, 600 MHz) S 9.26 (br s, 1 H), 8.84 (br s, 1 H), 3.96 (m, 4H), 3.20 (m, 2H), 2.80 (m, 2H), 2.10 (m, 1 H), 1.84 (m, 2H), 1.68 (m, 2H), 1.19 (t, J= 7.2 Hz, 6H). MS: cal'd 222 (MH+), exp 222 (MH+).

Additional analogs were prepared in procedures similar to those described for the preparations of the above examples.

Table 13. L; Phos ho i eridines Cpd# Structure Name MS Salt Forms s o diethyl { 1-[5-( {[2-amino-5-(2- cal'd 515 N~ thienyl)phenyl]amino}carbony +, ex Free 1 ~
H N~ 1)pyridin-2-yl]piperidin-4- (~ 15 p base N N yl}phosphonate /-0 P\0- 151 -s~.
diethyl (1-{[4-({[2-amino-5- cal'd 528 2 qP o 0 (2-thienyl)phenyl] amino) (~+) exp Free ~o- - ~ H~ carbonyl)phenyl]methyl} 528 base N Nt~ piperidin-4-yl)phosphonate ~o o diethyl (1-{[4-({[2-amino-5- cal'd 542 pv (2-thienyl)phenyl]amino} + Free 3 ~~- N ~~ H ~ carbonyl)phenyl]carbonyl) (~ 42 exp base Z
piperidin-4-yl)phosphonate Procedures for M. Preparation of Alkyloxy Phosphonates/Phosphinates/Phosphates s /

O
\ N

( / H HN O

0 0 ~
N-(2-tert-Butoxycarbonylamino-5-thiophen-2-yl-phenyl)-terephthalamic acid methyl ester.
Methyl 4-(chlorocarbonyl)benzoate (0.75 g, 3.79 mmol) and anhydrous DCM (0.25 *M) was treated with tert-butyl 2-amino-4-thien-2-ylphenylcarbamate (1.0 g, 3.44 mmol). The resulting solution was stirred at ambient temperature for 14 hours. The reaction mixture was quenched with a solution of aqueous NaOH (1M) and partitioned between ethyl acetate and water. The organic layer was washed with water, saturated aqueous sodium bicarbonate, brine, dried over anhydrous magnesium sulfate and then concentrated in vacuo. The residue was carried on without further purification.

z O N HO H HNU
I O~
D
' [2-(4-Hydroxymethyl-benzoylamino)-4-thiophen-2-yl-phenylJ-carbamic acid tert-butyl ester. A solution of methyl 4-[({2-[(tert-butoxycarbonyl)anzino]-5-thien-2-ylphenyl}amino)carbonyl] benzoate (743 mg, 1.64 mmol) and anhydrous THF (0.10 M) was cooled to 0 C and a solution of LiBH4 (5.49 mL, 11.0 nunol, 2M in THF) was added dropwise.

The resulting solution was allowed to slowly warm to ambient temperature over 14 hours. The reaction was then cooled to 0 C and quenched with saturated aqueous ammonium cloride. The mixture was diluted with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over anhydrous magnesium sulfate and concentrated in vacuo. The residue was purified by MPLC (Si02, 10-80% EtOAc in hexanes) to afford a white glass: 'H-NMR (600mHz, DMSO-d6) S 9.87 (s, 1H), 8.73 (s, IH), 7.92 (d, J= 9.2 Hz, 2H), 7.81 (d, J= 2.1 Hz, 1 H), 7.5 8-7.42 (m, 5H), 7.11 (d, J= 3.5 Hz, 1 H), 7.10 (d, J=
3.5 Hz, 1 H), 5.34 (t, J= 5.9 Hz, 1 H), 4.57 (d, J= 5.6 Hz, 2H), 1.43 (s, 9H).

S /
O

N
P~O I / H HNUO
O IOI

[4({[2-(( [(1,1-dimethylethyl)oxy]carbonyl) amino)-5-(2-thienyl)phenyl]amino}carbonyl) phenyl]methyl dimethylphosphinate. 1,1-dimethylethyl [2-( {[4-(hydroxymethyl)phenyl]
carbonyl) amino)-4-(2-thienyl)phenyl]carbamate (650 mg, 1.531 mmol), BOP (1016 mg, 2.297 mmol), dimethylphosphinic acid (216 mg, 2.297 mmol), DMAP (10 mg, 0.082 mmol) and DIPEA (0.401 mL, 2.297 mmol) were stirred in DMF (8 mL) at room temperature overnight.
Additional BOP (2370 mg, 5.36 mmol), DIPEA (0.936 mL, 5.36 mmol), dimethylphosphinic acid (504 mg, 5.36 mmol) and DMAP (20 mg, 0.164 mmol) were added and stirring continued for 24 hours. Additional BOP (1016 mg, 2.297 mmol), DIPEA (0.401 mL, 2.297 mmol) and dimethylphosphinic acid (216 mg, 2.297 mmol) were added and stirring continued for 6 hours.
Saturated NaHCO3 was added and the products extracted into EtOAc (x2). The combined organic extracts were dried over MgSO4 and concentrated in vacuo. Purification of the residue by MPLC (0-20% MeOH-EtOAc) gave [4-({[2-({[(1,1-dimethylethyi)oxy]carbonyl}amino)-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]methyl dimethylphosphinate as a yellow gum. 'H-NMR (600mHz, DMSO-d6) S 9.90 (s, 1H), 8.72 (s, 1H), 7.96 (d, J= 8.4 Hz, 2H), 7.90 (d, J=
2.4 Hz, 1 H), 7.58 (d, 7= 8.4 Hz, 1 H), 7.53 (d, J= 8.4 Hz, 2H), 7.49 (m, 2H), 7.43 (dd, J= 3.6 and 1.2 Hz, 1 H), 7.10 (dd, J= 4.8 and 3.6 Hz, 1 H), 5.02 (d, J= 8.4 Hz, 2H), 1.46 (d, J= 13.8 Hz, 6H), 1.42 (s, 9H). MS: cal'd 401 (1VII3+ - Boc), exp 401 (MH+ - Boc).

Z
N P~O H NH2 O
[4-({[2-amino-5-(2-thienyl)phenyl}amino) carbonyl)phenyllmethyl dimethylphosphinate.
[4-({ [2-({ [(1,1-dimethylethyl)oxy]carbonyl} amino)-5-(2-thienyl)phenyl]
amino) carbonyl) phenyl]methyl dimethylphosphinate (1.1 g, 2.198 mmol) was taken up in DCM (20 mL)/TFA (8 mL). After 2 hours at room temperature the solvent was removed in vacuo.
Saturated NaHCO3 was added and the products extracted into EtOAc (x2). The combined organic extracts were washed with brine, dried over MgSO4 and concentrated in vacuo. The residue was triturated in EtOAc to give [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]methyl dimethylphosphinate as a beige solid. 'H-NMR (600mHz, DMSO-d6) S 9.72 (s, 1H), 7.98 (d, J
= 8.4 Hz, 2H), 7.49 (d, J = 8.4 Hz, 2H), 7.44 (d, J= 1.8 Hz, 1H), 7.32 (dd, J=
4.8 and 1.2 Hz, 1H), 7.27 (dd, J= 8.4 and 2.4 Hz, 1 H), 7.21 (dd, J= 3.6 and 1.2 Hz, 1 H), 7.01 (dd, J= 4.8 and 3.6 Hz, 1H), 6.78 (d, J= 8.4 Hz, 1H), 5.13 (s, 2H), 5.01 (d, J= 8.4 Hz, 2H), 1.45 (d, J.= 14.4 Hz, 6H). MS: cal'd 401 (MH), exp 401 (1VIIH+).

s )'~' I ~ ~
0~ H NH2 4-({[2-amino-5-(2-thienyl)phenyl}amino}carbonyl)benzyl dimethyl phosphate. [2-(4-Hydroxymethyl-benzoylamino)-4-thiophen-2-yl-phenyl]-carbamic acid tert-butyl ester (60 mg, 0.14 mmol) was made 0.25 M in anhydrous DCM and to this stirring solution was added DIPEA
(55 mg, 0.42 mmol), followed by dimethyl phosphochloridate (41 mg, 0.28 mmol).
The resulting mixture was stirred at ambient temperature for 16 h. The mixture was diluted with 0.5 mL TFA
and stirred for I h. The mixture was then diluted with EtOAc and carefully quenched with saturated aqueous sodium bicarbonate. The organic layer was washed again with saturated aqueous sodium bicarbonate, then dried (MgSO4) and concentrated in vacuo. The residue was purified by MPLC (0-8% MeOH in CH2C12). Pure fractions were identified, combined, and concentrated to afford the title compound. 'H NMR (DMSO-d6, 600MHz) S 9.75 (s, 1H), 8.01 (d, J= 7.8 Hz, 2H), 7.52 (d, J= 7.8 Hz, 1 H), 7.45 (s, 1 H), 7.34-7.33 (m, 1 H), 7.28 (dd , J= 8.4 Hz, J= 2.4 Hz, l H), 7.22 (d, J= 3.6 Hz, 1 H), 7.03 (dd, J= 4.8 Hz, J= 3.6 Hz, 1 H), 6.79 (d, J

= 8.4 Hz 1H), 5..12 (d, J=8.4 Hz, 2H), 5.15. (br-s, 2H), 3.67 (d, J=11.4 Hz, 6H). MS: cal'd 433.
(MH+), exp 433 (1VIII+).

~ OH
HO I /

4-(1-hydroxyethyl)benzoic acid. To a solution of inethyl-4-(1-hydroxyethyl)benzoate (2.00 g, 11.10 mmol) in a mixture of THF (20 mL) and MeOH (10 mL) was added I M KOH
(13.32 mL, 13.32 mmol). After stirring at room temperature overnight, the solution was diluted with 2 N
HCI and extracted with EtOAc (4x). The combined organic layers were dried (MgSO4) and evaporated to give 4-(1-hydroxyethyl)benzoic acid as a colorless solid. 'H NMR
(DMSO-d6, 600 MHz) 8 7.86 (d, J= 8.6 Hz, 2H), 7.43 (d, J= 8.3 Hz, 2H), 4.75 (q, J= 6.5 Hz, 1 H), 1.30 (d, J= 6.6 Hz, 3H). MS: cal'd 167 (MH+), exp 167 (MH+).

O O
P`o Tert-butyl 4-(2-{[ethoxy(methyl)phosphoryl]oxy}ethyl)benzoate. To a solution of tert-butyl 4-(2-hydroxyethyl)benzoate (100 mg, 0.45 mmol) and diisopropylethyl amine (0.16 mL, 0.90 mmol) in DMF (2 mL) was added DMAP (10 mg, 0.08 mmol) and BOP (400 mg, 0.90 mmol).
After stirring at room temperature overnight, the solution was diluted with saturated NaHCO3 solution and extracted with EtOAc. The combined organic layers were dried (Na2SO4) and concentrated in vacuo. The resulting residue was purified by MPLC (0-20%
MeOH/EtOAc) to give the title compound as a colorless oil. 'H NMR (CDC13, 600MHz) S 7.92 (d, J = 8.2 Hz, 2H), 7.27 (d, J= 8.2 Hz, 2H), 4.19-4.29 (m, 2H), 3.95-4.04 (m, 2H), 3.02 (t, J= 6.7 Hz, 2H) 1.58 (s, 9H), 1.38 (d, J= 18.9 Hz), 1.27 (t, J= 7.6 Hz). MS: cal'd 272 (MH+ -Boc), exp 272 (NIH+ -Boc).

o I ~ OH

4-(2-{[ethoxy(methyl)phosphoryl}oxy}ethyl)benzoic acid. To a solution of tert-butyl 4-(2-{[ethoxy(methyl)phosphoryl]oxy}ethyl)benzoate (108 mg, 0.33 mmol) in DCM (0.66 mL) was added TFA (0.60 mL, 7.8 mmol). After stirring at room remperature for 30 minutes, the solution was concentrated in vacuo to give the title compound as a colorless oil. 'H
NMR (CDC13, 600 MHz) 8 7.85 (d, J= 8.2 Hz, 2H), 7.37 (d, J= 8.2 Hz, 2H), 4.10-4.16 (m, 2H), 3.80-3.88 (m, 2H), 2.95 (t, J= 6.4 Hz, 2H), 1.32 (d, J= 17.3 Hz, 3H), 1.13 (t, J= 7.1 Hz, 3H). MS
cal'd 272 (MH+), exp 272 (MH+).

g/".
o ~
~
H
OIP HN
O UO~
I
O
I

2-[4-({ [2- [(tert-butoxycarbonyl)amin o]-5-(2-th ienyl)phenyl]
amino}carbonyl)phenyl]ethyl ethyl methylphosphonate. 1,1-dimethylethyl [2-({[4-(hydroxymethyl)phenyl]carbonyl}
amino)-4-(2-thienyl)phenyl]carbamate (140 mg, 0.50 mmol), BOP (440 mg, 0.99 mmol), 4-(2-{[ethoxy(methyl)phosphoryl]oxy}ethyl)benzoic acid (90 mg, 0.33 mmol), and DIPEA (0.17 mL, 0.99 mmol) were stirred in DMF (1.1 mL) at 60 C for 72 hours. The mixture was then diluted with saturated NaHCO3 solution and extracted with EtOAc. The organic layers were then washed with brine, dried over NaZSO4 and concentrated in vacuo. Purification of the crude reaction mixture by MPLC (0-10% MeOH/DCM) resulted in the title compound as a yellow foam. MS cal'd 445 (MH+ - Boc), exp 445 (MH+ - Boc).

z H z 2-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]ethyl ethyl methylphosphonate. To a solution of 2-[4-({[2-[(tert-butoxycarbonyl)amino]-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]ethyl ethyl methylphosphonate (180 mg, 0.33 mmol) in DCM (0.66 mL) was added TFA (0.3 mL, 3.9 mmol). After stirring at room temperature for 30 minutes the reaction mixture was concentrated in vacuo and the crude reaction mixture was purified by reverse-phase HPLC (5-65% MeCN/HZO). After purification, the fractions containing the desired product were combined and washed with saturated NaHCO3 solution.
The organic layer was then concentrated in vacuo to give the title compound as a pale yellow solid. 'H NMR (DMSO-d6, 600MHz) S 9.68 (s, 1H), 7.93 (d, J= 8.2 Hz, 2H), 7.44 (d, J= 1.7 Hz, 1 H), 7.39 (d, J= 8.2 Hz, 2H), 7.33 (dd, J= 1.1, 5.2 Hz, 1 H), 7.27 (dd, J= 2.1, 8.2 Hz, 1 H), 7.22 (dd, J= 1.2, 3.5 Hz, 1 H), 7.02 (dd, J= 3.8, 5.3 Hz, 1 H), 6.79 (d, J=
8.5 Hz, 1 H), 5.12 (s, 2H), 4.11-4.18 (m, 2H), 3.84-3.94 (m, 2H), 2.97 (t, J= 6.5 Hz, 2H), 1.35 (d, J= 17 Hz, 3H), 1.17 (t, J= 7.1 Hz, 3H). MS cal'd 445 (MH+) exp 445 (MH+).

Addition.1l analogs were prepared in procedures similar to those described for the preparations of the above examples.

Table 14. M; Alk lox Phos honates/Phos hinates/Phos hates Cpd d Structure Name MS FoSalt rms s~

[4-({[2-amino-5-(2- cal'd 431 N thienyl)phenyl]amino}carb (MH+), Free p'O H NHZ onyl)phenyl]methyl exp 431 base o ethylmethylphosphonate (MH+) ~
- ' ( [4-({[2-amino-5-(2- cal'd 479 2 I~ H\ thienyl)phenyl]amino}carb (MH+), Free /0.P,o / NHZ onyl)phenyl]methyl exp 479 base o methylphenylphosphonate (MH+) S i O N-[2-amino-5-(2- cal'd 459 Zk thienyl)phenyl]-4-( { [(4R, 5 + Free 3 O H R)-4,5-dimethyl-2-oxido- (~ )' O,P-O NHZ 1,3,2-dioxaphospholan-2- exp 459 base yl]oxy}methyl)benzamide (MEH+) S i 4-(([2-amino-5-(2- cal'd 433 ~ thienyl)phenyl]amino}carb (MH+), Free 4 O ~ H onyl)benzyl exp 433 base /O,'p'.O NH2 dimethylphosphate (MH+) 'O

~ s 1-[4-({[2-amino-5-(2- cal'd 445 0 thienyl)phenyl]amino}carb (MH+), Free N onyl)phenyl]ethyl ethyl exp 445 base ~O P,O H NH2 methylphosphonate (1VII3+) O

~ S
1-[4-({[2-amino-5-(2- cal'd 431 O thienyl)phenyl]amino}carb (MH+), Free 6 N~ onyl)phenyl] ethyl methyl exp 431 base ~O ~~O H NH2 methylphosphonate (MH+) P
n ~ s 1-[4-({[2-amino-5-(2- cal'd 493 7 O thienyl)phenyl]amino}carb (MH+), Free adtp / N onyl)phenyl]ethyl methyl exp 493 base ~, H NH2 phenylphosphonate (MH+) O

s /
4-({[2-amino-5-(2- cal'd 493 8 Q;/Y O thienyl)phenyl]amino}carb (MH+), Free ~ N onyl)benzyl exp 493 base ` ,o H NH2 ethylphenylphosphonate (MH+) P

s /
2-[4-({[2-amino-5-(2- cal'd 415 O thienyl)phenyl]amino}carb (MH+), Free O N onyl)phenyl]ethyl exp 415 base ~P.O H NH2 dimethylphosphinate (MH+) s 2-[4-({[2-amino-5-(2- cal'd 431 10 O i thienyl)phenyl]amino}carb (MH+), Free onyl)phenyl] ethyl methyl exp 431 base H methylphosphonate (MH+) 0, 0,0 NH2 s /
1-[4-( {[2-amino-5-(2-o , thienyl)phenyl]amino}carb cal'd 537 11 ,~ onyl)phenyl]-2,2,2- (MH+), Free -~P-- N trifluoro-l- exp 537 base ~ N (trifluoromethyl)ethyl (MH+) F F dimethylphosphinate F FF F

S /
4-({[2-amino-5-(2- cal'd 387 12 O thienyl)phenyl]amino}carb (MH+), Free onyl)phenyl exp 387 base O N ~ dimethylphosphinate (MH+) (4-{[(4-aminobiphenyl-3- cal'd 395 13 O yl)amino]carbonyl}phenyl) (~ ), Free N methyldimethyiphosphinate exp base H
~P'O / NH2 ~ S
1-[4-({[2-amino-5-(2- cal'd 443 thienyl)phenyl]amino}carb (MH+), Free 14 N onyl)phenyl]ethyldiethylph exp 443 base 'O H NH2 osphinate (MH+) n ~ s 4-({[2-amino-5-(2- cal'd 429 thienyl)phenyl]amino}carb (MH+), Free 15 O N onyl)benzyldiethylphosphi exp 429 base p H NH2 nate (MH+) ~ S
1-[4-({[2-arnino-5-(2- cal'd 415 16 0 thienyl)phenyl]amino}carb (MH+), Free N onyl)phenyl]ethyldimethyl exp 415 base H NH2 phosphinate (MH+) P O

~ S
4-({[2-amino-5-(2- cal'd 457 17 0 thienyl)phenyl]amino}carb (MH+), Free onyl)benzyldiisopropylpho exp 457 base H NH2 sphinate (MH+) n ~.S
1-[4-({[2-amino-5-(2- cal'd 471 18 0 thienyl)phenyl]amino}carb (MH+), Free ~ N onyl)phenyl]ethyldiisoprop exp 471 base O I ~ H NH2 ylphosphinate (MH+) O
Producedures for N. Preparation of Benzylamino Phosphonamides/Phosphinamides/
Phosphoramides.

S /
O
~ N
G I / H HNUO ~
I
D
I
Tert-butyl [2-{ [4-(chloromethyl)benzoyl]amino}-4-(2-thienyl)phenyl]carbamate.

(chloromethyl)benzoyl chloride (2 g, 10.58 mmol) was dissolved in THF (20 mL) and a solution of tert-butyl [2-amino-4-(2-thienyl)phenyl]carbamate (3.38 g, 11.64 mmol) and DIPEA (2.033 mL, 11.64 mmol) in THF (50 mL) was added dropwise at room temperature. After stirring for I
hour, saturated NaHCO3 was added and the products extracted into EtOAc (x2).
The combined organic extracts were dried over MgSO4 and concentrated in vacuo. The residue was triturated in EtOAc to give tert-butyl [2-{[4-(chloromethyl)benzoyl]amino}-4-(2-thienyl)phenyl]carbamate as a beige powder.

S /
O

~ N
H2N I / H HNu IDI ~

Tert-butyl [2-{[4-(aminomethyl)benzoyl]amino}-4-(2-thienyl)pbenyl]carbamate.
Tert-butyl [2-({4-[(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)methyl]benzoyl}amino)-4-(2-thienyl)phenyl]carbamate (4.4 g, 7.95 mmol) and hydrazine (0.495 mL, 15.90 mmol) were stirred in refluxing EtOH (35 mL) for 5 hours. Room temperature was attained and the white precipitate removed by filtration and washed with EtOH. The filtrate was concentrated in vacuo and purified by MPLC (1-12.5% [MeOH + 1% NH4OH]-DCM) to give tert-butyl [2-{[4-(aminomethyl)benzoyl]amino}-4-(2-thienyl)phenyl]carbamate as a white solid.

S
O ~ I
~ ~
0 P,N I / H NH2 O
Dimethyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]amidophosphate. Tert-butyl [2-{[4-(aminomethyl)benzoyl]amino}-4(2-thienyl)phenyl]carbamate (60 mg, 0.14 mmol) was made 0.25 M in anhydrous DCM and to this stirring solution was added DIPEA
(55 mg, 0.42 mmol), followed by dimethyl phosphochloridate (41mg, 0.28 mmol). The resulting mixture was stirred at ambient temperature for 16 h. The mixture was diluted with 0.5 mL TFA and stirred for lh. The mixture was then diluted with EtOAc and carefully quenched with saturated aqueous sodium bicarbonate. The organic layer was washed again with saturated aqueous sodium bicarbonate, then dried (MgSO4) and concentrated in vacuo. The residue was purified by MPLC (0-8% MeOH in CH2C12). Pure fractions were identified, combined, and concentrated to afford the title compound. 'H NMR (CDC13-di, 600MHz) S 8.1 (s, 1H), 7.91 (d, J= 8.4 Hz, 2H), 7.56 (s, IH), 7.43 (d, J =7.2 Hz, 2H), 7.34 (dd, J=8.4 Hz, J=1.8 Hz, 2H), 7.19-7.15 (m , 2H), 7.03-7.00 (m, IH), 6.84 (d J=8.4 Hz, 1H), 4.18-4.13 (m, 2H), 3.71 (d, J=11.4 Hz, 2H), 4.01 (br-s, 2H), 3.08-3.02 (m, IH). MS: cal'd 432 (MH+), exp 432 (iVIH+).

Additional analogs were prepared in procedures similar to those described for the preparations of the above examples.
Table 15. N; Benz lamino Phos honamides/Phos hinamides/Phos horamides C~d Structure Name MS FoSalt rms s dimethyl [4-({[2-amino-5- , O (2-thienyl)phenyl]amino} cal d 432 Free 1 O H I~ H carbonyl)benzyl] 432 )x+~ base O, P, N i NH2 amidophosphate ~

S i N -[2-amino-5-(2-0 ~ thienyl)phenyl]-4-({[(4R, cal'd 458 5R )-4,5-dimethyl-2- (MH+ Free 2 O H ~ H oxido-1,3,2 - )' exp base p,P,N i NH2 dioxaphospholan-2-yl] 458 (MH+) amino) methyl)benzamide S
N -[2-amino-5-(2-0 thienyl)phenyl]-4- cal'd 458 3 ~ N ~ ({[bis(dimethylamino)phos (MH+), exp baFree se j,P N ~ i H NH2 phoryl] amino )methyl) 458 (MH+) , benzamide ~N~

Procedures for O. Preparation of Alkylamino Phosphonamide/Phosphinamide/Phosphoramides.

ci~~
CI" ,N I
H
Methyl4-[(dichlorophosphoryl)amino]benzoate. A suspension of methyl 4-amino benzoate (3.04 g, 19.85 mmol) in phosphorous oxychloride (3.00 g, 19.85 mmol) was heated to 120 C
and stirred for 2 hours. The reaction mixture was cooled to ambient temperature. The solid was filtered and rinsed with pentane. The solid was dried in vacuo to afford the requisite product.

0.o &O~ O~kN I H

M
ethyl 4-[(dimethoxyphosphoryl)amino]benzoate. Methyl 4-[(dichlorophosphoryl)amino]
benzoate (2.50 g, 9.33 mmol) was made 0.33 M in anhydrous methanol and stirred at ambient temperature for 16 h. The reaction mixture was concentrated in vacuo to afford the requisite product. MS: cal'd 260 (MH+), exp 260 (MH+) 0.~ I OH
Q~ N
I H
4-[(Dimethoxyphosphoryl)amino]benzoic acid. Methyl 4-[(dimethoxyphosphoryl)amino]
benzoate (1.50 g, 5.79 mmol) was made 0.25 M in dioxane and to this stirring solution was added 3M aq LiOH. The resulting solution was stirred at ambient temperature for 16 h. The reaction mixture was then neutralized to pH=7 with IN aq HCI and concentrated in vacuo to afford the requisite product. MS: cal'd 243 (MH+), exp 243 (MH+) . . / . .
O, I~ I H
~P~ NHZ

Dimethyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyllamidophosphate. 4-[(Dimethoxyphosphoryl)amino]benzoic acid (100 mg, 0.41 mmol), 2-amino-4-thiophen-2-yl-phenyl)-carbamic acid tert-butyl ester (142 mg, 0.49 mmol), EDC (94 mg, 0.49 mmol), HOBT
(75 mg, 0.49 mmol), and DIPEA (158 mg, 1.22 mmol) were combined and diluted with DMF
(1.6 mL). The resulting mixture was stirred at ambient temperature for 18 hours. The reaction mixture was diluted with water and extracted with EtOAc (2x). The combined organic layers were washed again with water (2x) then dried (MgSO4) and concentrated in vacuo. The residue was purified by MPLC (0-8% MeOH in CH2C12). Pure fractions were identified, combined, then concentrated in vacuo. The residue was diluted with 2:1 DCM:TFA and stirred at ambient temperature for 1 h. The mixture was then carefully quenched with sat aq sodium bicarbonate and extracted with EtOAc. The organic layer was dried (MgSO4) and concentrated in vacuo to afford the title compound: MS: cal'd 418 (MH+), exp 418 (MH+). 'H NMR (DMSO-d, 600MHz) 8 9.52 (s, 1 H), 8.46 (d, J= 9.1 Hz, 1H), 7.87 (d, J=8.2 Hz, 2H), 7.42 (s, 1 IT), 7.33 (d, J=5.0 Hz, 1H), 7.26 (d, J= 8.2 Hz, 1 H), 7.21 (d, J=3.5 Hz, 1 H), 7.08 (d, J=8.5 Hz, 2H), 7.03-7.01 (m, 1H), 6.78 (d, J=8.2 Hz, 1H), 5.09 (s, 2H), 3.65 (d, J=11.2 Hz, 6H).
MS: cal'd 418 (MH+), exp 418 (MH+).

S

cir ~N
NHBoc tert-butyl [2-[(4-aminobenzoyl)amino]-4-(2-thienyl)phenyl]carbamate. To a solution of 4-nitrobenzoyl chloride (320 mg, 1.72 mmol) in pyridine (5.0 mL) was added tert-butyl [2-amino-4-(2-thienyl)phenyl]carbamate (500 mg, 1.72 mmol). The reaction mixture was allowed to stir at room temperature for 1 hour. The crude reaction mixture was diluted with EtOAc (20 mL) and washed with 2M HCl (10 mL), 2M NaOH (10 mL) and sat.'d aq. NaHCO3 (1 x 10 mL).
The organic layer was dried over MgSO4, filtered, and concentrated in vacuo and gave the desired tert-butyl[2-[2-(4-nitrobenzoyl)amino]-4-(2-thienyl)phenyl]carbamate which was confirmed by MS: cal'd 462.1 (1VIIiNa+), exp 462.1 (MHNa+).
To a solution of tert-butyl [2-[(4-nitrobenzoyl)amino]-4-(2-thienyl)phenyl]carbamate (598 mg, 1.36 mmol) in 1:1 EtOAc/THF was added 10 mol% Pd/C (136 mg, 1.36 mmol). The reaction mixture was evacuated and refilled with hydrogen (2x). The black reaction mixture was stirred in a parr shaker under 50 psi of hydrogen overnight. The mixture was filtered through a pad of celite (with EtOAc then CH2C12 washes) and concentrated to provide tert-butyl [2-[(4-aminobenzoyl)amino]-4-(2-thienyl)phenyl]carbamate which was confirmed by MS :
cal'd 410.1 (MH+), exp 410.1 (MH+).

Table 16. 0; Anilino phosphonates Cpd# Structure Name MS Salt Forms s dimethyl [4-({[2-amino-5-(2- cal'd 418 1 ~ thienyl)phenyl]amino} (MH+), exp Free o~ H carbonyl)phenyl] amid 418 base o,d.H NHZ ophosphate S ~ diethyl [4-({[2-amino-~ 5-(2- cal'd 446 Free 0 ~ ~
2 thienyl)phenyl]amino} (MH+), exp ~
o~0N I~ H NHZ carbonyl)phenyl] amid 446 base H ophosphate dimethyl [4-({[2-o ~ amino-5-(2- cal'd 412 3 o N~ thienyl)phenyl]amino} (~+), exp Free =d, H NHZ carbonyl)phenyl]amid 412 base ophosphate S /
dimethyl [4-( { [2-amino-5-(2- cal'd 432 4 ~ thienyl)phenyl]amino} (MH+), exp baFree se O N carbonyl)phenyl]meth 432 O' 0,N H NH2 ylamidophosphate I I

= ' \ . . .
~ dimethyl (4- { [(4-aminobiphenyl-3- cal'd 426 ~ yl)amino]carbonyl}ph (MH+), exp Free O \ N enyl)methylamidophos 426 base O'd,N I~ H NH2 phate I I

s ~

N-[2-amino-5-(2- , 6 O thienyl)phenyl]-4- (a)4eXp Free O ~ N [bis(dimethylphosphor ase N I i H NH2 yl)amino]benzamide 462 Procedures for P. Preparation of Alkylamino PhosQhorus containing Carbamates/Ureas.
N
~
\ \ I OH
PO
[5-(dimethylphosphoryl)pyridin-3-yl]methanol. Tert-butyldimethylsilyl 5 trifluoromethanesulfonate (1.174 ml, 5.11 mmol) was added to 2,6-lutidine (0.743 ml, 6.38 mmol) and (5-bromopyridin-3-yl)methanol (800 mg, 4.25 mmol) stirred in CH2ClZ
(10 ml) cooled to 0 C and the mixture was stirred at 0 C for 1 h.. Saturated aqueous sodium hydrogen carbonate was added to the reaction mixture and the mixture was extracted with ethyl acetate.
The combined organic fractions were dried (Na2SO4), filtered and the solvent was evaporated under reduced pressure. The residue was purified by column chromatography to provide 3-bromo-5-({[tertbutyl(dimethyl)silyl]oxy}methyl)pyridine: MS : cal'd 325 (MNa+), exp 325 (MNa+).

3-bromo-5-({[tertbutyl(dimethyl)silyl]oxy}methyl)pyridine (600 mg, 1.985 mmol) was dissolved in THF (2 ml) and then cooled to -100 C (LN2/Et2O). BuLi (0.834 ml, 2.084 mmol) was then added slowly. The reaction mixture was then stirred at -100 C for 15 minute.
Dimethylphosphinic chloride (246 mg, 2.183 mmol) was then added to the reaction and the mixture was stirred as the temperature slowly rose over the course of one hour. After which time, the bath temp was -40 C. At this point, the bath was removed and the clear, pale yellow reaction mixture continued to stir as it warmed to RT. The mixture was then poured into a separatory funnel containing saturated NaHCO3 solution and Et20. The mixture was extracted with Et20 (3x). The combined organic layers were then washed with brine, dried over Na2SO4 and concentrated in vacuo. Purification of the crude reaction mixture by HPLC
provided: 3-({[tert -butyl(dimethyl)silyl]oxy}methyl)-5-(dimethylphosphoryl)pyridine: MS :
cal'd 300 (MH+), exp 300 (MH+).
Acetyl chloride(0.044 ml, 0.625 mmol) was added to 3-({[tert -butyl(dimethyl)silyl]oxy}methyl)-5-(dimethylphosphoryl)pyridine (170 mg, 0.568 mmol) stirred in MeOH (lml) at 0 C and the mixture was stirred at 0 C for 1 h.. The reaction was concentrated and left on high vac pump to dry. [5-(dimethylphosphoryl)pyridin-3-yl]methanol was taken on to next reaction crude. MS : cal'd 186 (MH+), exp 186 (MH+).

~ N
CI ~ / H HN y IOI

1,1-dimethylethyl [3-({[4-(chloromethyl)phenyl]carbonyl}amino)biphenyl-4-yl]carbamate.
4-(chloromethyl)benzoyl chloride (12 g, 63.5 nunol) was dissolved in THF (120 mL) and a solution of 1,1-dimethylethyl (3-aminobiphenyl-4-yl)carbamate (19.86 g, 69.8 mmol) and DIPEA (12.2 mL, 69.8 mmol) in THF (300 mL) was added dropwise at room temperature. After stirring for 1 hour, saturated NaHCO3 was added and the products extracted into EtOAc (x2).
The combined organic extracts were dried over MgSO4 and concentrated in vacuo.
The residue was triturated in Et20 to give 1,1-dimethylethyl [3-({[4-(chloromethyl)phenyl]carbonyl}amino)biphenyl-4-yl]carbamate as a white solid.
'H NMR (d6-DMSO, 600 MHz) 8 9.92 (s, 1H), 8.75 (s, 1H), 7.97 (d, J= 8.4 Hz, 2H), 7.83 (s, 1H), 7.63 (m, 3H), 7.59 (d, J = 8.4 Hz, 2H), 7.50 (dd, J= 8.4 and 1.8 Hz, 1 H), 7.44 (t, J=
7.2 Hz, 2H), 7.33 (t, J= 7.2 Hz, 1H), 4.84 (s, 2H), 1.44 (s, 9H).

~ I
~ ~
\ ~ N
NoI i H HNUO~
O IOI
1,1-dimethylethyl {3-[({4-[(1,3-dioxo-1,3-dihydro-2H-isoindoi-2-yl)methyl]phenyl}carbonyl) amino] biphenyl-4-yl}carbamate. 1,1-dimethylethyl [3-( { [4-(chloromethyl)phenyl]
carbonyl)amino)biphenyl-4-yl]carbamate (20 g, 45.8 mmol), potassium phthalimide (9.33 g, 50.4 nunol) and potassium iodide (1.52 g, 9.15 mmol) were stirred in DMF (81 mL) at 50 C
overnight. Room temperature was attained, H20 was added and the products extracted into EtOAc (x2). The combined organic extracts were washed with brine, dried over MgSO4 and concentrated in vacuo. The residue was triturated in MeOH to give 1,1-dimethylethyl {3-[({4-[(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)methyl]phenyl}
carbonyl)amino]biphenyl-4-yl}carbamate as a pale yellow solid.

N MzN J), H HNUO~
IO' 1,1-dimethylethyl [3-({[4-(aminomethyl)phenyl]carbonyl}amino)biphenyl-4-yl]carbamate.
1,1-dimethylethyl {3-[({4-[(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)methyl]phenyl}carbonyl) amino]biphenyl-4-yl}carbamate (17 g, 31 mmol) and hydrazine hydrate (3.01 mL, 62.1 mmol) were stirred in refluxing EtOH (135 mL) for 5 hours. Room temperature was attained and the white precipitate removed by filtration and washed with EtOH. The filtrate was concentrated in vacuo and purified by MPLC (10% [MeOH + 1% NHaOH]-DCM) to give 1,1-dimethylethyl [3-({[4-(aminomethyl)phenyl]carbonyl}amino)biphenyl-4-yl]carbamate as a white solid. 'H NMR
(d6-DMSO, 600 MHz) 8 9.86 (s, 1H), 8.77 (s, 1H), 7.90 (d, J= 7.8 Hz, 2H), 7.85 (d, J= 1.8 Hz, 1 H), 7.62 (m, 3H), 7.49 (m, 3H), 7.44 (t, J= 7.5 Hz, 2H), 7.3 3 (t, J= 7.5 Hz, 1 H), 3.79 (s, 2H), 1.45 (s, 9H).

' I\
0 0 ~
I
P
\
N
/ \ I OuN I i H HN,BOo IOI

4-(Dimethylphosphoryl)benzyl(4-{ [(4-aminobiphenyl-3-yl)amino]carbonyl}benzyl) carbamate. A solution of CDI (117 mg, 0.722 mmol) in dry THF (5 mL) was treated with a solution of [4-(dimethylphosphoryl)phenyl]methanol (133 mg, 0.722 mmol) in DMSO (2 mL) and THF (1 mL) dropwise. The resulting solution was stirred for 1 h and then added dropwise over 5 min. to a solution of 1,1-dimethylethyl [3-({[4-(aminomethyl)phenyl]carbonyl}amino) biphenyl-4-yl]carbamate (301 mg, 0.722 mmol), Et3N (101 L, 0.722 mmol) and DBU (109 L, 0.722 mmol) in dry THF (5 mL). The reaction mixture was stirred at RT
overnight. The reaction mixture was concentrated in vacuo, diluted with EtOAc, washed with H20, 0.5 N HCI, dried (MgSO4), filtered and the solvent was evaporated under reduced pressure.
The residue was purified by column chromatography on silica gel, eluting with CHC13/MeOH (2.5%
to 20%) to give a glassy yellow solid. 'H NMR (CDC13, 600 MHz) S 9.28 (br s, 1H), 8.02 (s, 1H), 7.90 (d, J
= 8.0 Hz, 2H), 7.75-7.67 (m, 2H), 7.59 (d, J 8.0 Hz, 2H), 7.50-7.46 (m, 2H), 7.42-7.35 (m, 4H), 7.34-7.29 (m, IH), 7.27 (d, J= 8.0 Hz, 2H), 6.98 (s, 1H), 5.49 (br s, 1 H), 5.18 (s, 2H), 4.41 (d, J= 6.0 Hz, 2H), 1.71 (dd. J= 12.9, 3.8 Hz, 6H). MS: cal'd 628 (MH+), exp 628 (MH+).

~ S
O I \
N ~
CI"_"OUN H HNY- O
O Ot Chloromethyl [4-({[2-[(tert-butoxycarbonyl)amino]-5-(2-thienyl)phenyl]amino}carbonyl) benzyllcarbamate. tert-butyl [2-{[4-(aminomethyl)benzoyl]amino}-4-(2-thienyl)phenyl]carbamate (2.0 g, 4.72 mmol) was suspended in dichloromethane (50 ml).
Hunig'sBase (I ml, 5.73 mmol) was added. The solution was cooled to 0 C.
Chlorocarbonic acid chloromethyl ester (0.5 ml, 5.68 mmol) was added slowly. The reaction was stirred for approximately 1-2 h. The mixture, while cold, was diluted with dichloromethane and washed with saturated aqueous sodium bicarbonate. The aqueous layer was extracted three times with dichloromethane. The combined organic layers were dried over NazSOa, filtered, and the solvent was evaporated under reduced pressure. The residue was purified by column chromatography on silica gel eluting with EtOAc/hexane. MS: calc'd 417 (MH+-Boc), exp 417 (MH+-Boc).

~ S
O

O H N
O
\O-O Oy N I / H HNy Dimethyl {[({[4-({[2-[(tert-butoxycarbonyl)amino]-5-(2-thienyl)phenyl]amino}carbonyl) benzyl]amino}carbonyl)oxy]methyl}phophonate. Chloromethyl [4-({[2-[(tert-butoxycarbonyl)amino]-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]carbamate (0.96 g, 1.860 mmol) and trimethyl phosphite (1 ml, 8.48 mmol) were combined in a microwave vial. The vial was capped and the reaction was allowed to heat for 3.5 hours at 100 C. The reaction was cooled and diluted with dichloromethane. The residue was purified by column chromatography on silica gel eluting with EtOAc/hexane. MS: calc'd 490 (NIII+-Boc), exp 490 (MH+-Boc).

S

\
O H N

\Ol O OyN I / H NHZ
~ 0 Dimethyl {[({[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]amino}carbonyl) oxy] methyl}phosphonate. Dimethyl {[( {[4-( {[2-[(tert-butoxycarbonyl)amino]-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]amino}carbonyl)oxy]methyl}phophonate 0.496 g, 0.841 nvnol) was dissolved in DCM (4 ml). TFA (1 ml, 12.98 mmol) was added. The reaction was allowed to stir for -lh 15 min. The reaction was diluted with DCM and washed with saturated aqueous sodium hydrogen carbonate. The aqueous layer was extracted three times with DCM.
The combined organic layers were dried over Na2SO4, filtered, and concentrated. 'H NMR
(DMSO-d6, 600 MHz) S 9.67 (s, 1H), 8.13 (t, J= 6.3 Hz, 1H), 7.93 (d, J= 7.9 Hz, 2H), 7.44 (bs, 1 H), 7.35 (d, J= 7.9 Hz, 2H), 7.32 (dd, J= 5.1 Hz, 1.0 Hz, 1 H), 7.26 (dd, J=
8.4 Hz, 2.2 Hz, 1 H), 7.21 (d, J= 3.1 Hz, 1 H), 7.01 (dd, J= 5.1 Hz, 3.7 Hz, 1 H), 6.77 (d, J=
8.2 Hz, 1 H), 5.11 (s, 2H), 4.39 (d, J= 7.9 Hz, 2H), 4.25 (d, J= 6.2 Hz, 2H), 3.66 (d, J= 10.6 Hz, 6H). MS: calc'd 490 (MH+), exp 490 (MH+).

Additional analogs were prepared in procedures similar to those described for the preparations of the above examples.
Table 17. P; Alkylamino Phosphorus containing Carbamates/Ureas Cpd# Structure Name MS Salt Forms I (dimethylphosphoryl) benzyl (4-{[(4-amino cal'd 528 Free 1 ~P ~ \ N\ I biphenyl-3-yl) amino] (MH+), exp base ~ I o N ~ N~ carbonyl)benzyl) 528 o carbamate CA 02657288 2009-01-08 pC,I,/US2007/016123 _ [5-~ s (dimethyiphosphoryl) pyridin-3-yl]methyl cal'd 535 Free 2 N ~ N I [4-({[2-amino-5-(2- (MH+), exp base l1~ 4 ~ I H N~ thienyl)phenyl]arnino} 535 0 ~ carbonyl)benzyl]
carbamate Diethyl ({[(4-{[(4-< aminobiphenyl-3- cal'd 526 3 yl)amino]carbonyl}ph (MH+), exp Free d-P1 . enyl)methyl][(methylo 526 base ~o~ N~~1.~ H NH2 xy)carbonyl]amino}
0 methyl)phosphonate ~ s Diethyl {[({[4-(((2-amino-5-(2- cal'd 518 4 ~ f thienyl)phenyllamino) (MH+), ex Free fl H q carbonyl)benzyl]amin p base o oyN ~ NH2 o}carbonyl)oxy]methy 518 1 0 I}phosphonate ~ s Dimethyl {[({[4-({[2-amino-5-(2- cal'd 490 0 thienyl)phenyl]amino} } Free 0 ~' N ' carbonyl)benzyl]amin ~ exp base H
N H NH2 o}carbonyl)oxy]methy 'o 0 1}phosphonate ~ s Methyl {[({[4-({[2-amino-5-(2- cal'd 474 6 0 thienyl)phenyl]amino} ~ exp 0 ~, N carbonyl)benzyl]amin ~?4 p base o N H NHZ o}carbonyl)oxy]methy 0- 0 1}methylphosphinate s Ethyl ([( {[4-( {[2-amino-5-(2- cal'd 488 7 0 thienyl)phenyl]amino} } eX Free H carbonyl)benzyl]amin ~ gg p base ,~,o P oy r"~ NH2 o}carbonyl)oxy]methy 0 1}methylphosphinate S Ethyl {[({[4-({[2-amino-5-(2-thienyl) cal'd 8 0 1~ phenyl]arnino}carbony 502 ~+ Free 0 H \ N 1)benzyl]amino}carbon p )' base 11 ,-.,O..P o~,N\/~~ H NH2 yl)oxy]methyl} ex 502 0 ethylphosphinate X S (dimethylphosphoryl) methyl [4-({[2-amino- cal'd 9 o I5-(2-thienyl)phenyl] 458(MH+), Free H P o N H NH ~'ino}carbonyl) exp 458 base Iv y 2 benzyl]carbamate O
Procedures for O. Preparation of Amino Phosphorus containing Amines and Amides.
s ~

I P N I / H HN~O
/-O

0-)<

Diethyl [({[4-({[2-({1(1,1-dimethylethyl)oxy]carbonyl}amino}5-(2-thienyl)phenyl]amino}
carbonyl)phenyl]methyl}amino)methyl]phosphonate. 1,1-dimethylethyl [2-( {[4-(bromomethyl)phenyl]carbonyl}amino)-4-(2-thienyl)phenyl]carbamate (500 mg, 1.026 mmol), diethyl (aminomethyl)phosphonate oxalate (791 mg, 3.08 mmol), and DIPEA (1.254 mL, 7.18 mmol) were stirred in DMF (6 mL) at 50 C overnight. Room temperature was attained, H20:
was added and the products extracted into EtOAc (x2). The combined organic extracts were washed with brine, dried over MgSO4 and concentrated in vacuo. Purification of the residue by MPLC (0-10% MeOH-EtOAc) gave diethyl [({[4-({[2-({[(l, 1 -dimethylethyl)oxy]carbonyl}
amino)-5-(2-thienyl)phenyl]amino}carbonyl) phenyl]methyl}amino)methyl]phosphonate as a colourless gum. MS: cal'd 574 (MH+), exp 574.

s ~

~O
Diethyl [({[4-(1[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]
methyl}amino) methyl]phosphonate. diethyl [({[4-( {[2-({[(1,1-dimethylethyl)oxy]carbonyl}amino)-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]methyl}amino)methyl]phosphonate (360 mg, 0.628 mmol) was taken up in DCM (6 mL)/TFA (2 mL). After 4 hours at room temperature, the solvent was removed in vacuo, saturated NaHCO3 was added and the products extracted into EtOAc (x2). The combined organic extracts were washed with brine, dried over Na2SO4 and concentrated in vacuo to give diethyl [({[4-({[2-amino-5-(2-thienyl)phenyl]amino}
carbonyl)phenyl]methyl}amino)methyl]phosphonate as a beige solid. 'H NMR (DMSO-d6i 600 MHz) S 9.67 (s, 1 H), 7.93 (d, J= 8.4 Hz, 2H), 7.43 (m, 3H), 7.32 (dd, J= 4.8 and 0.6 Hz, 1 H), 7.26 (dd, J= 8.4 and 1.8 Hz, 1 H), 7.21 (m, 1 H), 7.01 (dd, J= 5.4 and 3.6 Hz, 1 H), 6.78 (d, J=
8.4 Hz, 1 H), 5.12 (s, 211), 3.99 (m, 4H), 3.81 (s, 2H), 2.81 (d, J= 12.0 Hz, 2H), 2.40 (br s, 1 H), 1.20 (t, J= 7.2 Hz, 6H)_ MS: cal'd 474 (MH+), exp 474.
Additional Analogs were prepared in procedures similar to those described for the preparations of previous examples.

Table 18. Q; Amino Phosphorus Containing Amines and Amides Cpd# Structure Name MS Salt Forms s 1 X Diethyl (4- { [4-( { [2-Free o amino-5-(2-thienyl) - rv phenyl]amino}carbony cal'd 550 i~ " H NHZ 1)benzoyl]amino} (MH+), exp base o,P phenyl)phosphonate 550 s~
Diethyl [({[4-({[2-0 amino-5-(2-thienyl) , 2 0_ vp ~~ ,"~ phenyl] amino} carbony (a~ e8p Free -if ~o 1)phenyl]carbonyl}
488 base amino)methyl]
phosphonate ~s~~
Diethyl [( { [4-( { [2-~N amino-5-(2-thienyl) cal'd 474 Free 3 o-P H N,-,2 phenyl]amino} + exp d v carbonyl)phenyl] (~ 74 base methyl ) amino)methyl]
phosphonate Procedures for R. Preparation of Cyclic Phosphonates o HO
HO
tert-Butyl 4-[2-hydroxy-l-(hydroxymethyl)ethyl]benzoate. To a solution ofNaBH4 (1.23 g, 32.4 mmol) in MeOH (20 ml) was added a solution of dimethyl [4-(tert-butoxycarbonyl)phenyl]
malonate (2.00 g, 6.49 mmol) in 3:2 MeOH:THF (18 mL). The reaction was stirred at room temperature for 2 h. It was then quenched with saturated NH4C1 and extracted with EtOAc (2x).

The combined organic layers were washed with brine, dried (MgSO4), and evaporated. Flash chromatography (0-10% MeOH/CH2C12) afforded tert-butyl 4-[2-hydroxy-l-(hydroxymethyl)ethyl]benzoate as a colorless solid. 'H NMR (CDC13, 600 MHz) S
7.93 (d, J=
8.4 Hz, 2H), 7.27 (d, J= 8.2 Hz, 2H), 3.99 (ddd, J= 10.8, 7.4, 5.1 Hz, 2H), 3.93 (dt, J= 10.7, 5.2 Hz, 2H), 3.13 (tt, J= 7.6, 5.5 Hz, IH), 2.14 (t, J= 5.3 Hz, 2H), 1.56 (s, 9H).
MS: cal'd 275 (MH+), exp 275 (MH+).

ck O;p`O

tert-Buty14-(2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl)benzoate. tert-Butyl 4-[2-hydroxy-1-(hydroxymethyI)ethyl]benzoate (440 mg, 1.74 mmol) and TEA (510 l, 3.66 mmol) were taken up in CH2C12 (20 mL) and cooled to 0 C. Methylphosphonic dichloride (193 l, 2.09 mmol) in CH2CI2 (10 mL) was added dropwise over 30 minutes. The reaction was then allowed to warm to room temperature and stirred for 1 h. The mixture was diluted with water and extracted with CH2C12 (2x). The combined organic layers were washed with brine, dried (MgSO4), and evaporated. Flash chromatography (0-10% MeOH/CH2C12) allowed separation of residual starting material from the diastereomeric products, but the diastereomers coeluted.
Flash chromatography of the mixed diastereomers with 25-100% EtOAc/hexanes slowly eluted the first diastereomer, and the same column was flushed with 2-10% MeOH/CH2Cl2 to push off the second diastereomer (both were obtained as colorless solids). 'H NMR
(CDC13, 600 MHz) Diastereomer 1: S 7.95 (d, J= 8.5 Hz, 2H), 7.25 (d, J= 8.5 Hz, 2H), 4.70-4.65 (m, 2H), 4.24-4.17 (m, 2H), 3.54-3.47 (m, 1H), 1.63 (d, J= 18.0 Hz, 3H), 1.56 (s, 9H).
Diastereomer 2: S 7.97 (d, J= 8.4 Hz, 2H), 7.31 (d, J= 8.3 Hz, 2H), 4.66-4.59 (m, 2H), 4.36-4.30 (m, 2H), 3.50-3.45 (m, 1 H), 1.62 (d, J= 17.3 Hz, 3H), 1.57 (s, 9H). MS: cal'd 313 (MH+), exp 313 (MH+).

Analogs were prepared in procedures similar to those described for the preparations of the above examples.
Table 19. R; Cyclic Phosphonates Cpd# Structure Name MS Salt Forms ~ s 1V-[2-amino-5-(2-thienyl)phenyl]-4- , [(2s)-2-oxido-2- cal d 491 Free H phenyl-1,3,2- (MH+), exp base NH2 dioxaphosphinan-5- 491 o yl]benzamide - ~
s IV-[2-amino-5-(2-0 thienyl)phenyl]-4- cal'd 491 2 1 [(2r)-2-oxido-2- + exp Free " H phenyl-1,3,2- (~ )' base o N"2 dioxaphosphinan-5- 491 0 ~o yl]benzamide ~ S 1V-[2-amino-5-(2-thienyl)phenyl]-4- , [(2s)-2-methyl-2- cal d 429 Free 3 H N oxido-1,3,2- (MH+)' exp base o N"z dioxaphosphinan-5- 429 , ,,.
.
o _ yl]benzamide s N-[2-amino-5-(2-thienyl)phenyl]-4- , [(2r)-2-methyl-2- (MH+cal d 429 Free oxido-1,3,2- )' exp base o NH2 dioxaphosphinan-5- 429 D o yl]benzamide Procedures for S. Preparation of Keto Phosphinates and Cyclic Phosphinates 0 Br Ethyl [3-(4bromophenyl)-3-oxopropyl]methylphosphinate. 1-(4-bromophenyl)-3-chloropropan-l-one (4.5 g, 18.18 mmol) and diethyl methylphosphonite (6 g, 44.1 mmol) were stirred in refluxing toluene (9 mL) for 5 hours. Room temperature was attained and the solvent removed in vacuo. Purification of the residue by MPLC (0-10% MeOH-EtOAc) gave ethyl [3-(4-bromophenyl)-3-oxopropyl]methylphosphinate as a pale yellow oil that crystallised on standing.

~"
~P I ~

4-{3-[(ethyloxy)(methyl)phosphoryl]propanoyl}benzoic acid. Ethyl [3-(4-bromophenyl)-3-oxopropyl]methylphosphinate (3 g, 9.40 mmol), palladium(II) acetate (0.106 g, 0.470 mmol) and 1,3-bis(diphenylphosphino)propane (0.194 g, 0.470 mmol) were taken up in DMF
(24 mL)/water (8 mL). CO was bubbled through for 10 minutes before adding DIPEA (3.28 mL, 18.80 mmol) and stirring at 70 C under a balloon of CO overnight. Room temperature was attained and saturated NaHCO3 was added. The aqueous phase was extracted with EtOAc (x2) before acidifying with 2N HCl and extracting again with EtOAc (x2). The combined organic extracts from the acidic aqueous were washed with brine, dried over MgSO4 and concentrated in vacuo to give 4-{3-[(ethyloxy)(methyl)phosphoryl]propanoyl}benzoic acid as a pale yellow solid.
~
s H HN

O 0-1<

Ethyl {3-[4-({[2-({[(1,1-dimethylethyl)oxy]carbonyl}amino)-5-(2-thienyl)phenyl]amino}
carbonyl)phenyl]-3-oxopropyl} methylphosphinate. 4- {3-[(ethyloxy)(methyl)phosphoryl]
propanoyl}benzoic acid (1 g, 3.52 mmol), 1,1-dimethylethyl [2-amino-4-(2-thienyl)phenyl]carbamate (1.532 g, 5.28 mmol), DIPEA (0.922 mL, 5.28 mmol) and BOP (2.334 g, 5.28 mmol) were stirred in DMF (10 mL) at room temperature overnight.
Saturated NaHCO3 was added and the products extracted into EtOAc (x2). The combined organic extracts were washed with water and brine, dried over MgSO4 and concentrated in vacuo.
Purification of the residue by MPLC (0-20% MeOH-EtOAc) gave ethyl {3-[4-({[2-({[(1,1-dimethylethyl)oxy]
carbonyl}amino)-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]-3-oxopropyl}methylphosphinate as an orange solid. MS: cal'd 457 (MH+ - Boc), exp 457 (MH+ - Boc).

~ s ~I
N \
H HN

1,1-dimethylethyl [2-({ [4-(2-methyl-2-oxido-1,2-oxaphospholan-5-yl)phenyl]
carbonyl}
amino)-4-(2-thienyl)phenyl}carbamate. Ethyl {3-[4-({[2-({[(1,1-dimethylethyl)oxy]carbonyl}
amino)-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]-3-oxopropyl}methylphosphinate (0.7 g, 1.258 mmol) was taken up in THF (6 mL) and sodium borohydride (0.052 g, 1.383 mmol) was added before stirring overnight. Saturated NH4Cl was added and the products extracted into EtOAc (x2). The combined organic extracts were dried over MgSO4 and concentrated in vacuo.

Purification of the residue by MPLC followed by HPLC gave 1,1-dimethylethyl [2-({[4-(2-methyl-2-oxido-1,2-oxaphospholan-5-yl)phenyl]carbonyl} amino)-4-(2-thienyl)phenyl]carbamate as a white solid. The title compound was obtained as a-1:1 mixture of diastereosiomers.

~ s ~I
Zk"

Ethyl {3-[4-({ [2-amino-5-(2-thienyl)phenyl] amino}carbonyl)phenyl]-3-oxopropyl}
methylphosphinate. Ethyl {3-[4-({[2-({[(1,1-dimethylethyl)oxy]carbonyl}amino)-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]-3-oxopropyl}methylphosphinate (125 mg, 0.225 mmol) was taken up in DCM (5 nmL)/TFA (2 mL). After 3 hours, saturated NaHCO3 was added and the products extracted into EtOAc (x2). The combined organic extracts were washed with brine, dried over MgSO4 and concentrated in vacuo to give ethyl {3-[4-( {[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]-3-oxopropyl}methylphosphinate as an orange solid.
MS: cal'd 457 (MH+), exp 457 (MFi+).

~ s ~ I

N ~ P H NHz ' ~-e N-[2-amino-5-(2-thienyl)phenyl]-4-(2-methyl-2-oxido-1,2-oxaphospholan-5-yl)benzamide.
1, 1 -dimethyl ethyl [2-({[4-(2-methyl-2-oxido-l,2-oxaphospholan-5-yl)phenyl]carbonyl}amino)-4-(2-thienyl)phenyl]carbamate (95 mg, 0.185 mmol) was taken up in DCM (5 mL)/TFA (2 mL).
After 3 hours, saturated NaHCO3 was added and the products extracted into EtOAc (x2). The combined organic extracts were washed with brine, dried over MgSO4 and concentrated in vacuo to give N-[2-amino-5-(2-thienyl)phenyl]-4-(2-methyl-2-oxido-1,2-oxaphospholan-5-yl)benzamide as a yellow solid. The title compound was obtained as a-1:1 mixture of diastereosiomers. MS: cal'd 413 (NE+), exp 413 (MH+).

Procedures for T. Preparation of a J3-unsaturated benzamides.

O O
P ~ O~
HO' O ~
~
/
tert-butyl (2E)-3-{3-[hydroxy(methoxy)phosphoryl]phenyl)acrylate. Dimethyl phosphite (0.089 ml, 0.971 mmol), tert-butyl (2E)-3-(3-bromophenyl)acrylate (0.25 g, 0.883 mmol), triethylamine (0.369 ml, 2.65 mmol) and tetrakis(triphenylphosphine)palladium(0) (0.153 g, 0.132 mmol) were combined and allowed to heat for approximately eight hours at 100 C. The reaction was cooled and filtered over celite, washing with ethyl acetate. The filtrate was concentrated under reduced presesure. The residue was purified by column chromatography on silica gel, eluting with EtOAc/hexane, followed by CH2CI2/MeOH. MS: calc'c 299 (MH+), exp 299 (MH+).
O O ~
O,O ~ ~ \ O
i , tert-butyl (2E)-3-[3-(dimethoxyphosphoryl)phenyl]acrylate. tert-butyl (2E)-3-{3-[hydroxy(methoxy)phosphoryl]phenyl}acrylate was dissolved in methanol (8 ml).
BOP (0.4958 g, 1.121 mmol) and Hunig's base (0.2 ml, 1.145 mmol) were added. DMF (2 ml) was added.
The reaction was allowed to stir overnight at room temperature. The reaction was not complete.
The reaction was partially concentrated under reduced pressure. BOP (0.4836 g, 1.093 mmol) and Hunig's base (0.2 ml, 1.145 mmol) were added. The reaction was allowed to stir. After several hours additional BOP (0.495 g, 1.119 mmol) and Hunig's base (0.2 ml, 1.145 mmol) were added. The reaction was allowed to stir ovemight at room temperature. The reaction was concentrated under reduced pressure. The residue was dissolved in ethyl acetate and washed with saturated aqueous sodium hydrogen carbonate. The residue was purified by column chromatography on silica gel, eluting with EtOAc/hexane. MS: calc'd 313 (MH+), exp 313 (MH+).
O O
O' P ~ \ OH
O
(2E)-3-[3-(dimethoxyphosphoryl)phenyl]acrylic acid. tert-butyl (2E)-3-[3-(dimethoxyphosphoryl)phenyl]acrylate was dissolved in dichloromethane (6 ml).
TFA (3 ml, 38.9 mmol) was added. The reaction was allowed to stir for approximately one and a half hours.

The reaction was complete as indicated by LCMS. The reaction was diluted with DCM and washed with brine. The aqueous layer was extracted three times with DCM. The combined organic layer was dried over Na2SO42, filtered, and concentrated. MS: calc'd 257 (MH+), exp 257 (MH+).

~ S
O O /
AN ~ ~
H HNO
O
Dimethyl [3-((lE)-3-{[2-[(tert-butoxycarbonyl)aminoj-5-(2-thienyl)phenyl]amino}-3-oxoprop-l-en-l-yl)phenyl]phosphonate. (2E')-3-[3-(dimethoxyphosphoryl)phenyl]acrylic acid (0.0735 g, 0.287 mmol) was dissolved in DMF (3 ml). EDC (0.0706 g, 0.368 mmol) and HOBT
(0.0993 g, 0.648 mmol) were added. The mixture was allowed to stir briefly.
tert-butyl [2-amino-4-(2-thienyl)phenyl]carbamate (0.1333 g, 0.459 mmol) was added. The reaction was allowed to stir at 60 C. After approximately six hours EDC (0.0912 g, 0.476 mmol) and HOBT
(0.0906 g, 0.592 mmol) were added. The reaction was allowed to stir over the weekend at 60 C.
The reaction was filtered and diluted with methanol. The residue was purified by preparative HPLC Reverse phase (C-18), eluting with Acetonitrile/Water (+0.025% TFA).
Fractions containing the product were diluted with ethyl acetate and washed with saturated aqueous sodium hydrogen carbonate. The aqueous layer was extracted three times with ethyl acetate.
The combined organic layer was dried over Na2SO4, filtered, and concentrated.
MS: calc'd 429 (MH+-Boc), exp 429 (MH+-Boc).

S
O O
Or N
O

Dimethyl [3-((]E)-3-{[2-amino-5-(2-thienyl)phenyl)amino}-3-oxoprop-l-en-1-yl)phenyl]phosphonate. Dimethyl [3-((1E)-3-{[2-[(tert-butoxycarbonyl)amino]-5-(2-thienyl)phenyl]amino}-3-oxoprop-l-en-l-yl)phenyl]phosphonate (0.011 g, 0.021 mmol) was dissolved in dichloromethane. TFA (0.5 ml, 6.49 mmol) was added. The reaction was allowed to stir until complete as indicated by LCMS. The reaction was diluted with DCM
and washed with saturated aqueous sodium hydrogen carbonate. The aqueous layer was extracted three times with DCM. The combined organic layer was dried over Na2SO4, filtered, and concentrated. 'H NMR
(DMSO-d6, 600 MHz) S 9.42 (s, 1 H) 7.95 (d, J= 13.8 Hz, 1 H), 7.85 (d, J= 7.9 Hz, 1 Hz), 7.70-7.68 (m, 2H), 7.62-7.59 (n1, 2H), 7.32 (d, J= 4.4 Hz, 1 H), 7.21 (dd, J= 8.2 Hz, 2.1 Hz, 1 H), 7.19 (d, J= 3.1 Hz, 1 H), 7.03-6.99 (m, 2H), 6.75 (d, J= 8.5 Hz, 1 H), 5.20 (s, 2H), 3.66 (d, J = 11.2 Hz, 6H). MS: calc'd 429 (MH+), exp 429 (MH+).

$riuk tert-butyl (2E)-3-{3-[ethoxy(methyl)phosphoryl]phenyl}acrylate. Diethyl methylphosphonite (0.15 ml, 0.992 mmol), tert-butyl (2E)-3-(3-bromophenyl)acrylate (0.25 g, 0.883 mmol), triethylamine (0.37 ml, 2.65 mmol), and tetrakis(triphenylphosphine)palladium(0) (0.1559 g, 0.135 mmol) were combined and allowed to heat at 100 C for approximately eight hours. The reaction was cooled and filtered over celite, washing with ethyl acetate. The filtrate was concentrated under reduced pressuure. The residue was purified by column chromatography on silica gel, eluting with EtOAc/hexane. MS: calc'd 311 (MH+), exp 311 (MH+).
Table 20. T; a, -unsaturated benzamides Cpd# Structure Name MS Salt Forms \ S Dimethyl [3-((lE)-3-{[2-amino-5-(2- cal'd 1 0 0 thienyl)phenyl]amino} 429(MH+), baFree se ~O,P \ -3-oxoprop-l-en-1- exp 429 ~O ~ H NH2 yl)phenyl]phosphonate - Ethyl [3-((lE)-3-{[2-~ S amino-5-(2-2 O O thienyl)phenyl]amino} cal'd 42eX Free P -3-oxoprop-l-en-1- (~ 27 p base ~o" N yl)phenyl]methylphos ~ H NH2 phinate The compounds in the above tables exhibit histone deacetylase inhibitory activity at concentrations of less than 5 M.

HDAC 1-Flae Assay:

Novel compounds were tested for their ability to inhibit histone deacetylase, subtype 1(HDAC 1) using an in vitro deacetylation assay. The enzyme source for this assay was an epitope-tagged human HDAC 1 complex immuno-purified from stably expressing mammalian cells. The substrate consisted of a commercial product containing an acetylated lysine side chain (BIOMOL Research Laboratories, Inc., Plymouth Meeting, PA). Upon deacetylation of the substrate by incubation with the purified HDAC1 complex, a fluorophore is produced that is directly proportional to the level of deacetylation. Using a substrate concentration at the Km for the enzyme preparation, the deacetylation assay was performed in the presence of increasing concentrations of novel compounds to semi-quantitatively determine the concentration of compound required for 50% inhibition (IC50) of the deacetylation reaction.

ATP Assay The novel compounds of the present invention were tested for their ability to inhibit proliferation of the human cervical cancer (HeLa) and colon carcinoma (HCT116) cells.
In this assay, also referred to as the Vialight Assay, cellular ATP levels are measured as a means of quantifying cellular proliferation. This assay makes use of a bioluminescent method from Cambrex (ViaLight PLUS, cat. #LT07-121). In the presence of ATP, luciferase converts luciferin to oxyluciferin and light. The amount of light produced (emission at 565nM) is measured and correlates with a relative amount of proliferation. Human cervical cancer (HeLa) or colon carcinoma (HCTl 16) cells were incubated with vehicle or increasing concentrations of compound for 48, 72 or 96 hours. Cell proliferation was quantified by adding the cell lysis reagent (provided in the Vialight assay kit) directly to culture wells, followed by addition of the ATP-monitoring reagent (containing luciferase/luciferin). The amount of light produced is then measured (emission at 565nM). The quantity of light produced, as measured by 565nM absorbance, is directly proportional to the number of living cells in culture.
While this invention has been particularly shown and described with references to embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the meaning of the invention described. Rather, the scope of the invention is defined by the claims that follow.

Claims (17)

1. A compound represented by Formula I:
Wherein Ring A is a 5- to 6- membered heteroaryl or 6-membered aryl;
With the proviso that Ring A is not tetrahydro-dioxo-pyrimidinyl;
Ring B is heteroaryl or aryl;
M is selected from:

D is a P(O) containing heterocyclyl, wherein the heterocyclyl is optionally substituted with at least one R11;

R1 and R2 are independently selected from -OR, -NR7R8, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C1-C10 alkenyl, substituted or unsubstituted C1-C10 alkynyl, substituted or unsubstituted C3-C10 cycloalkyl, -(CR a2)r R9, -ORC(O)OR, -O(CR a2)r R9, -O(CR a2)r C(O)NR7R8, -O(CR a2)r NR7R8, and -O(CR
a2)r OR;

or R1 and R2 together with the phosphorous atom to which they are attached form a phosphorous-containing heterocyclic ring, wherein the heterocyclic ring is optionally substituted with at least one R11;
or R2 and R6 together with the phosphorous and C atom to which they are respectively attached, form a heterocyclic ring, wherein the heterocyclic ring is optionally substituted with at least one R11;
or R1 and R4 together with the phosphorous and C atom to which they are respectively attached, form a heterocyclic ring, wherein the heterocyclic ring is optionally substituted with at least one R11;
R3 is independently selected from hydrogen, -OR, -NR7R8, -NO2, -CN; -C(O)NR7R8, -NR7R8C(O)R, C(O), C1-C7 alkyl, C1-C7 haloalkyl, C1-C7 haloalkyloxy, C1-C7 hydroxyalkyl, C1-C7 alkenyl, C1-C7 alkyl-C(=O)O-, C1-C7 alkyl-C(=O)-, C1-C7 alkynyl, halo, hydroxyalkoxy, C1-C7 alkyl-NHSO2-, C1-C7 alkyl-SO2NH-, C1-C7 alkylsulfonyl, C1-alkylamino or di(C1-C7)alkylamino;
R4 and R6 are independently of each other hydrogen, -OR, -NR7R8, halo, -CN, -C(O)NR7R8, -NR7R8C(O)R, -C(O)OR, -P(O)(OR)2, oxo, substituted or unsubstituted C1-C6 alkyl, substituted or unsubstituted C1-C4 alkenyl, substituted or unsubstituted C1-C4 alkynyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heteroaryl, substituted or unsubstituted heterocyclic or substituted or unsubstituted aryl;
or R4 and R6 together with the C atom to which they are attached form a heterocyclic or carbocyclic ring, which can be optionally substituted with at least one R11;
R5 is independently selected from hydrogen, OH, NH2, nitro, CN, amide, carboxyl, C1-C7 alkoxy, C1-C7 alkyl, C1-C7 haloalkyl, C1-C7 haloalkyloxy, C1-C7 hydroxyalkyl, C1-C7 alkenyl, C1-C7 alkyl-C(=O)O-, C1-C7 alkyl-C(=O)-, C1-C7 alkynyl, halo, hydroxyalkoxy, C1-C7 alkyl-NHSO2-, C1-C7 alkyl-SO2NH-, C1-C7 alkylsulfonyl, C1-C7 alkylamino or di(C1-C7)alkylamino or L2-R9, R7 and R8 are independently selected from hydrogen, C1-C7 alkyl, -C(O)O-C1-C7alkyl, -P(O)CR a2, -P(O)(OR)2, -(CR a2)r heteroaryl, -(CR a2)r heterocyclic, -(CR a2)r C3-C8 cycloalkyl and -(CR a2)r aryl, where alkyl, heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one R11 ;
R9 is independently selected from hydrogen, C1-C7 alkyl, heteroaryl, heterocyclic, aryl, and C3-C8 cycloalkyl, where alkyl, heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one R11;

R11 is independently selected from OH, NH2, nitro, CN, amide, carboxyl, C1-C7 alkoxy, C1-C7 alkyl, C1-C7 haloalkyl, C1-C7 haloalkyloxy, C1-C7 hydroxyalkyl, C1-C7 alkenyl, C1-C7 alkyl-C(=O)O-, C1-C7 alkyl-C(=O)-, C1-C7 alkynyl, halo, hydroxyalkoxy, C1-C7 alkyl-NHSO2-, C1-C7alkyl-SO2NH-, C1-C7 alkylsulfonyl, C1-C7 alkylamino or di(C1-C7)alkylamino;
R is independently H, C1-C7 alkyl, or C3-C10 cycloalkyl, where alkyl or cycloalkyl is optionally substituted with at least one R11;

R a is independently selected from H and C1-C7 alkyl, where C1-C7 alkyl is optionally substituted with at least one R11;
L1 is (CH2)r, ethenyl or cyclopropyl;

L2 is independently selected from a bond, C1-C4 alkylene, C1-C4 alkynyl, C1-C4 alkenyl, -O-, -S-, -N-, -C(=O)NH-, -NHC(=O)-, -NHC(=O)NH-, -SO2NH-, -NHSO2-, -SO2-, -C(=O)- or -C(=O)O- ;

L3 is a bond, -(CR a 2)r C(O)(CR a 2)r-, -(CR a2)r O(CR a2)r-, -(CR a2)r C(O)NR7(CR a2)r-, -(CR a 2)r NR7C(O)(CR a2)r-, -(CR a2)r NR7C(O)NR7(CR a2)r-, -(CR a2)r OC(O)NR7(CR a2)r-, -(CR a2)r NR7C(O)O(CR a2)r- or -(CR a2)r NR7(CR
a2)r-, -(CR4R6)n-;

L4 is a bond, -(CR a2)r C(O)(CR a2)r-, -(CR a2)r O(CR a2)r-, -(CR a2)r C(O)NR7(CR a2)r-, -(CR a2)r NR7C(O)(CR a2)r-, -(CR a2)r NR7C(O)NR7(CR a2)r-, -(CR a2)r OC(O)NR7(CR a2)r-, -(CR a2)r NR7C(O)O(CR a2)r or -(CR a2)r NR7(CR
a2)r-, -(CR4R6)n-;

X is SH or NH2;
Z is a bond, heteroaryl, heterocyclic, aryl, or C3-C8 cycloalkyl, where heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one R11;
n is 0, 1, 2, 3 or 4;
p is 1, 2, 3 or 4;
r is independently 0, 1, 2 or 3;
t is 1, 2, 3, or 4;
or a stereoisomer or pharmaceutically acceptable salt thereof.
2. The compound of claim 1, Wherein Ring A is a 5- to 6- membered heteroaryl or 6-membered aryl;
With the proviso that Ring A is not tetrahydro-dioxo-pyrimidinyl;
Ring B is heteroaryl or aryl;
M is selected from:

R1 and R2 are independently selected from -OR, -NR7R8, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C1-C10 alkenyl,, substituted or unsubstituted C1-C10 alkynyl, substituted or unsubstituted C3-C10 cycloalkyl, -(CR a2)r R9, -ORC(O)OR, -O(CR a2)r R9, -O(CR a2)r C(O)NR7R8, -O(CR a2)r NR7 R8, and -O(CR
a2)r OR;

or R1 and R2 together with the phosphorous atom to which they are attached form a phosphorous-containing heterocyclic ring, optionally substituted with at least one R11;
or R2 and R6 together with the phosphorous and C atom to which they are respectively attached, form a heterocyclic ring, optionally substituted with at least one R11;
or R1 and R4 together with the phosphorous and C atom to which they are respectively attached, form a heterocyclic ring, optionally substituted with at least one R11 ;
R3 is independently selected from hydrogen, -OR, -NR7R8, -NO2, -CN, -C(O)NR7 R8, -NR7 R8C(O)R, C(O), C1-C7 alkyl, C1-C7 haloalkyl, C1-C7 haloalkyloxy, C1-C7 hydroxyalkyl, C1-C7 alkenyl, C1-C7 alkyl-C(=O)O-, C1-C7 alkyl-C(=O)-, C1-C7 alkynyl, halo, hydroxyalkoxy, C1-C7alkyl-NHSO2-, C1-C7alkyl-SO2NH-, C1-C7alkylsulfonyl, C1-C7 alkylamino or di(C1-C7)alkylamino;
R4 and R6 are independently of each other hydrogen, -OR, -NR7R8, halo, -CN, -C(O)NR7R8, -NR7R8C(O)R, -C(O)OR, -P(O)(OR)2, oxo, substituted or unsubstituted C1-C6 alkyl, substituted or unsubstituted C1-C4 alkenyl, substituted or unsubstituted C1-C4 alkynyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heteroaryl, substituted or unsubstituted heterocyclic or substituted or unsubstituted aryl;
or R4 and R6 together with the C atom to which they are attached form a heterocyclic or carbocyclic ring, optionally substituted with at least one R11;
R5 is independently selected from hydrogen, OH, NH2, nitro, CN, amide, carboxyl, C1-C7 alkoxy, C1-C7 alkyl, C1-C7 haloalkyl, C1-C7 haloalkyloxy, C1-C7 hydroxyalkyl, C1-C7 alkenyl, C1-C7 alkyl-C(=O)O-, C1-C7 alkyl-C(=O)-, C1-C7 alkynyl, halo, hydroxyalkoxy, C1-C7 alkyl-NHSO2-, C1-C7 alkyl-SO2NH-, C1-C7 alkylsulfonyl, C1-C7 alkylamino or di(C1-C7)alkylamino or L2-R9, R7 and R8 are independently selected from hydrogen, C1-C7 alkyl, -C(O)O-C1-C7alkyl, -P(O)CR a2, -P(O)(OR)2, -(CR a2)r heteroaryl, -(CR a2)r heterocyclic, -(CR a2)r C3-C8 cycloalkyl and -(CR a2)r aryl, where alkyl, heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one R11;
R9 is independently selected from hydrogen, C1-C7 alkyl, heteroaryl and aryl, where alkyl, heteroaryl or aryl is optionally substituted with at least one R11;

R10 is independently selected from hydrogen, C1-C7 alkyl, -(CR a2)r heteroaryl, -(CR a2)r heterocyclic, -(CR a2)r C3-C8 cycloalkyl and -(CR a2)r aryl, where alkyl, heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one R11;

R11 is independently selected from OH, NH2, nitro, CN, amide, carboxyl, C1-C7 alkoxy, C1-C7 alkyl, C1-C7 haloalkyl, C1-C7 haloalkyloxy, C1-C7 hydroxyalkyl, C1-C7 alkenyl, C1-C7 alkyl-C(=O)O-, C1-C7 alkyl-C(=O)-, C1-C7 alkynyl, halo, hydroxyalkoxy, C1-C7 alkyl-NHSO2-, C1-C7 alkyl-SO2NH-, C1-C7 alkylsulfonyl, C1-C7 alkylamino or di(C1-C7)alkylamino;
R is independently H, C1-C7 alkyl, or C3-C10 cycloalkyl, where alkyl or cycloalkyl is optionally substituted with at least one R11;

R a is independently selected from H and C1-C7 alkyl, where C1-C7 alkyl is optionally substituted with at least one R11;

R b is independently selected from H and C1-C7 alkyl, where C1-C7 alkyl is optionally substituted with at least one R11;

L1 is (CH2)r, ethenyl or cyclopropyl;

L2 is independently selected from a bond, C1-C4 alkylene, C1-C4 alkynyl, C1-C4 alkenyl, -O-, -S-, -N-, -C(=O)NH-, -NHC(=O)-, -NHC(=O)NH-, -SO2NH-, -NHSO2-, -SO2-, -C(=O)- or -C(=O)O- ;

L3 is a bond, -(CR a2)r C(O)(CR a2)r-, -(CR a2)r O(CR a2)r-, -(CR a2)r C(O)NR7(CR a2)r-, -(CR a2)r NR7C(O)(CR a2)r-, -(CR a2)r NR7 C(O)NR7 (CR a2)r-, -(CR a2)r OC(O)NR7(CR a2)r-, -(CR a2)r NR7C(O)O(CR a2)r- or -(CR a2)r NR7(CR
a2)r -, -(CR4R6)n-;

L4 is a bond, -(CR a2)r C(O)(CR a2)r-, -(CR a2)r O(CR a2)r-, -(CR a2)r C(O)NR7(CR a2)r-, -(CR a2)r NR7C(O)(CR a2)r-, -(CR a2)r NR7C(O)NR 7 (CR a2)r-, -(CR a2)r OC(O)NR7(CR a2)r-, -(CR a2)r NR7C(O)O(CR a2)r or -(CR a2)r NR7(CR
a2)r -(CR4R6)n-;

X is SH or NH2;

Z is a bond, heteroaryl, heterocyclic, aryl, or C3-C8 cycloalkyl, where heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one R11;
n is 0, 1, 2, 3 or 4;
p is 1, 2, 3 or 4;
q is 1 or 2;
r is independently 0, 1, 2 or 3;
t is 1, 2, 3, or 4;
or a stereoisomer or pharmaceutically acceptable salt thereof.
3. The compound of claim 2, Wherein Ring A is a 5- to 6- membered heteroaryl or 6-membered aryl;
With the proviso that Ring A is not tetrahydro-dioxo-pyrimidinyl;
Ring B is heteroaryl or aryl;
M is selected from:

R1 and R2 are independently selected from -OR, -NR7R8, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C1-C10 alkenyl, substituted or unsubstituted C1-C10 alkynyl, substituted or unsubstituted C3-C 10 cycloalkyl, -(CR a2)r R9, -ORC(O)OR, -O(CR a2)r R9, -O(CR a2)r C(O)NR7R8, -O(CR a2)r NR7R8, and -O(CR
a2)r OR;

or R1 and R2 together with the phosphorous atom to which they are attached form a phosphorous-containing heterocyclic ring;
or R2 and R6 together with the phosphorous and C atom to which they are respectively attached, form a heterocyclic ring;
or R1 and R4 together with the phosphorous and C atom to which they are respectively attached, form a heterocyclic ring;
R3 is independently selected from hydrogen, -OR, -NR7R8, -NO2, -CN, -C(O)NR7R8, -NR7R8C(O)R, C(O), C1-C7 alkyl, C1-C7 haloalkyl, C1-C7 haloalkyloxy, C1-C7 hydroxyalkyl, C1-C7 alkenyl, C1-C7 alkyl-C(=O)O-, C1-C7 alkyl-C(=O)-, C1-C7 alkynyl, halo, hydroxyalkoxy, C1-C7 alkyl-NHSO2-, C1-C7 alkyl-SO2NH-, C1-C7 alkylsulfonyl, C1-alkylamino or di(C1-C7)alkylamino;
R4 and R6 are independently of each other hydrogen, -OR, -NR7R8, halo, -CN, -C(O)NR7R8, -NR7R8C(O)R, -C(O)OR, -P(O)(OR)2, oxo, substituted or unsubstituted C1-C6 alkyl, substituted or unsubstituted C1-C4 alkenyl, substituted or unsubstituted C1-C4 alkynyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heteroaryl, substituted or unsubstituted heterocyclic or substituted or unsubstituted aryl;

or R4 and R6 together with the C atom to which they are attached form a heterocyclic or carbocyclic ring;
R5 is independently selected from hydrogen, OH, NH2, nitro, CN, amide, carboxyl, C1-C7 alkoxy, C1-C7- alkyl, C1-C7 haloalkyl, C1-C7 haloalkyloxy, C1-C7 hydroxyalkyl, C1-C7 alkenyl, C1-C7 alkyl-C(=O)O-, C1-C7 alkyl-C(=O)-, C1-C7 alkynyl, halo, hydroxyalkoxy, C1-C7 alkyl-NHSO2-, C1-C7 alkyl-SO2NH-, C1-C7 alkylsulfonyl, C1-C7 alkylamino or di(C1-C7)alkylamino or L2-R9, R7 and R8 are independently selected from hydrogen, C1-C7 alkyl, -(CR a2)r heteroaryl, -(CR a2)r heterocyclic, -(CR a2)r C3-C8 cycloalkyl and -(CR a2)r aryl, where alkyl, heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one R11;
R9 is independently selected from hydrogen, C1-C7 alkyl, heteroaryl, heterocyclic, aryl, and C3-C8 cycloalkyl, where alkyl, heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one R11 ;

R10 is independently selected from hydrogen, C1-C7 alkyl, -(CR a2)r heteroaryl, -(CR a2)r heterocyclic, -(CR a2)r C3-C8 cycloalkyl and -(CR a2)r aryl, where alkyl, heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one R11;

R11 is independently selected from OH, NH2, nitro, CN, amide, carboxyl, C1-C7 alkoxy, C1-C7 alkyl, C1-C7 haloalkyl, C1-C7 haloalkyloxy, C1-C7 hydroxyalkyl, C1-C7 alkenyl, C1-C7 alkyl-C(=O)O-, C1-C7 alkyl-C(=O)-, C1-C7 alkynyl, halo, hydroxyalkoxy, C1-C7 alkyl-NHSO2-, C1-C7 alkyl-SO2NH-, C1-C7 alkylsulfonyl, C1-C7 alkylamino or di(C1-C7)alkylamino;
R is independently H, C1-C7 alkyl, or C3-C10 cycloalkyl, where alkyl or cycloalkyl is optionally substituted with at least one R11;

R a is independently selected from H and C1-C7 alkyl, where C1-C7 alkyl is optionally substituted with at least one R11;

R b is independently selected from H and C1-C7 alkyl, where C1-C7 alkyl is optionally substituted with at least one R11;
L1 is (CH2)r, ethenyl or cyclopropyl;

L2 is independently selected from a bond, C1-C4 alkylene, C1-C4 alkynyl, C1-C4 alkenyl, -O-, -S-, -N-, -C(=O)NH-, -NHC(=O)-, -NHC(=O)NH-, -SO2NH-, -NHSO2-, -SO2-, -C(=O)- or -C(=O)O-;

L3 is a bond, -(CR a2)r C(O)-, -(CR a2)r O-, -(CR a2)r C(O)NR7-, -(CR a2)r NR7C(O)-, -(CR a2)r NR7C(O)NR7-, -(CR a2)rOC(O)NR7-, -(CR a2)r NR7C(O)O- or -(CR a2)r NR7-, -(CR4R6)n-;

L4 is a bond, -(CR a2)r C(O)-, -(CR a2)r O-, -(CR a2)rC(O)NR7-, -(CR a2)r NR7C(O)-, -(CR a2)r NR7C(O)NR7-, -(CR a2)r OC(O)NR7-, -(CR a2)r NR7C(O)O- or -(CR a2)r NR7-, -(CR4R6)n-;

X is SH or NH2;
Z is a bond, heteroaryl, heterocyclic, aryl, or C3-C8 cycloalkyl, where heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one R11;
n is 0, 1, 2, 3 or 4;
p is 1,2,3 or 4;
q is 1 or 2;
r is independently 0, 1, 2 or 3;
t is 1,2,3,or 4;
or a stereoisomer or pharmaceutically acceptable salt thereof.
4. The compound of claim 3, Wherein Ring A is a 5- to 6- membered heteroaryl or 6-membered aryl;
With the proviso that Ring A is not tetrahydro-dioxo-pyrimidinyl;
Ring B is heteroaryl or aryl;
M is selected from:

R1 and R2 are independently selected from -OR, -NR7R8, unsubstituted C1-C10 alkyl, unsubstituted C3-C10 cycloalkyl, -(CR a2)r R9, -ORC(O)OR, -O(CR a2)r R9, -O(CR a2)r C(O)NR7R8, -O(CR a2)r NR7R8, and -O(CR a2)r OR;

or R1 and R2 together with the phosphorous atom to which they are attached form a phosphorous-containing heterocyclic ring;
R3 is hydrogen;
R4 and R6 are independently of each other hydrogen, -OR, -NH2, halo, -CN, -C(O)NH2, -NH2C(O)R, -C(O)OR, -P(O)(OR)2, oxo, unsubstituted C1-C6 alkyl;

R5 is L2-R9;
R7 and R8 are independently selected from hydrogen, C1-C7 alkyl -(CR a2)r heteroaryl, -(CR a2)r heterocyclic, -(CR a2)r C3-C8 cycloalkyl and -(CR a2)r aryl, where alkyl, heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one R11;
R9 is independently selected from hydrogen, C1-C7 alkyl, heteroaryl and aryl, where heteroaryl, aryl or alkyl is optionally substituted with at least one R11;

R10 is independently selected from unsubstituted C1-C7 alkyl or unsubstituted aryl;

R11 is independently selected from C1-C7 alkyl, halo, CF3, OH or C1-C7 alkoxy;

R is independently H, C1-C7 alkyl, or C3-C10 cycloalkyl, where alkyl or cycloalkyl is optionally substituted with at least one R11;

R a is independently selected from H and C1-C7 alkyl, where C1-C7 alkyl is optionally substituted with at least one R11;

R b is independently selected from H and C1-C7 alkyl, where C1-C7 alkyl is optionally substituted with at least one R11;
L1 is (CH2)r or ethenyl;
L2 is a bond;

L3 is a bond, -(CR a2)r O-, -(CR a2)r C(O)-, -(CR a2)r NR7 -, -(CR4R6)n-;

L4 is a bond or -(CR4R6)n-;
X is NH2;
Z is a bond, heteroaryl, heterocyclic, aryl, or C3-C8 cycloalkyl, where heteroaryl, heterocyclic, aryl or cycloalkyl is optionally substituted with at least one R11;
n is 0, 1 or 2;
p is 1, 2, 3 or 4;
q is 1 or 2;
r is independently 0, 1, 2 or 3;
t is 1, 2, 3, or 4;
or a stereoisomer or pharmaceutically acceptable salt thereof.
5. The compound, according to Claim 3, represented by Formula II:
wherein R1 and R2 are independently selected from OH, NR7R8, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C1-C10 alkenyl, substituted or unsubstituted C1-C10 alkynyl, substituted or unsubstituted C1-C10 alkoxy, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heteroaryl, substituted or unsubstituted heterocyclic or substituted or unsubstituted aryl;
or R1 and R2 together with the phosphorous atom to which they are attached form a phosphorous-containing heterocyclic ring;
or R2 and R6 together with the phosphorous and Y atom to which they are respectively attached, form a heterocyclic ring;
or R1 and R4 together with the phosphorous and Y atom to which they are respectively attached, form a heterocyclic ring;
R3 is independently selected from hydrogen, OH, NH2, nitro, CN, amide, carboxyl, C1-C7alkoxy, C1-C7 alkyl, C1-C7 haloalkyl, C1-C7 haloalkyloxy, C1-C7 hydroxyalkyl, C1-C7 alkenyl, C1-C7 alkyl-C(=O)O-, C1-C7 alkyl-C(=O)-, C1-C7 alkynyl, halo, hydroxyalkoxy, C1-C7 alkyl-NHSO2-, C1-C7 alkyl-SO2NH-, C1-C7 alkylsulfonyl, C1-C7 alkylamino or di(C1-C7)alkylamino;

R4 and R6 are independently of each other hydrogen, OH, NR7R8, halo or substituted or unsubstituted C1-C4 alkyl, substituted or unsubstituted C1-C4 alkenyl, substituted or unsubstituted C1-C4 alkynyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heteroaryl, substituted or unsubstituted heterocyclic or substituted or unsubstituted aryl;
or R4 and R6 together with the Y atom to which they are attached form a heterocyclic or carbocyclic ring;
R5 is independently selected from hydrogen, OH, NH2, nitro, CN, amide, carboxyl, C1-C7 alkoxy, C1-C7 alkyl, C1-C7 haloalkyl, C1-C7 haloalkyloxy, C1-C7 hydroxyalkyl, C1-C7 alkenyl, C1-C7 alkyl-C(=O)O-, C1-C7 alkyl-C(=O)-, C1-C7 alkynyl, halo, hydroxyalkoxy, C1-C7 alkyl-NHSO2-, C1-C7 alkyl-SO2NH-, C1-C7alkylsulfonyl, C1-C7 alkylamino or di(C1-C7)alkylamino or L2-R9, wherein R9 is substituted or unsubstituted heteroaryl, substituted or unsubstituted heterocyclic, substituted or unsubstituted aryl, substituted or unsubstituted C3-C8 cycloalkyl, L2 is selected from a bond, C1-C4 alkylene, C1-C4 alkynyl, C1-C4 alkenyl, -O-, -S-, -N-, -C(=O)NH-, -NHC(=O)-, -NHC(=O)NH-, -SO2NH-, -NHSO2-, -SO2-, -C(=O)- or -C(=O)O- ;
R7 and R8 are independently selected from hydrogen, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heteroaryl, substituted or unsubstituted heterocyclic or substituted or unsubstituted aryl;
Ring A is a 5- to 6- membered heteroaryl or 6-membered aryl;
Ring B is heteroaryl or aryl;
n is 0, 1, 2, 3 or 4;
p is 1, 2, 3 or 4;
t is 1, 2, 3 or 4;
L1 is (CH2)r, ethenyl or cyclopropyl, wherein r is 0, 1 or 2;
X is SH or NH2;
Y is C or N;
With the proviso that Ring A is not tetrahydro-dioxo-pyrimidinyl;
or a stereoisomer or pharmaceutically acceptable salt thereof.
6. The compound of claim 5, wherein R1 and R2 are independently selected from OH, NR7 R8, substituted or unsubstituted C1-C4 alkyl, substituted or unsubstituted C1-C4 alkoxy, substituted or unsubstituted heteroaryl or substituted or unsubstituted aryl;
or R1 and R2 together with the phosphorous atom to which they are attached form a phosphorous-containing heterocyclic ring;
R3 is selected from hydrogen, OH, NH2, nitro, CN, amide, carboxyl, C1-C7 alkoxy, C1-C7 alkyl, C1-C7 haloalkyl, C1-C7 haloalkyloxy, C1-C7 hydroxyalkyl, C1-C7 alkenyl, C1-C7 alkyl-C(=O)O-, C1-C7 alkyl-C(=O)-, C1-C7 alkynyl, halo, hydroxyalkoxy, C1-C7 alkyl-NHSO2-, C1-C7 alkyl-SO2NH-, C1-C7 alkylsulfonyl, C1-C7 alkylamino or di(C1-C7)alkylamino;
R4 and R6 are independently of each other hydrogen, OH, NH2, halo or unsubstituted C1-C4 alkyl;
or R4 and R6 together with the Y atom to which they are attached form a heterocyclic or carbocyclic ring;
R5 is selected from hydrogen, OH, NH2, nitro, CN, amide, carboxyl, C1-C7 alkoxy, C1-C7alkyl, C1-C7haloalkyl, C1-C7 haloalkyloxy, C1-C7 hydroxyalkyl, C1-C7alkenyl, C1-C7alkyl-C(=O)O-, C1-C7 alkyl-C(=O)-, C1-C7 alkynyl, halo, hydroxyalkoxy, C1-C7alkyl-NHSO2-, C1-C7alkyl-SO2NH-, C1-C7alkylsulfonyl, C1-C7alkylamino or di(C1-C7)alkylamino or L2-R9, wherein R9 is substituted or unsubstituted heteroaryl, substituted or unsubstituted aryl, L2 is selected from a bond, C1-C4 alkylene, C1-C4 alkynyl, C1-C4 alkenyl, -O-, -S-, -N-, -C(=O)NH-, -NHC(=O)-, -NHC(=O)NH-, -SO2NH-, -NHSO2-, -SO2-, -C(=O)- or -C(=O)O- ;
R7 and R8 are independently selected from hydrogen, substituted or unsubstituted C1-C4 alkyl, substituted or unsubstituted heteroaryl or substituted or unsubstituted aryl;
Ring A is a 5- to 6- membered monocyclic heteroaryl or 6-membered monocyclic aryl;
Ring B is heteroaryl or aryl;
n is 0, 1, 2, 3 or 4;
p is 1, 2, 3 or 4;
t is 1, 2, 3 or 4;
L1 is (CH2)r, ethenyl or cyclopropyl, wherein r is 0, 1 or 2;
X is SH or NH2;
Y is C or N;
With the proviso that Ring A is not tetrahydro-dioxo-pyrimidinyl;
or a stereoisomer or pharmaceutically acceptable salt thereof.
7. The compound of claim 3, represented by the Formula IA:
Ring A is phenyl, pyridyl or pyrimidinyl;
Ring B is heteroaryl or aryl;
R1 and R2 are independently selected from -OR, unsubstituted C1-C10 alkyl, unsubstituted C3-C10 cycloalkyl, -(CRa2)rR9 or -O(CRa2)rR9;

R3 is hydrogen;
R4 and R6 are independently of each other hydrogen, -OR, -NH2, halo, -CN, -C(O)NH2, -NH2C(O)R, -C(O)OR, -P(O)(OR)2, oxo, unsubstituted C1-C6 alkyl;

R5 is L2-R9;
R9 is independently selected from hydrogen, C1-C7 alkyl, heteroaryl and aryl, where heteroaryl, aryl or alkyl is optionally substituted with at least one R11;

R11 is independently selected from C1-C7 alkyl, halo, haloalkyl, OH or C1-C7 alkoxy;

R is independently H, C1-C7 alkyl, or C3-C10 cycloalkyl, where alkyl or cycloalkyl is optionally substituted with at least one R11;

R a is independently selected from H and C1-C7 alkyl, where C1-C7 alkyl is optionally substituted with at least one R11;
L1 is (CH2)r or ethenyl;
L2 is a bond;

L3 is a bond, -(CRa2)rC(O)NR7-, -(CRa2)rNR7C(O)-, -(CR a2)rNR7C(O)NR7-, -(CR a2)rOC(O)NR7-, -(CR a2)r NR7C(O)O- or -(CR a2)rNR7 - or -(CR4R6)n-;

L4 is a bond or -(CR4R6)n-;
X is NH2;
Z is a bond;
n is 0, 1 or 2;
p is 1;

r is independently 0, 1, 2 or 3;
t is 1, 2, 3, or 4;
or a stereoisomer or pharmaceutically acceptable salt thereof.
8. The compound of claim 7, represented by Formula IB, R1 and R2 are independently selected from -OR or unsubstituted C1-C4 alkyl;
R4 and R6 are hydrogen;
R5 is L2-R9;
R9 is independently selected from hydrogen, unsubstituted or substituted heteroaryl, or unsubstituted or substituted aryl;

R a is independently selected from H and unsubstituted C1-C4 alkyl;
R is unsubstituted C1-C4 alkyl;

L3 is -(CRa2)rC(O)NR7-, -(CR a2)rOC(O)NR7-, or -(CRa2)rNR7-;
L4 is a bond or -(CR4R6)n-;

n is 0,or 2;
r is independently 0, 1, 2 or 3;
or a stereoisomer or pharmaceutically acceptable salt thereof.

9. The compound of claim 7, wherein R10, R11, and R13 are independently of each other hydrogen or fluoro.
R12 is hydrogen, substituted or unsubstituted phenyl or substituted or unsubstituted thienyl and X
is amino.

10. The compound of claim 7, wherein the R10 and R11 are independently of each other hydrogen or fluoro;
R12 is hydrogen, substituted or unsubstituted phenyl or substituted or unsubstituted thienyl and X is amino.
11. The compound of claim 9 or 10, wherein R12 is R17 and R21 are independently selected from hydrogen or fluoro;
R18, R19 or R20 are independently selected from hydrogen, halo, methyl, methoxy or halomethyl.

12. The compound of claim 9 or 10, wherein R12 is R22, R23 and R24 are independently selected from hydrogen, methyl, amino, hydroxyl, and halo.

13. The compound of claim 9 or 10, wherein R12 is R22, R23 and R24 are independently selected from hydrogen, methyl, amino, hydroxyl and halo.
14. The compound of claim 12, wherein Ring B is selected from phenyl, benzothiophenyl, benzofuranyl, thiazolyl, benzothiazolyl, furanyl, pyridyl, pyrimidyl, quinolinyl, thiophenyl, benzodioxyl, benzooxadiazolyl, quinoxalinyl, benzotriazolyl, benzoimidazolyl or benzooxazolyl.
15. A compound selected from:

Diethyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]phosphonate;
Diethyl[4-({[2-amino-5-(3-thienyl)phenyl]amino}carbonyl)phenyl]phosphonate;
Diethyl(4-{[(4-aminobiphenyl-3-yl)amino]carbonyl}phenyl)phosphonate;
Diethyl(4-{[(4-amino-1-phenyl-1H-pyrazol-3-yl)amino]carbonyl}phenyl)phosphonate;
Ethyl hydrogen[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]phosphonate;
Ethyl hydrogen (4-{[(4-amino-1-phenyl-1H-pyrazol-3-yl)amino]carbonyl}phenyl)phosphonate;
Methyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]phenylphosphinate;
Methyl [4-({[2-amino-5-(3-thienyl)phenyl]amino}carbonyl)phenyl]phenylphosphinate;
Methyl (4-{[(4-aminobiphenyl-3-yl)amino]carbonyl}phenyl)phenylphosphinate;
Ethyl[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]methylphosphinate;
Ethyl[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]phenylphosphinate;
Ethyl (4-{[(4-aminobiphenyl-3-yl)amino]carbonyl}phenyl)methylphosphinate;
Methyl[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]methylphosphinate;
2-(ethylsulfonyl)ethyl[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]

methylphosphinate;
3-hydroxy-3-methylbutyl[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]
methylphosphinate;
Cyclobutyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]
methylphosphinate;
Ethyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]ethylphosphinate;
Ethyl [5-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)pyridin-2-yl]methylphosphinate;
N-(2-Amino-5-thiophen-2-yl-phenyl)-4-(diisopropyl-phosphinoyl)-benzamide;
N-[2-Amino-5-(2-thienyl)phenyl]-4-[(1-methyl-4-oxido-1,4-azaphosphinan-4-yl)methyl]benzamide;
N-(2-Amino-5-thiophen-2-yl-phenyl)-4-(dimethyl-phosphinoyl)-benzamide;
N-(2-Amino-5-phen-2-yl-phenyl)-4-(dimethyl-phosphinoyl)-benzamide;

[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-phosphonic acid dimethyl ester;
[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-phosphonic acid diethyl ester;
[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-phosphonic acid monomethyl ester;
[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-phosphonic acid monoethyl ester;
[4-(4-Amino-l-phenyl-1H-pyrazol-3-ylcarbamoyl)-benzyl]-phosphonic acid diethyl ester;
[4-(2-Amino-5-thiophen-3-yl-phenylcarbamoyl)-benzyl]-phosphonic acid diethyl ester;
[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-phosphonic acid diethyl ester;
N-[2-amino-5-(2-thienyl)phenyl]-4-[(5,5-dimethyl-2-oxido-1,3,2-dioxaphosphinan-2-yl)methyl]
benzamide;
Diisopropyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]phosphonate;
Diethyl [3-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]phosphonate;
Methyl tetrahydro-2H-pyran-4-ylmethyl[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl) benzyl]phosphonate;
Methyl P-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]-N-1,3-thiazo ylphosphonamidoate;
Ethyl {[[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl](methoxy)phosphoryl]
oxy}acetate;
Diethyl (4-{[(4-aminobiphenyl-3-yl)amino]carbonyl}benzyl)phosphonate;
Methyl pyridin-3-ylmethyl[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]
phosphonate;
Methyl P-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]-N-benzylphosphonamidoate;
Methyl P-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]-N-(pyridin-3-ylmethyl)phosphonamidoate;
Dibenzyl[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]phosphonate;
2-amino-2-oxoethyl methyl[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]
phosphonate;
2-amino-2-methylpropyl methyl[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]
phosphonate;
3-hydroxy-3-methylbutyl methyl[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]
phosphonate;
Tetraethyl {[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]methylene}bis (phosphonate);

Diethyl [[4-({[2-amino-5-(2-thienyl)phenyl]amino)carbonyl)phenyl](cyano)methyl]
phosphonate;
Methyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl](diethoxyphosphoryl)acetate;
Methyl 3-[4-({[2-amino-5-(2-thienyl)phenyl]amino)carbonyl)phenyl]-2-(dimethoxyphosphoryl) propanoate;
Diethyl {2-[4-( {[2-amino-5-(2-thienyl)phenyl]amino) carbonyl)phenyl]-1-cyanoethyl}
phosphonate;
Tetraethyl {2-[4-( {[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]ethane-1,1-diyl} bis(phosphonate);
Diethyl {2-amino-I-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]-2-oxoethyl }phosphonate;
[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-phenyl-phosphinic acid methyl ester;
[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-phenyl-phosphinic acid;
[4-(2-Amino-5-thiophen-3-yl-phenylcarbamoyl)-benzyl]-phenyl-phosphinic acid methyl ester;
[4-(4-Amino-l-phenyl-lH-pyrazol-3-ylcarbamoyl)-benzyl]-phenyl-phosphinic acid methyl ester;
[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-methyl-phosphinic acid ethyl ester;
[4-(4-Amino-biphenyl-3-ylcarbamoyl)-benzyl]-methyl-phosphinic acid ethyl ester;
[4-(4-Amino-biphenyl-3-ylcarbamoyl)-benzyl]-methyl-phosphinic acid ethyl ester;
[4-(4-Amino-biphenyl-3-ylcarbamoyl)-benzyl]-methyl-phosphinic acid ethyl ester;
[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-benzyl]-methyl-phosphinic acid cyclobutyl ester;
Methyl [4-( {[2-amino-5-(2-thienyl)-phenyl]amino}-carbonyl)benzyl]-methylphosphinate;
Isopropyl [4-({[2-amino-5-(2-thienyl)-phenyl]amino}-carbonyl)benzyl]-methylphosphinate;
N-[2-Amino-5-(2-thienyl)phenyl]-4-( {methyl[(pyridin-3-ylmethyl)amino]-phosphoryl}methyl)-benzamide;
Pyridin-3-ylmethyl [4-( {[2-amino-5-(2-thienyl)phenyl]amino}-carbonyl)benzyl]methyl-phosphinate;
Methyl [4-({[2-amino-5-(2-thienyl)-phenyl]amino}-carbonyl)benzyl]-ethylphosphinate;
Ethyl [4-( {[2-amino-5-(2-thienyl)-phenyl]amino}-carbonyl)benzyl]-ethylphosphinate;
Isopropyl [4-({[2-amino-5-(2-thienyl)-phenyl]amino}-carbonyl)benzyl]-ethylphosphinate;
Cyclobutyl [4-({[2-amino-5-(2-thienyl)-phenyl]amino}-carbonyl)benzyl]-ethylphosphinate;
N-[2-Amino-5-(2-thienyl)phenyl]-4-( {ethyl[(pyridin-3-ylmethyl)amino]-phosphoryl} methyl)-benzamide;

Pyridin-3-ylmethyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}-carbonyl)benzyl]ethyl-phosphinate;
Cyclobutyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]phenylphosphinate;
Methyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl](4-fluorophenyl)phosphinate;
Methyl [3-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]phenylphosphinate;
Isopropyl [3-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]methylphosphinate;
Methyl [3-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]ethylphosphinate;
Ethyl[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]phenylphosphinate;
Isopropyl[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]phenylphosphinate;
2,2,2-trifluoroethyl[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]
phenylphosphinate;
Ethyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]isopropylphosphinate;
Ethyl[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]cyclopropylphosphinate;
3-hydroxy-3-methylbutyl[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]
phenylphosphinate;
2-amino-2-methylpropyl[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]

phenylphosphinate;
2-amino-2-oxoethyl[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]
phenylphosphinate;
Methyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]cyclopropylphosphinate;
Methyl (S)-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]methylphosphinate;
Methyl (R)-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]methylphosphinate;
Methyl (4-{[(4-aminobiphenyl-3-yl)amino]carbonyl}benzyl)methylphosphinate;
3-hydroxy-3-methylbutyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]
ethylphosphinate;
3-hydroxy-3-methylbutyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]
methylphosphinate;
2-(ethylsulfonyl)ethyl[4-({[2-amino-5-(2-thienyl)phenyl]amino}
carbonyl)benzyl]
methylphosphinate;
Diethyl {[5-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)pyridin-2-yl]methyl}phosphonate;
Diethyl {[5-({[2-amino-5-(3-thienyl)phenyl]amino}carbonyl)pyridin-2-yl]methyl}phosphonate;
Methyl {[5-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)pyridin-2-yl]methyl}
phenylphosphinate;

Methyl {[5-({[2-amino-5-(3-thienyl)phenyl]amino}carbonyl)pyridin-2-yl]methyl}
phenylphosphinate;
{[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-phenyl]-hydroxy-methyl}-phosphonic acid dimethyl ester;
{1-[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-phenyl]-1-fluoro-ethyl}-phosphonic acid dimethyl ester;
{1-[4-(2-Amino-5-thiophen-3-yl-phenylcarbamoyl)-phenyl]-1-fluoro-ethyl}-phosphonic acid dimethyl ester;
{1-[4-(4-Amino-biphenyl-3-ylcarbamoyl)-phenyl]-1-fluoro-ethyl}-phosphonic acid dimethyl ester;
{[4-(2-Amino-5-thiophen-3-yl-phenylcarbamoyl)-phenyl]-hydroxy-methyl}-phosphonic acid dimethyl ester;
{[4-(4-Amino-biphenyl-3-ylcarbamoyl)-phenyl]-hydroxy-methyl}-phosphonic acid dimethyl ester;
{[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-phenyl]-fluoro-methyl}-phosphonic acid dimethyl ester;
{Amino-[4-(2-amino-5-thiophen-2-yl-phenylcarbamoyl)-phenyl]-methyl}-phosphonic acid dimethyl ester;
{[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-phenyl]-hydroxy-methyl}-phenyl-phosphinic acid ethyl ester;
{1-[4-(2-Amino-5-thiophen-2-yl-phenylcarbamoyl)-phenyl]-1-fluoro-ethyl}-phenyl-phosphinic acid methyl ester;
{1-[4-(2-Amino-5-thiophen-3-yl-phenylcarbamoyl)-phenyl]-1-fluoro-ethyl}-phenyl-phosphinic acid methyl ester;
{1-[4-(4-Amino-biphenyl-3-ylcarbamoyl)-phenyl]-1-fluoro-ethyl}-phenyl-phosphinic acid methyl ester;
{[4-(2-Amino-5-thiophen-3-yl-phenylcarbamoyl)-phenyl]-hydroxy-methyl}-phenyl-phosphinic acid ethyl ester;
{[4-(4-Amino-biphenyl-3-ylcarbamoyl)-phenyl]-hydroxy-methyl}-phenyl-phosphinic acid ethyl ester;
N-(2-Amino-5-thiophen-2-yl-phenyl)-4-(diisopropyl-phosphinoylmethyl)-benzamide;
N-(2-Amino-5-thiophen-2-yl-phenyl)-4-(diethyl-phosphinoylmethyl)-benzamide;
N-(2-Amino-5-thiophen-2-yl-phenyl)-4-(dimethyl-phosphinoylmethyl)-benzamide;

N-[2-Amino-5-(2-thienyl)phenyl]-3-[(diethylphosphoryl)methyl]benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-[2-(dimethylphosphoryl)ethyl]benzamide;
Ethyl-{2-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]ethyl}methyl phosphinate;
N-[2-Amino-5-(2-thienyl)phenyl]-4-[(3-methyl-3-oxido-2,4-dioxa-9-aza-3-phosphaspiro[5.5]
undec-9-yl)methyl]benzamide;
N-[2-Amino-5-(2-thienyl)phenyl]-4-[(3-methyl-3-oxido-2,4-dioxa-9-aza-3-phosphaspiro[5.5]
undec-9-yl)carbonyl]benzamide;
N-[2-Amino-5-(2-thienyl)phenyl]-6-(3-methyl-3-oxido-2,4-dioxa-9-aza-3-phosphaspiro[5.5]
undec-9-yl)nicotinamide;
N-[2-amino-5-(2-thienyl)phenyl]-6-{2-[bis(dimethylamino)phosphoryl]-2,8 -diazaspiro[4.5]dec-8-yl}nicotinamide;
N-[2-Amino-5-(2-thienyl)phenyl]-4-[(4-oxido-4-phenyl-1,4-azaphosphinan-1-yl)methyl]
benzamide;
N-[2-Amino-5-(2-thienyl)phenyl]-4-[(4-oxido-4-phenyl-1,4-azaphosphinan-1-yl)carbonyl]
benzamide;
N-[2-Amino-5-(2-thienyl)phenyl]-6-(4-oxido-4-phenyl-1,4-azaphosphinan-1-yl)nicotinamide;
N-[2-Amino-5-(2-thienyl)phenyl]-4-[(4-ethyl-4-oxido-1,4-azaphosphinan-1-yl)methyl]
benzamide;
N-[2-Amino-5-(2-thienyl)phenyl]-4-[(4-ethyl-4-oxido-1,4-azaphosphinan-1-yl)carbonyl]
benzamide;
N-[2-Amino-5-(2-thienyl)phenyl]-6-(4-ethyl-4-oxido-1,4-azaphosphinan-1-yl)nicotinamide;
N-(4-aminobiphenyl-3-yl)-4-[(4-oxido-4-phenyl-1,4-azaphosphinan-1-yl)methyl]benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-[2-(4-oxido-4-phenyl-1,4-azaphosphinan-1-yl)ethyl]
benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-[2-(4-ethyl-4-oxido-1,4-azaphosphinan-1-yl)ethyl]
benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-[2-(4-oxido-4-phenyl-1,4-azaphosphinan-1-yl)-2-oxoethyl]
benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-[2-(4-ethyl-4-oxido-1,4-azaphosphinan-1-yl)-2-oxoethyl]
benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-{[[2-(dimethylphosphoryl)ethyl]
(methyl)amino] methyl}
benzamide;

N-[2-amino-5-(2-thienyl)phenyl]-4-{[[2-(diisopropylphosphoryl) ethyl](methyl) amino]methyl}
benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-{[[2-(diphenylphosphoryl) ethyl](methyl)amino] ethyl}
benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-6-[[2-(dimethylphosphoryl) ethyl](methyl)amino]
nicotinamide;
N-[2-amino-5-(2-thienyl)phenyl]-6-[[2-(diisopropylphosphoryl) ethyl](methyl)amino]
nicotinamide;
N-[2-amino-5-(2-thienyl)phenyl]-6-[[2-(diphenylphosphoryl) ethyl](methyl)amino]
nicotinamide;
N'-[2-amino-5-(2-thienyl)phenyl]-N-[2-(dimethylphosphoryl)ethyl]-N-methylterephthalamide;
N'-[2-amino-5-(2-thienyl)phenyl]-N-[2-(diisopropylphosphoryl) ethyl]-N-methylterephthalamide;
N-[2-amino-5-(2-thienyl)phenyl]-N-[2-(diphenylphosphoryl)ethyl]-N-methylterephthalamide;
N-[2-amino-5-(2-thienyl)phenyl]-6-{[2-(diisopropylphosphoryl) ethyl]amino}nicotinamide;
N-[2-amino-5-(2-thienyl)phenyl]-N'-[2-(diisopropylphosphoryl) ethyl]terephthalamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-({[2-(diisopropylphosphoryl) ethyl]amino}methyl) benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-N'-[2-(dimethylphosphoryl)ethyl]
terephthalamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-({[2-(dimethylphosphoryl) ethyl]amino}methyl) benzamide;
Methyl (4-{[(4-aminobiphenyl-3-yl)amino]carbonyl}benzyl)[2-(dimethylphosphoryl)ethyl]
carbamate;
Diethyl {1-[5-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)pyridin-2-yl]piperidin-4-yl}
phosphonate;
Diethyl (1-{[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]methyl}piperidin-4-yl) phosphonate;
Diethyl (1-{[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]carbonyl}piperidin-4-yl)phosphonate;
[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]methyl dimethylphosphinate;
2-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]ethyl ethyl methylphosphonate;
[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]methyl ethylmethylphosphonate;
[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]methyl methylphenylphosphonate;
N-[2-amino-5-(2-thienyl)phenyl]-4-({[(4R, 5 R)-4,5-dimethyl-2-oxido-1,3,2-dioxaphospholan-2-yl]oxy}methyl)benzamide;

4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl dimethylphosphate;
1-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]ethyl ethyl methylphosphonate;
1-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]ethyl methyl methylphosphonate;
1-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]ethyl methyl phenylphosphonate;
4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl ethylphenylphosphonate;

2-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]ethyl dimethylphosphinate;
2-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]ethyl methyl methylphosphonate;
1-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]-2,2,2-trifluoro-1-(trifluoromethyl)ethyl dimethylphosphinate;
4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl dimethylphosphinate;
(4-{[(4-aminobiphenyl-3-yl)amino]carbonyl}phenyl)methyldimethylphosphinate;
1-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]ethyldiethylphosphinate;
4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyldiethylphosphinate;
1-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]ethyldimethylphosphinate;
4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyldiisopropylphosphinate;
1-[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]ethyldiisopropylphosphinate;
Dimethyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]amidophosphate;
N-[2-amino-5-(2-thienyl)phenyl]-4-({[(4R, 5R )-4,5-dimethyl-2-oxido-1,3,2 -dioxaphospholan-2-yl]amino}methyl)benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-({[bis(dimethylamino)phosphoryl]amino}methyl) benzamide;
Dimethyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]amidophosphate;
Diethyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]amidophosphate;
Dimethyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]amidophosphate;
Dimethyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]methylamidophosphate;
Dimethyl (4-{[(4-aminobiphenyl-3-yl)amino]carbonyl}phenyl)methylamidophosphate;
N-[2-amino-5-(2-thienyl)phenyl]-4-[bis(dimethylphosphoryl)amino]benzamide;
Dimethyl {[({[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]amino}carbonyl) oxy]methyl} phosphonate;
4-(dimethylphosphoryl)benzyl (4-{[(4-aminobiphenyl-3-yl)amino]carbonyl}benzyl)carbamate;
[5-(dimethylphosphoryl)pyridin-3-yl]methyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}
carbonyl)benzyl]carbamate;

Diethyl ({[(4-{[(4-aminobiphenyl-3-yl)amino]carbonyl}phenyl)methyl][(methyloxy)carbonyl]
amino}methyl)phosphonate;
Diethyl {[({[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]amino}carbonyl) oxy]methyl}phosphonate;
Dimethyl {[({[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]amino}carbonyl) oxy]methyl}phosphonate;
Methyl {[({[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]amino}carbonyl) oxy]methyl}methylphosphinate;
Ethyl {[({[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]amino}carbonyl) oxy]methyl}methylphosphinate;
Ethyl {[({[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]amino}carbonyl) oxy]methyl}ethylphosphinate;
(dimethylphosphoryl)methyl [4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzyl]
carbamate;

Diethyl (4-{[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)benzoyl]amino}
phenyl)phosphonate;
Diethyl [({[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]carbonyl}
amino)methyl]phosphonate;
Diethyl [({[4-({[2-amino-5-(2-thienyl)phenyl]amino}carbonyl)phenyl]methyl}amino) methyl]phosphonate;
N-[2-amino-5-(2-thienyl)phenyl]-4-[(2s)-2-oxido-2-phenyl-1,3,2-dioxaphosphinan-5-yl]
benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-[(2r)-2-oxido-2-phenyl-1,3,2-dioxaphosphinan-5-yl]
benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-[(2s)-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl]
benzamide;
N-[2-amino-5-(2-thienyl)phenyl]-4-[(2r)-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl]
benzamide;
Dimethyl [3-((1E)-3-{[2-amino-5-(2-thienyl)phenyl]amino}-3-oxoprop-1-en-1-yl)phenyl]
phosphonate;
Ethyl [3-((1E)-3-{[2-amino-5-(2-thienyl)phenyl]amino}-3-oxoprop-1-en-1-yl)phenyl]
methylphosphinate;

Ethyl {3-[4-({[2-({[(1,1-dimethylethyl)oxy]carbonyl}amino)-5-(2-thienyl)phenyl]amino}
carbonyl)phenyl]-3-oxopropyl}methylphosphinate;
N-[2-amino-5-(2-thienyl)phenyl]-4-(2-methyl-2-oxido-1,2-oxaphospholan-5-yl)benzamide or the pharmaceutically acceptable salt or stereoisomer thereof.
16. A pharmaceutical composition comprising a pharmaceutically effective amount of the compound according to any one of Claims 1 to 15, and a pharmaceutically acceptable carrier.
17. The use of the compound according to any one of Claims 1 to 16 for the preparation of a medicament useful in the treatment or prevention of cancer in a mammal.
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AU2007275743A1 (en) 2008-01-24
US7981874B2 (en) 2011-07-19
EP2049124A2 (en) 2009-04-22
US20090270351A1 (en) 2009-10-29
WO2008010985A2 (en) 2008-01-24
WO2008010985A3 (en) 2008-04-03
JP2009544611A (en) 2009-12-17

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