A group of hydro-dibenzoporphyrins prepared by di-Diels-Alder additions at the A and C rings of the appropriate divinyl porphyrins have absorption maxima in the range of 700-820 nanometers and are photosensitizing agents. These compounds are useful in treating disorders or conditions which are subject...http://www.google.fr/patents/US5308608?utm_source=gb-gplus-shareBrevet US5308608 - Photosensitizing Diels-Alder porphyrin derivatives
