David Dolphin, Christian Bruckner
β,β'-Dihydroxy Meso-Substituted Chlorins, Isobacteriochlorins, and Bacteriochlorins
A β,β'-dihydroxy meso-substituted chlorin, bacteriochlorin or isobacteriochlorin compound having the formula (I) or (II):
where M is a metal. A novel method for synthesizing the compound of formula (I) or (II) comprises the steps of: a. osmylating a β,β'-unsubstituted, meso-substituted porphyrin to form an osmate ester at the β,β'-position, and b. reducing the osmate ester to form the corresponding β,β'-dihydroxy meso-substituted chlorin, bacteriochlo rin or isobacteriochlorin of formula (I) or (II).