Aiming at the application to photodynamic therapy, natural bacteriochlorophyll-a was converted to chemically stable free-base derivatives possessing different kinds of hydrophilic C17-propionate residues. These semi-synthetic bacteriochlorins were found to have self-assembling ability in an aqueous environment and formed stable J-type aggregates in a cell culture medium containing 0.2% DMSO. The electronic absorption spectra of all the sensitizers showed Q

Pyrobacteriopheophorbide‐<i>a</i> derivatives possessing various hydrophilic esterifying groups at the <scp>C17</scp>‐propionate residues for photodynamic therapy

Pyrobacteriopheophorbide‐a derivatives possessing various hydrophilic esterifying groups at the C17‐propionate residues for photodynamic therapy