| abstract |
(57) [Summary] (1) The following general formula (1): (Wherein 1 to 3 of ring A, ring B, ring C and ring D are N A quaternary ammonium salt of a zinc alkylbenzopyridoporphyrazine represented by the formula:-an alkylpyridine ring, the remainder being a dialkylbenzene ring and X being an anion); and a photodynamic therapeutic or diagnostic agent containing the same. . The compound (1) of the present invention has a maximum absorption at 660 to 710 nm, has an extremely long triplet lifetime, has an action of generating active oxygen with high efficiency, and is amphiphilic. Therefore, it has good permeability into cells and is useful as a photosensitizer for photodynamic therapy or diagnosis. |