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A first comparative study of purpurinimide-based fluorinated vs. nonfluorinated photosensitizers for photodynamic
Amy L Gryshuk1, Andrew Graham, Suresh K Pandey
1Photodynamic Therapy Center, Roswell Park Cancer Institute, Buffalo, NY 14263, USA.
Photochemistry and Photobiology
|December 5, 2002
Abstract:
A first report on the synthesis and comparative in vitro-in vivo photosensitizing efficacy of various fluorinated and the corresponding nonfluorinated, purpurinimide-based photosensitizers is discussed. In preliminary in vivo screening, compared with the nonfluorinated analogs, purpurinimides bearing trifluoromethyl substituents showed enhanced photosensitizing efficacy. Among compounds (isomers) with similar lipophilicity, the position of the substituents was found to play a decisive role in biological efficacy.