@article {435, title = {Evaluation of tetraphenyl-2,3-dihydroxychlorins as potential photosensitizers}, journal = {Journal of Porphyrins and Phthalocyanines}, volume = {6}, number = {2}, year = {2002}, note = {ISI Document Delivery No.: 595XYTimes Cited: 15Cited Reference Count: 33}, pages = {146-155}, type = {Article}, abstract = {A series of beta,beta-dihydroxychlorins derived from meso-tetraphenylporphyrins (TPPs) have been synthesized. Their in vitro cytotoxicity has been measured and compared to BPDMA (verteporfin). Under the assay conditions BPDMA had an LD50 (lethal dose to kill 50\% of cells) value of 0.007 muM (5 ng/mL). The LD50 values for the TPP derivatives varied from 1.7 x 10(-2) to 9.9 muM depending upon the substituents and their position on the phenyl groups. One example of the dihydroxychlorin prepared from unsubstituted 5,15-diphenylporphyrin was examined and this exhibited an LD50 of 2.4 x 10(-3) muM! Copyright (C) 2002 Society of Porphyrins \& Phthalocyanines.}, keywords = {AGGREGATION, BACTERIOCHLORINS, beta, beta-dihydroxychlorins, BIODISTRIBUTION, chlorins, cytotoxicity, DERIVATIVES, photodynamic, PHOTODYNAMIC THERAPY, PHOTOPHYSICAL PROPERTIES, PHOTOSENSITIZERS, porphyrins, PROTEIN-BINDING, SENSITIZERS, therapy, TUMOR PHOTOSENSITIZERS}, isbn = {1088-4246}, url = {://000178134600008}, author = {Macalpine, J. K. and Boch, R. and Dolphin, D.} } @article {4063, title = {Chemical modification of chlorophyll a: Synthesis of new regiochemically pure benzoporphyrin and dibenzoporphyrin derivatives}, journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie}, volume = {75}, number = {3}, year = {1997}, note = {ISI Document Delivery No.: XD813Times Cited: 10Cited Reference Count: 28}, month = {Mar}, pages = {262-275}, type = {Article}, abstract = {Starting from pheophorbide a methyl ester (5), a degradation product of chlorophyll a, routes for the preparation of 3-vinylporphyrins 6 and 9 and of an [A,C]-divinylporphyrin 16 are described. These porphyrins were obtained as a result of chemical modification of 5 on ring D and the exocyclic ring E. Diels-Alder reactions of these (di)vinylporphyrins with dimethyl acetylenedicarboxylate, to afford new regiochemically pure benzoporphyrin derivatives 29 and 30 and dibenzoporphyrin derivative 33 for potential use as sensitizers in photodynamic therapy of tumors, were also investigated.}, keywords = {(di)benzoporphyrins, (di)vinylporphyrins, chlorins, CHLOROPHYLL, CONVERSION, Diels-Alder, ESTERS, photodynamic, PHOTODYNAMIC THERAPY, ROUTE, therapy}, isbn = {0008-4042}, url = {://A1997XD81300003}, author = {Ma, L. F. and Dolphin, D.} }