@article {3753, title = {Synthesis and spectral studies of natural chlorins having antioxidative activity}, journal = {Pure and Applied Chemistry}, volume = {68}, number = {3}, year = {1996}, note = {ISI Document Delivery No.: UM994Times Cited: 3Cited Reference Count: 1510th International Conference on Organic SynthesisDEC 11-16, 1994BANGALORE, INDIAInt Union Pure \& Appl Chem, Organ Chem Div, Indian Natl Sci Acad, Natl Organ Symp Trust, India, Indian Inst Sci, Jawaharlal Nehru Ctr Adv Sci Res}, month = {Mar}, pages = {765-769}, type = {Proceedings Paper}, abstract = {Starting from pheophorbide a methyl ester (1), a degradation product of chlorophyll a, novel natural antioxidants of chlorophyll a related chlorins 3, 5(S), 5(R), 8(R), 9-13 have been synthesized in high yields. Key steps involve formation of 5(R) and 5(8) via a DBU-promoted asymmetric hydroxylation of 3, and regioselective periodate oxidations of 5 to 8(R) and 9.}, keywords = {COMPOUND, enol, RUDITAPES-PHILIPPINARUM}, isbn = {0033-4545}, url = {://A1996UM99400059}, author = {Ma, L. F. and Dolphin, D.} }