Synthesis of Rebeccamycin and 11-Dechlororebeccamycin
作者:Margaret M. Faul、Leonard L. Winneroski、Christine A. Krumrich
DOI:10.1021/jo982277b
日期:1999.4.1
Glycosylated 7-chloroindole-3-acetamide 9, prepared in four steps and 26% yield from 7-chloroindole (1), was condensed with methyl 7-chloroindole-3-glyoxylate 11 and methyl indole-3-glyoxylate 12 to provide bisindolylmaleimides 7 and 8 in 86% and 84% yield, respectively. Oxidation of 7 and 8 followed by debenzylation provided a new approach to the synthesis of rebeccamycin and completed for the first time a synthesis of 11-dechlororebeccamycin.
Microbial biotransformations of a synthetic immunomodulating agent, HR325
作者:Isabelle Lacroix、Jacques Biton、Robert Azerad
DOI:10.1016/s0968-0896(97)00094-1
日期:1997.7
alcohol, and has been fully characterized by independent synthesis. The different metabolic patterns of HR325 in the three fungal strains are discussed, and a mechanistic hypothesis about the oxidative cleavage of the right part of the molecule is proposed. The production of microbial metabolites is compared to animal metabolism in terms of structure and efficiency.