Regioselective synthesis of 3-aryl-5-(1H-indole-3-carbonyl)-4-hydroxyfuroic acids as potential insulin receptor activators
作者:Shan-Yen Chou、Shieh-Shung Tom Chen、Ching-Hui Chen、Lien-Shange Chang
DOI:10.1016/j.tetlet.2006.08.076
日期:2006.10
5-dicarboxylic acid (8) is selectively converted into its C-5 methylester (6) by treatment with methyl chloroformate followed by decarboxylation in one flask. Acylation of the resulting half ester with a 7-substituted indole was performed under mild conditions to afford 3-aryl-5-(1H-indole-3-carbonyl)-4-methoxy-2-furoic acid (11). The synthetic utility of the resulting furoicacids as a skeleton in