Synthesis of Novel Amino Acids and Dehydroamino Acids Containing the Benzo[b]thiophene Moiety
作者:Ana S. Abreu、Natália O. Silva、Paula M. T. Ferreira、Maria-João R. P. Queiroz
DOI:10.1002/ejoc.200390212
日期:2003.4
Several novel amino acids and dehydroamino acids containing the benzo[b]thiophene moiety were prepared by Michael addition or sequential Michael addition and palladium-catalyzed C−C or C−N cross couplings. The substrates for Michael addition were the methyl esters of N,N-bis(tert-butyloxycarbonyl)dehydroalanine [Boc2−ΔAla−OMe] and N-(4-toluenesulfonyl)-N-(tert-butyloxycarbonyl)dehydroalanine [Tos−ΔAla(N-Boc)−OMe]