A trans or cis ethenyl group has been inserted between the α-carbon and the carboxyl group of α-aminoacids by Horner stereoselective olefination of α-aminoaldehydes. Numerous pure cis and trans vinylogous α-aminoacids have been obtained thus and coupled with aminopartners by classical methods. The versatility of the method was illustrated by the preparation of a [trans vinylogous-Gly3]Leu-enkephalin
通过α-
氨基醛的霍纳立体选择性烯化,将反式或顺式
乙烯基插入
α-氨基酸的α-碳和羧基之间。因此已经获得了许多纯的顺式和反式
乙烯基α-氨基酸,并通过经典方法与
氨基配偶体偶联。该方法的多功能性通过制备[反式
乙烯基-Gly 3 ]亮
脑啡肽来说明。