Use of Silyl Ester and Enamine Protection for an Efficient Alternate Synthesis of (1<i>S</i>,2<i>S</i>,5<i>R</i>,6<i>S</i>)-2-[(2′<i>S</i>)-(2′-Amino)propionyl]aminobicyclo[3.1.0]hexane-2,6-dicarboxylic Acid Hydrochloride (LY544344·HCl)
作者:Jared Fennell、Michael Semo、David Wirth、Radhe Vaid
DOI:10.1055/s-2006-942487
日期:2006.8
An alternate synthesis of title compound (5) using N-(2-methoxycarbonyl-1-methylvinyl)-l-alanine sodium salt (6) and 2-aminobicyclo[3.1.0]hexane-2,6-dicarboxylic acid (1) was successfully completed. Incorporation of silyl ester protection and the use of an enamine-protecting group allowed for the elimination of several processing steps.
使用 N-(2-甲氧基羰基-1-甲基乙烯基)-1-丙氨酸钠盐 (6) 和 2-氨基双环[3.1.0]己烷-2,6-二甲酸 (1) 替代合成标题化合物 (5)已顺利完成。甲硅烷基酯保护的结合和烯胺保护基的使用可以省去几个加工步骤。