作者:Siti Aishah Hasbullah、Simon Jones
DOI:10.1016/j.tetasy.2010.10.021
日期:2010.11
approach for the asymmetric synthesis of pyroglutamic acid derivatives is described based on an anthracene chiral auxiliary. The introduction of a furan ring as a masked carboxylic acid moiety proceeded with excellent levels of diastereo-selectivity, followed by conversion into a carboxylate ester. The ensuing retro-Diels–Alder procedure using flash vacuum pyrolysis (FVP) followed by reduction gave pyroglutamate
基于蒽手性助剂描述了焦谷氨酸衍生物的不对称合成方法。呋喃环作为掩蔽的羧酸部分的引入以优异的非对映选择性水平进行,然后转化为羧酸酯。随后采用快速真空热解(FVP)进行还原的Diels-Alder逆反应,然后还原得到焦谷氨酸酯,收率好,对映选择性差,发现后者取决于N保护基的电子性质。