作者:Michael Sefkow、Alexandra Kelling、Uwe Schilde
DOI:10.1016/s0040-4039(01)00907-8
日期:2001.7
A short and general synthesis of enantiomerically pure α-hydroxylated lactone lignans starting from commercially available iPr malate is presented. Key reactions are two stereoselective alkylations of malic acid derivatives. Some enhancements of the alkylation of malic acid esters and a general extension of the alkylation of dioxolanones is reported. Proof of the stereochemical outcome of the alkylation
对映体纯α羟基化内酯木脂素从商购的起始短而一般合成我镨苹果酸被呈现。关键反应是苹果酸衍生物的两个立体选择性烷基化。据报道,苹果酸酯的烷基化有一些增强,而二氧戊环酮的烷基化也有普遍的扩展。X-射线衍射分析α-羟基-α,β-二苄基-γ-丁内酯是对映体纯的α-羟基化内酯木脂体的第一个晶体结构,提供了烷基化反应的立体化学结果的证据。