作者:Yan Huang、Yong-Bo Zhang、Zhi-Ce Chen、Peng-Fei Xu
DOI:10.1016/j.tetasy.2006.11.033
日期:2006.11
A simple and diastereoselective method for the synthesis of (R)- and (S)-α-alkyl isoserines has been developed in four steps starting from commercially available d- and l-malic acid, respectively. This approach features stereocontrolled alkylation of 2-(2-tert-butyl-5-oxo-1,3-dioxolan-4-yl)acetic acid and proceeds through a methylcarbamate via a Curtius rearrangement.
已经分别从市售的d-和1-苹果酸开始以四个步骤开发了一种简单的非对映选择性的合成(R)-和(S)-α-烷基异丝氨酸的方法。该方法的特征在于2-(2-叔丁基-5-氧代-1,3-二氧戊环-4-基)乙酸的立体控制烷基化,并通过Curtius重排通过氨基甲酸甲酯进行。