A Highly Diastereoselective Synthesis of α-Hydroxy-β-amino Acid Derivatives via a Lewis Acid Catalyzed Three-Component Condensation Reaction
作者:Federico Gassa、Alessandro Contini、Gabriele Fontana、Sara Pellegrino、Maria Luisa Gelmi
DOI:10.1021/jo1011762
日期:2010.11.5
A very efficient three-component synthesis of a series of syn α-hydroxy-β-amino esters, obtained in high diastereoselection and yield, was realized starting from an aldehyde, benzylamine, and the ketene silyl acetals derived from Ley’s lactones. The synthetic protocol was optimized and the above compounds were obtained without the isolation of intermediates. The origin of the observed diastereoselection
一系列的非常高效的三组分合成顺式α羟基-β氨基酯,在高diastereoselection和产率获得,实现了由醛,苄胺,和从莱伊的内酯衍生的乙烯酮甲硅烷基缩醛开始。优化了合成方案,无需分离中间体即可获得上述化合物。通过关键反应步骤的计算模型研究了观察到的非立体定向的起源。