Stereocontrolled synthesis and alkylation of cyclic β-amino esters: asymmetric synthesis of a (–)-sparteine surrogate
作者:Jean-Paul R. Hermet、Aurélien Viterisi、Jonathan M. Wright、Matthew J. McGrath、Peter O'Brien、Adrian C. Whitwood、John Gilday
DOI:10.1039/b712503h
日期:——
A convenient method for the stereoselective synthesis of cyclic beta-amino esters from an iodo alphabeta-unsaturated ester and alpha-methylbenzylamine is described. Subsequent enolate generation and alkylation proceeds with complete stereocontrol, with the two stereogenic centres working together. In this way, a functionalised piperidine suitable for alkaloid natural product synthesis was prepared
描述了一种方便的方法,用于从碘代字母不饱和酯和α-甲基苄基胺立体选择性地合成环状β-氨基酯。随后的烯醇化物生成和烷基化在完全立体控制的情况下进行,两个立体生成中心共同发挥作用。以这种方式,制备了适合于生物碱天然产物合成的官能化哌啶。该方法的有用性以(-)-天冬氨酸替代物的简明合成为例。