A method of preparing stereodefined δ-/γ-alkoxy-β-hydroxy-α-alkyl-substituted Weinreb amides containing two successive hydroxyl-alkyl stereocenters has been developed. Further, this strategy coupled with organo-catalyzed asymmetric epoxidation culminates in the synthesis of a critical intermediate of (â)-brevisamide and its diastereomers.
一种制备立体定义的δ-/γ-烷
氧基-β-羟基-α-烷基取代的温雷布
酰胺的方法已经开发出来。此外,该策略结合了有机催化的不对称环
氧化反应,最终合成了(â)-布雷维
酰胺及其二叠体的关键
中间体。