作者:Lukas M. Kreis、Erick M. Carreira
DOI:10.1002/anie.201108564
日期:2012.4.2
Cascading to alkaloids: An 18‐step total synthesis of (−)‐dendrobine is based on a reaction cascade with a key amine group (see scheme, Bn=benzyl). The amine is the initiator of the cascade and provides an efficient method for installing the stereocenters at C11 and C3. The overall transformation occurs stereoselectively only when the conversion is carried out without the isolation of intermediates
级联为生物碱:(-)-石end碱的18个步骤的总合成是基于与关键胺基的反应级联(参见方案,Bn =苄基)。胺是级联反应的引发剂,为在C11和C3处安装立构中心提供了有效的方法。仅当在不分离中间体的情况下进行转化时,整体转化才立体选择性地发生。