structural features, which include contiguous stereocenters, a highly oxygenated carbon framework, and a tricyclic ring system. We describe here a short and concise synthesis of the cyclopentane segment of kansuinine A via SmI2-mediated cyclization of δ-iodoester as a key construction method.
从植物大戟大戟中分离出来的坎苏宁A是一系列具有新型结构特征的麻疯树二萜之一,其中包括连续的立体中心,高度氧化的碳骨架和
三环系统。我们在这里描述了通过SmI 2介导的δ-
碘代酯环化的简明扼要的kansuinine A
环戊烷片段的合成方法。