The first enantioselective total synthesis of (â)-sinularianin B, a structurally unique sesquiterpenoid isolated from the Formosan soft coral Sinularia sp., has been accomplished in 16 steps with 39.5% overall yield. Key transformations include formation of a cyclopentane possessing a tertiary hydroxy group via a tandem intermolecularâintramolecular alkylation involving a 5-endo cyclization.
首次对映体选择性全合成了(â)-sinularianin B,这是一种从台湾软珊瑚Sinularia sp.中分离出来的结构独特的
倍半萜类化合物,共分16步完成,总收率为39.5%。关键的转化过程包括通过分子间串联烷基化(涉及 5-endo 环化)形成具有三级羟基的
环戊烷。