Doubly stereocontrolled cyclization of the allylsilane derivative 1 followed by trapping of the enolate with ClCH2SMe gives in one-pot manner the decalone derivatve 5 in which all of the four contiguous diastereomeric centers of -clerodane skeleton have been secured. The total synthesis of linaridial 4 have been accomplished from 5.
烯丙基
硅烷衍
生物1的双立体受控环化,然后用ClCH 2 SMe捕获烯醇化物,以单锅法得到十
氯丁烯衍
生物5,其中十环
烷烃骨架的四个连续非对映异构中心均已固定。
亚麻酸4的总合成已从5完成。