Chiral and stereoselective total synthesis of (−)-mesembranol starting from D-glucose
作者:Noritaka Chida、Kohji Sugihara、Seiji Amano、Seiichiro Ogawa
DOI:10.1039/a604365h
日期:——
A chiral synthesis of the Sceletium alkaloid
(-)-mesembranol 1 is described. The cyclohexane ring in 1 is
prepared in an optically active form from D-glucose using
Ferrier’s carbocyclisation, and the critical stereochemistry of
the quaternary carbon in 1 is constructed stereoselectively via
chirality transfer by way of Claisen rearrangement of the
cyclohexenol derivative 14a. The perhydroindole skeleton in 1 is
effectively generated by intramolecular aminomercuriation of the
amino-olefin 18.
本文描述了斯凯莱蒂姆生物碱(-)-梅森布兰醇1的手性合成。1中的环己烷环是使用费里尔碳环化反应从D-葡萄糖制备的光学活性形式,并且1中第四碳的关键立体化学结构是通过环己烯醇衍生物14a的克莱森重排进行手性转移而构建的。1中的全氢化吲哚骨架是通过氨基烯烃18的分子内氨基汞化反应有效产生的。