Synthesis of febrifugine derivatives and a solution to the puzzle of the structural determination of febrifugine
作者:Yasuo Takeuchi、Kumiko Azuma、Miyo Oshige、Hitoshi Abe、Hiromi Nishioka、Kenji Sasaki、Takashi Harayama
DOI:10.1016/s0040-4020(03)00139-x
日期:2003.3
The stereo-structure of piperidine lactone (3), a synthetic intermediate of the antimalarial agent febrifugine ((+)-1) with a piperidine ring in the trans relative configuration, was re-revised to the cis-form. We determined that isomerization to the trans-form from the cis-form occurred in the stage (6 from 5) of deprotection in Baker's synthesis.
哌啶内酯(3)的立体结构被重新修订为顺式,哌啶内酯(3)是抗疟药febrifugine((+)- 1)的合成中间体,其哌啶环呈反式构型。我们确定了贝克合成中脱保护阶段(从5变6)发生了从顺式到反式的异构化。