A concise synthesis approach to optically active taxol C-ring fragment
作者:Masahisa Nakada、Ei-ichi Kojima、Yukitaka Iwata
DOI:10.1016/s0040-4039(97)10554-8
日期:1998.1
A concise syntheticapproach to an opticallyactive taxol C-ring fragment starting from a readily available compound is described. Lewis acid promoted-cyclization of opticallyactive epoxy trimethylsilane 7 affords the key intermediate 8 in 69% yield (at 91% conversion). Further transformation of 8 to our taxol C-ring fragment is successfully achieved in a stereoselective manner.