甲基锂 、
(E)-(4S,5R,6S)-7-((S)-4-Benzyl-2-oxo-oxazolidin-3-yl)-5-(tert-butyl-dimethyl-silanyloxy)-4,6-dimethyl-7-oxo-hept-2-enoic acid ethyl ester 在
copper(l) iodide 、
二甲基硫 作用下,
以
乙醚 为溶剂,
反应 0.75h,
生成 (3S,4R,5S,6R)-4-(tert-Butyl-dimethyl-silanyloxy)-2-hydroxy-3,5,6-trimethyl-cyclohex-1-enecarboxylic acid ethyl ester 、
(2R,3S,4R,5S)-4-(tert-Butyl-dimethyl-silanyloxy)-2,3,5-trimethyl-6-oxo-cyclohexanecarboxylic acid ethyl ester