(1R,5S,6S,7R)-3-oxo-6-(tert-butyldiphenylsilyloxymethyl)-7-hydroxybicyclo<3.3.0>octane 、
(Dimethoxy-phosphoryl)-acetic acid (1S,2R,5S)-2-isopropyl-5-methyl-cyclohexyl ester 在
potassium tert-butylate 作用下,
以
四氢呋喃 、
甲苯 为溶剂,
反应 18.0h,
生成 [(3aS,4S,5R,6aS)-4-(tert-Butyl-diphenyl-silanyloxymethyl)-5-hydroxy-hexahydro-pentalen-(2E)-ylidene]-acetic acid (1S,2R,5S)-2-isopropyl-5-methyl-cyclohexyl ester