(-)-(1R,2R,3R,3aR,5aR,6aR,7S,10aS,10bR,10cR)-7-[3-(tert-butyldimethylsilanyloxy)-propyl]-1-hydroxy-2,5,7-trimethyl-3-triisopropylsilanyloxy-2,3,3a,5a,6,6a,7,10a,10b,10c-decahydro-1H-8-oxa-cyclopenta[c]fluorene-10-carboxylic acid methyl ester 在
碳酸氢钠 、
戴斯-马丁氧化剂 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以89%的产率得到(-)-(2S,3R,3aR,5aR,6aR,7S,10aS,10bR,10cR)-7-[3-(tert-butyldimethylsilanyloxy)-propyl]-2,3,3a,5a,6,6a,7,10a,10b,10c-decahydro-1-oxo-2,5,7-trimethyl-3-triisopropylsilanyloxy-1H-8-oxa-cyclopenta[c]fluorene-10-carboxylic acid methyl ester