(2aS,4S,6aS,6bS,8R,8aR,8bS,9R,10R,11aS,12aS,12bR)-4-acetoxy-8b,11a-dihydroxy-10-((R)-4-hydroxy-3-methylbutyl)-6a,8a,9-trimethyloctadecahydro-1H-naphtho[2',1':4,5]indeno[2,1-b]furan-8-yl benzoate 在
三乙基硅烷 、
三氟化硼乙醚 作用下,
以
二氯甲烷 为溶剂,
反应 1.3h,
以55%的产率得到(2aS,4S,6aS,6bS,8R,8aR,8bS,9R,10R,11aS,12aS,12bR)-4-acetoxy-8b-hydroxy-10-((R)-4-hydroxy-3-methylbutyl)-6a,8a,9-trimethyloctadecahydro-1H-naphtho[2',1':4,5]indeno[2,1-b]furan-8-yl benzoate