3α-acetoxy-4,4-dimethyl-4aα,5-epoxy-A-homo-5α-cholesatane 在
氢溴酸 作用下,
以
氯仿 为溶剂,
反应 0.75h,
以3%的产率得到Acetic acid (1R,3aS,3bS,8R,10aR,10bS,12aR)-1-((R)-1,5-dimethyl-hexyl)-7,7,10a,12a-tetramethyl-1,2,3,3a,3b,7,8,9,10,10a,10b,11,12,12a-tetradecahydro-cyclohepta[a]cyclopenta[f]naphthalen-8-yl ester