(22R)-5β,6β-epoxy-24-methyl-5α-cholestan-3β,22,25-triol-3,22-diacetate 在
氯化亚砜 作用下,
以
吡啶 为溶剂,
反应 0.5h,
以80%的产率得到Acetic acid (3S,5S,6R,8S,9S,10R,13S,14S,17R)-17-((1S,2R)-2-acetoxy-1,4,5-trimethyl-hex-5-enyl)-10,13-dimethyl-hexadecahydro-20-oxa-cyclopropa[5,6]cyclopenta[a]phenanthren-3-yl ester