Acetic acid (3R,4R,5S,8R,9R,10R,13R,14S,17R)-17-((R)-1,5-dimethyl-hexyl)-10,13-dimethyl-hexadecahydro-20-oxa-cyclopropa[4,5]cyclopenta[a]phenanthren-3-yl ester 在
甲基碘化镁 作用下,
以
苯 为溶剂,
生成
3α,4α-Dihydroxy-5β,14β-dimethyl-18,19-bisnor-Δ13,17-8α,9β,10α-cholesten