Acetic acid (3S,5R,7S,8R,9S,10S,11S,13R,14R,17R)-11-hydroxy-10,13-dimethyl-17-((1R,4S)-1,4,5-trimethyl-hexyl)-hexadecahydro-20-oxa-cyclopropa[7,8]cyclopenta[a]phenanthren-3-yl ester 在
lithium aluminium tetrahydride 作用下,
以
乙醚 为溶剂,
生成
3β,8β,11β-Trihydroxy-5α-ergostan