6β-methoxy-(20S)-methyl-3α,5-cyclo-5α-pregnan-21-ol p-toluenesulfonate 在
lithium aluminium tetrahydride 作用下,
以
四氢呋喃 为溶剂,
生成 (1aS,3aR,3bS,5aR,6R,8aS,8bS,10R,10aR)-6-Isopropyl-10-methoxy-3a,5a-dimethyl-hexadecahydro-cyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalene