(1aR,3aR,3bS,5aS,8aS,8bR,10R)-6-Benzenesulfinylmethyl-10-methoxy-3a,5a-dimethyl-1,1a,2,3,3a,3b,4,5,5a,8,8a,8b,9,10-tetradecahydro-cyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalene 在
间氯过氧苯甲酸 作用下,
以
氯仿 为溶剂,
以76%的产率得到20-(phenylsulfonyl)-6β-methoxy-3α,5-cyclo-21-nor-5α-pregn-16-ene