3β,17β-di(dimethyltert-butylsilyloxy)androstane-6α-ol 、 3alpha,17beta-Di(dimethyltert-butylsilyloxy)androstane-6alpha-ol 在
tetrapropylammonium perruthenate
氮 、 SiO2 、
hexane-diethyl ether 作用下,
以
二氯甲烷 为溶剂,
反应 2.0h,
以to give 3β,17β-di(dimethyltert-butylsilyloxy)-androstane-6-one and 3α,17β-di(dimethyltert-butylsilyloxy)androstane-6-one (90/10 mixture, 6.30 g, 100%)的产率得到3β,17β-di(dimethyltert-butylsilyloxy)-androstane-6-one