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