(5R)-3α-Acetoxy-17β-pivaloyloxy-3,6-cyclo-A-nor-3,5-seco-6β-androstan-5-ol                                                                                                                                                              在
                                                                                                                                                                                 
吡啶   、                                                                                                  lithium aluminium tetrahydride                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
1,4-二氧六环                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 (3S,3aS,6aS,9R,9aS,10aS,10bS)-3a,6-Dimethyl-1,2,3,3a,4,5,6a,7,8,9,9a,10,10a,10b-tetradecahydro-dicyclopenta[a,g]naphthalene-3,9-diol