16α-(dimethylthexyl-silanyloxy)-17-(1,2-ethylene)-3-hydroxy-6-keto-7α-[9-(4,4,5,5,5-pentafluoro-n-pentyl)-thiononyl]-estra-1,3,5(10)-triene                                                                                                                                                              在
                                                                                                                                                                                 sodium tetrahydroborate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃   、                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                                                        以70%的产率得到1α-(dimethylthexyl-silanyloxy)-17-(1,2-ethylene)-3,6α-dihydroxy-7α-[9-(4,4,5,5,5-pentafluoro-n-pentyl)thiono-nyl]-estra-1,3,5(10)-triene