叔丁基二甲硅基三氟甲磺酸酯   、                                                                                      
(3S,5R,8R,9S,10S,13R,14R)-3-(tert-Butyl-dimethyl-silanyloxy)-4,4,8,10,13-pentamethyl-tetradecahydro-cyclopenta[a]phenanthrene-7,17-dione                                                                                                                                                              在
                                                                                                                                                                                 
双(三甲基硅烷基)氨基钾                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                    反应 0.75h,
                                                                                                                生成                                                 (3S,5R,8R,9S,10S,13R,14R)-3,17-Bis-(tert-butyl-dimethyl-silanyloxy)-4,4,8,10,13-pentamethyl-1,2,3,4,5,6,8,9,10,11,12,13,14,15-tetradecahydro-cyclopenta[a]phenanthren-7-one