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