硒基氰酸4-硝基苯基酯 、 5α-Androstane-3β,17β-diol-17-dimethyl-tert.-butylsilyl-ether 在
三丁基膦 作用下,
以
四氢呋喃 为溶剂,
以65%的产率得到tert-Butyl-[(3R,8R,9S,10R,13S,14S,17S)-10,13-dimethyl-3-(4-nitro-phenylselanyl)-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yloxy]-dimethyl-silane