在
甲醇 、
sodium methylate 作用下,
反应 2.0h,
以99%的产率得到(3S,8R,9S,10R,13S,14S,17S)-3-(tert-Butyl-dimethyl-silanyloxy)-17-hydroxy-10,13-dimethyl-17-(1-methyl-2,2-bis-phenylsulfanyl-ethyl)-1,2,3,4,7,8,9,10,11,12,13,14,15,17-tetradecahydro-cyclopenta[a]phenanthren-16-one