(3S,5R,9S,10R,13S,14R,15S,17R)-3-(tert-Butyl-dimethyl-silanyloxy)-4,4,8,10-tetramethyl-17-(5-methyl-1-triethylsilanyloxy-hex-4-enyl)-hexadecahydro-cyclopropa[14,15]cyclopenta[a]phenanthren-16-one 在
氨 、
水 、
lithium 作用下,
以
四氢呋喃 为溶剂,
反应 0.67h,
以92%的产率得到(3S,5R,9S,10R,13S,14S,16S,17S)-3-(tert-Butyl-dimethyl-silanyloxy)-4,4,8,10,14-pentamethyl-17-(5-methyl-1-triethylsilanyloxy-hex-4-enyl)-hexadecahydro-cyclopenta[a]phenanthren-16-ol