(S)-2-[(3S,5R,8S,9S,10R,13S,14S,17S)-3-(tert-Butyl-dimethyl-silanyloxy)-4,4,8,10,14-pentamethyl-hexadecahydro-cyclopenta[a]phenanthren-17-yl]-6-methyl-hept-5-en-2-ol 在
四丁基氟化铵 作用下,
以
四氢呋喃 为溶剂,
反应 10.0h,
以100%的产率得到(3S,5R,8R,9R,10R,13R,14R,17S)-17-[(2R)-2-hydroxy-6-methylhept-5-en-2-yl]-4,4,8,10,14-pentamethyl-2,3,5,6,7,9,11,12,13,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-ol