(S)-2-[(3S,8S,9S,10R,13S,14S)-3-(tert-Butyl-dimethyl-silanyloxy)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]-hex-4-yn-3-one 在
B-isopinocampheyl-9-borabicyclo[3.3.1]nonane 作用下,
反应 92.0h,
生成 (2S,3S)-2-[(3S,8S,9S,10R,13S,14S)-3-(tert-Butyl-dimethyl-silanyloxy)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]-hex-4-yn-3-ol 、 (2S,3R)-2-[(3S,8S,9S,10R,13S,14S)-3-(tert-Butyl-dimethyl-silanyloxy)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]-hex-4-yn-3-ol