Butyric acid (R)-1-[(3S,8S,9S,10R,13S,14S,17S)-10,13-dimethyl-3-(toluene-4-sulfonyloxy)-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]-ethyl ester 在
水 、
potassium acetate 作用下,
以
丙酮 为溶剂,
反应 6.0h,
以96%的产率得到Butyric acid (R)-1-((1aR,3aR,3bS,5aS,6S,8aS,8bS,10R,10aR)-10-hydroxy-3a,5a-dimethyl-hexadecahydro-cyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalen-6-yl)-ethyl ester