3α-acetoxy-5β-chol-8(14)en-24-oic acid 在
草酰氯 作用下,
以
甲苯 为溶剂,
以450 mg的产率得到Acetic acid (3R,5R,9R,10S,13R,17R)-17-((R)-3-chlorocarbonyl-1-methyl-propyl)-10,13-dimethyl-2,3,4,5,6,7,9,10,11,12,13,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl ester