Acetic acid (6S,7S,8R,9S,10R,13S,14S,17R)-7-acetoxy-17-acetyl-6-chloro-10,13-dimethyl-16-methylene-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl ester 在
盐酸 、
氢氧化钾 作用下,
以
甲醇 、
氯仿 为溶剂,
生成
6-chloro-17α-hydroxy-16-methylenepregna-4,6-diene-3,20-dione