环庚酮二乙缩醛 、
4-Chloro-benzoic acid (8R,9S,13S,14S,17S)-17-hydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-3-yl ester 在
对甲苯磺酸 作用下,
以
甲苯 为溶剂,
生成 4-Chloro-benzoic acid (8R,9S,13S,14S,17S)-17-(cyclohept-1-enyloxy)-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-3-yl ester