3β-acetoxy-5-etienic acid chloride 、
1-pyridin-2-yl-ethanethiol 在
三乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 44.5h,
生成 3β-acetoxy-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-17-carboxylic acid (R)-1-(2-pyridinyl)ethyl thioester 、 3β-acetoxy-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-17-carboxylic acid (S)-1-(2-pyridinyl)ethyl thioester