(3S,5S,8S,10S,13S,14S,17S)-10,13-dimethyl-17-((R)-2-methyloxiran-2-yl)-2,3,4,5,6,7,8,10,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-ol 在
三氟化硼乙醚 、
水 、
碳酸氢钠 作用下,
以
二氯甲烷 为溶剂,
反应 0.5h,
以100%的产率得到(S)-2-((3S,5S,8S,10S,13S,14S,17R)-3-hydroxy-10,13-dimethyl-2,3,4,5,6,7,8,10,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)propanal