(2S,3R,5R,8S,9S,10R,13R,14S,17R)-17-((R)-1,5-Dimethyl-hexyl)-4,4,10,13-tetramethyl-hexadecahydro-20-oxa-cyclopropa[2,3]cyclopenta[a]phenanthrene 在
potassium fluoride 、
氢氟酸 作用下,
以
二氯甲烷 为溶剂,
生成
(2S,3S,4S,5S,8S,9S,10R,13R,14S,17R)-17-((R)-1,5-Dimethyl-hexyl)-5-fluoro-3,4,10,13-tetramethyl-hexadecahydro-cyclopenta[a]phenanthren-2-ol