(S)-2-[(3S,8S,9S,10R,13S,14S,17R)-10,13-Dimethyl-3-(tetrahydro-pyran-2-yloxy)-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]-propionic acid 在
lithium aluminium tetrahydride 、 dilithium tetrachlorocuprate 、
magnesium 作用下,
以
四氢呋喃 、
吡啶 为溶剂,
反应 0.5h,
生成
2-[(3S,8S,9S,10R,13R,14S,17R)-17-((S)-1,5-Dimethyl-hexyl)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yloxy]-tetrahydro-pyran