Acetic acid (5aS,5bR,7aS,11aS,11bR,13S,13aS)-3,5b,8,8,11a,13a-hexamethyl-5a,5b,6,7,7a,8,9,10,11,11a,11b,12,13,13a-tetradecahydro-2-oxa-cyclopenta[a]chrysen-13-yl ester 在
lithium aluminium tetrahydride 作用下,
以
乙醚 为溶剂,
反应 3.0h,
生成
(5aS,5bR,7aS,11aS,11bR,13S,13aS)-3,5b,8,8,11a,13a-Hexamethyl-5a,5b,6,7,7a,8,9,10,11,11a,11b,12,13,13a-tetradecahydro-2-oxa-cyclopenta[a]chrysen-13-ol