(5aS,5bR,7aS,11aS,11bR,13aS)-3,5b,8,8,11a,13a-Hexamethyl-5a,6,7,7a,8,9,10,11,11a,11b,12,13a-dodecahydro-5bH-2-oxa-cyclopenta[a]chrysen-13-one 在
sodium tetrahydroborate 作用下,
以
甲醇 为溶剂,
反应 1.0h,
以30 mg的产率得到(5aS,5bR,7aS,11aS,11bR,13R,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