(3S,8S,9S,10R,13R,14S,17R)-17-[(2R)-6-hydroxy-6-methylheptan-2-yl]-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-3,6-diol 在
chromium(VI) oxide 、
硫酸 、
溴 作用下,
以
1,4-二氧六环 为溶剂,
生成
(2R,5S,6R,8S,9S,10R,13R,14S,17R)-2-Bromo-6-hydroxy-17-((R)-5-hydroxy-1,5-dimethyl-hexyl)-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-3-one