5-cholestene-3α,19-diol 3,19-diacetate 在
高氯酸 、
N-溴代乙酰胺 作用下,
以
1,4-二氧六环 为溶剂,
反应 0.5h,
生成 Acetic acid (3R,5R,6R,8S,9S,10R,13R,14S,17R)-3-acetoxy-6-bromo-17-((R)-1,5-dimethyl-hexyl)-5-hydroxy-13-methyl-hexadecahydro-cyclopenta[a]phenanthren-10-ylmethyl ester 、 Acetic acid (3R,5S,6S,8S,9S,10R,13R,14S,17R)-3-acetoxy-6-bromo-17-((R)-1,5-dimethyl-hexyl)-5-hydroxy-13-methyl-hexadecahydro-cyclopenta[a]phenanthren-10-ylmethyl ester