5,14,19-trihydroxy-3-oxo-5β,14β-androstane-17β-carboxylic acid ethyl ester 在
sodium tetrahydroborate 、
乙醇 作用下,
生成 3β,5,14,19-tetrahydroxy-5β,14β-androstane-17β-carboxylic acid ethyl ester 、 3β,5,14,19-tetrahydroxy-5β,14β-androstane-17β-carboxylic acid ethyl ester