Stero-bile Acids and Bile Sterols*

Abstract
In the present paper 3α, 7α, 12α, 24ε-tetrahydroxycoprostanic acid (II) and coprostane-3α, 7α, 12α, 24ε, 26-pentol (III), the postulated intermediates in the biosynthetic course of cholic acid from cholesterol, were afforded by a sequence of reactions as shown in the following chart: