Process for preparing 3-alpha,7-beta-dihydroxy-5-beta-cholanic acid.

摘要

Process to reduce stereoselectively 3alpha-hyroxy-7- keto-5beta-cholanic acid to 3alpha,7beta-dihydroxy-5beta- cholanic acid in ter.alcohols by using, as reducing agent, sodium metal in the presence of other metal salts.

Examples of metal salts particularly useful are: potassium, cesium and rhubidium organic salts and, more particu- lady potassium acetate or potassium ter.butylate.