title: A new approach to the synthesis of 3 beta, 23-diacetoxy-24-nor-5-cholene from 3 beta, 21-diacetoxy-5-pregnen-20-one.
abstract: Synthesis of 3 beta, 23-diacetoxy-24-nor-5-cholene in six steps from 3 beta, 21-diacetoxy-5-pregnen-20-one has been achieved by a new approach. The method would allow to label the side chain of a bile acid at carbon-atom 21.
mesh_terms: D006907:17-alpha-Hydroxypregnenolone / Q000031:analogs & derivatives*; D055598:Chemical Phenomena; D002621:Chemistry; D006865:Hydrogenation; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D009654:Norsteroids / Q000138:chemical synthesis*; D010084:Oxidation-Reduction; D013055:Spectrophotometry, Infrared
chemical_list: D009654:Norsteroids; C027852:3 beta,21-diacetoxy-5-pregnen-20-one; D006907:17-alpha-Hydroxypregnenolone; C027853:3,23-diacetoxy-24-nor-5-cholene