title: Synthesis of 3 -acetoxy-24-norchola-5,20(22)-dien-23-al. A new intermediate for an improved synthesis of (24- 14 C)-cholesterol.
mesh_terms: D000447:Aldehydes / Q000138:chemical synthesis; D002247:Carbon Isotopes; D055598:Chemical Phenomena; D002621:Chemistry; D002757:Cholanes / Q000138:chemical synthesis*; D002784:Cholesterol / Q000138:chemical synthesis*; D006865:Hydrogenation; D007553:Isotope Labeling; D009654:Norsteroids / Q000138:chemical synthesis*; D011284:Pregnenolone
chemical_list: D000447:Aldehydes; D002247:Carbon Isotopes; D002757:Cholanes; D009654:Norsteroids; D011284:Pregnenolone; D002784:Cholesterol