title: Stereocontrolled total synthesis of 19-nor steroids.
mesh_terms: D000736:Androstenes / Q000138:chemical synthesis; D009654:Norsteroids / Q000138:chemical synthesis*; D013237:Stereoisomerism; D013739:Testosterone / Q000138:chemical synthesis
chemical_list: D000736:Androstenes; D009654:Norsteroids; D013739:Testosterone