title: Total synthesis of 11beta-methyl-19-nor steroids.
mesh_terms: D004958:Estradiol / Q000031:analogs & derivatives / Q000138:chemical synthesis; D006067:Gonanes / Q000138:chemical synthesis; D008738:Methyl Ethers / Q000138:chemical synthesis; D009654:Norsteroids / Q000138:chemical synthesis*; D012632:Secosteroids / Q000138:chemical synthesis
chemical_list: D006067:Gonanes; D008738:Methyl Ethers; D009654:Norsteroids; D012632:Secosteroids; D004958:Estradiol