title: Total synthesis of steroids and novel 13-alkylgonane derivatives including norgestrel.
mesh_terms: D000478:Alkylation; D004970:Estrone / Q000138:chemical synthesis*; D006067:Gonanes / Q000138:chemical synthesis*; D006865:Hydrogenation; D008722:Methods; D009644:Norgestrel / Q000138:chemical synthesis*; D009905:Optical Rotatory Dispersion; D010084:Oxidation-Reduction
chemical_list: D006067:Gonanes; D004970:Estrone; D009644:Norgestrel