title: Synthesis of 18-substituted steroids. Part III. Reactions of 18-substituted pregnan-20-ones.
mesh_terms: D003525:Cyclosteroids / Q000138:chemical synthesis; D007664:Ketosteroids / Q000138:chemical synthesis; D008722:Methods; D011278:Pregnanes / Q000138:chemical synthesis*
chemical_list: D003525:Cyclosteroids; D007664:Ketosteroids; D011278:Pregnanes