title: Marine steroids. Part II. A synthesis of 3beta, 6alpha-dihydroxy-5alpha-pregn-9(11)-en-20-one.
mesh_terms: D006908:Hydroxyprogesterones; D006914:Hydroxysteroids / Q000138:chemical synthesis; D008722:Methods; D011283:Pregnenes / Q000138:chemical synthesis*; D012503:Saponins; D013215:Starfish
chemical_list: D006908:Hydroxyprogesterones; D006914:Hydroxysteroids; D011283:Pregnenes; D012503:Saponins