title: Catalytic hydrogenations of several 18-oxygenated 3-keto-  4 -steroids.
mesh_terms: D000450:Aldosterone; D002384:Catalysis; D002606:Charcoal; D002625:Chemistry, Organic; D002855:Chromatography, Thin Layer; D006865:Hydrogenation; D006914:Hydroxysteroids / Q000138:chemical synthesis; D007664:Ketosteroids / Q000138:chemical synthesis; D007783:Lactones / Q000138:chemical synthesis; D009682:Magnetic Resonance Spectroscopy; D008722:Methods; D055601:Organic Chemistry Phenomena; D010165:Palladium; D011278:Pregnanes / Q000138:chemical synthesis
chemical_list: D006914:Hydroxysteroids; D007664:Ketosteroids; D007783:Lactones; D011278:Pregnanes; D002606:Charcoal; D000450:Aldosterone; D010165:Palladium