title: D-norsteroids. II. Microbial hydroxylation of a D-norsteroid ketal.
mesh_terms: D002855:Chromatography, Thin Layer; D003500:Cyclization; D006900:Hydroxylation; D007664:Ketosteroids / Q000138:chemical synthesis / Q000378:metabolism; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D009654:Norsteroids / Q000138:chemical synthesis / Q000378:metabolism*; D011283:Pregnenes / Q000138:chemical synthesis / Q000378:metabolism*; D012233:Rhizopus / Q000378:metabolism*; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D013237:Stereoisomerism
chemical_list: D007664:Ketosteroids; D009654:Norsteroids; D011283:Pregnenes