title: 24xi-Methylcholestane-3beta, 5alpha, 6beta, 12beta, 25-pentol 25-monoacetate, a novel polyoxygenated marine sterol.
abstract: 24xi--Methylcholestane-3beta, 5alpha, 6beta, 12beta, 25-pentol 25-monoacetate has been isolated from an Alyconarian and its structure was established in part through extensive high resolution mass spectral and nmr studies and partly through the nonidentity of one of its degradation products with 24xi-methylcholestane-3beta, 5alpha, 6beta, 12alpha-tetrol synthesized from deoxycholic acid.
mesh_terms: D000818:Animals; D003063:Cnidaria / Q000378:metabolism*; D006865:Hydrogenation; D007536:Isomerism; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D010084:Oxidation-Reduction; D013261:Sterols / Q000032:analysis / Q000302:isolation & purification*
chemical_list: D013261:Sterols