title: Marine sterols. XII. Glaucasterol, a novel C27 sterol with a unique side chain, from the soft coral Sarcophyton glaucum.
abstract: A minor C27 sterol, glaucasterol, was isolated from the soft coral Sarcophyton glaucum. Based on the spectroscopic evidence and the correlation to cholestanol and 26-nor-27-homocholestanol, its structure was proposed to be 24 epsilon,25 epsilon-24,26-cyclocholesta-5,22E-dien-3 eta-ol (1), the first example of a natural C27 sterol having a cyclopropane ring in the side chain.
mesh_terms: D000818:Animals; D055598:Chemical Phenomena; D002621:Chemistry; D002775:Cholestadienols / Q000302:isolation & purification*; D003063:Cnidaria / Q000032:analysis*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry
chemical_list: D002775:Cholestadienols; C040181:glaucasterol