title: Sterols of the cultured euglenid Eutreptia viridis: a novel delta 23-unsaturated sterol.
abstract: The sterol mixture isolated from the marine alga Eutreptia viridis consists mainly of delta 5,7-dienes which account for 80% of the free sterols. Eighteen different sterols were detected, including a novel sterol with the rare delta 23-unsaturation, viz. 24-ethylcholesta-5,7,23Z-trien-3 beta-o1.
mesh_terms: D002782:Cholestenes / Q000302:isolation & purification*; D002849:Chromatography, Gas / Q000379:methods; D005055:Euglena / Q000032:analysis*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry / Q000379:methods; D013261:Sterols / Q000302:isolation & purification*; D013329:Structure-Activity Relationship
chemical_list: D002782:Cholestenes; D013261:Sterols; C037606:24-ethylcholesta-5,7,23-trien-3-ol