title: Isolation of two new C30 sterols, (24E)-24-N-propylidenecholesterol and 24 epsilon-N-propylcholesterol, from a cultured marine Chrysophyte.
abstract: Two new sterols, (24E)-24-n-propylidenecholesterol and 24 epsilon-n-propylcholesterol, were isolated from a cultured marine Chrysophyte. Since most of the steroids found in marine invertebrates are unchanged or modified sterols of algal or symbiotic origin, the discovery of these two unusual sterols in a unicellular alga grown under well-defined conditions contributes to our knowledge of sterols in marine food chains and offers a potential substrate for biosynthetic labeling experiments.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D002784:Cholesterol / Q000031:analogs & derivatives; D056890:Eukaryota / Q000032:analysis*; D009682:Magnetic Resonance Spectroscopy; D013265:Stigmasterol / Q000031:analogs & derivatives* / Q000096:biosynthesis / Q000302:isolation & purification
chemical_list: C025038:24 xi-N-propylcholesterol; C015896:fucosterol; D002784:Cholesterol; D013265:Stigmasterol