title: [Isolation and identification of two novel polyhydroxylated sterol from Spongia obligue].
abstract: Two novel sterols have been isolated from Spongia obligue collected from South China sea and their structure were identified as 24(28)-methylene-1,3,4,11-tetrohydroxycholest-5-en-18-oic acid and 24(28)-methylene-cholestene-5-en-1,3,8,11-tetraol respectively on the basic of the spectral data of MS, IR, 1HNMR and 13CNMR(DEPT).
authors.affiliation: Department of Chemistry, Jinan University, Guanzhou 510632.
authors.forename: S
authors.initials: S
authors.lastname: Xu
authors.forename: H
authors.initials: H
authors.lastname: He
authors.forename: S
authors.initials: S
authors.lastname: Guo
authors.forename: L
authors.initials: L
authors.lastname: Zeng
mesh_terms: D000818:Animals; D002782:Cholestenes / Q000032:analysis / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D011161:Porifera / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013261:Sterols / Q000032:analysis / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: C549843:24(28)-methylene-1,3,4,11-tetrohydroxycholest-5-en-18-oic acid; C549844:24(28)-methylene-cholestene-5-en-1,3,8,11-tetraol; D002782:Cholestenes; D013261:Sterols