title: Chemical constituents of the brown alga Dictyopteris divaricata.
abstract: A novel sesquiterpene-substituted benzoic acid, named dictyvaric acid (1), together with nine known compounds (2-10), have been isolated from the brown alga Dictyopteris divaricata Okam. The structure of 1 was elucidated as 3-[(decahydro-2-hydroxy-2,5,5,8a-tetramethyl-1-naphthalenyl)-methyl]-4-hydroxybenzoic acid by spectroscopic methods, including IR, FABMS, HR-FABMS, 1D and 2D NMR techniques. All compounds were obtained from this species for the first time.
authors.affiliation: Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
authors.forename: F-H
authors.initials: FH
authors.lastname: Song
authors.forename: X
authors.initials: X
authors.lastname: Fan
authors.forename: X-L
authors.initials: XL
authors.lastname: Xu
authors.forename: J-L
authors.initials: JL
authors.lastname: Zhao
authors.forename: L-J
authors.initials: LJ
authors.lastname: Han
authors.forename: J-G
authors.initials: JG
authors.lastname: Shi
mesh_terms: D001565:Benzoates / Q000737:chemistry* / Q000302:isolation & purification; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D000459:Phaeophyceae / Q000737:chemistry*; D012717:Sesquiterpenes / Q000737:chemistry* / Q000302:isolation & purification; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013055:Spectrophotometry, Infrared
chemical_list: D001565:Benzoates; D012717:Sesquiterpenes