title: Benzophenone glycosides from Gnidia involucrata.
abstract: Six compounds have been isolated from the methanol extract of the aerial parts of Gnidia involucrata (Thymelaeaceae). They were identified as 2,3,4',5,6-pentahydroxybenzophenone-4-C-glucoside and 2,4',6-trihydroxy-4-methoxybenzophenone-2-O-glucoside, together with mangiferin, kaempferol-3-O-glucoside, yuankanin and manniflavanone by chemical and spectroscopic means. The structures of three additional C-glycosyl flavones--vitexin, isovitexin and isoorientin--were determined on-line by LC/UV/APCI-MSn analysis of the crude extract.
authors.affiliation: Institut de Pharmacognosie et Phytochimie, Université de Lausanne, Switzerland.
authors.forename: J
authors.initials: J
authors.lastname: Ferrari
authors.forename: C
authors.initials: C
authors.lastname: Terreaux
authors.forename: S
authors.initials: S
authors.lastname: Sahpaz
authors.forename: J D
authors.initials: JD
authors.lastname: Msonthi
authors.forename: J L
authors.initials: JL
authors.lastname: Wolfender
authors.forename: K
authors.initials: K
authors.lastname: Hostettmann
mesh_terms: D000818:Animals; D001097:Arachnida / Q000737:chemistry*; D001577:Benzophenones / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D013057:Spectrum Analysis
chemical_list: D001577:Benzophenones; D006027:Glycosides