title: Flavonoid glycosides and other constituents of Psorospermum androsaemifolium BAKER (Clusiaceae).
abstract: Two new flavonoid glycosides, namely 3'-(2'',4''-dihydroxybenzyloxy)acanthophorin B (1b) and beta,2,3',4,4',6-hexahydroxy-alpha-(alpha-L-rhamnopyranosyl)dihydrochalcone (2) were isolated from the leaves of Psorospermum androsaemifolium together with quercetin (1), acanthophorin B (1a), alpha- (3) and beta-amyrine (3a), vismiaquinone (4), 12-hentriacontanol and hentriacontane. The structures of these secondary metabolites were established using detailed spectroscopic analysis and by comparison with published data. Compounds 1, 1a, 1b, 2, 3, 3a and 4 showed weak antifungal and antibacterial activities.
authors.affiliation: Department of Organic Chemistry, Faculty of Science, University of Yaounde I, Yaounde, Cameroon. poumale@yahoo.fr
authors.forename: Herve Martial Poumale
authors.initials: HM
authors.lastname: Poumale
authors.forename: Rivoarison
authors.initials: R
authors.lastname: Randrianasolo
authors.forename: Jeannot Victor
authors.initials: JV
authors.lastname: Rakotoarimanga
authors.forename: Amelie
authors.initials: A
authors.lastname: Raharisololalao
authors.forename: Hans Christoph
authors.initials: HC
authors.lastname: Krebs
authors.forename: Jean Claude
authors.initials: JC
authors.lastname: Tchouankeu
authors.forename: Bonaventure Tchaleu
authors.initials: BT
authors.lastname: Ngadjui
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology; D000935:Antifungal Agents / Q000494:pharmacology; D047188:Chalcones / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D028084:Clusiaceae / Q000737:chemistry*; D047309:Flavones / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008826:Microbial Sensitivity Tests; D018515:Plant Leaves / Q000737:chemistry; D012210:Rhamnose / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: C532899:3'-(2'',4''-dihydroxybenzyloxy)acanthophorin B; D000900:Anti-Bacterial Agents; D000935:Antifungal Agents; D047188:Chalcones; D047309:Flavones; D005419:Flavonoids; D006027:Glycosides; C532900:beta,2,3',4,4',6-hexahydroxy-alpha-rhamnopyranosyldihydrochalcone; D012210:Rhamnose