title: Antioxidative flavan-3-ol glycosides from stems of Rhizophora stylosa.
abstract: Two flavan-3-ol glycosides together with seven flavan-3-ols were isolated from stems of the mangrove plant, Rhizophora stylosa. Their structures were established as glabraoside A (7) and glabraoside B (8) by spectroscopic and chemical methods. The antioxidative activity of these isolated compounds evaluated by the diphenylpicrylhydrazyl (DPPH) radical scavenging reaction was higher than that of L-ascorbic acid.
authors.affiliation: Department of Bioscience and Biotechnology, Faculty of Agriculture, University of the Ryukyus, Okinawa, Japan. k-takara@agr.u-ryukyu.ac.jp
authors.forename: Kensaku
authors.initials: K
authors.lastname: Takara
authors.forename: Ayako
authors.initials: A
authors.lastname: Kuniyoshi
authors.forename: Koji
authors.initials: K
authors.lastname: Wada
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Kinjyo
authors.forename: Hironori
authors.initials: H
authors.lastname: Iwasaki
mesh_terms: D000975:Antioxidants / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D018547:Plant Stems / Q000737:chemistry*; D043982:Rhizophoraceae / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D005419:Flavonoids; D006027:Glycosides; C404987:flavan-3-ol