title: A new acylated flavonol glycoside and antioxidant effects of Hedyotis diffusa.
abstract: A study on the bioactive principles of Hedyotis diffusa Willd., led to the isolation of a new acyl flavonol di-glycoside which was characterized as kaempferol 3-O[2"-O-(E-6'"-O-feruloyl)-beta-D-glucopyranosyl]-beta-D-galactop yranoside by spectral and chemical methods from the methanolic extract. In addition, three known flavonol glycosides and six known iridoid glycosides were also obtained. The above-mentioned glycosides were tested for antioxidant effects on xanthine oxidase inhibition, xanthine-xanthine oxidase cytochrome c and TBA-MDA systems.
authors.forename: C M
authors.initials: CM
authors.lastname: Lu
authors.forename: J J
authors.initials: JJ
authors.lastname: Yang
authors.forename: P Y
authors.initials: PY
authors.lastname: Wang
authors.forename: C C
authors.initials: CC
authors.lastname: Lin
mesh_terms: D000215:Acylation; D000975:Antioxidants / Q000737:chemistry / Q000494:pharmacology*; D005419:Flavonoids / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry / Q000494:pharmacology*; D019666:Rubiaceae / Q000737:chemistry*; D013057:Spectrum Analysis
chemical_list: D000975:Antioxidants; D005419:Flavonoids; D006027:Glycosides