A new acylated flavonol glycoside and antioxidant effects of Hedyotis diffusa.
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.
Lu
C M
CM
Yang
J J
JJ
Wang
P Y
PY
Lin
C C
CC
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
D000975:Antioxidants; D005419:Flavonoids; D006027:Glycosides