Antioxidative flavonoids from the leaves of Morus alba.
Arch Pharm Res. 1999 Feb; 22(1):81-5.AP

Abstract

Nine flavonoids (1-9) were isolated from the leaves of Morus alba (Moraceae). The structures of compounds were determined to be kaempferol-3-O-beta-D-glucopyranoside (astragalin, 1) kaempferol-3-O-(6"-O-acetyl)-beta-D-glucopyranoside (2), quercetin-3-O-(6"-O-acetyl)-beta-D-glucopyranoside (3), quercetin-3-O-beta-D-glucopyranoside (4), kaempferol-3-O-alpha-L-rhamnopyranosyl-(1-->6)-beta-D-glucopyranoside (5), quercetin-3-O-alpha-L-rhamnopyranosyl-(1-->6)-beta-D-glucopyranoside (rutin, 6), quercetin-3-O-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranoside (7), quercetin-3,7-di-O-beta-D-glucopyranoside (8) and quercetin (9) on the basis of spectroscopic and chemical studies. Compounds 7 and 9 exhibited significant radical scavenging effect on 1,1-diphenyl-2-picrylhydrazyl radical.

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Authors+Show Affiliations

Kim SY
Dept. of Sericulture & Entomology, National Institute Agricultural Science and Technology, RDA, Suwon, Korea.
Gao JJ
No affiliation info available
Lee WC
No affiliation info available
Ryu KS
No affiliation info available
Lee KR
No affiliation info available
Kim YC
No affiliation info available

MeSH

AntioxidantsFlavonoidsFree Radical ScavengersHydrolysisMagnetic Resonance SpectroscopyPlant LeavesRosalesSpectrometry, Mass, Fast Atom BombardmentSpectrophotometry, InfraredSpectrophotometry, Ultraviolet

Pub Type(s)

Journal Article

Language

eng

PubMed ID

10071966