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KMID : 0043319990220010081
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Archives of Pharmacal Research
1999 Volume.22 No. 1 p.81 ~ p.85
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Antioxidative flavonoids from the Leaves of Morus alba
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Kim Sun-Yeou
Gao Jian Jun
Lee Won-Chu
Ryu Kang-Sun
Lee Kang-Ro
Kim Young-Choong
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Abstract
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Nine flavonoids (1-9) were isolated from the leaves of Morus alba (Moraceae). The structures of compounds were determined to be kaempferol-3-O--glucopyranoisde (astragalin, 1) kaempferol-3-O-(6"-O-acetyl)--D-glucopyranoside (2), quercetin-3-O-(6"-O-acetyl)--D-glucopyranoside (3), quercetin-3-O--D-glucopyranoside (4), kaempferol-3-O--L-rhamnopyranosyl-(1 6)--D-glucopyranoside (5), quercetin-3-O--L-rhamnopyranosyl-(1 6)--D-glucopyranoside (rutin, 6), quercetin-3-O--D-glucopyranosyl-(1 6)--D-glucopyranoside (7), quercetin-3,7-di-O--D-glucopyranoside (8) and quercetin (9) on th basis of spectroscopic and chemical studies. Compounds 7 and 9 exhibited significant radical scavenging effect on 1,1-diphenyl-2-picryl-hydrazyl radical.
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KEYWORD
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Morus alba, Moraceae, DPPH radical, Antioxidative activity
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