Abstract
A new flavonoid, isorhamnetin-3-O-[-alpha-l-rhamnopyranosyl-(1 --> 3)]-beta-D-glucopyranoside (1), along with two known flavonoids 3'-O-methylorobol (2) and quercetin 3-O-beta-d-glucopyranoside (3), was isolated from Alhagi maurorum. Their structures were established with the help of mass spectrometry, 1D and 2D NMR spectroscopy, and in comparison with the literature data. Compounds 1 and 2 exhibited moderate antioxidant activity in the 2,2-diphenyl-1-picrylhydrazyl free radical scavenging assay.
MeSH terms
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Antioxidants / chemistry
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Antioxidants / isolation & purification*
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Antioxidants / pharmacology*
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Biphenyl Compounds
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Fabaceae / chemistry*
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Flavonoids / chemistry
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Flavonoids / isolation & purification*
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Flavonoids / pharmacology*
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Free Radical Scavengers / chemistry
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Free Radical Scavengers / isolation & purification*
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Free Radical Scavengers / pharmacology*
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Glucosides / chemistry
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Glucosides / isolation & purification*
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Glucosides / pharmacology*
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Molecular Structure
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Nuclear Magnetic Resonance, Biomolecular
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Picrates
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Plants, Medicinal / chemistry*
Substances
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Antioxidants
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Biphenyl Compounds
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Flavonoids
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Free Radical Scavengers
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Glucosides
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Picrates
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isorhamnetin-3-O-(rhamnopyranosyl-(1-3))glucopyranoside
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1,1-diphenyl-2-picrylhydrazyl