Abstract
Three new flavonoid glycosides, named 7,8,4'-trihydroxy-3,5-dimethoxy-6-methylflavonol-8-O-β-D-glucopyranoside (1), 5,7,4'-trihydroxy-3-methoxy-6-methylflavonol-7-O-β-D-glucopyranoside (2), 3,5,7,4'-tetrahydroxy-6-methylflavonol-7-O-β-D-glucopyranoside (3), together with two known flavonoid glycosides were isolated from the needles of Pinus tabulaeformis Carr. Their structures were established on the basis of various spectroscopic analyses.
MeSH terms
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Drugs, Chinese Herbal / chemistry
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Drugs, Chinese Herbal / isolation & purification*
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Flavonoids / chemistry
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Flavonoids / isolation & purification*
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Glycosides / chemistry
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Glycosides / isolation & purification*
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Molecular Structure
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Nuclear Magnetic Resonance, Biomolecular
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Pinus / chemistry*
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Stereoisomerism
Substances
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3,5,7,4'-tetrahydroxy-6-methylflavonol-7-O-beta-D-glucopyranoside
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5,7,4'-trihydroxy-3-methoxy-6-methylflavonol-7-O-beta-D-glucopyranoside
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7,8,4'-trihydroxy-3,5-dimethoxy-6-methylflavonol-8-O-beta-D-glucopyranoside
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Drugs, Chinese Herbal
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Flavonoids
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Glycosides