Abstract
A flavanol glycoside, glucodistylin (1) and three polyphenol derivatives, gallate (2), (+)-catechin (3) and (+)-gallocatechin (4) were isolated from an aqueous acetone extract of the bark of Quercus acutissima. Of these compounds, glucodistylin exhibited uncompetitive inhibitory activity against recombinant human aldose reductase with an IC(50) value of 7.2 μM. Furthermore, glucodistylin inhibited sorbitol accumulation by 48.84% at 50 μM. This flavonoid showed therapeutic potential in the prevention and treatment of diabetes-related complications.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Aldehyde Reductase / antagonists & inhibitors*
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Aldehyde Reductase / metabolism
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Catechin / analogs & derivatives*
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Catechin / chemistry
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Catechin / isolation & purification
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Catechin / pharmacology*
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Diabetes Complications / drug therapy
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Diabetes Complications / prevention & control
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Drug Evaluation, Preclinical
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Flavonoids / chemistry
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Flavonoids / isolation & purification
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Flavonoids / pharmacology*
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Flavonols / chemistry
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Flavonols / isolation & purification
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Flavonols / pharmacology*
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Glycosides / chemistry
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Glycosides / isolation & purification
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Glycosides / pharmacology*
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Humans
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Molecular Targeted Therapy
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Phenols / chemistry
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Phenols / isolation & purification
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Phenols / pharmacology*
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Plant Bark
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Polyphenols
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Quercus*
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Recombinant Proteins / antagonists & inhibitors
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Sorbitol / metabolism*
Substances
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Flavonoids
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Flavonols
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Glycosides
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Phenols
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Polyphenols
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Recombinant Proteins
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glucodistylin
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Sorbitol
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Catechin
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Aldehyde Reductase
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gallocatechol