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New advanced glycation end-products inhibitors from Dichrostachys cinerea Wight & Arn.

Journal of Natural Medicines, ISSN: 1340-3443, Vol: 66, Issue: 1, Page: 213-216
2012
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Review Description

Free radical scavenging and advanced glycation end-product (AGE) inhibitory potential were evaluated in the crude methanol extract of Dichrostachys cinerea. Bioassay-guided isolation led to the identification of four flavan-3-ols, namely (-)-mesquitol (1), oritin (2), (-)-festidinol (3) and (-)-epicatechin (4). Analysis of structure-activity relationships revealed that the presence of 7,8-dihydroxyl groups in the A-ring of flavan-3-ols in conjunction with 3′,4′-dihydroxyls in the B-ring (1) is an important criterion for displaying potent AGE inhibitory activity along with free radical scavenging properties. (-)-Mesquitol (1), oritin (2), and (-)-festidinol (3) were found to be new natural AGE inhibitors. (-)-Mesquitol (1) displayed the most potent AGE inhibitory activity. Results suggest that (-)-mesquitol (1) may serve as an important natural organic lead compound for future development of antiglycating agents along with potent antioxidant activity. © The Japanese Society of Pharmacognosy and Springer 2011.

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