Article ID Journal Published Year Pages File Type
10586991 Bioorganic & Medicinal Chemistry Letters 2014 4 Pages PDF
Abstract
Thermal transformation of the (+)-catechin (1) with heating processing afforded a new oxidation product, gambiriin D (2), along with catechin [6′-8]-catechin (3), and (+)-epicatechin (4). The structure of a new catechin dimer with C-C linkage was determined on the basis of spectroscopic data interpretation. The catechin dimers 2 and 3 exhibited significantly improved inhibitory activities against α-glucosidase, with IC50 values of 0.16 ± 0.2 and 0.14 ± 0.2 μM, respectively, when compared to parent (+)-catechin. Kinetic analysis showed that the two effective compounds 2 and 3 have noncompetitive modes of action.
Related Topics
Physical Sciences and Engineering Chemistry Organic Chemistry
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