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  • Title: A new ellagic acid derivative from Polygonum runcinatum.
    Author: Zhou ZH, Liu MZ, Wang MH, Qu W, Sun JB, Liang JY, Wu FH.
    Journal: Nat Prod Res; 2015; 29(9):795-9. PubMed ID: 25560313.
    Abstract:
    A new ellagic acid derivative, 3,3'-dimethylellagic acid-4'-O-(6″-galloyl)-β-D-glucoside, named runcinatside (5), together with four known compounds 3,3'-dimethylellagic acid (1), 3,3',4'-trimethylellagic acid (2), 3,3'-dimethylellagic acid-4'-O-β-D-glucoside (3) and 3-methylellagic acid-4'-O-α-L-rhamno-pyranoside (4), was isolated from the roots of Polygonum runcinatum Buch.-Ham. ex D.Don Var. sinense Hemsl and the structures of these compounds were established by spectroscopic methods and comparison with previously reported data. All compounds showed antioxidant activities in vitro and compound 5 possessed the highest activity.
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