A new stilbene glucoside gallate from the roots of Polygonum multiflorum
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A new stilbenoid (1) was isolated from the root extract of Polygonum multiflorum together with eight known constituents (2∼9). The chemical structure of 1 was established as the 6″-O-monogalloyl ester of (E)-2,3,4′,5-β-tetrahydroxystilbene-2-β-D-glucopyranoside based on physicochemical and spectroscopic analyses, particularly by NMR spectroscopic data, i.e., COSY, HMQC and HMBC. Compound 1 weakly inhibited acetylcholinesterase in vitro.
Key wordsPolygonum multiflorum Polygonaceae (E)-2,3,4′,5-tetrahydroxystilbene-2-β-D-glucoside Stilbene glucoside gallate
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