Abstract
Four new flavonol glycosides (1–4), polygalins D–G, together with 12 known flavonoids (5–16) were isolated from the aerial parts of Polygala sibirica L. . The chemical structures of these compounds were characterised by NMR and ESI–MS spectroscopic data and acid hydrolysis results. This report is a continuous research work on the systematic chemical investigations of plants of the genus Polygala in our laboratory.
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