Title: Structural Elucidation of Three Flavonoids Extracted from the Rhizomes of Ligularia vellerea by NMR Spectroscopy
Abstract: Two chalcones and one flavonone were isolated from the rhizomes of Ligularia vellerea:3,2',4'-trihydroxy-4-methoxy-chalcone (1),4,2',4'-trihydroxy-chalcone (2) and 7,3'-dihydroxy-4'-methoxy flavonoe (3). The structures of these three compounds were elucidated by 1D and 2D NMR (including 1H-1H COSY、HSQC and HMBC). The positions of the methoxyl and the hydroxyl groups in each compound were determined.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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