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Flavonol and chalcone ester glycosides from Bidens andicola
N De Tommasi1, S Piacente, C Pizza
1Dipartimento di Scienze Farmaceutiche, Università degli Studi di Salerno, Piazza Vittorio Emanuele 9, Penta di Fisciano, Salerno, Italy. detommasi@ponaz.dia.unisa.it
Journal of Natural Products
|August 29, 1998
Abstract:
Five new flavonol 7-O-glycosides (1-5), having quercetin or quercetin 3-methyl ether as their aglycons, and sugar chains made up of three or four sugars, including beta-D-glucopyranose, alpha-L-rhamnopyranose, and beta-D-xylopyranose, have been isolated from the aerial parts of Bidens andicola, along with a new chalcone ester glycoside (6) and five known chalcone ester glycosides. The structures of 1-6 were elucidated using a combination of spectroscopic techniques.