Flavonol and chalcone ester glycosides from Bidens andicola.
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.
Dipartimento di Scienze Farmaceutiche, Università degli Studi di Salerno, Piazza Vittorio Emanuele 9, Penta di Fisciano, Salerno, Italy. detommasi@ponaz.dia.unisa.it
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D002240:Carbohydrate Sequence; D002851:Chromatography, High Pressure Liquid; D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification; D006131:Growth Inhibitors / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D010568:Peru; D010936:Plant Extracts / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013056:Spectrophotometry, Ultraviolet
D005419:Flavonoids; D006027:Glycosides; D006131:Growth Inhibitors; D010936:Plant Extracts