LC-DAD-MS/MS analysis of the Brazilian medicinal plant Bidens gardneri Bak. (Asteraceae) results in identification of eleven phenolic compounds. HRESIMS, MS/MS and UV data analyses, with phytochemicals isolation guided by MS data, results in flavanones-(-)-4'-methoxy-7-O-β-D-glucopyranosyl-8,3'-dihydroxyflavanone; (-)-7-O-(6″-E-p-coumaroyl)-β-D-glucopyranosyl-8,3',4'-trihydroxyflavanone; and (-)-4'-methoxy-7-O-(6″-acetyl)-β-D-glucopyranosyl-8,3'-dihydroxyflavanone being identified-together with four known compounds. The absolute configurations of two of the flavanones were determined as 2S via circular dichroism.
Keywords: Asteraceae; Bidens gardneri; Flavanones; LC–MS.
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