title: Flavanone glycosides from Bidens gardneri Bak. (Asteraceae).
abstract: 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.
authors.affiliation: Lychnoflora Pesquisa e Desenvolvimento em Produtos Naturais LTDA, Campus USP, Ribeirão Preto, SP, Brazil; Núcleo de Pesquisa em Produtos Naturais e Sintéticos (NPPNS), Faculdade de Ciências Farmacêuticas de Ribeirão Preto - Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Denise Brentan
authors.initials: DB
authors.lastname: Silva
authors.forename: Laura Tiemi
authors.initials: LT
authors.lastname: Okano
authors.forename: Norberto P
authors.initials: NP
authors.lastname: Lopes
authors.forename: Dionéia C R
authors.initials: DC
authors.lastname: de Oliveira
mesh_terms: D031176:Bidens / Q000737:chemistry*; D001938:Brazil; D002942:Circular Dichroism; D044950:Flavanones / Q000737:chemistry / Q000302:isolation & purification*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D010636:Phenols / Q000737:chemistry / Q000302:isolation & purification; D010946:Plants, Medicinal / Q000737:chemistry
chemical_list: D044950:Flavanones; D006027:Glycosides; D010636:Phenols; C028610:flavanone
keywords: Asteraceae; Bidens gardneri; Flavanones; LC–MS