Foliar flavonoids of 31 species of the Annonaceae native to Brazil, amounting to 76 compounds, were isolated and identified. All phenols found were glycosides of either flavones (apigenin, scutellarein, hispidulin and luteolin) or flavonols (kaempferol, rhamnocitrin, 6-hydroxyrhamnocitrin, quercetin, isorhamnetin and rhamnetin), with the latter predominating. Some members of the tribe Bocageeae are distinctive for accumulating 6-oxygenated flavones and flavonols, in addition to 7-O-methylated flavonols, a feature possibly linked to the assumed advanced condition of the tribe within the family. Members of Duguetia stand out for the apparent absence of quercetin glycosides. Anaxagorea dolichocharpa seemingly lacks flavones and flavonols entirely. A UPGMA analysis based on the distribution of flavonoids does not group the analyzed species according to the available tribal division of the Annonaceae. However, several taxonomically meaningful groupings emerged through the multivariate analysis.
Annonaceae; flavonoids; flavones; flavonols; UPGMA; chemotaxonomy
NCBI PubMed ID: 11130666Publication DOI: 10.1016/s0031-9422(00)00227-2Journal NLM ID: 0151434Publisher: Elsevier
Correspondence: dyacsan@ib.usp.br
Institutions: Institute of Biosciences, University of São Paulo, São Paulo, Brazil
Found