Please use this identifier to cite or link to this item: http://repositorio.ufpa.br:8080/jspui/handle/2011/2447
Title: Dihydroflavonols from the leaves of Derris urucu (Leguminosae): structural elucidation and DPPH radical-scavenging activity
metadata.dc.creator: LÔBO, Lívia Trindade
SILVA, Geilson Alcantara da
FERREIRA, Malisson
SILVA, Milton Nascimento da
SANTOS, Alberdan Silva
ARRUDA, Alberto Cardoso
GUILHON, Giselle Maria Skelding Pinheiro
SANTOS, Lourivaldo da Silva
BORGES, Rosivaldo dos Santos
ARRUDA, Mara Silvia Pinheiro
Keywords: Amazônia brasileira
Química orgânica
Derris urucu
Leguminosa
Alelopatia
Antioxidantes
Flavonóides
Issue Date: 2009
Citation: LOBO, Lívia T. et al. Dihydroflavonols from the leaves of Derris urucu (Leguminosae): structural elucidation and DPPH radical-scavenging activity. Journal of the Brazilian Chemical Society, São Paulo, v. 20, n. 6, p. 1077-1081, 2009. Disponível em: <http://www.scielo.br/pdf/jbchs/v20n6/a13v20n6.pdf>. Acesso em: 22 dez. 2011. <http://dx.doi.org/10.1590/S0103-50532009000600013>.
Abstract: Derris urucu is an Amazonian plant with insecticide and ichthyotoxic properties. Studies with this species show the presence of flavonoids, mainly rotenoids, as well as stilbenes. The ethanol extract of the leaves of Derris urucu (Leguminosae) afforded three new dihydroflavonols named urucuol A (1), B (2) and C (3), and the dihydroflavonol isotirumalin (4). Their structures were elucidated by extensive analysis of 1D and 2D NMR, UV and IR spectra and MS data and comparison with literature data. The isolated compounds (1-4) were evaluated for DPPH• radical scavenging activity and showed a relatively lower antioxidant ability compared to the commercial antioxidant trans-resveratrol.
URI: http://www.repositorio.ufpa.br:8080/jspui/handle/2011/2447
ISSN: 0103-5053
Appears in Collections:Artigos Científicos - FAQUI/ICEN

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