Química Nova (Jan 2015)

NOVOS FLAVONOIDES DE Margaritopsis carrascoana COM ATIVIDADE ANTIOXIDANTE

  • Raimundo Regivaldo G. Nascimento,
  • Jackelyne A. Monteiro,
  • Antônia Torres A. Pimenta,
  • Maria Teresa S. Trevisan,
  • Raimundo Braz-Filho,
  • Elnatan Bezerra de Souza,
  • Edilberto R. Silveira,
  • Mary Anne S. Lima

DOI
https://doi.org/10.5935/0100-4042.20140289
Journal volume & issue
Vol. 38, no. 1
pp. 60 – 65

Abstract

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EtOH extracts of the stems and leaves of Margaritopsis carrascoana were found to contain new flavonoids luteolin 7-O-{β-D-apiofuranosil-(1→6)-[β-Lrhamnopyranosyl-( 1→2)]-β-D-glucopyranosyl} (5) and luteolin 7-O-{α-L-rhamnopyranosyl-(1→6)-[β-L-rhamnopyranosyl- (1→2)]-β-D-glucopyranosyl} (6), in addition to the known dihydrodehydrodiconiferyl alcohol 4-O-b-D-glucopyranoside (1), luteolin 7-O-b-L-rhamnopyranosyl-(1→2)-β-D-glucopyranosyl (2), luteolin 7-O-[b-D-apiofuranosyl-(1→6)]-β-D-glucopyranoside (3), and chrysoeriol 7-O-[b-D-apiofuranosyl-(1→6)]-β-D-glucopyranoside (4). All isolated compounds presented higher antioxidant activities than the controls, BHT and quercetin, while the extract of the stems showed strong AChE inhibition.

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