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Estudio fitoquímico de hojas de Uncaria guianensis y evaluación de actividad antibacteriana

Translated title of the contribution: Phytochemical study of Uncaria guianensis leaves and antibacterial activity evaluation

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10 Scopus citations

Abstract

A chlorin compound, pheophorbide a ethyl ester and a mixture of sterols known as β sitosterol and stigmasterol, were isolated from the petroleum ether extract of Uncaria guianensis (Rubiaceae) leaves. Their structures were elucidated by detailed analysis of NMR spectra, including bidimensional techniques and by comparison with literature data. The antibacterial activity for the pheophorbide a ethyl ester was evaluated against two Gram (+) strains: S. aureus ATCC 6538 y E. faecalis ATCC 29212 and three Gram (-) strains: E. coli ATCC 25922, S. typhimurium ATCC 14028s y S. typhimurium MS7953S. aureus ATCC 6538 and E. fecalis ATCC 29212, finding significant activity against S. aureus 6538, E. faecalis 29212, S. tiphymurium MS7953 and E. coli 25922.

Translated title of the contributionPhytochemical study of Uncaria guianensis leaves and antibacterial activity evaluation
Original languagePortuguese
Pages (from-to)303-310
Number of pages8
JournalActa Amazonica
Volume41
Issue number2
DOIs
StatePublished - 2011
Externally publishedYes

Keywords

  • Antimicrobial activity
  • Chlorin
  • Pheophorbide a ethyl ester
  • Rubiaceae
  • Uncaria guianensis

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