Antioxidant flavonol glycosides from Nectandra grandiflora (Lauraceae)

  • Ribeiro A
  • Silva D
  • Bolzani V
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The bioassay-guided fractionation of the ethanol extract from Nectandra grandiflora leaves led to the isolation of two flavonol glycosides which inhibited the bleaching of beta -carotene on the TLC assay. Both compounds had their molecular structures elucidated by means of extensive use of uni- and bidimensional NMR techniques and were identified as 3-O-beta -rhamnosylkaempferol and 3-O-beta -rhamnosylquercetine.

Author-supplied keywords

  • antioxidant
  • flavonoid glycoside
  • nectandra grandiflora

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  • Alan Bezerra Ribeiro

  • Dulce Helena Siqueira Silva

  • Vanderlan Da Silva Bolzani

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