Flavonol glycosides from Costus spicatus

  • Phytochemistry. 2000 Jan;53(1):87-92. doi: 10.1016/s0031-9422(99)00441-0.
B P da Silva  1 ,  R R Bernardo ,  J P Parente
Affiliations
  • 1. Núcleo de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro, Brazil.
PMID: 10656413 DOI: 10.1016/s0031-9422(99)00441-0
Abstract

Two flavonol diglycosides, tamarixetin 3-O-neohesperidoside, kaempferide 3-O-neohesperidoside and the known quercetin 3-O-neohesperidoside, together with six Other known Flavonoids were isolated from the leaves of Costus spicatus and their structures were elucidated by a combination of spectroscopic and chemical methods. The flavonol diglycosides were evaluated for inhibitory activity of nitric oxide production by activated macrophages (Fig. 1).

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