Nitric oxide (NO) production inhibitory constituents of Tabebuia avellanedae from Brazil

Suresh Awale, Tsukasa Kawakami, Yasuhiro Tezuka, Jun Ya Ueda, Ken Tanaka, Shigetoshi Kadota*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

From the water extract of Brazilian Tabebuia avellanedae, two new iridoids (1, 2) and a new phenylethanoid glycoside (3) have been isolated together with twelve known compounds (4-15). Their structures were determined based on the spectroscopic data. The isolated compounds inhibited nitric oxide (NO) production in lipopolysaccharide (LPS)-activated macrophage-like J774.1 cells. Compounds 1, 3, 10, 11, and 12 showed inhibitory activities more potent (IC 50, 13.8-26.1 μg/ml) than a positive control NG- monomethyl-L-arginine (L-NMMA; IC50, 27.4 μg/ml).

Original languageEnglish
Pages (from-to)710-713
Number of pages4
JournalChemical and Pharmaceutical Bulletin
Volume53
Issue number6
DOIs
StatePublished - 2005/06

Keywords

  • Anti-inflammatory
  • Iridoid
  • Nitric oxide (NO) production inhibitory activity
  • Phenylethanoid glycoside
  • Tabebuia avellanedae

ASJC Scopus subject areas

  • General Chemistry
  • Drug Discovery

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