期刊
PLOS ONE
卷 9, 期 3, 页码 -出版社
PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0091660
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资金
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES, Brazil)
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq, Brazil)
- Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro (FAPERJ, Brazil)
- Programa de Apoio a Nucleos de Excelencia (PRONEX, Brazil)
- Instituto Nacional de Ciencia e Tecnologia de Farmacos e Medicamentos (INCT-INOFAR, Brazil) [573.564/2008-6]
In this work, we describe the design, synthesis and pharmacological evaluation of novel imidazo[1,2-a]pyridine-N-glycinylhydrazone derivatives (1a-k) intended for use as inhibitors of tumor necrosis factor alpha (TNF-alpha) production. The compounds were designed based on the orally active anti-inflammatory prototype LASSBio-1504 (2), which decreases the levels of the pro-inflammatory cytokine TNF-alpha in vitro and in vivo. The in vitro pharmacological evaluation of the imidazo[1,2-a] pyridine compounds (1) showed that substitution of the N-phenylpyrazole core present in prototype 2 by a bioisosteric imidazo[1,2-a]pyridine scaffold generated anti-TNF-alpha compounds that were more potent than the previously described N-phenylpyrazole derivative 2 and as potent as SB-203580, a p38 MAPK inhibitor. The most active derivative (E)-2-( 2-tert-butylimidazo[1,2-a]pyridin-3-ylamino)-N'-(4-chlorobenzylidene) acetohydrazide, or LASSBio-1749 (1i) was orally active as an anti-inflammatory agent in a subcutaneous air pouch model, reducing expressively the levels in vivo of TNF-alpha and other pro-inflammatory cytokines at all of the tested doses.
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