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Synthesis and preliminary anti-inflammatory and antibacterial evaluation of some Diflunisal aza-analogs.

Abstract

Our aim was to identify new multi-target compounds endowed with both anti-inflammatory and anti-bacterial activities for treatment of human infections. Diflunisal, a nonsteroidal anti-inflammatory agent, has recently been repurposed for its anti-virulence properties against methicillin-resistant Staphylococcus aureus. The effective synthesis of some aza-analogs of the anti-inflammatory drug diflunisal was carried out following the route involving key oxazole intermediates to obtain o- and m-hydroxypyridincarboxylic acid derivatives. The newly synthesized diflunisal aza-analogs did not exhibit cytotoxic activity up to 80 µM and some of them reported anti-inflammatory activities, damping the levels of pro-inflammatory cytokines and prostaglandins induced by bacterial lipopolysaccharide in human primary macrophages. Ten of Difunisal aza-analogs were found to have interesting antibacterial activity, sensitizing S. aureus, Streptococcus pyogenes, Enterococcus faecium, and Pseudomonas aeruginosa to the antibacterial effects of beta-lactam antibiotics and protein synthesis inhibitors.

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Publication details

The article was received on 13 Mar 2018, accepted on 14 Apr 2018 and first published on 24 Apr 2018


Article type: Research Article
DOI: 10.1039/C8MD00139A
Citation: Med. Chem. Commun., 2018, Accepted Manuscript
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    Synthesis and preliminary anti-inflammatory and antibacterial evaluation of some Diflunisal aza-analogs.

    D. Carta, P. Brun, M. Dal Prà, G. Bernabè, I. Castagliuolo and M. G. Ferlin, Med. Chem. Commun., 2018, Accepted Manuscript , DOI: 10.1039/C8MD00139A

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