Synthesis and Biological Evaluation of Coumarins Derivatives as Potential Inhibitors of the Production of Pseudomonas aeruginosa Virulence Factor Pyocyanin

Title:Synthesis and Biological Evaluation of Coumarins Derivatives as Potential Inhibitors of the Production of Pseudomonas aeruginosa Virulence Factor Pyocyanin

Volume: 18 Issue: 2

Author(s): Luana da S.M. Forezi, Thamires Quadros Froes, Mariana F.C. Cardoso, Carine Assuncao de Oliveira Maciel, Gianluca G. Nicastro, Regina L. Baldini, Dora C.S. Costa, Vitor F. Ferreira, Marcelo S. Castilho*Fernando de C. da Silva*

Affiliation:

• Departamento de Quimica Organica, Universidade Federal Fluminense, Instituto de Quimica, Niteroi, RJ, 24020-150,Brazil

• Departamento de Quimica Organica, Universidade Federal Fluminense, Instituto de Quimica, Niteroi, RJ, 24020-150,Brazil

Keywords: Antimicrobial resistance, anti-virulence, cellular assay, phenazine, 2H-chromen-2-one, inhibitor.

Abstract: Antimicrobial Resistance (AMR) is a serious problem for the humans since it threatens the effective prevention and treatment of an ever-increasing range of infections caused by bacteria, parasites, viruses and fungi. One way around this problem is to act on the virulence factors, produced by bacteria, which increase their infection effectiveness. In view of these facts, new coumarin derivatives were synthesized and evaluated for their anti-virulence biological activity towards Pseudomonas aeruginosa. The results suggest that coumarin derivatives with a secondary carbon at C-3 position reduces P. aeruginosa growth whereas compounds with one additional substituent have a significant effect over pyocyanin production (10k EC50 7 ± 2 µM; 10l EC50 42 ± 13 µM). Moreover, 10k reduces P. aeruginosa motility and biofilm formation, what is compatible with a quorum sensing related mechanism of action.

Cite this article as:

da S.M. Forezi Luana , Froes Quadros Thamires , Cardoso F.C. Mariana , de Oliveira Maciel Assuncao Carine , Nicastro G. Gianluca , Baldini L. Regina , Costa C.S. Dora , Ferreira F. Vitor , Castilho S. Marcelo *, de C. da Silva Fernando *, Synthesis and Biological Evaluation of Coumarins Derivatives as Potential Inhibitors of the Production of Pseudomonas aeruginosa Virulence Factor Pyocyanin, Current Topics in Medicinal Chemistry 2018; 18 (2) . https://dx.doi.org/10.2174/1568026618666180329122704