N-((1,3-Diphenyl-1H-pyrazol-4-yl)methyl)anilines: A novel class of anti-RSV agents

Fioravanti, R;Desideri, N;Biava, M;Droghini, P;Atzori, EM;IBBA, CRISTINA;COLLU, GABRIELLA;SANNA, GIUSEPPINA;DELOGU, ILENIA;LODDO, ROBERTA

2015-01-01

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Abstract

A series of N-((1,3-diphenyl-1H-pyrazol-4-yl)methyl)anilines were synthesized and evaluated in vitro for cytotoxicity and antiviral activity against a large panel of viruses. Most of the tested compounds interfered with RSV replication in the micromolar concentrations (EC50s ranging from 5μM to 28μM). SAR studies suggested that the presence of a trifluoromethyl group in R(1) abolished the anti-RSV activity and enhanced the cytotoxicity while the best results in term of both anti-RSV activity and selectivity were obtained by the introduction in R(1) of a chlorine or a bromine atom.