Abstract
Thiosemicarbazones which previously characterized as a new class that inhibit anti-bovine viral diarrhea virus (BVDV) prompted us for synthesizing a series of new thiosemicarbazone derivatives. Thus, in this study, we reported the synthesis and antiviral evaluation of a series of 5-(arylazo)salicylaldehyde thiosemicarbazone derivatives for their expected antiviral activity. The desired products were synthesized from the condensation of 5-(arylazo)salicylaldehyde derivatives with N-(4)-substituted thiosemicarbazide derivatives. Antiviral screening was performed to test the anti-bovine viral diarrhea virus properties. From the obtained results, compounds 5, 23 and 24 showed highly selective activity against BVDV by blocking the viral RNA synthesis in cell culture. The BVDV in antiviral drug studies is valuable surrogate for the hepatitis C virus (HCV); so, the above results provided a novel candidate for the development of anti-HCV agents.
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