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  • Title: Thiourea derivatives as specific inhibitors of picorna viruses.
    Author: Galabov AS.
    Journal: Arzneimittelforschung; 1979; 29(12):1863-8. PubMed ID: 232663.
    Abstract:
    30 compounds with antipicorna virus activity were selected from 173 N,N'-disubstituted thiourea derivatives. The spectrum of antiviral activity was determined in vitro using entero, FMD, rhino and EMC viruses. Structure-activity relationships were studied. Several compounds produced marked activity against coxsackie viruses A and B infection of mice and FMD infection in mice and guinea pigs. N-Phenyl-N'-3-hydroxyphenyl-thiourea (PTU-23) inhibited poliovirus production by more than 99% without influencing the FL host cell. EMC virus was readily inhibited by PTU-23 in Kreb-II cells. Virus RNA synthesis was significantly reduced. Under the effect of PTU-23 the amount of 37S ssRNA extracted from EMC virus infected cells was considerably more reduced than that of the 20S ds RNA. PTU-23 did not influence the activity of virus-induced RNA polymerase in a cell-free system.
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