Isothiazole derivatives as antiviral agents.
We recently described the synthesis and antiviral activity of the compounds 5-phenyl-3-(4-cyano-5-phenylisothiazol-3-yl) disulphanyl-4-isothiazolecarbonitrile and S-(4-cyano-5-phenylisothiazol -3-yl)-O-ethyl thiocarbonate, which were found to be effective against both HIV-1 (IIIB) and HIV-2 (ROD). We have now evaluated these compounds against both RNA and DNA viruses, obtaining high selectivity indexes for poliovirus 1 (SI: 223 and 828, respectively) and Echovirus 9 (SI: 334 and 200, respectively). In our previous studies, 3-methylthio-5-(4-OBn-phenyl)-4-isothiazolecarbonitrile was found to exhibit a broad spectrum of action against picornaviruses, we therefore selected this compound and S-(4-cyano-5-phenylisothiazol-3-yl)-O-ethyl thiocarbonate as the model for the synthesis of a new isothiazole derivative, S-[4-cyano-5-(4-OBn-phenyl)isothiazol-3-yl]-O-ethyl thiocarbonate. This compound was evaluated against picornaviruses, measles virus, HIV-1 (IIIB) and HIV-2 (ROD), and some DNA viruses (adenovirus type 2 and herpes simplex virus type 1). The compound was shown to be active against rhinoviruses 2, 39, 86 and 89, Coxsackie B1 and measles virus.
Garozzo
Adriana
A
Department of Microbiological and Gynaecological Sciences, University of Catania, 95124 Catania, Italy. agar@unict.it
Cutri
Christian C C
CC
Pannecouque
Christophe
C
Castro
Angelo
A
Guerrera
Francesco
F
De Clercq
Erik
E
D000818:Animals; D000998:Antiviral Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D002460:Cell Line; D002470:Cell Survival / Q000187:drug effects; D002522:Chlorocebus aethiops; D004220:Disulfides / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D006801:Humans; D051379:Mice; D008826:Microbial Sensitivity Tests; D015394:Molecular Structure; D013329:Structure-Activity Relationship; D013844:Thiazoles / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D014780:Viruses / Q000187:drug effects*
C525631:5-phenyl-3-(4-cyano-5-phenylisothiazol-3-yl)disulfanyl-4-isothiazolecarbonitrile; D000998:Antiviral Agents; D004220:Disulfides; C525632:S-(4-cyano-5-phenylisothiazol-3-yl)-O-ethyl thiocarbonate; D013844:Thiazoles