Methyl-2-Thienylketopolymethyleneoxyphenyl Derivatives of Alkyl-Substituted 4,5-Dihydro-Oxazoles with Anti-Human Picornavirus Activity

Abstract

The synthesis of 5-methyl-2-thienylketopolymethylene oxyphenyl 4,5-dihydro-2-(alkyl)oxazoles was accomplished by the assembly of two synthones, namely 1-(5-methyl-2-thienyl)-7-hydroxy-1-heptanone (or 1-(5-methyl-2-thienyl)-5-chloro-1-pentanone) and 4-[4,5-dihydro(alkyl)oxazol-2-yl]phenol, in the presence of diethyl azodicarboxylate(DEAD)-triphenyl phosphine (or sodium iodide and anhydrous potassium carbonate). Eighteen new disoxaril analogues were synthesized by the above procedure and tested in vitro against several rhino and enteroviruses. With a few exceptions, all test derivatives were more potent than WIN 51711 when assayed against HRV-14, and as potent as WIN 51711 against HRV-2, but none of them inhibited the other HRV serotypes. Among the various derivatives, two compounds showed the same wide spectrum activity of WIN 51711 against several rhino, and enteroviruses, but were at least 10-fold less toxic.

Keywords

antiviral chemotherapy anti-HRV agents antipicornavirus compounds thienylketopolymethyleneoxyphenyloxazolines

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