A series of 2-acetylpyridine thiocarbonohydrazones was synthesized for evaluation as potential antiherpetic agenta. The compounds were prepared by the condensation of 2- acetylpyridine with thiocarbonohydrazide followed by treatment with isocyanates or isothiocyanates. Many were found that were potent inactivators of ribonucleotide reductase encoded by HSV-1 and weaker inactivators of human enzyme. Several ...