Presents a study on potent peptidomimetic inhibitor (BILD 1263) of herpes simplex viruses (HSV) ribonucleotide reductase (RNRs). Antiviral activity of BILD 1263; Structure of HSV RNR sub-unit-association inhibitors; Effect of BILD 1263 on HSV replication and cell viability in serum-starved cell; Effect of topical BILD 1263 on HSV-1-induced ocular disease in mice.