Compounds effective in inhibiting replication of Hepatitis C virus (“HCV”) or other viruses are disclosed. This invention is also directed to compositions comprising such compounds, co-formulation or co-administration of such compounds with other anti-viral or therapeutic agents, processes and intermediates for the syntheses of such compounds, and methods of using such compounds for the treatment of HCV or other viral infections.本發明係揭示有效抑制C型肝炎病毒("HCV")或其他病毒複製之化合物。本發明亦針對包含此種化合物之組合物,此種化合物與其他抗病毒或治療劑之共同配方或共同投藥,合成此種化合物之方法與中間物,及使用此種化合物以治療HCV或其他病毒感染之方法。