Abstract: The present invention provides HCV polymerase inhibiting compounds having the formula (I): where R1 is cyclobutyl-N(Ra)—, n is 1, 2, 3 or 4, and at least one R5 is RaSO2N(Rj)alkyl-. In a non-limiting example, a compound of the present invention is N-[(3-{1-[(cyclobutyl)amino])-4-hydroxy -2-oxo-1,2-dihydro-quinolin-3-yl}-1,1-dioxo-1,4-dihydro-1?6-thieno[2,3-e][1,2,4]thiadiazin-7-yl)methyl]methane-sulfonamide. The present invention also features compositions comprising the compounds of the present invention or pharmaceutically acceptable salts, stereoisomers or tautomers thereof, and methods of using the same to treat or prevent HCV infection.

Abstract: Compounds having the formula are hepatitis C(HCV) polymerase inhibitors. Also disclosed are a composition and method for inhibiting hepatitis C(HCV) polymerase, processes for making the compounds, and synthetic intermediates employed in the processes.

Abstract: Compounds having the formula are hepatitis C (HCV) polymerase inhibitors. Also disclosed are a composition and method for inhibiting hepatitis C (HCV) polymerase, processes for making the compounds, and synthetic intermediates employed in the processes.