Synthesis and biological activity of heteroaryl 3-(1,1-dioxo-2H-(1,2,4)-benzothiadizin-3-yl)-4-hydroxy-2(1H)-quinolinone derivatives as hepatitis C virus NS5B polymerase inhibitors - Tedesco, Rosanna; Chai, Deping; Darcy, Michael G.; Dhanak, Dashyant; Fitch, Duke M.; Gates, Adam; Johnston, Victor K.; Keenan, Richard M.; Lin-Goerke, Juili; Sarisky, Robert T.; Shaw, Antony N.; Valko, Klara L.; et al. (Bioorganic & Medicinal Chemistry Letters, 2009)