Discovery of <i>N</i>-[4-[6-<i>tert</i>-Butyl-5-methoxy-8-(6-methoxy-2-oxo-1<i>H</i>-pyridin-3-yl)-3-quinolyl]phenyl]methanesulfonamide (RG7109), a Potent Inhibitor of the Hepatitis C Virus NS5B Polymerase
                                
                                    
                                        作者:Francisco X. Talamas、Sarah C. Abbot、Shalini Anand、Ken A. Brameld、David S. Carter、Jun Chen、Dana Davis、Javier de Vicente、Amy D. Fung、Leyi Gong、Seth F. Harris、Petra Inbar、Sharada S. Labadie、Eun K. Lee、Remy Lemoine、Sophie Le Pogam、Vincent Leveque、Jim Li、Joel McIntosh、Isabel Nájera、Jaehyeon Park、Aruna Railkar、Sonal Rajyaguru、Michael Sangi、Ryan C. Schoenfeld、Leanna R. Staben、Yunchou Tan、Joshua P. Taygerly、Armando G. Villaseñor、Paul E. Weller                                    
                                    
                                        DOI:10.1021/jm401329s
                                    
                                    
                                        日期:2014.3.13
                                    
                                    In the past few years, there have been many advances in the efforts to cure patients with hepatitis C virus (HCV). The ultimate goal of these efforts is to develop a combination therapy consisting of only direct-antiviral agents (DAAs). In this paper, we discuss our efforts that led to the identification of a bicyclic template with potent activity against the NS5B polymerase, a critical enzyme on the life cycle of HCV. In continuation of our exploration to improve the stilbene series, the 3,5,6,8-tetrasubstituted quinoline core was identified as replacement of the stilbene moiety. 6-Methoxy-2(1H)-pyridone was identified among several heterocyclic headgroups to have the best potency. Solubility of the template was improved by replacing a planar aryl linker with a saturated pyrrolidine. Profiling of the most promising compounds led to the identification of quinoline 41 (RG7109), which was selected for advancement to clinical development.