[EN] HETEROCYCLIC ANTIVIRAL COMPOUNDS<br/>[FR] COMPOSÉS HÉTÉROCYCLIQUES ANTIVIRAUX
                        
                            
                                申请人:HOFFMANN LA ROCHE
                            
                            
                                公开号:WO2009101022A1
                            
                            
                                公开(公告)日:2009-08-20
                            
                            Compounds having the formula (I) wherein Y, R1, R4, A1, A2 and X2 are as defined herein are Hepatitis C virus NS5b polymerase inhibitors. Also disclosed are compositions and methods for treating an HCV infection and inhibiting HCV replication.