Pyrazolo[1,5-a]pyrimidines for antiviral treatment

Abstract

or a pharmaceutically acceptable salt or ester, thereof, as described herein. The compounds and compositions thereof are useful for treating Pneumovirinae virus infections. The compounds, compositions, and methods provided are particularly useful for the treatment of Human respiratory syncytial virus infections.

1 - 38 . (canceled) 
     
     
         39 . A compound selected from the group consisting of: 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
       
       or pharmaceutically acceptable salts and esters thereof. 
     
     
         40 . A compound selected from the group consisting of: 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
       
       or a pharmaceutically acceptable salts and esters thereof. 
     
     
         41 . A method of treating a Pneumovirinae virus infection in a mammal in need thereof comprising administering to the mammal a therapeutically effective amount of a compound of  claim 39  or a pharmaceutically acceptable salt or ester thereof. 
     
     
         42 . A method of treating a Pneumovirinae virus infection in a mammal in need thereof comprising administering to the mammal a therapeutically effective amount of a compound of  claim 40  or a pharmaceutically acceptable salt or ester thereof. 
     
     
         43 . The method of  claim 41  wherein the Pneumovirinae virus infection is caused by a respiratory syncytial virus. 
     
     
         44 . The method of  claim 42  wherein the Pneumovirinae virus infection is caused by a respiratory syncytial virus. 
     
     
         45 . The method of  claim 41  further comprising administering a therapeutically effective amount of at least one other therapeutic agent or composition thereof selected from the group consisting of ribavirin, palivizumab, motavizumab, RSV-IGIV MEDI-557, A-60444, MDT-637, BMS-433771, ALN-RSV0 and ALX-0171 or mixtures thereof. 
     
     
         46 . The method of  claim 42  further comprising administering a therapeutically effective amount of at least one other therapeutic agent or composition thereof selected from the group consisting of ribavirin, palivizumab, motavizumab, RSV-IGIV MEDI-557, A-60444, MDT-637, BMS-433771, ALN-RSV0 and ALX-0171 or mixtures thereof.