abstract |
Compounds of formulae: n nwhere Ar 1 , Ar 2 , R 3 , R 4 , and m are disclosed herein, or a pharmaceutically acceptable salt thereof (a “Nitro(cyano)vinylpiperazine Compound”); compositions comprising an effective amount of a Nitro(cyano)vinylpiperazine Compound; and methods for treating or preventing pain and other conditions in an animal comprising administering to an animal in need thereof an effective amount of a Nitro(cyano)vinylpiperazine Compound are disclosed. |