Patent ID: 7994223

Claim:
A method of treating a disorder or condition selected from the group consisting of acute pain, post-surgical pain, inflammatory pain, and neuropathic pain, comprising administering a therapeutically effective amount of a compound of formula (I): wherein, A is —C(O)NH—; R a , R b , and are independently hydrogen, alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkylcarbonyl, alkylsulfonyl, alkylthio, cyano, haloalkoxy, haloalkyl, or halogen; R x at each occurrence is independently acyloxy, alkoxy, alkyl, haloalkyl, halogen, or hydroxy; n is 0, 1, 2, 3, or 4; R 1 is hydrogen or halogen; R 2 and R 3 are independently hydrogen, alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkylcarbonyl, alkylsulfonyl, alkylthio, cyano, haloalkoxy, haloalkyl, halogen or NR 5 R 6 , provided that at least one of R 2 or R 3 is NR 5 R 6 ; R 5 and R 6 are independently hydrogen, alkenyl, alkoxyalkyl, alkoxycarbonyl, alkyl, alkylcarbonyl, alkylsulfonyl, arylalkyl, cycloalkyl, cycloalkylalkyl, haloalkyl, heteroarylalkyl, heterocycle, or heterocyclealkyl; or a pharmaceutically acceptable salt, ester, or amide thereof.