Patent ID: 7482341

Claim:
A compound of the formula (I): wherein: R 1 is hydrogen, alkyl, cycloalkyl, hydroxy, hydroxyalkyl, alkoxy, alkoxyalkyl, aminoalkyl, aryl, heterocyclyl, alkylsulfonyl, alkylsulfanyl, alkylcarbonylalkyl, alkylcarbonyloxyalkyl, aminocarbonylalkyl, heterocyclylcarbonylalkyl, heterocyclylalkoxyalkyl, alkoxycarbonylalkyl, alkoxyalkylaminocarbonylalkyl, cycloalkylalkoxyalkyl, arylalkyloxyalkyl, aryloxyalkyl, haloalkyl, haloalkoxy or haloalkoxyalkyl; R 2 is hydrogen, alkyl, cycloalkylalkoxyalkyl, alkoxyalkyl, arylalkoxyalkyl, haloalkoxyalkyl, piperidyl, pyrrolidyl, morpholinyl, thiomorpholinyl, arylalkyl, arylalkoxy, aryloxy, heterocyclylalkoxy or heterocyclylalkyl; R 3 is hydrogen or alkyl; R 4 is hydrogen, alkyl or halogen; R 5 is phenyl, naphtyl, thiophenyl, pyridyl, quinolyl, piperidyl, morpholyl, thiomorpholyl or 1,2,3,4-tetrahydro-isoquinolinyl optionally substituted with one or more substituents independently selected from alkyl, cycloalkyl, halogen, hydroxy, hydroxyalkyl, alkoxy, alkoxyalkyl, hydroxyalkoxy, alkoxyalkoxy, cyano, nitro, trifluoromethyl, trifluoromethoxy, trifluoromethylcarbonyl, aryl, arylalkyl, aryloxy, alkoxycarbonylalkoxy and alkylsulfonyl; R 6 is hydrogen or alkyl; or a pharmaceutically acceptable salt or ester thereof; with the proviso that N-(6-(1,1-dimethylethyl)-2-pyridinyl)-4-methyl-benzenesulfonamide is excluded, and with the proviso that when R 1 is hydrogen or methyl, then R 2 is not hydrogen or methyl.