Patent ID: 7576217

Claim:
A compound of formula I wherein R 1 is hydrogen, C 1 -C 7 alkyl, C 1 -C 7 haloalkyl, di(C 1 -C 7 )alkylamino, C 3 -C 8 cycloalkyl, or a 5 or 6 membered heterocycloalkyl; R 2 is C 1 -C 7 alkyl, aryl, C 1 -C 7 alkoxy(C 1 -C 7 )alkyl, C 1 -C 7 haloalkyl or C 3 -C 8 cycloalkyl; R 3 and R 4 are each independently hydrogen, halo, hydroxy, C 1 -C 7 alkoxy, C 1 -C 7 haloalkoxy, di(C 1 -C 7 )alkylamino, C 1 -C 7 alkylsulfonyl, or a 5 or 6 membered heterocycloalkyl; R 5 is aryloxy, or is —NR 7 R 8 wherein R 7 and R 8 are each independently C 1 -C 7 alkyl, or R 7 and R 8 , together with the nitrogen atom to which they are attached, form 4 to 7 membered heterocycloalkyl group which is optionally substituted by one or more subsituent(s) selected from the group consisting of halo, C 1 -C 7 alkyl, C 1 -C 7 alkoxy, hydroxy, phenyl and di(C 1 -C 7 )alkylamino; and R 6 is hydrogen or together with R 5 forms a 5 or 6 membered heterocycloalkyl group which is optionally substituted by one or more halogen; or a pharmaceutically acceptable acid addition salt thereof.