Patent ID: 6984646

Claim:
A compound of general formula (I) wherein R 1 represents hydrogen, halogen, C 1 -C 6 -alkyl, C 6 -C 10 -aryl, C 3 -C 8 -cycloalkyl, or C 1 -C 6 -alkoxy, wherein R 1 can optionally be substituted with 1 to 3 substituents R 1-1 , wherein R 1-1 is halogen, amino, mono- or di-C 1 -C 6 -alkylamino , or C 1 -C 6 -alkoxy, R 2 represents hydrogen, halogen, C 1 -C 6 -alkyl, C 6 -C 10 -aryl, C 3 -C 8 -cycloalkyl, C 1 -C 6 -alkoxy, wherein R 2 can optionally be substituted with 1 to 3 substituents R 2-1 , wherein R 2-1 is halogen, amino, mono- or di-C 1 -C 6 -alkylamino, or C 1 -C 6 -alkoxy, or R 1 and R 2 together with the carbon atoms to which they are attached form a C 6 -C 10 -aryl- or C 5 -C 8 -cycloalkyl-ring, wherein the ring is optionally substituted with C 1 -C 6 -alkyl, C 1 -C 6 -alkoxy, halogen, cyano, amino, mono- or di-C 1 -C 6 -alkylamino, or COR 2-2 , wherein R 2-2 is OH, C 1 -C 6 -alkoxy, C 6 -C 11 -aryloxy, amino, or mono- or di-C 1 -C 6 -alkylamino, R 3 represents hydrogen or C 1 -C 6 -alkyl, R 4 represents —COR 4-1 , wherein R 4-1 represents C 6 -C 10 -aryl, wherein R 4-1 can optionally be substituted with 1 to 3 substituents selected from the group consisting of halogen, amino, C 1 -C 6 -alkyl, C 1 -C 6 -alkoxy, mono or di-C 1 -C 6 -alkylamino, trifluoromethyl, cyano, nitro and hydroxy, with the proviso, that the compound is not 8-benzoyl-H-imidazo[1,2,-a]pyridin-5-one or 8-benzoyl-1-methylimidazo[1,2,-a]pyridin-5-one, or a pharmaceutically acceptable salt thereof.