A compound of the formula or a pharmaceutically acceptable salt thereof, wherein X is CH or N; A is and R 1 is selected from the group consisting of hydrogen, deuterium, fluoro, methyl, HO-(C 1 -C 4)-alkyl, optionally substituted with with one or two methyl or deuterium groups, HO-(C 1 -C 3)-alkoxy, optionally substituted with one or two methyl or deuterium groups, fluoro-(C 1 -C 3)-alkyl, HO-(C 1 -C 3)-alkoxy-methyl, optionally substituted with with one or two methyl groups, cyano-(C 1 -C 3)-alkoxy, HO-(C 1 -C 3)-alkylthio, optionally substituted with with one or two methyl groups, HO-(C 1 -C 3)-alkyl-NH-, HO-(C 1 -C 3)-alkyl-N(CH 3)-, methylsulfinyl, acyl, aminocarbonyl, methylcarbonylmethoxymethyl, amino m ethylcarbonyloxyethoxy, triazolyl, 1-methyl-imidizol-2-ylthio, 5-hydroxymethyl-tetrahydrofuran-2-yl, 3-hydroxy-3-methylazetidin-1-yl, 3-methoxy-azetidin-1-yl 3-methoxy-3-methylazetidin-1-yl 4-hydroxypiperidin-1-yl, 4-hydroxy-4-methyl-piperidin-1-yl, 4-hydroxy-4-vinyl-piperidin-1-yl, 4-hydroxymethyl-piperidin-1-yl, 4-(2-hydroxyethyl)-piperindin-1-yl, morpholin-4-yl, 2-hydroxymethyl-morpholin-4-yl, morpholin-4-yl-ethoxy, and tetrahydropyran-4- yl, provided that when A is then R 1 is not unsubstituted HO-(C 1 -C 3)-alkoxy, deuterium substituted HO-(C 1 -C 3)-alkoxy, or HO-(C 1 -C 3)-alkythio. wherein X is CH or N; A is and R 1 is selected from the group consisting of hydrogen, deuterium, fluoro, methyl, HO-(C 1 -C 4)-alkyl, optionally substituted with with one or two methyl or deuterium groups, HO-(C 1 -C 3)-alkoxy, optionally substituted with one or two methyl or deuterium groups, fluoro-(C 1 -C 3)-alkyl, HO-(C 1 -C 3)-alkoxy-methyl, optionally substituted with with one or two methyl groups, cyano-(C 1 -C 3)-alkoxy, HO-(C 1 -C 3)-alkylthio, optionally substituted with with one or two methyl groups, HO-(C 1 -C 3)-alkyl-NH-, HO-(C 1 -C 3)-alkyl-N(CH 3)-, methylsulfinyl, acyl, aminocarbonyl, methylcarbonylmethoxymethyl, amino m ethylcarbonyloxyethoxy, triazolyl, 1-methyl-imidizol-2-ylthio, 5-hydroxymethyl-tetrahydrofuran-2-yl, 3-hydroxy-3-methylazetidin-1-yl, 3-methoxy-azetidin-1-yl 3-methoxy-3-methylazetidin-1-yl 4-hydroxypiperidin-1-yl, 4-hydroxy-4-methyl-piperidin-1-yl, 4-hydroxy-4-vinyl-piperidin-1-yl, 4-hydroxymethyl-piperidin-1-yl, 4-(2-hydroxyethyl)-piperindin-1-yl, morpholin-4-yl, 2-hydroxymethyl-morpholin-4-yl, morpholin-4-yl-ethoxy, and tetrahydropyran-4- yl, provided that when A is then R 1 is not unsubstituted HO-(C 1 -C 3)-alkoxy, deuterium substituted HO-(C 1 -C 3)-alkoxy, or HO-(C 1 -C 3)-alkythio. hydrogen, deuterium, fluoro, methyl, HO-(C 1 -C 4)-alkyl, optionally substituted with with one or two methyl or deuterium groups, HO-(C 1 -C 3)-alkoxy, optionally substituted with one or two methyl or deuterium groups, fluoro-(C 1 -C 3)-alkyl, HO-(C 1 -C 3)-alkoxy-methyl, optionally substituted with with one or two methyl groups, cyano-(C 1 -C 3)-alkoxy, HO-(C 1 -C 3)-alkylthio, optionally substituted with with one or two methyl groups, HO-(C 1 -C 3)-alkyl-NH-, HO-(C 1 -C 3)-alkyl-N(CH 3)-, methylsulfinyl, acyl, aminocarbonyl, methylcarbonylmethoxymethyl, amino m ethylcarbonyloxyethoxy, triazolyl, 1-methyl-imidizol-2-ylthio, 5-hydroxymethyl-tetrahydrofuran-2-yl, 3-hydroxy-3-methylazetidin-1-yl, 3-methoxy-azetidin-1-yl 3-methoxy-3-methylazetidin-1-yl 4-hydroxypiperidin-1-yl, 4-hydroxy-4-methyl-piperidin-1-yl, 4-hydroxy-4-vinyl-piperidin-1-yl, 4-hydroxymethyl-piperidin-1-yl, 4-(2-hydroxyethyl)-piperindin-1-yl, morpholin-4-yl, 2-hydroxymethyl-morpholin-4-yl, morpholin-4-yl-ethoxy, and tetrahydropyran-4- yl, provided that when A is then R 1 is not unsubstituted HO-(C 1 -C 3)-alkoxy, deuterium substituted HO-(C 1 -C 3)-alkoxy, or HO-(C 1 -C 3)-alkythio.