A compound of Formula I: in which A is selected from a and b: in which: G 1 is selected from N or CR 8; R 8 is selected from hydrogen, halo, cyano and C 1-4 alkyl optionally substituted by 1 to 3 groups independently selected from hydroxy, halo, cyano, oxo, C 1-4 alkyl, halo-substituted-C 1-4 alkyl, C 1-4 alkoxy, halo-substituted-C 1-4 alkoxy and NHC OR 9; wherein R 9 is C 1-4 alkyl optionally substituted by 1 to 3 groups independently selected from hydroxy, halo, cyano, C 1-4 alkyl, halo-substituted-C 1-4 alkyl, C 1-4 alkoxy and halo-substituted-C 1-4 alkoxy; n is selected from 0, 1 and 2; R 1 is selected from hydrogen, C 1-4 alkyl and -NHR 20, wherein R 20 is selected from hydrogen and C 1-4 alkyl optionally substituted by 1 to 3 groups independently selected from hydroxy, halo, cyano, C 1-4 alkyl, halo-substituted-C 1-4 alkyl, C 1-4 alkoxy, halo-substituted-C 1-4 alkoxy, NHC OR 10 and S 0-2 R 10; wherein R 10 is C 1-4 alkyl optionally substituted by 1 to 3 groups independently selected from hydroxy, halo, cyano, C 1-4 alkyl, halo-substituted-C 1-4 alkyl, C 1-4 alkoxy and halo-substituted-C 1-4 alkoxy; R 2 and R 3 are independently selected from hydrogen, halo, cyano, C 1-4 alkyl, halo-substituted-C 1-4 alkyl, C 1-4 alkoxy and halo-substituted-C 1-4 alkoxy; R 4 is selected from C 1-6 alkyl, C 3-8 cycloalkyl, C 3-8 heterocycloalkyl, C 6-10 aryl and a 5 to 8 member heteroaryl containing 1 to 3 heteroatoms selected from N, O and S; wherein said alkyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl is optionally substituted with 1 to 3 radicals independently selected from halo, cyano, C 1-4 alkyl, halo-substituted-C 1-4 alkyl, C 1-4 alkoxy and halo-substituted-C 1-4 alkoxy; R 5 is selected from hydrogen, halo, cyano, C 1-4 alkyl, halo-substituted-C 1-4 alkyl, C 1-4 alkoxy and halo-substituted-C 1-4 alkoxy; R 6 is selected from hydrogen and C 1-4 alkyl optionally substituted with a group selected from C 6-10 aryl and C 3-8 cycloalkyl; wherein said alkyl, cycloalkyl or aryl groups of R 6 are optionally substituted with 1 to 3 groups independently selected from hydroxy, halo, cyano and C 1-4 alkoxy; or a pharmaceutically acceptable salt thereof. G 1 is selected from N or CR 8; R 8 is selected from hydrogen, halo, cyano and C 1-4 alkyl optionally substituted by 1 to 3 groups independently selected from hydroxy, halo, cyano, oxo, C 1-4 alkyl, halo-substituted-C 1-4 alkyl, C 1-4 alkoxy, halo-substituted-C 1-4 alkoxy and NHC OR 9; wherein R 9 is C 1-4 alkyl optionally substituted by 1 to 3 groups independently selected from hydroxy, halo, cyano, C 1-4 alkyl, halo-substituted-C 1-4 alkyl, C 1-4 alkoxy and halo-substituted-C 1-4 alkoxy; n is selected from 0, 1 and 2; R 1 is selected from hydrogen, C 1-4 alkyl and -NHR 20, wherein R 20 is selected from hydrogen and C 1-4 alkyl optionally substituted by 1 to 3 groups independently selected from hydroxy, halo, cyano, C 1-4 alkyl, halo-substituted-C 1-4 alkyl, C 1-4 alkoxy, halo-substituted-C 1-4 alkoxy, NHC OR 10 and S 0-2 R 10; wherein R 10 is C 1-4 alkyl optionally substituted by 1 to 3 groups independently selected from hydroxy, halo, cyano, C 1-4 alkyl, halo-substituted-C 1-4 alkyl, C 1-4 alkoxy and halo-substituted-C 1-4 alkoxy; R 2 and R 3 are independently selected from hydrogen, halo, cyano, C 1-4 alkyl, halo-substituted-C 1-4 alkyl, C 1-4 alkoxy and halo-substituted-C 1-4 alkoxy; R 4 is selected from C 1-6 alkyl, C 3-8 cycloalkyl, C 3-8 heterocycloalkyl, C 6-10 aryl and a 5 to 8 member heteroaryl containing 1 to 3 heteroatoms selected from N, O and S; wherein said alkyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl is optionally substituted with 1 to 3 radicals independently selected from halo, cyano, C 1-4 alkyl, halo-substituted-C 1-4 alkyl, C 1-4 alkoxy and halo-substituted-C 1-4 alkoxy; R 5 is selected from hydrogen, halo, cyano, C 1-4 alkyl, halo-substituted-C 1-4 alkyl, C 1-4 alkoxy and halo-substituted-C 1-4 alkoxy; R 6 is selected from hydrogen and C 1-4 alkyl optionally substituted with a group selected from C 6-10 aryl and C 3-8 cycloalkyl; wherein said alkyl, cycloalkyl or aryl groups of R 6 are optionally substituted with 1 to 3 groups independently selected from hydroxy, halo, cyano and C 1-4 alkoxy;