A compound selected from the group consisting of: 1-acetyl-4-((5-chloropyrimidin-2-yl)amino)-2-methyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-cyanopyridin-2-yl)amino)- N -ethyl-2,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-cyanopyridin-2-yl)amino)-2,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-cyanopyridin-2-yl)amino)-2,3-dimethyl- N -(tetrahydro-2 H -pyran-4-yl)-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-cyanopyridin-2-yl)amino)- N -( -2-hydroxypropyl)-2,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-cyanopyridin-2-yl)amino)- N -( -2-hydroxypropyl)-2,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-chloropyrimidin-2-yl)amino)- N -ethyl-2,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-chloropyrimidin-2-yl)amino)-2,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-chloropyrimidin-2-yl)amino)-2,3-dimethyl- N -(tetrahydro-2 H -pyran-4-yl)-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-chloropyrimidin-2-yl)amino)- N -( -2-hydroxypropyl)-2,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-chloropyrimidin-2-yl)amino)- N -( -2-hydroxypropyl)-2,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-cyanopyrazin-2-yl)amino)-2,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-cyanopyrazin-2-yl)amino)- N -ethyl-2,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl- N -ethyl-4-((5-fluoropyridin-2-yl)amino)-2,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-chloropyrimidin-2-yl)amino)- N -ethyl-2-methyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; and 1-acetyl-4-((5-cyanopyridin-2-yl)amino)- N -ethyl-2-methyl-1,2,3,4-tetrahydroquinoline-6-carboxamide or a salt thereof. 1-acetyl-4-((5-chloropyrimidin-2-yl)amino)-2-methyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-cyanopyridin-2-yl)amino)- N -ethyl-2,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-cyanopyridin-2-yl)amino)-2,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-cyanopyridin-2-yl)amino)-2,3-dimethyl- N -(tetrahydro-2 H -pyran-4-yl)-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-cyanopyridin-2-yl)amino)- N -( -2-hydroxypropyl)-2,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-cyanopyridin-2-yl)amino)- N -( -2-hydroxypropyl)-2,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-chloropyrimidin-2-yl)amino)- N -ethyl-2,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-chloropyrimidin-2-yl)amino)-2,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-chloropyrimidin-2-yl)amino)-2,3-dimethyl- N -(tetrahydro-2 H -pyran-4-yl)-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-chloropyrimidin-2-yl)amino)- N -( -2-hydroxypropyl)-2,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-chloropyrimidin-2-yl)amino)- N -( -2-hydroxypropyl)-2,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-cyanopyrazin-2-yl)amino)-2,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-cyanopyrazin-2-yl)amino)- N -ethyl-2,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl- N -ethyl-4-((5-fluoropyridin-2-yl)amino)-2,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; 1-acetyl-4-((5-chloropyrimidin-2-yl)amino)- N -ethyl-2-methyl-1,2,3,4-tetrahydroquinoline-6-carboxamide; and 1-acetyl-4-((5-cyanopyridin-2-yl)amino)- N -ethyl-2-methyl-1,2,3,4-tetrahydroquinoline-6-carboxamide