Patent ID: 8901150

Claim:
A compound, or pharmaceutically acceptable salt thereof, of Formula Ib: wherein: R 1 , R 3 , R 6 , and R 8 are H; R 2 is pyridylR 12 ; R 5 is selected from the group consisting of -arylR 12 and -heteroarylR 12 ; each R 9 is independently selected from the group consisting of H, C 1-6 alkyl, —CF 3 , —(C 1-9 alkyl) n carbocyclyl, and —(C 1-9 alkyl) n aryl; alternatively, two adjacent R 9 , may be taken together to form a fused ring with the nitrogen; each R 12 is 1-5 substituents each selected from the group consisting of H, C 1-6 alkyl, halide, —CF 3 , —CN, —NHC(═O)R 9 , and —NHC(═O)N(R 9 ) 2 ; Y 1 , Y 2 , and Y 4 are carbon; Y 3 is nitrogen and R 7 is absent; and each n is 0 or 1.