| CPC A61K 31/4365 (2013.01) [A61K 31/13 (2013.01); A61K 31/198 (2013.01); A61K 31/27 (2013.01); A61K 31/428 (2013.01); A61K 31/445 (2013.01); A61K 31/4745 (2013.01); A61K 31/519 (2013.01); A61K 35/28 (2013.01); A61K 45/06 (2013.01); A61P 25/28 (2018.01); C07D 495/04 (2013.01); A61K 48/00 (2013.01)] | 28 Claims | 
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               1. A compound having the following formula: 
              ![]() wherein 
                X is CH; 
                R1 is —CH3; 
                Z is heteroaryl, heterocyclyl, or NR3R4, wherein 
              R3 and R4 are independently H, C1-3 alkyl, C1-3 alkoxy, or unsubstituted phenyl, or a pharmaceutically acceptable salt thereof. 
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