CPC C07D 471/04 (2013.01) [A61K 9/0019 (2013.01); A61K 9/08 (2013.01); A61K 31/437 (2013.01); A61K 47/20 (2013.01); A61K 47/38 (2013.01)] | 28 Claims |
1. A compound of Formula:
or a pharmaceutically acceptable salt thereof;
wherein:
R1 and R2 are independently selected from the group consisting of hydrogen, C1-C4 alkyl, C1-C4 haloalkyl, and halogen.
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