| CPC C07D 413/04 (2013.01) [C07D 215/50 (2013.01); C07D 401/04 (2013.01)] | 10 Claims |
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1. A compound of Formula I-c:
![]() or a pharmaceutically acceptable salt thereof, wherein:
R1 is selected from
![]() ![]() ![]() R2 is selected from the group consisting of hydrogen, halogen, and a substituted or unsubstituted C1-6 aliphatic; and
R3 is selected from the group consisting of hydrogen and halogen, with the proviso that the compound is not:
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