CPC C07D 471/04 (2013.01) [A61P 29/00 (2018.01); C07B 2200/13 (2013.01)] | 17 Claims |
1. A compound having the formula I:
or a pharmaceutically acceptable salt thereof,
wherein:
R is halogen.
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9. A pharmaceutical composition comprising a pharmaceutically acceptable carrier and a therapeutically effective amount of the compound of claim 1, or a pharmaceutically acceptable salt thereof.
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