| CPC C07D 401/12 (2013.01) [C07D 215/54 (2013.01); C07D 417/12 (2013.01); C07D 471/04 (2013.01); C07D 471/06 (2013.01)] | 20 Claims |
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1. A compound of the formula:
![]() R1 is selected from phenyl optionally substituted with 1-2 Ri, 5- to 6-membered heteroaryl optionally substituted with Rk and C3-C6 cycloalkyl optionally substituted with Rj;
Ri is independently selected from halogen, C1-C4 alkyl, CF3, OH, O(C1-C4 alkyl), O(C1-C3)OCH3 and NH(C1-C3 alkyl)N(CH3)2;
Rk is selected from halogen, C1-C4 alkyl, nitrile, CF3 and O(C1-C4 alkyl);
Rj is O(C1-C4 alkyl);
X is selected from N and —C(R4)—;
R2 is C1-C3 alkyl, or together with R4 it forms a 5- to 6-membered heterocyclic fused ring;
R4 is hydrogen, halogen, NH(C1-C3 alkyl)N(CH3)2, or together with R2 it forms a 5- to 6-membered heterocyclic fused ring, and
R3 is selected from C3-C6 cycloalkyl, NH(C1-C3 alkyl), N(C1-C3 alkyl)2, NH(C1-C3 alkyl)OH, NH(C1-C3 alkyl)N(C1-C3 alkyl)2 and O(C1-C3 alkyl)OH;
or a pharmaceutically acceptable salt thereof.
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