Patent ID: 8030302

Claim:
A compound of the formula: wherein: R 1 is H or methyl; R 2 is amino, dimethylamino, fluoro, cyclopropyl, pyridyl optionally substituted with an amino substituent or 1-2 methyl substituents, pyrazolyl optionally substituted with two methyl substituents, 2-methoxy-pyrimidin-5-yl, 4-methylsulfonylphenyl, tetrahydro-2H-pyran-4-ylamino, (tetrahydro-2H-pyran-4-yl)amino carbonyl, or a morpholin-4-yl substituent: where R a , R b and R c are independently selected from H or methyl; R 3 is H or F; R 4 is H, methyl, piperidin-1-ylmethyl, morpholin-4-ylmethyl, or pyrazol-1-ylmethyl; R 5 is H or F; and X is CH═N, CH═CH, CH═C(CH 3 ), C(CH 3 )═CH, C(CH 3 )═N, N(CH 3 ), or C(morpholin-4ylmethyl)═CH; or a pharmaceutically acceptable salt thereof.