abstract |
The invention is directed to compounds of Formulae I and II: n n nwherein R 1 , R 2 , R 3 , R 5 , R 6 , Y 1 , Y 2 , Y 3 , Y 4 and X are set forth in the specification, as well as solvates, hydrates, tautomers or pharmaceutically acceptable salts thereof, that inhibit protein tyrosine kinases, especially c-fms kinase. |