(A) Chemical structures of representative dicarboxamide TRKA inhibitors and (B) cocrystal structure of compound 26 in c-MET (PDB ID 5DG5, 2.6 Å). The kinase is depicted in yellow ribbons, and the hydrogen bonds are illustrated with blue dashed lines. Compound atoms are colored as follows: carbon, orange; nitrogen, blue; oxygen, red; fluorine, cyan.