National Center for
4XMO: Crystal structure of c-Met in complex with (R)-5-(8-fluoro-3-(1-fluoro-1-(3-methoxyquinolin-6-yl)ethyl)-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-3-methylisoxazole
J. Med. Chem. (2015) 58 p.2417-2430
The overexpression of c-Met and/or hepatocyte growth factor (HGF), the amplification of the MET gene, and mutations in the c-Met kinase domain can activate signaling pathways that contribute to cancer progression by enabling tumor cell proliferation, survival, invasion, and metastasis. Herein, we report the discovery of 8-fluorotriazolopyridines as inhibitors of c-Met activity. Optimization of the 8-fluorotriazolopyridine scaffold through the combination of structure-based drug design, SAR studies, and metabolite identification provided potent (cellular IC50 < 10 nM), selective inhibitors of c-Met with desirable pharmacokinetic properties that demonstrate potent inhibition of HGF-mediated c-Met phosphorylation in a mouse liver pharmacodynamic model.