| abstract |
A pyridine or pyrimidine derivative represented by the formula (I) has an excellent HGFR inhibitory activity and exhibits strong cell proliferation inhibitory effect and anti-tumor effect against cancer cell lines with amplified HGFR gene.n nwherein R 1 represents a 3- to 10-membered non-aromatic heterocyclic group or the like; R 2 and R 3 represent hydrogen; R 4 , R 5 , R 6 , and R 7 may be the same or different and each represents hydrogen, halogen, C 1-6 alkyl or the like; R 8 represents hydrogen or the like; R 9 represents a 3- to 10-membered non-aromatic heterocyclic group or the like; n represents an integer of 1 or 2; X represents -CH=, nitrogen. |