| abstract |
Provided are 2-aminopyridine compounds and salts thereof having the following excellent adenosine receptor (A1, A 2A , A 2B receptor) antagonisms:n n n n n n n n [Wherein, R 1 represents a cyano group, a carboxy group or a carbamoyl group which may have a substituent; R 2 is a hydrogen atom, a hydroxyl group, a C 1-6 alkoxy group which may have a substituent, a C 6-14 aromatic hydrocarbon cyclic group which may have a substituent or a 5-14 membered aromatic heterocyclic group which may have a substituent Represent; R 3 and R 4 are the same or different, and each represent a C 6-14 aromatic hydrocarbon cyclic group, a 5 to 14 membered non-aromatic heterocyclic group, a 5 to 14 membered aromatic heterocyclic group, etc. which may have a substituent; |