| abstract |
General formula (I) [wherein R 1 represents a substituted or unsubstituted 5-membered aromatic heterocyclic group containing at least one oxygen atom, R 2 represents a substituted or unsubstituted heterocyclic group, —COR 6 (Wherein R 6 represents a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted aromatic heterocyclic group, etc.) and the like, and R 3 represents general formula (II), —NHCOR 7 (wherein R 7 represents -NR 8 R 9 or the like) and the like, or an adenosine A 2A receptor antagonist containing the pharmaceutically acceptable salt thereof as an active ingredient. |