COMPOSITION FOR TREATMENT FOR OR PREVENTION OF DISEASE NECESSITATING ADMINISTRATION OF ADENOSINE A2a RECEPTOR AGONIST

摘要

A composition for treatments for or prevention of diseases which necessitate the administration of an adenosine A2a receptor agonist. The composition contains as an active ingredient either a fused heterocyclic compound represented by the formula (I): (I) (wherein A is nitrogen, C-G, etc.; R<1> and R<2> each independently is hydrogen, halogeno, optionally substituted alkyl, optionally substituted aryl, an optionally substituted heterocyclic group, etc.; Y and Z each independently is nitrogen or C-R<8> and when both of Y and Z are C-R<8>, then the two R<8>'s may be the same or different; X is nitrogen or C-R<10>; and when Y is C-R<8> and either X is C-R<10> or Z is C-R<8>, then either R<8> and R<10> or the two R<8>'s may be bonded to each other to form a ring optionally containing one or more heteroatoms) or a salt of the compound.