| abstract |
Drugs for treating and/or preventing diseases induced by the hyperenergia of adenosine A2A receptor such as Parkinson's diseases which contain as the active ingredient [1,2,4]triazolo[1,5-a]pyrimidine derivatives represented by general formula (I) or physiologically acceptable salts thereof, wherein Z represents oxygen or sulfur; and R represents formula (a) (wherein Y represents oxygen, sulfur, etc.; n is an integer of from 0 to 5; and X?1, X2, and X3¿ represent each hydrogen, halogeno, lower alkyl, etc. |