| 摘要 |
<p>[1,2,4]Triazolo[1,5-c]pyrimidine derivatives represented by the following general formula (I) or pharmacologically acceptable salts thereof which show an adenosine A2A receptor antagonism and are useful in treating and/or preventing various diseases caused by the hyperfunction of the adenosine A2A receptor: (I) wherein R1 represents optionally substituted aryl or optionally substituted heteroaryl; R2 represents hydrogen, halogeno, optionally substituted lower alkyl, optionally substituted aryl or optionally substituted heteroaryl; and R3 represents a group of any of the following formulae (A), (B) and (C).</p> |
