[1,2,4]Triazolo[1,5-c]pyrimidine derivatives represented by the general formula (I)
or pharmacologically acceptable salts thereof which show adenosine A2A receptor antogonism, wherein R1 represents heteroaryl, etc.; R2 represents hydrogen, etc.; na and nb represent each an integer of 0 to 4; Q represents hydrogen, etc.; R4 and R5 represent each lower alkyl or aryl, or R4 form together with the adjacent carbon atom a saturated carbon ring when R3 is any of (i) to (iii); or R4 represent each hydrogen, lower alkyl or aryl, or R4 and R5 form together with the adjacent carbon atom a saturated carbon ring when R3 is (iv).
通式(I)代表的[1,
2,4]三唑并[1,5-c]
嘧啶衍
生物
或其药理上可接受的盐类,具有
腺苷 A2A 受体拮抗作用,其中 R1 代表杂芳基等;R2 代表
氢等;na 和 nb 分别代表 0 至 4 的整数;Q 代表
氢等。当 R3 为(i)至(iii)中的任一项时,R4 和 R5 各自代表低级烷基或芳基,或 R4 与相邻
碳原子一起形成饱和
碳环;或当 R3 为(iv)时,R4 各自代表
氢、低级烷基或芳基,或 R4 和 R5 与相邻
碳原子一起形成饱和
碳环。