The present invention provides 2-aminopyridine compound having an excellent adenosine receptor (A
1
, A
2a
, A
2b
receptors) antagonism, which is represented by the following formula:
1
(wherein, R
1
represents cyano group, carboxyl group or an optionally substituted carbamoyl group; R
2
represents hydrogen atom, hydroxyl group, an optionally substituted C
1-6
alkoxy group, an optionally substituted C
6-14
aromatic hydrocarbon cyclic group or an optionally substituted 5- to 14-membered aromatic heterocyclic group; and R
3
and R
4
are the same as or different from each other and each represents a C
6-14
aromatic hydrocarbon cyclic group, a 5- to 14-membered non-aromatic heterocyclic group or a 5- to 14-membered aromatic heterocyclic group which may be substituted, respectively) or a salt thereof.
本发明提供了一种具有优异
腺苷受体(A1、A2a、A2b 受体)拮抗作用的 2-
氨基吡啶化合物,其
化学式如下:1(其中,R1代表
氰基、羧基或可选择取代的
氨基甲酰基;R2代表
氢原子、羟基、可选择取代的C1-6烷
氧基、可选择取代的C6-14
芳香烃环基或可选择取代的 5-到 14-成员芳香杂环基;R3和 R4相同或不同,分别代表 C6-14
芳香烃环基、 5-到 14-成员非芳香杂环基或可选择取代的 5-到 14-成员芳香杂环基,或其盐。