The invention provides novel pyrimidone compounds exhibiting excellent antagonism against adenosine receptors (A1, A2A, and A2B receptors), particularly, compounds represented by the general formula (1), salts thereof, or solvates of both: (1) wherein R1 and R2 are each independently hydrogen, C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl, C3-8 cycloalkyl, C3-8 cycloalkenyl, a 5- to 14-membered nonaromatic heterocyclic group, a C6-14 aromatic hydrocarbon group, a 5- to 14-membered aromatic heterocyclic group, C1-6 acyl, or C1-6 alkylsulfonyl; R3 is hydrogen, C1-6 alkyl, C2-6 alkenyl, or C2-6 alkynyl; R4 is a C6-14 aromatic hydrocarbon group; a 5- to 14-membered aromatic heterocyclic group, or a 5- to 14-membered nonaromatic heterocyclic group having at least one unsaturated bond; and R5 is a C6-14 aromatic hydrocarbon group or a 5- to 14-membered aromatic heterocyclic group (with the proviso that every group except hydrogen may be substituted).
本发明提供了新型
嘧啶酮化合物,展现出对
腺苷受体(A1、A2A和A2B受体)的优异拮抗作用,特别是由通式(1)表示的化合物、其盐或两者的溶剂化物:(1)其中R1和R2各自独立地表示氢、C1-6烷基、C2-6烯基、C2-6炔基、C3-8环烷基、C3-8环烯基、5-至14-成员非芳香杂环基、C6-14
芳香烃基、5-至14-成员芳香杂环基、C1-6酰基或C1-6烷基磺酰基;R3表示氢、C1-6烷基、C2-6烯基或C2-6炔基;R4表示C6-14
芳香烃基、5-至14-成员芳香杂环基或至少具有一个不饱和键的5-至14-成员非芳香杂环基;R5表示C6-14
芳香烃基或5-至14-成员芳香杂环基(但除氢外,每个基团均可被取代)。