It is to provide a novel pyridazinone derivative represented by the following general formula (1), which is useful as a pharmaceutical and has a phosphodiesterase inhibitory action:
wherein R1 represents H or C1-6 alkyl, each of R2 and R3 represents H, X, C1-6 alkoxy, Z represents O or S, and A represents AA or BB, wherein AA represents:
and BB represents:
wherein R4 represents H or C1-6 alkyl, and each of R5 and R6 represents C1-6 alkyl.
提供一种新颖的
吡啶并
酮衍
生物,其通式如下(1),可用作药物,并具有
磷酸二酯酶抑制作用:
其中R1代表H或C1-6烷基,R2和R3各自代表H、X、C1-6烷
氧基,Z代表O或S,A代表
AA或
BB,其中
AA代表:
而
BB代表:
其中R4代表H或C1-6烷基,R5和R6各自代表C1-6烷基。