The present invention is concerned with novel pyridazinone derivatives of formula (I)
wherein R
1
, R
2
, R
3
and R
4
are as defined in the description and in the claims, as well as physiologically acceptable salts and esters thereof. These compounds inhibit PDE10A and can be used as pharmaceuticals.
本发明涉及具有如下式(I)的新型
吡啶并嗪酮衍
生物,其中R1、R2、R3和R4如描述和索赔中所定义,并且其生理上可接受的盐和酯。这些化合物抑制PDE10A并可用作药物。