The present invention is concerned with novel pyridazinones 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 for the treatment of CNS disorders.
本发明涉及式(I)的新型
吡啶二酮化合物,其中R1、R2、R3和R4如所述和所述权利要求中定义,以及其生理上可接受的盐和酯。这些化合物抑制PDE10A,并可用于治疗中枢神经系统疾病。