The invention refers to novel 2H-pyridazine-3-one derivatives of the formula I, pharmaceutical compositions containing the same and a process for the preparation of the active ingredient. The novel compounds possess neuroleptic effect and can be used, primarily, for the treatment of schizophrenia. In formula I, R stands for a hydrogen atom or a C1-4 alkyl group, X and Y represent, independently, a hydrogen atom, a halogen atom or a group of the formula II, with the proviso that one of X and Y means always a group of the formula II, and then the other one stands for a hydrogen atom or a halogen atom, wherein in formula II n has a value of 1 or 2.
本发明涉及一种新型的2H-
吡啶嗪-3-酮衍
生物,其
化学式为I,含有该衍
生物的制药组合物以及制备活性成分的方法。这些新化合物具有神经类药效,主要用于治疗精神分裂症。在公式I中,R代表氢原子或C1-4烷基,X和Y分别表示氢原子、卤素原子或公式II的基团,但其中一个始终表示公式II的基团,另一个则表示氢原子或卤素原子,其中在公式II中n的值为1或2。