Birch, Stewart, Kolasch & Birch, LLP
2h-pyridazine-3-one derivatives, pharmaceutical compositions containing the same and a process for the preparation of the active ingredient
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.
Egis Gyógyszergyár Rt.
A C A A A A
A61P C07D A61P A61P A61P A61P
inventional inventional inventional inventional inventional inventional
Katalin György József András István János Gábor Judit Gyula Éva Péter Anikó
Pallagi Lévay Barkóczy Egyed Gacsályi Wellmann Szénási Ráczné  Bajnógel Simig Schmidt Kótay Nagy Miklósné  Kovács