The invention relates to heterocyclic compounds of formula (I) or a salt thereof wherein R
1
is hydrogen or C
1-6
alkyl; R
2
, R
3
and R
4
groups are independently hydrogen, halogen or C
1-6
alkyl optionally substituted by one or more fluorine atoms, having pharmacological activity, processes for their preparation, to compositions containing them and to their use in the treatment of CNS disorders such as anxiety.
1
本发明涉及式(I)的
杂环化合物或其盐,其中R1为氢或C1-6烷基;R2、R3和R4基团独立地为氢、卤素或C1-6烷基,可选地被一个或多个
氟原子取代,具有药理活性,制备它们的方法,包含它们的组合物以及它们在治疗中枢神经系统障碍(如焦虑症)中的用途。