Task: Translation
Input (Czech): Heterocyklick  slou eniny vzorce I nebo jejich soli, kde R.sup.1.n. je vod k nebo C.sub.1-6.n.alkyl; R.sup.2.n., R.sup.3.n. a R.sup.4.n. skupiny jsou nez visle vod k, halogen nebo C.sub.1-6.n.alkyl pop° pad  substituovan² alespo  jedn m atomem fluoru, kter  maj  farmakologickou aktivitu, zp soby pro jejich p° pravu, prost°edky obsahuj c  takov  slou eniny a jejich pou it  pro l  bu onemocn n  CNS jako je ·zkost.\
Output (English): In the present invention there are disclosed heterocyclic compounds of the general formula I or salts thereof, whereby in the said formula Re1 represents hydrogen alkyl containing 1 to 6 carbon atoms; Re2, Re3 and Re4, representing being independent on each other, are hydrogen, a halogen or alkyl containing 1 to 6 carbon atoms being optionally substituted with at least one fluorine atom, whereby the invented compounds exhibit pharmacological activity. In the present invention, there are also claimed processes for preparing the above-specified compounds, preparations in which the compounds are comprised as well as their use for treating diseases of central nervous system, such as anxiety.