Abstract
A series of fluorinated analogs of the potent investigative anticonvulsant agent (4S,8aS)-4-phenylperhydropyrrolo[1,2-a]pyrazine-2,6-dione 1 was prepared and characterized by IR, 1H, 13C NMR and mass spectral data. The compounds have been evaluated in the in vivo rodent models of epilepsy. They displayed high activity in the ‘classical’ maximal electroshock seizure (MES) and subcutaneous Metrazol (scMET) tests as well as in the 6Hz model of pharmacoresistant limbic seizures. The results showed that incorporating fluorine atoms into the phenyl ring of 1 can be beneficial for the anticonvulsant potency. The most promising meta-trifluoromethyl and meta-trifluoromethoxy derivatives (4S,8aS)-5h and (4S,8aS)-5l, respectively, displayed very broad spectra of activity across the preclinical seizure models.
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