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  • Title: Synthesis and anticonvulsant properties of a series of N-substituted 2-aza-spiro[4.5]decane-1,3-diones and 8-phenyl-2-aza-spiro[4.5]decane-1,3-diones.
    Author: Obniska J.
    Journal: Acta Pol Pharm; 2004; 61(6):467-72. PubMed ID: 15794340.
    Abstract:
    A series of N-phenyl-2-aza-spiro[4.5]decane-1,3-diones [III-VIIII] structurally related to the previously described N-phenyl-3-arylpyrrolidine-2,5-dione (11) was synthesized and tested for their anticonvulsant activity in the maximum electroshock seizure (MES) and metrazole seizure threshold (sc. MET) tests. The most potent of the series were N-(2-methylphenyl)-2-aza-spiro[4.5]decane-1,3-dione [III] and N-(3-methylphenyl)-2-aza-spiro [4.5]decane-1,3-dione [IV], which inhibited seizures in the MES and sc.MET tests. On the other hand, as a preliminary assay we synthesized and tested for the anticonvulsant activity a new N-substituted 8-phenyl-2-aza-spiro[4.5]decane-1,3-dione, containing either a benzyl or a cyclohexyl moiety [IX-XII] at the nitrogen atom. The obtained results showed that the presence and position of the methyl group in the aryl ring [III, IV], as well as an cyclohexane moiety [XI, XIII connected with the imide nitrogen atom, played the essential role for anticonvulsant activity.
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