Synthesis and anticonvulsant activity of some potential thiazolidinonyl 2-oxo/thiobarbituric acids

A series of 5-[(N-substituted benzylidenylimino)amino]-2-oxo/thiobarbituric acids (3a–3h) have been synthesized by the condensation of 5-hydrazino-2-oxo/thiobarbituric acids (2a–2b) with various aromatic aldehydes. Cycloaddition of thioglycolic acid to 3a–3h, yielded 5-[(2′-substituted phenyl-4′-oxothiazolidin-3′-yl)amino]-2-oxo/thiobarbituric acids (4a–4h). All these compounds were screened, in vivo, for their anticonvulsant activity and acute toxicity studies. Compounds 4f and 4g were found to be most potent compounds of this series and were compared with the reference drugs, phenytoin sodium, lamotrigine and sodium valproate. The structures of these compounds have been established by IR, 1H NMR and mass spectroscopic data.

Graphical abstractA novel series of oxo/thiobarbituric acids derivatives have been synthesized and evaluated for potential anticonvulsant activity.Figure optionsDownload full-size imageDownload as PowerPoint slide