Synthesis and anticonvulsant properties of 3-(1,3,4-thiadiazol-2-yl) thiazolidin-4-ones.

A series of 2-substituted 3-(1,3,4-thiadiazol-2-yl)thiazolidin-4-ones were synthesized and evaluated for anticonvulsant activity in a genetic model of reflex epilepsy (sound-induced seizures in DBA/2 mice). The combination of preferred substituents in the 2-position coupled with the introduction of a mercapto group on the thiadiazole moiety led to a number of active compounds. The anticonvulsant activity of most derivatives is better than that of the clinically useful anticonvulsant sodium valproate and some of them appear to possess potencies in the same range as phenytoin and clobazam.