Abstract Substituted piperazine and aniline derivatives of oxazolidin-2, 4-diones and imidazolidin-2, 4-diones were synthesized by N 3 alkylation and screened for their anticonvulsant activity by the maximal electroshock (MES) test, and their neurotoxicity was evaluated by the rotarod test. Among all the synthesized derivatives, compounds 4b, 6c, 6d, 10b, 11a, 11b, and 11d were found to exhibit maximum seizure protection in MES test and ...