the ability of piperazine carbamides ( 3 ) and piperazinothiocarbamides to possess anticonvulsant activity ( 4 ) prompted synthesis of 1- ( 1-aryl-3-ethylthiocarbamido ) -4- ( arylaminothiocarbonyl ) piperazines and evaluation of their anticonvulsant activity .
C0031957
carbamides
C0031958
piperazines