Ureas/thioureas of benzo[d]isothiazole analog conjugated glutamic acid: synthesis and biological evaluation.

A series of urea and thiourea derivatives of glutamic acid conjugated to 3-(1-piperazinyl)-1,2-benzisothiazole were synthesized, spectroscopically characterized, and evaluated for their in vitro antiglycation and urease inhibitory activities. Preliminary screening of the synthesized compounds 1-35 showed significant results. Amongst these, compounds 17-21 and 30-35 bearing fluoro and methoxy substituents, respectively, exhibited inhibitory potency greater than the reference standards. Hence, they may serve as new lead compounds for further development.