Background: Thiazole and benzothiazole derivatives, as well as thiazolidinones are very important
scaffolds in medicinal chemistry. Literature has revealed that they possess a wide spectrum of
biological activities including antimicrobial activity.
Objective: The goal of this paper is the designing of new benzothiazole based thiazolidinones and the
evaluation of their biological activities.
Methods: The designed compounds were synthesized using classical organic synthesis methods. The
antimicrobial activity was evaluated using the method of microdilution.
Results: The twelve newly synthesized compounds showed antimicrobial properties. All compounds
appeared to be more active than ampicillin in most studied strains and in some cases, more active than
streptomycin. Antifungal activity, in most cases was also better than the reference drugs ketoconazole
and bifonazole. The prediction of cytotoxicity revealed that the synthesized compounds were not toxic
(LD50 350-1000 mg/kg of body weight). Docking studies on the antibacterial activity confirmed the
Conclusion: The twelve new compounds were synthesized and studied for their antimicrobial activity.
The compounds appeared to be promising antimicrobial agents and could be the lead compounds for
new, more potent drugs. According to the docking prediction, the compounds could be MurB inhibitors.