A New DNA Gyrase Inhibitor Subclass of the Cyclothialidine Family Based on a Bicyclic Dilactam−Lactone Scaffold. Synthesis and Antibacterial Properties
The DNA gyraseinhibitor cyclothialidine had been shown to be a valuable leadstructure for the discovery of new antibacterial classes able to overcome bacterial resistance to clinically used drugs. Bicyclic lactone derivatives containing in their 12−14-membered ring a thioamide functionality were reported previously to exhibit potentantibacterial activity against Gram-positive bacteria. Moderate