Cefaloridine is a first-generation semisynthetic derivative of cephalosporin C. It is unique among cephalosporins in that it exists as a zwitterion. Cephaloridine was very effective to cure pneumococcal pneumonia. It has a high clinical and bacteriologica
ETX0282 is an orally available, broad spectrum inhibitor of class A and C β-lactamases. Entasis is developing ETX0282 in combination with cefpodoxime proxetil, an orally available cephalosporin approved for treatment of a variety of bacterial infections.