ceftazidime , which is a new semi-synthetic drug , possesses as side chains an aminothiazole ring and a propylcarboxy moiety at position 7 , and at position 3 a pyridine group similar to that of cephaloridine : these structural modifications of the cephalosporin nucleus confer upon ceftazidime increased affinity for penicillin-binding-proteins of gram negative bacilli , a high stability to beta-lactamases and an enlarged spectrum of antibacterial activity including pseudomonas and acinetobacter .
C0007559
ceftazidime
C0279516
antibacterial