Substituted bicyclic beta-lactams of Formula I: (I), are β-lactamase inhibitors, wherein a, X, R
1
and R
2
are defined herein. The compounds and pharmaceutically acceptable salts thereof are useful in the treatment of bacterial infections in combination with β-lactam antibiotics. In particular, the compounds can be employed with a β-lactam antibiotics (e.g., imipenem, piperacillin, or ceftazidime) against microorganisms resistant to β-lactam antibiotics due to the presence of the β-lactamases.
化合物I的替代双环β-内酰胺(I)是β-内酰胺酶抑制剂,其中a、X、R1和R2如此定义。该化合物及其药学上可接受的盐在与β-内酰胺类抗生素联合治疗细菌感染方面是有用的。特别地,该化合物可与β-内酰胺类抗生素(例如
亚胺培南、
哌拉西林或
头孢他啶)一起用于对抗由β-内酰胺酶存在而对β-内酰胺类抗生素产生耐药性的微
生物。