New 2-oxo-1-azetidine sulfonic acid derivatives with an aminoalkyl substituted "anti" (E-isomer) oxyimino group in the acylamino substituent at the 3 position of the monobactam ring. These compounds are potent inhibitors of bacterial .beta.-lactamases. These compounds can be used in combination with .beta.-lactam antibiotics to increase the effectiveness of the .beta.-lactam antibiotics in fighting infection caused by .beta.-lactamase producing bacteria.
新的2-氧代-1-氮杂环
丙磺酸衍
生物,其在单环β内酰胺取代物的3位置具有
氨基烷基取代的“反式”(E-异构体)氧
亚胺基团。这些化合物是细菌β-内酰胺酶的有效
抑制剂。这些化合物可以与β-内酰胺类抗生素结合使用,以增加β-内酰胺类抗生素对由β-内酰胺酶产生的细菌感染的有效性。