Compounds of formula (I):
1
wherein R
1
, R
2
, R
3
, R
4
and n have any of the values defined in the specification, and their pharmaceutically acceptable salts, are useful for inhibiting simultaneously serine and metallo-&bgr;-lactamase enzymes, for enhancing the activity of &bgr;-lactam antibiotics, and for treating &bgr;-lactam resistant bacterial infections in a mammal. The invention also provides pharmaceutical compositions, processes for preparing compounds of formula I, and novel intermediates useful for the synthesis of compounds of formula I.
式(I)的化合物:
其中R1、R2、R3、R4和n的任何值均符合规范定义,并且它们的药学上可接受的盐,用于同时抑制
丝氨酸和
金属β-内酰胺酶酶,增强β-内酰胺类抗生素的活性,并治疗哺乳动物体内的β-内酰胺耐药细菌感染。本发明还提供了制备式(I)化合物的制药组合物、过程和用于合成式(I)化合物的新型中间体。