The compounds of the general formula I
wherein R1 denotes hydrogen, hydroxymethyl or 1-hydroxyethyl, R2 denotes hydrogen or methyl and R3 denotes a pharmaceutically acceptable group which is bonded to the remaining part of the molecule by an oxygen-carbon single bond or a nitrogen-carbon single bond, and their pharmaceutically acceptable salts, esters and amide derivatives are broad spectrum antibiotics and ß-lactamase inhibitors.
通式 I 的化合物
其中,R1 表示氢、羟甲基或 1-羟乙基,R2 表示氢或甲基,R3 表示药学上可接受的基团,该基团通过氧-碳单键或氮-碳单键与分子的其余部分结合,其药学上可接受的盐、酯和酰胺衍
生物是广谱抗生素和 ß-内酰胺酶
抑制剂。