Disclosed are compounds of the general formula: ##STR1## wherein R.sub.1 is amino, an acylated amino or a protected amino group, X is hydrogen or methoxy, and R' is hydrogen, R or R.sup.4 wherein R is an organic residue attached to the azetidine ring through a carbon atom therein and R.sub.4 is azido, a halogen, an amino group which may optionally be acylated or a group of the formula --OR.sub.5, ##STR2## or --S--S--R.sub.5 wherein R.sub.5 is an organic residue and n is 0, 1 or 2, and pharmaceutically acceptable salts and esters thereof. The compounds have antimicrobial and/or .beta.-lactamase-inhibitory activity and are of value as drugs for human beings and domesticated animals.
揭示了一般式为:其中R₁为
氨基、酰化
氨基或保护
氨基,X为
氢或甲
氧基,R'为
氢、R或R⁴,其中R为有机残基,通过其中的
碳原子连接到
氮杂环上,R⁴为
叠氮基、卤素、
氨基(可选地酰化)或具有如下结构的基团--OR₅,或--S--S--R₅,其中R₅为有机残基,n为0、1或2,以及其药学上可接受的盐和
酯。这些化合物具有抗微
生物和/或β-内
酰胺酶抑制活性,并且作为人类和驯养动物的药物具有价值。