Antibacterial compounds of the formula ##STR1## in which R.sub.1 is a cyclic or secondary acyclic amino group which independently has antibacterial activity: R.sub.2 is hydrogen, lower alkoxy, lower alkylthio or formamido; R.sub.3 is hydrogen or an organic group bonded through carbon, oxygen, sulfur or nitrogen; R.sub.4 is an electronegative acidic group; or R.sub.3 and R.sub.4 together form a heterocycle; and R.sub.5 is a hydrogen or lower alkyl, except when R.sub.3 and R.sub.4 form a heterocycle, in which case R.sub.5 is hydrogen only; and methods of using same.
公式为##STR1##的抗菌化合物,其中R.sub.1是一个具有抗菌活性的环状或次级无环
氨基基团:R.sub.2是氢、低烷氧基、低烷基
硫基或甲酰胺基;R.sub.3是氢或通过碳、氧、
硫或氮键合的有机基团;R.sub.4是一个电负酸性基团;或者R.sub.3和R.sub.4一起形成一个杂环;R.sub.5是氢或低烷基,除非R.sub.3和R.sub.4形成一个杂环,在这种情况下,R.sub.5仅为氢;以及使用相同方法。