Antimicrobial compounds of the following formula are disclosed: ##STR1## wherein Het is selected from the goup consisting of pyrryl, pyrrolidyl, tetrazolyl of the formula ##STR2## wherein R.sup.1 is lower alkyl or benzyl and oxadiazolyl of the formula ##STR3## wherein R.sup.2 is lower alkyl, trifluoromethyl or --NH.phi.--; X is hydrogen and when Het is pyrryl or pyrrolidyl, X may be fluorine. Pharmaceutically acceptable carboxylate salts and esters of the acids are also disclosed.
以下公式的抗微
生物化合物已被披露:其中Het从以下组中选择:
吡啶基、
吡咯基、
噻唑基的公式为,其中R.sup.1是较低的烷基或苄基,以及氧代
噻唑基的公式为,其中R.sup.2是较低的烷基、三
氟甲基或--NH.phi.--;X是氢,当Het是
吡啶基或
吡咯基时,X可以是
氟。还披露了这些酸的药用可接受的
羧酸盐和酯。