Beta-lactamase inhibiting compounds of the formula ##STR1## or a pharmaceutically acceptable acid addition or carboxylate salt thereof; where n is zero, 1 or 2; X.sub.3 is H or Br, R.sup.1 is H, the residue of certain carboxy-protecting groups or the residue of an ester group readily hydrolyzable in vivo; one of R.sup.12 and R.sup.13 is H and the other is vinyl, certain aryl, alkylthio, alkylsulfonyl or certain heterocyclyl, aminomethyl, thiocarboxyamido or amidino groups; one of R.sup.2 and R.sup.3 is H and the other is as disclosed for the other of R.sup.12 and R.sup.13, or is Cl or CH.sub.2 OH, and R.sup.18 is H or certain acyl groups; intermediates useful in their production, methods for their preparation and use, and pharmaceutical compositions containing them.
β-内酰胺酶抑制化合物的
化学式为##STR1##或其药学上可接受的酸加合物或
羧酸盐。其中n为0、1或2;X.sub.3为H或Br,R.sup.1为H,某些羧基保护基的残基或易于在体内
水解的酯基的残基;R.sup.12和R.sup.13中的一个为H,另一个为
乙烯基,某些芳基,烷基
硫醇,烷基磺酰或某些杂环基,
氨甲基,
硫代羧酰胺或
氨基甲酰基;R.sup.2和R.sup.3中的一个为H,另一个与R.sup.12和R.sup.13的另一个相同,或为Cl或CH.sub.2 OH,R.sup.18为H或某些酰基;它们生产的中间体,制备和使用方法以及含有它们的药物组成物。