申请人:Glaxo Laboratories Limited
公开号:US04228074A1
公开(公告)日:1980-10-14
.beta.-Lactam compounds of the formula (I) ##STR1## (wherein R represents an esterified carboxyl group, --NR.sup.1 R.sup.2 R.sup.3 represents the residue of a nitrogen base, and R.sup.4 represents a hydrogen atom, a hydroxyl group or acylated or etherified hydroxyl group or the residue of a sulphur nucleophile) are disclosed, together with processes for their preparation. The compounds are valuable intermediates for the preparation or purification of further .beta.-lactam compounds having .beta.-lactamase inhibitory activity.
本发明揭示了公式(I)的.beta.-内酰胺化合物:##STR1## (其中,R代表酯化的羧基,-NR.sup.1 R.sup.2 R.sup.3代表氮碱基的残基,R.sup.4代表氢原子、羟基或酰化或醚化的羟基或硫亲核剩余物),以及它们的制备过程。这些化合物是制备或纯化具有.beta.-内酰胺酶抑制活性的进一步.beta.-内酰胺化合物的有价值的中间体。