Cephalosporins and homologous compounds, process for their preparation and pharmaceutical compositions containing them
申请人:BEECHAM GROUP PLC
公开号:EP0354757A3
公开(公告)日:1991-05-29
β-Lactam antibiotics of the formula (Ia) or pharmaceutically acceptable salts or pharmaceutically acceptable in vivo hydrolysable esters thereof, and the use thereof, are disclosed:
wherein
R is hydrogen, methoxy or formamido;
R¹ is an acyl group, in particular that of an antibacterially active cephalosporin;
R² is optionally substituted alkyl, acyl, alkoxycarbonyl, halogen, aryl, heterocyclyl, carboxy, carboxamido, or cyano; CO₂R₃ is carboxy or a carboxylate anion; X is S,SO,SO₂,O or CH₂; and n is zero or an integer from 1 to 5.
Processes for the preparation of compounds together with intermediates for use therein are disclosed.
本文披露了式(Ia)的β-内酰胺类抗生素或其药学上可接受的盐或体内可水解的酯以及其用途。其中,R为氢、甲氧基或甲酰胺基;R¹为酰基,特别是抗菌活性头孢菌素的酰基;R²为可选的取代基的烷基、酰基、烷氧羰基、卤素、芳基、杂环烷基、羧基、羧酰胺基或氰基;CO₂R₃为羧基或羧酸盐离子;X为S、SO、SO₂、O或CH₂;n为零或1至5的整数。本文还披露了制备该类化合物的方法以及用于其中的中间体。