申请人:Pfizer Inc.
公开号:US05602117A1
公开(公告)日:1997-02-11
.beta.-lactam antibiotics of formula (I) or a salt thereof, wherein R.sup.1 is hydrogen, methoxy of formamido; R.sup.2 is an acyl group, in particular that of an antibacterially active cephalosporin; CO.sub.2 R.sup.3 is a carboxy group or a carboxylate anion, or R.sup.3 is a readily removable carboxy protecting group (such as a pharmaceutically acceptable in vivo hydrolysable ester group); R.sup.4 represents up to four substituents selected from alkyl, alkenyl, alkynyl, alkoxy, hydroxy, halogen, amino, alkylamino, acylamino, dialkylamino, CO.sub.2 R, CONR.sub.2, SO.sub.2 NR.sub.2 (where R is hydrogen or C.sub.1-6 alkyl), aryl and heterocyclyl, which may be the same or different and wherein any R.sup.4 alkyl substituent is optionally substituted by any other R.sup.4 substituent; X is S, SO, SO.sub.2, O or CH.sub.2 ; Y is S, SO or SO.sub.2 ; and m is 1 or 2, useful in the treatment of bacterial infections in humans and animals. ##STR1##
β-内酰胺抗生素的化学式(I)或其盐,其中R.sup.1是氢、甲氧基或甲酰胺基;R.sup.2是酰基,特别是抗菌活性头孢菌素的酰基;CO.sub.2 R.sup.3是羧基或羧酸根离子,或R.sup.3是易于去除的羧基保护基(如药理学上可接受的体内水解酯基);R.sup.4代表最多四个取代基,选自烷基、烯基、炔基、烷氧基、羟基、卤素、氨基、烷基氨基、酰胺基、二烷基氨基、CO.sub.2 R、CONR.sub.2、SO.sub.2 NR.sub.2(其中R为氢或C.sub.1-6烷基)、芳基和杂环基,可以相同也可以不同,其中任何R.sup.4烷基取代基可以选择性地被任何其他R.sup.4取代基取代;X是S、SO、SO.sub.2、O或CH.sub.2;Y是S、SO或SO.sub.2;m为1或2,用于治疗人类和动物的细菌感染。