申请人:Pzifer Inc.
公开号:US06020329A1
公开(公告)日:2000-02-01
.beta.-Lactam antibiotics of formula (I) or a salt thereof, wherein R.sup.1 is hydrogen, methoxy or formamido; R.sup.2 is an acy group; 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; R.sup.4 represents up to four substituents; X is S, SO, SO.sub.2, O or CH.sub.2 ; m is 1 or 2; and n is 0, useful in the treatment of bacterial infec ##STR1##
式(I)的.beta.-内酰胺抗生素或其盐,其中R.sup.1为氢、甲氧基或甲酰胺基;R.sup.2为酰基;CO.sub.2R.sup.3为羧基或羧酸盐,或R.sup.3为易于去除的羧保护基;R.sup.4代表多达四个取代基;X为S、SO、SO.sub.2、O或CH.sub.2;m为1或2;n为0,有用于治疗细菌感染的作用。