申请人:Toyama Chemical Co., Ltd.
公开号:US05185330A1
公开(公告)日:1993-02-09
A penam derivative represented by the following general formula or a salt thereof: ##STR1## wherein R.sup.1 represents a hydrogen atom, an amino-protecting group or an acyl group; R.sup.2 represents a hydrogen atom or a lower alkyl group; R.sup.3 represents a hydrogen atom, a lower alkoxy group, a lower alkylthio group or a formamido group; R.sup.4 represents a protected or unprotected carboxy group or a craboxylato group; R represents a group of the formula, --NHR.sup.5 or --NR.sup.5 R.sup.6 (in which R.sup.5 and R.sup.6, which may be the same or different, represent protected or unprotected hydroxyl groups, cyano groups, sulfo groups, or unsubstituted or substituted lower alkyl, aryl, acyl, carbamoyl, sulfamoyl, lower alkylsulfonyl or heterocyclic groups) or a group of the formula, --N.dbd.CR.sup.7 R.sup.8 (in which R.sup.7 and R.sup.8, which may be the same or different, represent hydrogen atoms or protected or unprotected carboxyl groups, cyano groups or unsubstituted or substituted lower alkyl, lower alkenyl, lower alkynyl, aryl, amino, acyl, acyloxy, carbamoyl, carbamoyloxy, sulfamoyl, lower alkylthio, ureido or heterocyclic groups, or R.sup.7 and R.sup.8 may form a cycloalkene or a heterocyclic ring with the carbon atom to which R.sup.7 and R.sup.8 are attached); and n represents 1 or 2. The above penam derivative or its salt is very effective as antibacterial agents.
一种由以下一般式表示的
青霉素类衍
生物或其盐:##STR1##其中R.sup.1代表氢原子、
氨基保护基或酰基;R.sup.2代表氢原子或较低的烷基基团;R.sup.3代表氢原子、较低的烷氧基、较低的烷基
硫基或甲酰
氨基基;R.sup.4代表保护或未保护的羧基或
羧酸根基;R代表式--NHR.sup.5或--NR.sup.5 R.sup.6的基团(其中R.sup.5和R.sup.6,可以相同也可以不同,代表保护或未保护的羟基、
氰基、磺基或未取代或取代的较低烷基、芳基、酰基、
氨酰基、磺酰胺基、较低烷基磺酰基或杂环基团)或式--N.dbd.CR.sup.7 R.sup.8的基团(其中R.sup.7和R.sup.8,可以相同也可以不同,代表氢原子或保护或未保护的羧基、
氰基或未取代或取代的较低烷基、较低烯基、较低炔基、芳基、
氨基、酰基、酰氧基、
氨基甲酰基、磺酰胺基、较低烷基
硫基、
脲基或杂环基团,或R.sup.7和R.sup.8可能与R.sup.7和R.sup.8连接的碳原子形成环烯烃或杂环环);n代表1或2。上述
青霉素类衍
生物或其盐作为抗菌剂非常有效。