申请人:Toyama Chemical Co., Ltd.
公开号:US05300497A1
公开(公告)日:1994-04-05
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 an protected or unprotected carboxyl group or a carboxylato 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.
一种由下列通式表示的青霉烷衍
生物或其盐:##STR1## 其中R.sup.1表示氢原子,
氨基保护基或酰基;R.sup.2表示氢原子或较低的烷基;R.sup.3表示氢原子,较低的烷氧基,较低的烷基
硫基或甲酰胺基;R.sup.4表示保护或未保护的羧基或羧基酸盐基;R表示下列式的基,--NHR.sup.5或--NR.sup.5 R.sup.6(其中R.sup.5和R.sup.6,可以相同也可以不同,表示保护或未保护的羟基,
氰基,磺酰基或未取代或取代的较低烷基,芳基,酰基,
氨基甲酰基,磺酰胺基,较低烷基磺酰基或杂环基)或下列式的基,--N.dbd.CR.sup.7 R.sup.8(其中R.sup.7和R.sup.8,可以相同也可以不同,表示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,或R.sup.7和R.sup.8可以与R.sup.7和R.sup.8连接的碳原子形成环烯烃或杂环环);n表示1或2。上述的青霉烷衍
生物或其盐是非常有效的抗菌剂。