申请人:Fujisawa Pharmaceutical Company, Ltd.
公开号:US04923857A1
公开(公告)日:1990-05-08
The invention relates to an antimicrobial compound of the formula: ##STR1## in which R.sup.1 is carboxy or protected carboxy, R.sup.2 is hydroxy(lower)alkyl or protected hydroxy(lower)alkyl, R.sup.3 and R.sup.4 are each hydrogen or lower alkyl, and R.sup.5 is saturated 4 to 6-membered heteromonocyclic group containing 1 to 4 nitrogen atom(s), saturated 5 or 6-membered heteromonocyclic group containing 1 to 2 oxygen atom(s) and 1 to 3 nitrogen atom(s) or saturated 5 or 6-membered heteromonocyclic group containing 1 to 2 sulfur atom(s) and 1 to 3 nitrogen atom(s), wherein said aliphatic heterocyclic group may be substituted by one or more suitable substituent(s) selected from a group consisting of hydroxy, protected hydroxy, hydroxy(lower)alkyl, protected hydroxy(lower)alkyl, halogen, lower alkoxy, lower alkyl, lower alkoxy(lower)alkyl, imino, protected imino, lower alkylamino, protected lower alkylamino, mono(or di)-(lower)alkylcarbamoyloxy, lower alkylidene, lower alkanimidoyl and imino-protective group, or pharmaceutically acceptable salts thereof.
本发明涉及一种抗微生物化合物,其化学式为:##STR1## 其中,R.sup.1是羧基或保护羧基,R.sup.2是羟基(较低)烷基或保护羟基(较低)烷基,R.sup.3和R.sup.4分别是氢或较低烷基,R.sup.5是饱和的4至6元杂环基,包含1至4个氮原子,饱和的5或6元杂环基,包含1至2个氧原子和1至3个氮原子,或饱和的5或6元杂环基,包含1至2个硫原子和1至3个氮原子,其中所述的脂环杂环基可以被一个或多个适当的取代基所取代,所述取代基被选自羟基,保护羟基,羟基(较低)烷基,保护羟基(较低)烷基,卤素,较低烷氧基,较低烷基,较低烷氧基(较低)烷基,亚氨基,保护亚氨基,较低烷基氨基,保护较低烷基氨基,单(或双)-(较低)烷基氨基甲酰氧基,较低烷基亚甲基,较低烷基亚胺基和亚胺保护基所选的适当取代基组成,或其药学上可接受的盐。