申请人:Sumitomo Pharmaceuticals Company, Limited
公开号:US04962103A1
公开(公告)日:1990-10-09
A compound of the formula: ##STR1## wherein R.sub.1 is a hydrogen atom or a lower alkyl group, R.sub.2 is a hydrogen atom or a conventional protecting group for a carboxyl group, R.sub.0 is a hydrogen atom or a conventional protecting group for a hydroxyl group, X is a protected or unprotected amino group, a carboxyl group, a lower alkoxycarbonyl group, an ar(lower)alkyloxycarbonyl group, a cyano group, a hydroxyl group, a lower alkyloxy group, a lower alkylthio group, a lower alkylsulfonyl group or a group of either one of the following formulas: ##STR2## wherein R.sub.3 and R.sub.4, which may be the same or different, each represents a hydrogen atom or a lower alkyl group, or they are taken together to represent an alkylene chain to form, in combination with the adjacent nitrogen atom, a 3- to 7-membered cyclic amino group, --ZCOR.sub.5 (2) wherein Z represents --NH-- or --O-- and R.sub.5 represents an amino group, a mono(lower)alkylamino group, a di(lower)alkylamino group, a lower alkyloxy group or a lower alkyl group, ##STR3## wherein R.sub.6 represents a hydrogen atom or a lower alkyl group, --CH=N--R.sub.7 (4) wherein R.sub.7 represents a mono(lower)alkylamino group, a di(lower)alkylamino group or a lower alkyloxy group, or ##STR4## wherein R.sub.8, R.sub.9 and R.sub.10, which may be the same or different, each represents a hydrogen atom or a lower alkyl group, Y represents a hydrogen atom, a conventinal protecting group for an amino group or a group of either one of the following formulas: ##STR5## wherein R.sub.11 and R.sub.12, which may be the same or different, each represents a hydrogen atom or a lower alkyl group or ##STR6## wherein R.sub.6 is as defined above and n is an ingeter of 1 to 6, and a pharmacologically acceptable salt thereof, which is useful as an antimicrobial agent.
该化合物的结构式为:##STR1## 其中R.sub.1是氢原子或较低的烷基基团,R.sub.2是氢原子或羧基的常规保护基团,R.sub.0是氢原子或羟基的常规保护基团,X是受保护或未受保护的氨基、羧基、较低的烷氧羰基、芳基(烷基)氧羰基、氰基、羟基、较低的烷氧基、较低的烷硫基、较低的烷基磺酰基或以下任一式的基团:##STR2## 其中R.sub.3和R.sub.4,可以相同也可以不同,每个代表氢原子或较低的烷基基团,或者它们一起代表一条烷基链,与相邻的氮原子结合形成3-至7-成员环氨基基团,--ZCOR.sub.5 (2) 其中Z代表--NH--或--O--,R.sub.5代表氨基、单(较低)烷基氨基、双(较低)烷基氨基、较低的烷氧基或较低的烷基,##STR3## 其中R.sub.6代表氢原子或较低的烷基基团,--CH=N--R.sub.7 (4) 其中R.sub.7代表单(较低)烷基氨基、双(较低)烷基氨基或较低的烷氧基,或者##STR4## 其中R.sub.8、R.sub.9和R.sub.10,可以相同也可以不同,每个代表氢原子或较低的烷基基团,Y代表氢原子、氨基的常规保护基团或以下任一式的基团:##STR5## 其中R.sub.11和R.sub.12,可以相同也可以不同,每个代表氢原子或较低的烷基基团或##STR6## 其中R.sub.6如上定义,n是1至6的整数,以及其药理学上可接受的盐,可用作抗微生物剂。