申请人:AJINOMOTO CO., INC.
公开号:EP0336705A2
公开(公告)日:1989-10-11
The invention relates to cephem compounds or salts thereof of the formula:
[in the formula, R¹ denotes hydrogen or an amino protective group, R² denotes an unsubstituted or substituted alkyl group, X denotes an O-bonded group or S-bonded group, and M¹ denotes hydrogen, carboxyl protective group or a cation and, as COOM¹, a carboxylate ion, and R³ denotes a group represented by the formula:
(in the formulae, Y¹ and Y² are identical or different and denote hydrogen, alkyl groups, halogen groups, hydroxyl groups or oxo groups, R denotes an alkyl group, and the bonding partner of the -X- group is positioned in the 1-position, 3-position or 4-position of the pyridine ring (but excluding the 1-position in the case of the pyridinium ring and the pyridine N-oxide ring)) (but excluding groups represented by the formula (II b) when X is an S-bonded group,], methods of making such compounds and antimicrobial agents incorporating them.
本发明涉及式中的头孢氨苄化合物或其盐:
[式中,R¹表示氢或氨基保护基,R²表示未取代或取代的烷基,X表示O键基或S键基,M¹表示氢、羧基保护基或阳离子,作为COOM¹,表示羧酸根离子,R³表示由式表示的基团:
(式中,Y¹ 和 Y² 相同或不同,表示氢、烷基、卤素基、羟基或氧代基团,R 表示烷基,-X- 基团的键合伙伴位于 1-位、X-基团的键合伙伴位于吡啶环的 1-位、3-位或 4-位(但不包括吡啶鎓环和吡啶 N-氧化物环的 1-位))(但不包括 X 为 S 键合基团时由式(II b)表示的基团,]、制造此类化合物的方法以及含有此类化合物的抗菌剂。