申请人:Fujisawa Pharmaceutical Co., Ltd.
公开号:US04443443A1
公开(公告)日:1984-04-17
This invention relates to novel cephem compounds of high antimicrobial activity, of the formula: ##STR1## wherein R.sup.1 is amino or a protected amino group; R.sup.2 is carboxy or a protected carboxy group; A is lower alkylene which may have an oxo group; R.sup.3 is carboxy, a protected carboxy group, lower alkyl, lower alkenyl, hydroxy (lower) alkyl, phenyl (lower) alkyl, phenyl, tolyl, xylyl, cumenyl, or naphthyl; and R.sup.4 is hydrogen or lower alkoxy, and pharmaceutically acceptable salts thereof.
本发明涉及一种高抗微生物活性的新型头孢菌素化合物,其化学式为:##STR1##其中,R^1是氨基或保护氨基基团;R^2是羧基或保护羧基基团;A是较低的烷基,可能具有氧代基;R^3是羧基、保护羧基基团、较低的烷基、较低的烯基、羟基(较低的)烷基、苯基(较低的)烷基、苯基、甲苯基、二甲苯基、叔丁基或萘基;R^4是氢或较低的烷氧基,并且其药物学上可接受的盐。