申请人:Fujisawa Pharmaceutical Co., Ltd.
公开号:US04463002A1
公开(公告)日:1984-07-31
This invention relates to novel cephem compounds of high antimicrobial activity comprising the syn-isomers of 7-substituted-3-cephem-4-carboxylic acid esters of the formula: ##STR1## wherein R is lower alkanoyloxy (C.sub.2 -C.sub.6)alkyl, isobutyryloxymethyl, 2-ethylbutyryloxymethyl or 3,3-dimethylbutyryloxymethyl, or salts thereof.
本发明涉及一种高抗菌活性的新型头孢菌素化合物,包括式中的7-取代-3-头孢烷-4-羧酸酯的syn-异构体:##STR1##其中,R是低碳酰氧(C.sub.2-C.sub.6)烷基,异丁酰氧甲基,2-乙基丁酰氧甲基或3,3-二甲基丁酰氧甲基,或其盐。