申请人:Fujisawa Pharmaceutical Co., Ltd.
公开号:US04544653A1
公开(公告)日:1985-10-01
The present invention relates to a new syn-isomer of 3,7-disubstituted-3-cephem-4-carboxylic acid compounds and pharmaceutically acceptable salts thereof. More particularly, it relates to new syn-isomer of 3,7-disubstituted-3-cephem-4-carboxylic acid compounds and pharmaceutically acceptable salts thereof which have antibacterial activities and to processes for the preparation thereof, to pharmaceutical composition comprising the same, and to a method of using the same therapeutically in the treatment of infectious diseases in human beings and animals. New cephems disclosed herein are ##STR1## wherein R.sup.1 is ##STR2## R.sup.2 is lower alkyl, R.sup.3 is carboxy, R.sup.4 is carbamoyloxy methyl which may be substituted with a trihalo- (lower) alkanoyl; and R.sup.7 is amino, lower alkanoylamino or halo (lower)alkanoylamino.
本发明涉及3,7-二取代-3-头孢烷-4-羧酸化合物的新的syn-异构体及其药学上可接受的盐。更具体地,本发明涉及具有抗菌活性的新的3,7-二取代-3-头孢烷-4-羧酸化合物的syn-异构体及其药学上可接受的盐,以及其制备方法、包含它们的制药组合物,以及在治疗人类和动物感染性疾病方面的治疗方法。本文披露的新头孢菌素如下:##STR1##其中R.sup.1是##STR2##R.sup.2是较低的烷基,R.sup.3是羧基,R.sup.4是碳酰氧甲基,可以用三卤代(较低)酰基取代; R.sup.7是氨基,较低的烷酰氨基或卤代(较低)烷酰氨基。