申请人:Fujisawa Pharmaceutical Co., Ltd.
公开号:US04016160A1
公开(公告)日:1977-04-05
The present invention relates to new cephalosporanic acids and their derivatives and preparation thereof. More particularly, it relates to 7-dihaloalkanoylamido-3-heterocyclic-thiomethyl-3-cephem-4-carboxylic acids, their derivatives and their nontoxic pharmaceutically acceptable salts, which possess an antibacterial activity, process for preparation of the same and compositions thereof.
本发明涉及新的头孢菌素酸及其衍生物及其制备方法。更具体地,涉及7-二卤代烷酰胺基-3-杂环硫甲基-3-头孢烯-4-羧酸,其衍生物及其无毒药用可接受盐,具有抗菌活性,其制备方法及其组成物。