Cephalosporins
    5.
    发明授权
    Cephalosporins 失效
    头孢菌素

    公开(公告)号:US4436904A

    公开(公告)日:1984-03-13

    申请号:US337380

    申请日:1982-01-06

    CPC分类号: C07D233/38

    摘要: Novel cephalosporin derivatives are described which have excellent antibiotic activity against pathogenic bacteria belonging to the Pseudomonas, Serratia and Enterobacter. The compounds have general formula ##STR1## in which R is hydrogen, acyloxy, carbamoyloxy, a substituted or unsubstituted pyridinium group or a group -S-Het in which Het represents a substituted or unsubstituted, hetero atom-containing, 5- or 6-membered heterocyclic ring, R' is hydrogen, alkali metal, an organic amine or an ester moiety, R.sub.1 and R.sub.2 are the same or different and are hydrogen or a lower alkyl and B stands for a 1,4-cyclohexadienyl group, a group ##STR2## in which Y is hydrogen, --OH or ##STR3## in which R.sub.5 is an alkyl of 1 to 5 carbon atoms, aryl or alkoxy having 1 to 4 carbon atoms, Z stands for hydrogen or halogen and p is an integer of 1 or 2, a furan group or a thiophene group. Methods of preparation are described.

    摘要翻译: 描述了对属于假单胞菌属,沙雷氏菌属和肠杆菌属的病原菌具有优异抗生素活性的新型头孢菌素衍生物。 所述化合物具有通式(I)其中R为氢,酰氧基,氨基甲酰氧基,取代或未取代的吡啶鎓基或-S-Het,其中Het表示取代或未取代的含杂原子的 5或6元杂环,R'是氢,碱金属,有机胺或酯部分,R 1和R 2相同或不同,为氢或低级烷基,B代表1,4- 环己二烯基,其中Y是氢的-OH基团,其中R 5是1到5个碳原子的烷基,R 1代表氢或卤素的芳基或烷氧基, p为1或2的整数,呋喃基或噻吩基。 描述制备方法。