Cephalosporin intermediate products
    10.
    发明授权
    Cephalosporin intermediate products 失效
    头孢菌素中间产物

    公开(公告)号:US5585485A

    公开(公告)日:1996-12-17

    申请号:US471915

    申请日:1995-06-06

    CPC分类号: C07D277/587 C07D417/12

    摘要: A cephalosporin intermediate of the formula ##STR1## where R.sub.3 is carboxyl, carboxylate, or a carboxylic acid ester group and,R.sub.8 and R.sub.9 are each independently hydrogen, halogen,(C.sub.1-4) alkyl, hydroxy, carboxamido,(C.sub.1-4) alkoxycarbonyl, amino,mono- (C.sub.1-4) alkylamino, di- (C.sub.1-4) alkylamino, ortogether are a 5 or 6-membered carbocyclic ring or an alkali metal, alkaline earth metal, or acid addition salt thereof. Valuable cephalosporin antibiotics can be produced from the cephalosporin intermediate products of formula I.

    摘要翻译: 其中R 3是羧基,羧酸酯或羧酸酯基团,且R 8和R 9各自独立地是氢,卤素,(C 1-4)烷基,羟基,甲酰氨基,(C 1 -C 4)烷基, C 1-4烷氧基羰基,氨基,单(C 1-4)烷基氨基,二 - (C 1-4)烷基氨基或一起为5或6元碳环或碱金属,碱土金属或酸加成盐 其中。 有价值的头孢菌素抗生素可由式I的头孢菌素中间产物生产。