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 classification number: C07D277/587 C07D417/12

    Abstract: 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.

    Abstract translation: 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。

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