Process for the preparation of cephalosporanic compounds
    1.
    发明授权
    Process for the preparation of cephalosporanic compounds 失效
    制备头孢菌素化合物的方法

    公开(公告)号:US5574154A

    公开(公告)日:1996-11-12

    申请号:US315329

    申请日:1994-09-29

    申请人: Omar Abu-Nasrieh

    发明人: Omar Abu-Nasrieh

    IPC分类号: C07D501/00 C07D501/06

    CPC分类号: C07D501/00

    摘要: The invention relates to a process for the preparation of a compound of the formula I or salts thereof ##STR1## wherein R.sub.1 is hydrogen or trityl,R.sub.2 is hydrogen, trityl, .dbd.NOCH.sub.3, .dbd.NOCH.sub.2 COOH, or .dbd.NOCCOOH(CH.sub.3).sub.2R.sub.3 is hydrogen, --CH.dbd.CH.sub.2, --CH.sub.2 COCH.sub.3, ##STR2## comprising (a) reacting a compound of the formula II ##STR3## wherein R.sub.1 and R.sub.2 are as defined above with a compound of the formula III ##STR4## wherein R.sub.3 is as defined above in the presence of a solvent; (b) refluxing the mixture in the presence of a base; and, (c) if required the compounds of the formula I so obtained are converted into salts thereof. The compounds of the formula I have antibacterial activity.

    摘要翻译: 本发明涉及制备式I化合物或其盐的方法,其中R1是氢或三苯甲基,R2是氢,三苯甲基,= NOCH3,= NOCH2COOH或= NOCCOOH(CH3)2 R3是 氢,-CH = CH 2,-CH 2 COCH 3,其中R 1和R 2如上定义,其中(a)使式II化合物II与式 式III其中R 3如上所定义,在溶剂存在下; (b)在碱的存在下回流混合物; 和(c)如果需要,所得到的式I化合物被转化为其盐。 式I的化合物具有抗菌活性。