DERIVATIVES OF 3-PYRROLIDYLIDENE-2-ONE-CEPHALOSPORINES
    9.
    发明公开
    DERIVATIVES OF 3-PYRROLIDYLIDENE-2-ONE-CEPHALOSPORINES 失效
    3- PYRROLIDYLIDEN-2-ON-CEPHALOSPORINDERIVATEN

    公开(公告)号:EP0812323A1

    公开(公告)日:1997-12-17

    申请号:EP96904802.0

    申请日:1996-02-16

    IPC分类号: C07D501 A61K31 A61P31

    CPC分类号: C07D501/00 Y02P20/55

    摘要: Cephalosporin derivatives of general formula (I) wherein R1 is hydrogen, lower alkyl, aralkyl, cycloalkyl, R3CO- or -C(R4R5)CO2R6; where R?4 and R5¿ are each independently hydrogen or lower alkyl, or R?4 and R5¿ taken together form a cycloalkyl group; R3 is hydrogen or lower alkyl and R6 is hydrogen, lower alkyl, lower alkenyl or a carboxylic acid protecting group. R2 is isobutyl, 2,2-dimethyl-propyl or cyclohexyl-methyl; n is 0, 1 or 2; X is CH or N; as well as readily hydrolyzable esters thereof, pharmaceutically acceptable salts of said compounds and hydrates of the compounds of formula (I) and of their esters and salts.