7-amino-3-propenylcephalosporanic acid and esters thereof
    11.
    发明授权
    7-amino-3-propenylcephalosporanic acid and esters thereof 失效
    7-氨基-3-丙烯基头孢烷酸及其酯

    公开(公告)号:US4699979A

    公开(公告)日:1987-10-13

    申请号:US843537

    申请日:1986-03-25

    CPC分类号: C07D501/18

    摘要: This invention provides novel cephalosporin intermediates, 7.beta.-amino-3-[(Z)-1-propen-1-y1]-3-cephem-4-carboxylic acid and esters thereof having the general formula ##STR1## wherein the configuration of the 3-propenyl group is Z sometimes referred to as cis- and R is hydrogen or a conventional carboxy-protected group, or a physiologically hydrolyzable esterifying group, and acid addition salts thereof and the metal salts of the foregoing substance wherein R is hydrogen. These compounds are useful as intermediates for preparation of orally active cephalosporins.

    摘要翻译: 本发明提供了具有通式“IMAGE”的新型头孢菌素中间体7β-氨基-3 - [(Z)-1-丙烯-1-基] -3-头孢烯-4-羧酸及其酯,其中 3-丙烯基有时称为顺式 - ,R是氢或常规的羧基保护基团,或生理上可水解的酯化基团,及其酸加成盐和前述物质的金属盐,其中R是氢。 这些化合物可用作制备口服活性头孢菌素的中间体。