Process for the preparation of a 3-substituted thio-3-cephem compound
    4.
    发明授权
    Process for the preparation of a 3-substituted thio-3-cephem compound 失效
    3-取代的硫代-3-头孢烯化合物的制备方法

    公开(公告)号:US5294705A

    公开(公告)日:1994-03-15

    申请号:US853730

    申请日:1992-06-03

    CPC分类号: C07D501/00 Y02P20/55

    摘要: An ester of 7-acylamido-3-acylthio-3- or -2-cephem-4-carboxylic acid represented by general formula (1) ##STR1## wherein R.sup.1 is an acyl group, R.sup.2 is a carboxyl-protecting group, R.sup.3 is a lower alkyl group, an aryl group or a substituted aryl group, or a mixture of two or more of said ester is used as the starting compound and is reacted wit a tertiary amine and also a secondary amine. Then the tertiary amine salt compound as formed as the reaction product is reacted with a compound of formula (4)R.sup.4 --X (4)wherein R.sup.4 is a lower alkyl group, a cycloalkyl group or a heterocyclic group or a heterocyclic group-substituted methyl group and X is a leaving group, whereby the desired ester of 7-acylamido-3-substituted thio-3-cephem-4-carboxylic acid of formula (5) ##STR2## can be produced preferentially, conveniently and efficiently.

    摘要翻译: PCT No.PCT / JP90 / 01599 Sec。 371日期:1992年6月3日 102(e)日期1992年6月3日PCT 1990年12月7日PCT PCT。 公开号WO91 / 09037 1991年6月27日,由通式(1)表示的7-酰基氨基-3-酰硫基-3-或2-头孢烯-4-羧酸酯(*化学结构*)(1)其中R1为 酰基,R2为羧基保护基,R3为低级烷基,芳基或取代芳基,或两种或多种所述酯的混合物用作起始化合物,并与叔胺 以及仲胺。 然后将作为反应产物形成的叔胺盐化合物与式(4)R4-X(4)的化合物反应,其中R4是低级烷基,环烷基或杂环基或杂环基取代的甲基 并且X是离去基团,由此可以优选地,方便地制备所需的式(5)的7-酰基酰胺基-3-取代的硫代-3-头孢烯-4-羧酸的酯(*化学结构*)(5) 并有效地。

    Cephalosporin derivatives
    5.
    发明授权
    Cephalosporin derivatives 失效
    头孢菌素衍生物

    公开(公告)号:US4785090A

    公开(公告)日:1988-11-15

    申请号:US704077

    申请日:1985-02-21

    摘要: This is a class of antibacterial compounds of the formula: ##STR1## wherein Y is straight or branched alkyl or alkenyl chain, cycloalkanomethyl of 3-6 carbon atoms, each group being optionally substituted by halogen, or a group ##STR2## wherein n is 0 or an integer of 1-3, A is a group --COR.sup.3 wherein R.sup.3 is hydroxy, a group ##STR3## wherein R.sup.4 and R.sup.5, which may be the same or different, are hydrogen or alkyl of 1-5 carbon atoms, a group ##STR4## or a 5- or 6-membered heterocyclic group containing nitrogen and/or sulfur, and R.sup.1 and R.sup.2, which may be the same or different, are hydrogen, alkyl of 1-5 carbon atoms, or R.sup.1 and R.sup.2 may be combined together to form cycloalkylidene of 3-5 carbon atoms, and Z is a group of the formula: ##STR5## wherein m is 0 or an integer of 3-5, R.sup.6 is hydrogen or alkyl of 1-3 carbon atoms, and R.sup.7, when m is an integer of 3-5, is alkyl of 1-5 carbon atoms, alkenyl, cyclopropyl, a group --(CH.sub.2).sub.p B wherein p is 0 or an integer of 1-3 and B is amino, alkyl-substituted amino, hydroxy, carboxy, carbamoyl, trifluoromethyl, sulfonic acid, sulfonic acid amide, alkylthio or cyano or, when m is 0, is alkyl of 1-5 carbon atoms, which may optionally be substituted by halogen, alkenyl, a group ##STR6## wherein R.sup.8 is hydrogen, alkyl of 1-4 carbon atoms or phenyl, or cyclopropyl, and a salt thereof.

    摘要翻译: 这是一类具有下式的抗菌化合物:其中Y是直链或支链烷基或烯基链,3-6个碳原子的环烷基甲基,每个基团任选被卤素取代,或基团< 其中n为0或1-3的整数,A为基团-COR 3,其中R 3为羟基,其中R 4和R 5可以相同或不同,为氢或1-5碳的烷基 原子,基团或含有氮和/或硫的5-或6-元杂环基,R 1和R 2可以相同或不同,为氢,1-5个碳原子的烷基或R1 并且R 2可以组合在一起形成3-5个碳原子的亚烷基,Z是下式的基团:其中m是0或3-5的整数,R6是氢或1-3个碳的烷基 原子和R 7,当m是3-5的整数时,是1-5个碳原子的烷基,烯基,环丙基,基团 - (CH 2)pB,其中p是0或1-3的整数,B是氨基 ,烷基取代的氨基 羟基,羧基,氨基甲酰基,三氟甲基,磺酸,磺酸酰胺,烷硫基或氰基,或当m为0时,其为1-5个碳原子的烷基,其可任选被卤素,链烯基,基团 其中R8是氢,1-4个碳原子的烷基或苯基,或环丙基及其盐。

    Cephalosporin derivatives
    9.
    发明授权
    Cephalosporin derivatives 失效
    头孢菌素衍生物

    公开(公告)号:US5332731A

    公开(公告)日:1994-07-26

    申请号:US623215

    申请日:1990-12-06

    CPC分类号: C07D501/00

    摘要: A new class of cephalosporin derivatives is provided, which is useful as antibacterial agent to be particularly suitable for oral administrations in mammals including man, and which is represented by general formula (I) ##STR1## wherein R.sup.1 is a hydrogen atom or a lower alkyl group; R.sup.2 is a hydrogen atom or an ester-forming group capable of being cleaved easily with an esterase existing in the digestive tracts; n is an integer of zero or 1; Z is a saturated heterocyclic group containing one or two oxygen atoms as the hetero-atoms with or without one or more lower alkyl substituents, or a pharmaceutically acceptable salt thereof.

    摘要翻译: 提供了一类新的头孢菌素衍生物,其可用作特别适合于包括人在内的哺乳动物的口服给药的抗菌剂,其由通式(I)表示,其中R 1是氢原子或 低级烷基; R2是能够容易地与存在于消化道中的酯酶裂解的氢原子或成酯基团; n是0或1的整数; Z是含有一个或两个氧原子作为具有或不具有一个或多个低级烷基取代基的杂原子的饱和杂环基,或其药学上可接受的盐。