PROCESS FOR PRODUCING EXO-METHYLENEPENAM COMPOUNDS
    6.
    发明公开
    PROCESS FOR PRODUCING EXO-METHYLENEPENAM COMPOUNDS 失效
    VERFAHREN ZUR HERSTELLUNG VON EXO-METHYLENPENAM-DERIVATEN

    公开(公告)号:EP0999213A4

    公开(公告)日:2000-05-10

    申请号:EP98905768

    申请日:1998-03-05

    申请人: OTSUKA KAGAKU KK

    CPC分类号: C07D499/00

    摘要: A process for preparing an exo-methylenepenam compound represented by the formula (2) wherein cephem compound represented by the formula (1) is reduced with a metal having a standard oxidation-reduction potential of up to -0.3 (V/SCE) in an amount of at least one mole per mole of the cephem compound and with a metal compound having a higher standard oxidation reduction potential than the metal in an amount of 0.0001 to 10 moles per mole of the cephem compound to obtain the exo-methylenepenam compound wherein R is a hydrogen atom, amino or protected amino, R is a hydrogen atom, halogen atom, etc. R is a hydrogen atom or carboxylic acid protective group, X is a halogen atom, etc. wherein R , R and R are as defined above.d

    摘要翻译: 制备通式(2)的外型 - 亚甲基戊酰胺化合物的方法,其中R1代表氢原子,氨基或被保护的氨基; R2代表氢原子,卤素原子等; 和R 3代表氢原子或羧基保护基,其特征在于还原通式(1)的头孢烯化合物,其中R 1,R 2和R 3各自如上所定义; X表示卤素原子等,至少等摩尔量的标准氧化还原电位为-0.3(V / SCE)以下的金属和0.0001〜30摩尔每摩尔化合物的 具有比金属高的标准氧化还原电位的金属化合物。

    PROCESS FOR THE PREPARATION OF 3-ALKOXYMETHYLCEPHEMS
    7.
    发明公开
    PROCESS FOR THE PREPARATION OF 3-ALKOXYMETHYLCEPHEMS 失效
    VERFAHREN ZUR HERSTELLUNG VON 3-ALKOXYMETHYLCEPHEMEN

    公开(公告)号:EP0831156A4

    公开(公告)日:1999-05-19

    申请号:EP97906850

    申请日:1997-03-07

    申请人: OTSUKA KAGAKU KK

    CPC分类号: C25B3/02

    摘要: A process for the preparation of 3-alkoxymethylcephems, characterized by electrolytically oxidizing a 3-thiomethylcephem of general formula (I) (wherein R1 is hydrogen, amino or protected amino; R2 is optionally substituted aryl; and R3 is hydrogen or a carboxyl-protecting group) in the presence of a lower alcohol into a 3-alkoxymethylcephem of general formula (II) (wherein R1, R2 and R3 are each as defined above; and R4 is lower alkyl).

    摘要翻译: 一种制备3-烷氧基甲基头孢的方法,其特征在于电解氧化通式(I)的3-硫代甲基头孢烯(其中R1是氢,氨基或被保护的氨基; R2是任选取代的芳基;并且R3是氢或羧基保护 (II)(式中,R 1,R 2和R 3与上述相同,R 4为低级烷基)的3-烷氧基甲基头孢烯在低级醇的存在下进行反应。

    PROCESS FOR THE PRODUCTION OF BETA-LACTAM COMPOUNDS
    8.
    发明公开
    PROCESS FOR THE PRODUCTION OF BETA-LACTAM COMPOUNDS 失效
    PROCESS FORβ-内酰胺化合物的制备

    公开(公告)号:EP0759428A4

    公开(公告)日:1998-11-11

    申请号:EP96905014

    申请日:1996-03-07

    申请人: OTSUKA KAGAKU KK

    CPC分类号: C07D499/00 C07D205/09

    摘要: A process for the production of a halogenated β-lactam compound represented by general formula (2) which comprises replacing the hydroxyl group of a halogenated β-lactam compound represented by general formula (1) with a halogen atom or a leaving group. Another process for the production of an exomethylene penam compound represented by general formula (5) which comprises reducing a halogenated β-lactam compound represented by general formula (2) with at least the equimolar amount of a metal having a standard oxidation-reduction potential of -0.3 (V/SCE) or below and 0.0001 to 10 times by mol as much a metal compound having a standard oxidation-reduction potential higher than that of the former metal, or employing the electrolytic reduction method.

    PROCESS FOR THE PREPARATION OF CEPHEM COMPOUNDS
    10.
    发明公开
    PROCESS FOR THE PREPARATION OF CEPHEM COMPOUNDS 有权
    VERFAHREN ZUR HERSTELLUNG VON CEPHEM-VERBINDUNGEN

    公开(公告)号:EP1209160A4

    公开(公告)日:2002-10-30

    申请号:EP00956785

    申请日:2000-08-30

    申请人: OTSUKA KAGAKU KK

    CPC分类号: C07D501/00 Y02P20/55

    摘要: A process for the preparation of 3-alkenylcephem or 3-norcephem compounds represented by general formula (3), characterized by treating a 3-cephem compound of general formula (1) in a solvent with an alkenyl halide of general formula (2), a nickel catalyst, a metal having a standard redox potential of -0.3 (V/SCE) or below , and a compound of a metal having a standard redox potential higher than that of the above metal. Formula (1) (wherein R1 is hydrogen or the like; R2 is hydrogen or the like; R3 is hydrogen or a carboxyl-protecting group; and X is halogeno or the like). (Formula 2) R4-Y wherein R4 is optionally substituted 1-alkenyl; and Y is halogeno. Formula (3) (wherein R?1, R2, and R3¿ are each as defined above; and R5 is hydrogen or optionally substituted 1-alkenyl).

    摘要翻译: 1.一种制备式(3)的3-链烯基头孢烯化合物或3-去头孢烯化合物的方法,其特征在于式(2)的烯基卤,镍催化剂,高达-0.3(V / SCE) 在标准氧化还原电位和具有比金属更高的标准氧化还原电位的金属的化合物在溶剂中作用于式(1)的3-头孢烯化合物,其中R 1是 氢原子等,R 2为氢原子等,R 3为氢原子或羧酸保护基,X为卤素原子等,R 4 -Y其中R 4是具有或不具有取代基的1-烯基,Y是卤素原子其中R 1,R 2和R 3如上所定义,R 5是 氢原子或具有或不具有取代基的1-烯基。