Process for preparing .beta.-lactam derivatives
    4.
    发明授权
    Process for preparing .beta.-lactam derivatives 失效
    制备β-内酰胺衍生物的方法

    公开(公告)号:US4464237A

    公开(公告)日:1984-08-07

    申请号:US406519

    申请日:1982-08-09

    IPC分类号: C07D499/00 C25B3/00 C25B3/06

    CPC分类号: C25B3/06 C07D499/00 C25B3/00

    摘要: This invention provides a process for preparing a .beta.-lactam derivative represented by the formula ##STR1## wherein R.sup.1 represents aralkyl group or aryloxy methyl group, Y represents the group ##STR2## (wherein R.sup.2 represents aryl-substituted lower alkyl group, aryloxy-substituted lower alkyl group or lower alkyl group optionally substituted with halogen atom and X represents halogen atom) or the group ##STR3## (wherein R.sup.2 and X are as defined above), the process comprising electrolyzing an azetidinone derivative of the formula ##STR4## wherein R.sup.1 and R.sup.2 are as defined above in the presence of hydrohalogenic acid and/or halide.

    摘要翻译: 本发明提供了一种制备由式IMA表示的β-内酰胺衍生物的方法,其中R1表示芳烷基或芳氧基甲基,Y表示基团(其中R2表示芳基取代的低级烷基,芳氧基取代的 低级烷基或任选被卤素原子取代的低级烷基,X表示卤素原子)或基团(其中R 2和X如上定义),该方法包括电解下式的氮杂环丁酮衍生物,其中R 1 和R 2如上所定义,在氢卤酸和/或卤化物的存在下。

    Process for preparing oxazolineazetidinone derivatives
    5.
    发明授权
    Process for preparing oxazolineazetidinone derivatives 失效
    制备恶唑啉氮杂环丁酮衍生物的方法

    公开(公告)号:US4379032A

    公开(公告)日:1983-04-05

    申请号:US407134

    申请日:1982-08-09

    CPC分类号: C07D498/04 C25B3/00

    摘要: This invention provides a process for preparing an oxazolineazetidinone derivative represented by the formula ##STR1## (wherein R.sup.1 represents hydrogen atom, alkyl group, alkenyl group, substituted or unsubstituted aralkyl group, substituted or unsubstituted aryl group, or substituted or unsubstituted aryloxymethyl group, R.sup.2 represents free or protected carboxyl group and R.sup.3 represents hydrogen atom or methoxy group) from a penicillin derivative represented by the formula ##STR2## wherein R.sup.1, R.sup.2 and R.sub.3 are as defined above.

    摘要翻译: 本发明提供了制备由式(1)表示的恶唑啉氮杂环丁酮衍生物的方法(其中R1表示氢原子,烷基,烯基,取代或未取代的芳烷基,取代或未取代的芳基或取代或未取代的芳氧基甲基 基团,R 2表示游离或保护的羧基,R 3表示氢原子或甲氧基),由式(2)表示的青霉素衍生物,其中R 1,R 2和R 3如上所定义。

    Process for preparing 2-oxycephalosporin derivatives
    9.
    发明授权
    Process for preparing 2-oxycephalosporin derivatives 失效
    2-羟基头孢菌素衍生物的制备方法

    公开(公告)号:US4401528A

    公开(公告)日:1983-08-30

    申请号:US407328

    申请日:1982-08-12

    CPC分类号: C07D501/04

    摘要: This invention provides a process for preparing 2-oxycephalosporin derivative represented by the formula ##STR1## wherein R.sup.1 represents hydrogen atom, acyl group, or lower alkoxycarbonyl group optionally substituted with halogen atom, R.sup.2 represents hydrogen atom, halogen atom or acyloxy group optionally substituted with halogen atom, R.sup.3 represents hydrogen atom, lower alkyl group optionally substituted with halogen atom, or phenyl-lower alkyl group which may be optionally substituted with nitro group, halogen atom or lower alkoxy group on the phenyl ring, and R.sup.4 represents lower primary or secondary alkyl or lower alkylcarbonyl, the process comprising electrolytically oxidizing a cephalosporin derivative represented by the formula ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3 are as defined above, in the presence of a lower carboxylic acid or lower primary or secondary alcohol, and a supporting electrolyte.

    摘要翻译: 本发明提供一种制备由式(I)表示的2-羟基头孢菌素衍生物的方法,其中R 1表示氢原子,酰基或任选被卤素原子取代的低级烷氧基羰基,R 2表示氢原子,卤素原子或酰氧基 任选被卤素原子取代,R 3表示氢原子,任选被卤素原子取代的低级烷基或苯基 - 可以任意被硝基,卤素原子或苯环上的低级烷氧基取代的苯基 - 低级烷基,R4表示低级 伯或仲烷基或低级烷基羰基,该方法包括在低级羧酸或较低级初级或次级级存在下电解氧化式(II)表示的头孢菌素衍生物,其中R 1,R 2和R 3如上定义。 酒精和支持电解质。