Vancomycin purification improvement and product
    2.
    发明公开
    Vancomycin purification improvement and product 失效
    Reinigung von Vancomycin und Produkt。

    公开(公告)号:EP0145484A2

    公开(公告)日:1985-06-19

    申请号:EP84308610.9

    申请日:1984-12-11

    IPC分类号: C07K9/00

    CPC分类号: C07K9/008

    摘要: Vancomycin reacts with phosphoric acid to form a vancomycin diphosphate salt form that is highly crystalline when hydrated. An improved process for isolating vancomycin from an aqueous solution comprises formation of vancomycin diphosphate.

    摘要翻译: 万古霉素与磷酸反应形成万古霉素二磷酸盐形式,当水合时,它是高度结晶的。 从水溶液中分离万古霉素的改进方法包括形成万古霉素二磷酸盐。

    Novel cephalosporin salt and its use in a purification process
    3.
    发明公开
    Novel cephalosporin salt and its use in a purification process 失效
    新型CEPHALOSPORIN盐及其在净化过程中的使用

    公开(公告)号:EP0078671A3

    公开(公告)日:1984-08-08

    申请号:EP82305743

    申请日:1982-10-28

    发明人: Yang, Kuo Shang

    CPC分类号: C07D501/22

    摘要: Syn-7-[(2-amino-4-thiazolyl) (methoxyimino)-acetyl]-amino>-3-methyl-3-cephem-4-carboxylic acid hydrochloride is prepared by mixing the corresponding free base wherein the oxime is in the syn configuration with hydrochloric acid in a solvent, and separating crystals of the salt. The process is useful in purification of the free base.

    An improved process for cephalosporin intermediates
    4.
    发明公开
    An improved process for cephalosporin intermediates 失效
    一种改进的头孢菌素中间体方法

    公开(公告)号:EP0175544A2

    公开(公告)日:1986-03-26

    申请号:EP85306449.1

    申请日:1985-09-11

    IPC分类号: C07D501/18

    CPC分类号: C07D501/04 C07D501/18

    摘要: 57 7β-Amino-3-(1-pyridiniummethyl)-3-cephem-4-carboxylate dihydrochloride salt is obtained as the crystalline dihydrate directly from the N-deacylation reaction mixture by mixing said reaction mixture with acetonitrile, acetone or isopropyl alcohol, each containing 5% to 10% water.

    摘要翻译: 通过将所述反应混合物与乙腈,丙酮或异丙醇各自混合,直接由N-脱酰反应混合物得到577β-氨基-3-(1-吡啶鎓甲基)-3-头孢烯-4-羧酸盐二盐酸盐作为结晶二水合物 含有5%至10%的水。

    Antibiotic crystalline epimer, its preparation and pharmaceutical composition containing it
    9.
    发明公开
    Antibiotic crystalline epimer, its preparation and pharmaceutical composition containing it 失效
    结晶抗生素差向异构体,其制备方法和含有该药物组合物。

    公开(公告)号:EP0018811A1

    公开(公告)日:1980-11-12

    申请号:EP80301392.9

    申请日:1980-04-28

    发明人: Yang, Kuo Shang

    IPC分类号: C07D498/04 A61K31/535

    CPC分类号: C07D505/00

    摘要: The diamonium salt of the oxa-ß-lactam antibiotic of the formula
    wherein the chiral center of the a-carboxy-p-hydroxy-phenylacetyl side chain has the D-configuration in crystalline form substantially free of the L-diammonium salt. This invention also relates to a process for preparing the crystalline D-diammonium salt of the above formula.

    摘要翻译: 式的氧杂β-内酰胺抗生素的盐diamonium ... ... worin所述α-羧基 - 对 - 羟基 - 苯乙酰侧链的手性中心具有结晶形式的D-构型基本上不含L-的 二铵盐。 所以本发明涉及制备上述式I的结晶D-二铵盐的方法。