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    • 3. 发明公开
    • METHOD FOR PREPARING FOSFOMYCIN AMMONIUM SALT
    • VERFAHREN ZUR HERSTELLUNG VON FOSFOMYCIN-AMMONIAKSALZ
    • EP2845859A1
    • 2015-03-11
    • EP12883714.3
    • 2012-11-09
    • Northeast Pharmaceutical Group Co., Ltd.
    • CHEN, Fapu
    • C07F9/655
    • C07F9/65505
    • Disclosed in the present invention is a method for preparing fosfomycin ammonium salts, comprising the following steps of: in an organic solvent, reacting fosfomycin phenylethylamine with an isocyanate, an isothiocyanate, a ketene, a dimer of an isocyanate, a dimer of an isothiocyanate, or a dimer of a ketene, and tromethamine; or, in an organic solvent, reacting fosfomycin bis-tromethamine with an isocyanate, an isothiocyanate, a ketene, a dimer of an isocyanate, a dimer of an isothiocyanate, or a dimer of ketene. The preparation method of the present invention can be achieved by only a one-step reaction, does not require a low-temperature ion-exchange column, has a high yield, low costs, fewer three-wastes, mild reaction conditions, and low energy consumption, and is convenient to operate and suitable for industrialization.
    • 本发明公开了一种磷霉素铵盐的制备方法,包括以下步骤:在有机溶剂中,将磷霉素苯乙胺与异氰酸酯,异硫氰酸酯,乙烯酮,异氰酸酯的二聚体,异硫氰酸酯的二聚体, 或乙烯酮的二聚体和氨基丁三醇; 或者在有机溶剂中使磷霉素双 - 氨基丁三醇与异氰酸酯,异硫氰酸酯,乙烯酮,异氰酸酯的二聚体,异硫氰酸酯的二聚体或乙烯酮的二聚体反应。 本发明的制备方法只需一步反应即可,不需要低温离子交换柱,产率高,成本低,三废物少,反应条件温和,能量低 消耗,操作方便,适合工业化。