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    • 4. 发明申请
    • PROCESS FOR THE PRODUCTION OF CLAVULANIC ACID
    • 生产CLAVULANIC酸的方法
    • US20100055749A1
    • 2010-03-04
    • US12517139
    • 2007-11-29
    • Thomas Van Der DoesPiotr WnukowskiBengt Olof Mathias DanielssonHarold Monro Moody
    • Thomas Van Der DoesPiotr WnukowskiBengt Olof Mathias DanielssonHarold Monro Moody
    • C12P17/18
    • C12P17/188
    • The present invention relates to a process for preparation of a pharmaceutically acceptable metal salt of clavulanic acid comprising the steps of (a) fermenting of a microorganism capable of producing and excreting the clavulanic acid into the broth; (b) removing biomass and other solid material from the clavulanic acid containing fermentation broth obtained in step (a); (c) acidifying the solution obtained after step (b) to a pH between 1 and 3 and extracting the acidified solution with a partly or fully water-immiscible solvent and separating the clavulanic acid containing extract; (d) mixing the clavulanic acid containing extract obtained in step (c) with a metal donor and at least one additional cosolvent to result in an insoluble, preferably crystalline metal clavulanate salt with a yield of at least 80%; and (e) separating the insoluble, preferably crystalline, metal clavulanate salt from the mixture obtained in step (d).
    • 本发明涉及一种制备药学上可接受的克拉维酸的金属盐的方法,包括以下步骤:(a)将能够产生和排泄所述棒酸的微生物发酵到所述肉汤中; (b)从步骤(a)获得的含有棒酸的发酵液中除去生物质和其它固体物质; (c)将步骤(b)中获得的溶液酸化至1至3之间的pH,并用部分或完全与水不混溶的溶剂萃取酸化溶液并分离含有克拉维酸的提取物; (d)将步骤(c)中获得的含有克拉维酸的提取物与金属供体和至少一种额外的共溶剂混合,得到不溶性,优选结晶的克拉维酸盐,产率至少为80%; 和(e)从步骤(d)中获得的混合物中分离不溶性,优选结晶的金属克拉维酸盐。