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    • 2. 发明申请
    • A CO-PRECIPITATED CEFEPIME COMPOSITION AND PROCESS FOR PREPARATION THEREOF
    • 共沉淀的头峰组合物及其制备方法
    • WO2005094800A3
    • 2005-11-24
    • PCT/IN2005000095
    • 2005-03-30
    • LUPIN LTDTYAGI OM DUTTCHAUHAN YOGENDRA KUMARSRIVASTAVA TUSHAR KUMAR
    • TYAGI OM DUTTCHAUHAN YOGENDRA KUMARSRIVASTAVA TUSHAR KUMAR
    • A61K31/546C07D501/00
    • A61K31/546
    • The present invention provides a stable and sterile composition of Cefepime with a pharmaceutically acceptable non-toxic organic and inorganic base in high purity which exhibits good thermal stability which is obtained by co precipitation of composition containing non-sterile Cefepime and non-sterile pharmaceutically acceptable base. The method of preparing the co-precipitated composition of Cefepime with pharmaceutically acceptable non-toxic base comprises of, i) dissolving a composition containing mixture of non sterile Cefepime and a non sterile pharmaceutically acceptable non-toxic organic or inorganic base in water to obtain a clear aqueous solution having a pH in the range of 3.5-7 and ii) filtration of aqueous solution through 0.2 micron membrane filter and then adding the clear aqueous solution to a suitable an organic solvent followed by stirring, filtration and drying.
    • 本发明提供了具有高纯度的药学上可接受的无毒有机和无机碱的稳定且无菌的头孢吡肟组合物,其显示出良好的热稳定性,其通过共沉淀包含非无菌头孢吡肟和非无菌药学上可接受的碱 。 制备头孢吡肟与药学上可接受的无毒碱的共沉淀组合物的方法包括:i)将含有非无菌头孢吡肟和非无菌药学上可接受的无毒有机或无机碱的混合物的组合物溶解于水中以获得 澄清的pH值为3.5-7的水溶液,和ii)通过0.2微米膜过滤器过滤水溶液,然后将澄清的水溶液加入合适的有机溶剂中,随后搅拌,过滤并干燥。
    • 8. 发明申请
    • A METHOD FOR MANUFACTURE OF CEFTIOFUR
    • 一种制造CEFTIOFUR的方法
    • WO2004039811A3
    • 2004-08-12
    • PCT/IN0300345
    • 2003-10-27
    • LUPIN LTDTYAGI OM DUTTRICHHARIYA SANTOSH KUMARPAWAR RAJESH KUMAR RAMCHANDRACHAVAN YUVARAJ ATMARAM
    • TYAGI OM DUTTRICHHARIYA SANTOSH KUMARPAWAR RAJESH KUMAR RAMCHANDRACHAVAN YUVARAJ ATMARAM
    • C07D417/14C07D501/36
    • C07D417/14
    • A process for preparation of ceftiofur of formula (I) of high purity and substantially free from impurities is disclosed. The process comprises reacting [2-(2-aminothiazol-4-yl)]-2-syn-methoxyimino acetic acid-2-benzothiazolyl thioester of formula (II), with 7-amino-3-(2-furanylcarbonylthiomethyl)-3-cephem-4-carboxylic acid of formula (III) in the presence of a mixture of an water-immescible inert organic solvent and water and in the presence of a organic base and isolating ceftiofur of formula (I) substantially free of impurities by, d) adding water to the reaction mixture and selectively partitioning the impurities in the organic phase and ceftiofur (I) in the form of a salt with the base in the aqueous phase, e) acidifying the aqueous phase containing ceftiofur (I) in the form of a salt with the base in the presence of a mixture containing a water-miscible and a water-immiscible organic solvent and in the presence of a saturated aqueous solution of an alkali or alkaline earth containing salt, to partition ceftiofur (I) in the organic phase, and f) isolating ceftiofur (I) of high purity and substantially free of impurities by evaporation of the organic solvent or precipitation by addition of a co-solvent.
    • 公开了一种制备高纯度且基本上不含杂质的式(I)头孢噻呋的方法。 该方法包括使式(II)的[2-(2-氨基噻唑-4-基)] - 2-顺式 - 甲氧基亚氨基乙酸-2-苯并噻唑基硫酯与7-氨基-3-(2-呋喃羰基硫甲基)-3 (III)的头孢烯-4-羧酸在水不可渗透的惰性有机溶剂和水的混合物存在下并且在有机碱存在下反应并分离基本上不含杂质的式(I)头孢噻呋, d)向反应混合物中加入水并选择性分配有机相中的杂质和与水相中的碱形成盐形式的头孢噻呋(I),e)将含有头孢噻呋(I)的水相酸化成形式 在含有水混溶性和水不混溶性有机溶剂的混合物存在下,在含碱金属盐或碱土金属盐的饱和水溶液存在下,将所述碱与盐分离,以将头孢噻呋(I)分配到 有机相,和f)分离高纯度和基本的头孢噻呋(I) y通过蒸发有机溶剂而不含杂质或通过加入共溶剂沉淀。
    • 9. 发明申请
    • PROCESSES FOR PREPARATION OF AMORPHOUS CEFEPIME ACID ADDITION SALTS
    • 制备非晶形磷酸添加剂的方法
    • WO2006109324A3
    • 2007-04-05
    • PCT/IN2006000125
    • 2006-04-12
    • LUPIN LTDTYAGI OM DUTTMEHARE KISHOR GULABRAODESHMUKH SANJAY
    • TYAGI OM DUTTMEHARE KISHOR GULABRAODESHMUKH SANJAY
    • C07D501/00A61K31/545
    • C07D501/00C07D501/56
    • The present invention provides processes for the preparation amorphous form of Cefepime acid addition salt in high purity which exhibits very good thermal stability on storage. The processes are simple and cost-effective. The selective solvent precipitation method comprises of: (a) dissolving cefepime acid addition salt or solvates thereof in a polar solvent, (b) addition of less polar solvent to the solution obtained in step (a) to precipitate out cefepime acid addition salt followed by isolation of solid by filtration and drying or alternatively, (a) dissolving cefepime acid addition salt or solvates thereof in a polar solvent, (b) addition of the solution obtained in step (a) to less polar solvent to precipitate out cefepime acid addition salt followed by isolation of solid by filtration and drying. The further method involves spray drying of solution of cefepime acid addition salt or solvates thereof prepared in a polar solvent.
    • 本发明提供了高纯度制备非晶态Cefepime酸加成盐的方法,其在储存时表现出非常好的热稳定性。 流程简单,成本效益高。 选择性溶剂沉淀法包括:(a)将头孢吡肟酸加成盐或溶剂合物溶解在极性溶剂中,(b)向步骤(a)获得的溶液中加入极性极少的溶剂,沉淀出头孢吡肟酸加成盐, 通过过滤和干燥分离固体,或者(a)将头孢吡肟酸加成盐或溶剂合物溶解在极性溶剂中,(b)将步骤(a)中获得的溶液加入到极性较小的溶剂中以沉淀出头孢吡肟酸加成盐 然后通过过滤和干燥分离固体。 另外的方法包括喷雾干燥在极性溶剂中制备的头孢吡肟酸加成盐或溶剂合物溶液。