发明名称 |
PROCESS FOR PURIFYING 7-SUBSTITUTED-AMINO-DESACETOXY-CEPHALOSPORINES THROUGH THE USE OF FILTRATION MEMBRANES |
摘要 |
<p>Process for purifying 7-substituted aminodeacetoxycephalosporins through the use of filter membranes. A process for purification by ultrafiltration and/or nanofiltration with a cut-off for molecular weights over 10,000 Dalton and preferably over 2000 Dalton is described. For example cephalosporin-G of increased purity, represented by a 6-8% increase in the HPLC titre, with a reduction of 50% in absorbance, is obtained using this technique. The invention makes it possible for the purified products to be used directly in the synthesis of other antibiotic compounds without the need for intermediate isolation. <CHEM> R1 = H R2 = C6H5.CH2Co C6H5.0.CH2Co R3 = H, Na, K, ...</p> |
申请公布号 |
EP0841338(A1) |
申请公布日期 |
1998.05.13 |
申请号 |
EP19970908294 |
申请日期 |
1997.03.14 |
申请人 |
ANTIBIOTICOS, S.A. |
发明人 |
LOPEZ ORTIZ, JUAN FRANCISCO;FERRERO BARRUEGO, OSCAR;GONZALEZ DE PRADO, EMILIANO;VITALLER ALBA, ALEJANDRO;SALTO MALDONADO, FRANCISCO |
分类号 |
C07D501/22;C07D501/10;C07D501/12;C12P35/02;(IPC1-7):C07D501/12;C12P35/00 |
主分类号 |
C07D501/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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