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公开(公告)号:US5182383A
公开(公告)日:1993-01-26
申请号:US494272
申请日:1990-02-23
申请人: Bernhard C. Prager , Karl Wessely , Werner Veit
发明人: Bernhard C. Prager , Karl Wessely , Werner Veit
IPC分类号: A61K31/545 , C07D501/46
CPC分类号: C07D501/46
摘要: The invention relates to new stable, crystalline forms of the t-butylester of ceftazidime of formula ##STR1## and the production thereof.
摘要翻译: 本发明涉及新的稳定的结晶形式的头孢他啶的叔丁基酯的结构式及其制备。
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公开(公告)号:US4954624A
公开(公告)日:1990-09-04
申请号:US385591
申请日:1989-06-29
申请人: Bernhard C. Prager
发明人: Bernhard C. Prager
IPC分类号: A61K31/545 , C07D501/38 , C07D501/46
CPC分类号: C07D501/46 , C07D501/04
摘要: New process for the production of the pentahydrate of ceftazidime of formula ##STR1## characterized in that the ester group of the compound of formula ##STR2## or an acid addition salt thereof, is cleaved by the sole use of aqueous hydrochloric acid, and the resulting ceftazidime is either crystallized directly from the reaction mixture as the pentahydrate by adding a base, or first of all the dihydrochloride of the ceftazidime is isolated by adding acetone and/or ethanol or another anti-solvent which is miscible with water, and this is converted into the pentahydrate by known methods.
摘要翻译: 用于生产式(III)的头孢他啶的五水合物的新方法,其特征在于式Ia化合物或其酸加成盐的酯基被单独使用 的盐酸水溶液,所得到的头孢他啶直接从反应混合物中以五水合物结晶,通过加入碱,或首先通过加入丙酮和/或乙醇或另一种反溶剂来分离头孢他啶的二盐酸盐, 与水混溶,通过已知方法将其转化为五水合物。
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公开(公告)号:US5580978A
公开(公告)日:1996-12-03
申请号:US421099
申请日:1995-04-13
申请人: Bernhard C. Prager , Hubert Sturm
发明人: Bernhard C. Prager , Hubert Sturm
IPC分类号: C07D20060101 , C07D501/04 , C07D501/06 , C07D501/18 , C07D501/26
CPC分类号: C07D501/18 , C07D501/04
摘要: The invention provides an improved process for the production of 7-amino-3-alkoxymethlycephem-4-carboxyl acid derivatives.
摘要翻译: 本发明提供了制备7-氨基-3-烷氧基甲硫氨酰-4-羧酸衍生物的改进方法。
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公开(公告)号:US5066798A
公开(公告)日:1991-11-19
申请号:US538795
申请日:1990-06-15
申请人: Bernhard C. Prager
发明人: Bernhard C. Prager
IPC分类号: A61K31/545 , C07D501/00 , C07D501/38 , C07D501/46
CPC分类号: C07D501/46
摘要: The invention provides crystallilne (6R, 7R)-7-[[2 ( 2-Amino-4-thiazolyl)-(Z)-2-(1-diphenylmethoxycarbonyl-1-methylethoxy)imino]acetamido]-3-(1--pyridiniummethyl)-3-cephem-4-carboxylate and a process for its production.
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公开(公告)号:US4826972A
公开(公告)日:1989-05-02
申请号:US57552
申请日:1987-06-03
申请人: Bernhard C. Prager
发明人: Bernhard C. Prager
IPC分类号: A61K31/545 , C07D501/00 , C07D501/38 , C07D501/46
CPC分类号: C07D501/46
摘要: The invention provides crystalline (6R, 7R)-7-[[2-(2-Amino-4-thiazolyl)-(Z)-2-(1-diphenylmethoxycarbonyl-1-methylethoxy)imino ]acetamido]-3-(1-pyridiniummethyl)-3-cephem-4-carboxylate and a process for its production.
摘要翻译: 本发明提供结晶(6R,7R)-7 - [[2-(2-氨基-4-噻唑基) - (Z)-2-(1-二苯基甲氧基羰基-1-甲基乙氧基)亚氨基]乙酰氨基] 1-吡啶鎓甲基)-3-头孢烯-4-羧酸酯及其制备方法。
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公开(公告)号:US4562253A
公开(公告)日:1985-12-31
申请号:US519830
申请日:1983-08-03
申请人: Bernhard C. Prager , Peter Punk , Heinrich Thaler
发明人: Bernhard C. Prager , Peter Punk , Heinrich Thaler
IPC分类号: C07B31/00 , C07B43/04 , C07C67/00 , C07D499/00 , C07D499/04 , C07D499/10 , C07D499/42 , C07D501/04 , C07D501/18
CPC分类号: C07D499/00
摘要: De-acylation of Penicillins and Cephalosporins to obtain the corresponding 6-aminopenicillanic acid or 7-aminocephalosporanic acid by the imino halide/imino ether process using long chain bases.
摘要翻译: 通过使用长链碱基的亚氨基卤化物/亚氨基醚方法,将青霉素和头孢菌素脱酰化得到相应的6-氨基青霉烷酸或7-氨基头孢烷酸。
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