[EN] IMPROVED PROCESS FOR THE MANUFACTURE OF CEFTRIAXONE SODIUM<br/>[FR] PROCEDE AMELIORE DESTINE A FABRIQUER DU SODIUM DE CEFTRIAXONE
申请人:WOCKHARDT LTD
公开号:WO2005105813A1
公开(公告)日:2005-11-10
A process for the production of (6R,7R)-7-[2-(2-Amino-4-thiazolyl)-2-synmethoxyimino)acetamido]-3-[[2,5-dihydro-6-hydroxy-2-methyl-5-oxo-as-triazin-3yl)thio]methyl]-8-oxo-5-thia-l-azabicyclo[4.2.0]-oct-2-ene-2-carboxylic acid (Ceftriaxone acid) in water is discussed. The synthesis is effected by condensing (7R)-7-Amino-3deacetoxy-3-[(2,5-dihydro-6-hydroxy-2-methyl-5-oxo-as-triazin-3-yl)thio]cephalosporanic acid (7-ACT) with 2-(2-chloroacetamido-4-thiazolyl)-2-syn-methoxyiminoacetyl chloride followed be deblocking amino function. Finally, (6R,7R)-7-[2-(2-Amino-4-thiazolyl)-2-synmethoxyimino)acetamido]-3-[[2,5-dihydro-6-hydroxy-2-methyl-5-oxo-as-triazin-3yl)thio]methyl]-8-oxo-5-thia-l-azabicyclo[4.2.0]-oct-2-ene-2-carboxylic acid (Ceftriaxone acid) is converted into Ceftriaxone disodium hemiheptahydrate in aqueous acetone using sodium-2-ethylhexanoate as sodium source. Isolation steps at every stage are quite short. The purity of the final product is obtained in more than 99 % by HPLC profile.
本文讨论了一种在水中生产(6R,7R)-7-[2-(2-氨基-4-噻唑基)-2-合成甲氧基亚胺基]乙酰胺]-3-[[2,5-二氢-6-羟基-2-甲基-5-氧代-三嗪-3-基)硫基]甲基]-8-氧代-5-硫-1-氮杂双环[4.2.0]辛-2-烯-2-羧酸(头孢曲松酸)的过程。该合成方法通过将(7R)-7-氨基-3-去乙酰氧基-3-[(2,5-二氢-6-羟基-2-甲基-5-氧代-三嗪-3-基)硫基]头孢菌素酸(7-ACT)与2-(2-氯乙酰胺基-4-噻唑基)-2-合成甲氧基亚胺基乙酰氯缩合,然后脱保护氨基功能。最后,(6R,7R)-7-[2-(2-氨基-4-噻唑基)-2-合成甲氧基亚胺基]乙酰胺]-3-[[2,5-二氢-6-羟基-2-甲基-5-氧代-三嗪-3-基)硫基]甲基]-8-氧代-5-硫-1-氮杂双环[4.2.0]辛-2-烯-2-羧酸(头孢曲松酸)在水合丙酮中使用2-乙基己酸钠作为钠源转化为头孢曲松二钠半七水合物。每个阶段的分离步骤非常短。通过HPLC分析,最终产品的纯度可达99%以上。