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    • 9. 发明公开
    • 결정성 세포조프란 중간체의 제조방법
    • 制备晶体中间体的方法
    • KR1020090109256A
    • 2009-10-20
    • KR1020080034609
    • 2008-04-15
    • 주식회사 엔지켐생명과학
    • 이태석육진수이종수유창현이주철이철민김은경이완희
    • C07D501/02C07D487/04C07D403/02
    • Y02P20/55C07D501/18
    • PURPOSE: A method for producing a crystalline Cefozopran intermediate is provided to produce useful Cefozopran as antibiotics with high purity and high yield. CONSTITUTION: A method for producing a crystalline Cefozopran intermediate comprises: a step of reacting 7-aminocephalosporanic acid with acylating agent; a step of synthesizing a cephalosporanic acid derivative which amine group of site 7 is protected; a step of reacting cephalosporanic acid derivative with imidazo-[1,2-b]pyridazine; a step of synthesizing 7 beta-acylamino-3-[(imidazo-[1,2-b]pyridazinium-1-yl)methyl]-3-cephem-5-carboxylate; a step of removing amine group protection group; and a step of synthesizing 7 beta-acylamino-3-[(imidazo-[1,2-b]pyridazinium-1-yl)methyl]-3-cephem-5-carboxylate hydrochloride.
    • 目的:提供一种生产结晶Cefozopran中间体的方法,以生产有效的Cefozopran作为高纯度和高产率的抗生素。 构成:结晶Cefozopran中间体的制备方法包括:使7-氨基头孢烷酸与酰化剂反应的步骤; 合成位点7的胺基保护的头孢菌酸衍生物的工序; 使头孢菌酸衍生物与咪唑并[1,2-b]哒嗪反应的步骤; 合成7β-酰氨基-3 - [(咪唑并[1,2-b]哒嗪鎓-1-基)甲基] -3-头孢烯-5-羧酸酯的步骤; 去除胺基保护基的一个步骤; 和合成7β-酰基氨基-3 - [(咪唑并[1,2-b]哒嗪鎓-1-基)甲基] -3-头孢烯-5-羧酸酯盐酸盐的步骤。