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公开(公告)号:US20060009639A1
公开(公告)日:2006-01-12
申请号:US10535923
申请日:2003-11-19
申请人: Pandurang Deshpande , Gautam Das , Parven Luthra , Pramod Deshpande , Selvraj Subramanian , Ramakrishna Kamma
发明人: Pandurang Deshpande , Gautam Das , Parven Luthra , Pramod Deshpande , Selvraj Subramanian , Ramakrishna Kamma
IPC分类号: C07D501/14
CPC分类号: C07D501/00
摘要: An improved process for the preparation of cefpodoxime proxetil of the formula (I) the said process comprises reacting cefpodoxime acid with 1-haloethyl isopropyl carbonate of the formula (VI) where X represents halogen atom such as chlorine, bromine or iodine using a base such as tetramethylguanidine, di-isopropylethyl amine, 1,5-diazabicyclo(4.3.0)non-5-ene (DBN), 1,4-diazabicyclo[2.2.2]octane (DABCO) in the presence of a solvent at a temperature in the range of −30 ° C. to 30 ° C. to produce cefpodoxime proxetil of the formula (I) and isolating the pure cefpodoxime proxetil of the formula (I).
摘要翻译: 制备式(I)头孢泊肟酯的改进方法包括使头孢泊肟酸与式(Ⅵ)的1-卤代乙基异丙基碳酸酯反应,其中X代表卤素原子如氯,溴或碘,使用碱 作为四甲基胍,二异丙基乙胺,1,5-二氮杂双环(4.3.0)壬-5-烯(DBN),1,4-二氮杂双环[2.2.2]辛烷(DABCO),在溶剂存在下, 在-30℃至30℃的范围内,以制备式(I)的头孢泊肟酯,并分离式(I)的纯头孢泊肟衍生物。