申请人:Basilea Pharmaceutica International
公开号:US20150218189A1
公开(公告)日:2015-08-06
The present invention relates to an improved process for oxidizing 3-hydroxy-methyl-cephem derivatives to the corresponding 3-formyl-cephem derivatives. In particular this oxidation process is for the preparation of 7-[2-(5-amino-[1,2,4]thia-diazol-3-yl)-2-hydroxyimino-acetylamino]-3-formyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid derivatives of formula (I) using a combination of a hypervalent iodine oxidizing agent of the type 10-I-3 such as bis(acetoxy)iodo-benzene (BAIB) and a catalyst such as 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO). These compounds of formula (I) are intermediates in the synthesis of ceftobiprole.
本发明涉及一种改进的过程,用于将3-羟甲基头孢菌素衍生物氧化为相应的3-甲酰基头孢菌素衍生物。特别是,该氧化过程用于使用高价碘氧化剂10-I-3型,如双(乙酰氧基)苯并碘(BAIB)和催化剂2,2,6,6-四甲基-1-哌啶氧自由基(TEMPO)的组合制备公式(I)的7-[2-(5-氨基-[1,2,4]噻二唑-3-基)-2-羟基亚氨基乙酰基]-3-甲酰基-8-氧代-5-噻-1-氮杂-双环[4.2.0]辛-2-烯-2-羧酸衍生物。这些公式(I)的化合物是头孢替布罗合成的中间体。