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    • 2. 发明授权
    • Oxidation process for preparing 3-formyl-cephem derivatives
    • 制备3-甲酰基头孢烯衍生物的氧化方法
    • US09006422B2
    • 2015-04-14
    • US13696151
    • 2011-05-09
    • Ivan Joseph Maria Vervest
    • Ivan Joseph Maria Vervest
    • C07D501/34
    • C07D501/04C07D501/34
    • 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.
    • 本发明涉及将3-羟基甲基头孢烯衍生物氧化为相应的3-甲酰基头孢烯衍生物的改进方法。 特别地,该氧化方法用于制备7- [2-(5-氨基 - [1,2,4]噻二唑-3-基)-2-羟基亚氨基 - 乙酰基氨基] -3-甲酰基-8-氧代 -5-硫杂-1-氮杂 - 双环[4.2.0]辛-2-烯-2-羧酸衍生物,其使用10-I-3型的高价碘氧化剂的组合,例如 双(乙酰氧基)碘 - 苯(BAIB)和催化剂如2,2,6,6-四甲基-1-哌啶氧基(TEMPO)。 这些式(I)化合物是合成头孢匹罗的中间体。
    • 3. 发明申请
    • OXIDATION PROCESS FOR PREPARING 3-FORMYL-CEPHEM DERIVATIVES
    • 用于制备3-甲基孕酮衍生物的氧化方法
    • US20130066065A1
    • 2013-03-14
    • US13696151
    • 2011-05-09
    • Ivan Joseph Maria Vervest
    • Ivan Joseph Maria Vervest
    • C07D501/57
    • C07D501/04C07D501/34
    • 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.
    • 本发明涉及将3-羟基甲基头孢烯衍生物氧化为相应的3-甲酰基头孢烯衍生物的改进方法。 特别地,该氧化方法用于制备7- [2-(5-氨基 - [1,2,4]噻二唑-3-基)-2-羟基亚氨基 - 乙酰基氨基] -3-甲酰基-8-氧代 -5-硫杂-1-氮杂 - 双环[4.2.0]辛-2-烯-2-羧酸衍生物,其使用10-I-3型的高价碘氧化剂的组合,例如 双(乙酰氧基)碘 - 苯(BAIB)和催化剂如2,2,6,6-四甲基-1-哌啶氧基(TEMPO)。 这些式(I)化合物是合成头孢匹罗的中间体。