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    • 6. 发明申请
    • A PROCESS FOR THE PREPARATION OF SUBSTITUTED PHENYL ETHER COMPOUNDS AND ROSIGLITAZONE
    • 一种制备取代的苯基醚化合物和罗西他滨的方法
    • WO2007017095A1
    • 2007-02-15
    • PCT/EP2006/007315
    • 2006-07-25
    • SANDOZ AGLUDESCHER, JohannesKHAN, Rashid, Abdul, RehmanPAUL, Aniruddha
    • LUDESCHER, JohannesKHAN, Rashid, Abdul, RehmanPAUL, Aniruddha
    • C07D213/74C07D417/12A61K31/435A61P3/10
    • C07D417/12C07D213/74
    • A novel process for the preparation of a compound of the formula (II), which is useful as intermediate compound for the preparation of thiazolidinedione derivatives, such as rosiglitazone, pioglitazone, troglitazone and ciglitazone, is disclosed. The novel process comprising reacting a compound of the formula (III) with a compound of the formula (IV) in a mixture of a non-polar water immiscible organic solvent and water (two phase system) with an alkali metal hydroxide or an alkali metal carbonate as a base in the presence of a phase transfer catalyst. In the first aspect of the present invention comprising reacting 2-(N-methyl-N-(2- pyridyl) ethanol with 4-fluorobenzaldehyde in the mixture of a non-polar water immiscible organic solvent, preferably toluene, and water with an alkali metal hydroxide or an alkali metal carbonate as a base, preferably potassium hydroxide, in the presence of a phase transfer catalyst, e.g. tetra n-butylammonium hydrogensulphate or benzyltriethylammonium chloride, to obtain 4-[2-(N-methyl-N-(2- pyridyl)amino)ethoxy]benzaldehyde, which is the key intermediate for preparing rosiglitazone and its salts, e.g. maleate salt or phosphate salt, useful in the treatment of Type II diabetes.
    • 公开了制备式(II)化合物的新方法,其可用作制备噻唑烷二酮衍生物如罗格列酮,吡格列酮,曲格列酮和曲格列酮的中间体化合物。 该新方法包括使式(III)的化合物与式(IV)的化合物在非极性水不混溶的有机溶剂和水(两相体系)的混合物中与碱金属氢氧化物或碱金属 碳酸酯作为碱,在相转移催化剂存在下。 在本发明的第一方面,包括使2-(N-甲基-N-(2-吡啶基)乙醇与4-氟苯甲醛在非极性不溶于水的有机溶剂,优选甲苯和水与碱的混合物中反应 金属氢氧化物或碱金属碳酸盐作为碱,优选氢氧化钾,在相转移催化剂例如四正丁基铵硫酸氢铵或苄基三乙基氯化铵存在下反应,得到4- [2-(N-甲基-N-(2 - 吡啶基)氨基)乙氧基]苯甲醛,其是制备用于治疗II型糖尿病的罗格列酮及其盐例如马来酸盐或磷酸盐的关键中间体。