[EN] AN ADVANCED AND COST-EFFECTIVE PROCESS FOR PREPARING HIGHLY PURE VILDAGLIPTIN<br/>[FR] PROCÉDÉ ÉCONOMIQUE ET AVANCÉ POUR LA PRÉPARATION DE VILDAGLIPTINE PURE
申请人:HARMAN FINOCHEM LTD
公开号:WO2015092806A1
公开(公告)日:2015-06-25
The present invention describes an improved process for preparing highly pure (S)-1-[N- (3-hydroxy-l-adamantyl) glycyl] pyrrolidine-2-carbonitrile known as Vildagliptin. Also the present invention discloses a novel insitu process for preparing an intermediate (2S)- l-(chloroacetyl)pyrrolidine-2-carbonitrile. Further, the present invention discloses a method of preparing undesired dimer impurity.
本发明描述了一种改进的工艺,用于制备高纯度的(S)-1-[N-(3-羟基-1-金刚烷基)甘氨基]吡咯烷-2-腈,即维格列普汀。此外,本发明还揭示了一种新颖的原位工艺,用于制备中间体(2S)-1-(氯乙酰基)吡咯烷-2-腈。此外,本发明还揭示了一种制备不需要的二聚体杂质的方法。