LAMINATED TABLET AND MANUFACTURING METHOD THEREFOR
申请人:Takeda Pharmaceutical Company Limited
公开号:EP2682110B1
公开(公告)日:2019-12-04
PROCESS FOR THE PREPARATION OF ALOGLIPTIN
申请人:Indoco Remedies Limited
公开号:EP3292112B1
公开(公告)日:2019-08-14
[EN] PROCESS FOR THE PREPARATION OF ALOGLIPTIN<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ALOGLIPTINE
申请人:MAPI PHARMA HK LTD
公开号:WO2010109468A1
公开(公告)日:2010-09-30
The present invention is based on the discovery of a process for preparing pyrimidin- dione compounds, especially alogliptin and its derivatives, which comprises the reaction of a urea derivative of formula (VIII) with a malonic acid or its derivatives to form intermediates of formulae (VII) or (VII-A), which are subsequently converted to a compound of formula (II) upon introduction of a leaving group X. Compound (II) then reacts with an amine to form compound (I), which is optionally converted to its salts of formula (IV).