[EN] PROCESS FOR THE PREPARATION OF ENANTIOMERIC FORMS OF 2,3-DIAMINOPROPIONIC ACID DERIVATIVES<br/>[FR] PROCÉDÉ POUR LA PRÉPARATION DE FORMES ÉNANTIOMÈRES DE DÉRIVÉS D'ACIDE 2,3-DIAMINOPROPIONIQUE
申请人:SANOFI SA
公开号:WO2012019967A1
公开(公告)日:2012-02-16
The invention relates to a process for the preparation of the enantiomeric forms of 2,3-diaminopropionic acid derivatives of formula (I), wherein R1, R2 and R3 are defined as in the claims, by racemate resolution. The separation of the racemate into its enantiomers takes place through formation of diastereomeric salts upon addition of an enantiomerically pure auxiliary, and subsequent separation by fractional crystallization.
该发明涉及通过拉丁酸盐的分离制备公式(I)的2,3-二氨基丙酸衍生物的对映体形式的过程,其中R1、R2和R3如权利要求中所定义,通过消旋体分离。消旋体分离成其对映体是通过添加对映纯辅助剂而形成二对映异构盐,然后通过分级结晶进行分离。