The disclosure 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 dsiclosure, 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.
本公开涉及一种通过对外消旋体进行分离制备式I的
2,3-二氨基丙酸衍
生物的对映体形式的方法,其中R1、R2和R3如本公开所定义。该分离方法是通过加入对映纯辅助剂形成对映异构盐,随后通过分数结晶进行分离,将外消旋体分离成其对映体。