申请人:TOYO SODA MANUFACTURING CO., LTD.
公开号:EP0075160A2
公开(公告)日:1983-03-30
A process for recovering a dipeptide derivative comprises admixing an organic solvent capable of forming a binary phase system with water with an aqueous mixture containing as a solid component a dipeptide ester derivative of the formula
wherein R, is a lower alkyl group, R2 is a side chain group of an amino acid, n is 1 or 2, X is a benzyloxycarbonyl group which can have a nuclear substituent and Y is a hydrogen ion or an ammonium derivative ion of the formula
wherein R3 is a side chain group of an amino acid and R. is a lower alkyl group, settling the resulting admixture to form
1. an organic solvent phase containing in a solid state a substantial amount of dipeptide derivative of the formula
wherein R1, R2, n and X are as defined above and Z is a hydrogen ion or an ammonium derivative ion of the formula
wherein R3 and R. are as defined above, and
2. an aqueous phase, separating the organic solvent phase from the aqueous phase, and recovering the dipeptide derivative from the organic solvent phase.
一种回收二肽衍生物的工艺包括将一种能与水形成二元相体系的有机溶剂与一种含水混合物混合,该混合物的固体成分是式中的二肽酯衍生物
其中 R 是低级烷基,R2 是氨基酸的侧链基团,n 是 1 或 2,X 是苄氧羰基,可带有核取代基,Y 是氢离子或式中的铵衍生物离子。
其中 R3 是氨基酸的侧链基团,R. 是低级烷基,将所得混合物沉淀形成
固态的有机溶剂相,其中含有大量式 2 的二肽衍生物
其中 R1、R2、n 和 X 如上定义,Z 为氢离子或式中的铵衍生物离子
其中 R3 和 R. 如上定义,以及 2.
水相,将有机溶剂相与水相分离,并从有机溶剂相中回收二肽衍生物。