PROCESS FOR PREPARING ARPHAMENINE DERIVATIVES AND PHARMACEUTICAL COMPOSITIONS CONTAINING SUCH COMPOUNDS

摘要

The present invention relates to an arphamenine-related compound represented by the general formula: …… wherein R1 denotes a hydrogen atom or an amino-protecting group, R2 denotes a dimethylpyrimidinyl group, R3 denotes a hydrogen atom or a hydroxyl group, and R4 denotes a hydrogen atom or a carboxyl-protecting group, and a pharmaceutically acceptable salt thereof and a process for their preparation. The compounds have immunopotentiating activity and can, therefore, be used as medicaments.