申请人:F. HOFFMANN-LA ROCHE AG
公开号:EP1136475A1
公开(公告)日:2001-09-26
The present invention relates to a new process for the preparation of compounds of the general formulae
wherein
R1- R4are, independently from each other, hydrogen, halogen, hydroxy, amino, nitro, lower-alkyl-sulfonylamido, or acetamido;
R5-R8are, independently from each other hydrogen, lower-alkyl, halogen, trifluoromethyl or lower-alkoxy;
and their pharmaceutically acceptable acid addition salts.
The compounds of formulae I-a and I-b are NMDA (N-methyl-D-aspartate)-receptor-subtype selective blockers, which have a key function in modulating neuronal activity and plasticity which makes them key players in mediating processes underlying development of CNS including learning and memory formation and function.
本发明涉及一种制备通式如下化合物的新工艺
其中
R1- R4互为氢、卤素、羟基、氨基、硝基、低级烷基磺酰氨基或乙酰氨基;
R5-R8 相互独立地为氢、低级烷基、卤素、三氟甲基或低级烷氧基;
及其药学上可接受的酸加成盐。
式 I-a 和 I-b 的化合物是 NMDA(N-甲基-D-天冬氨酸)受体亚型选择性阻断剂,具有调节神经元活性和可塑性的关键功能,这使它们成为介导中枢神经系统发育过程(包括学习和记忆的形成和功能)的关键角色。