5H,10H-IMIDAZO1,2-AINDENO1,2-EPYRAZIN-4-ONE DERIVATIVES, INTERMEDIATES,PREPARATION AND USE THEREOF, AND DRUGS CONTAINING SAID DERIVATIVES

摘要

A compound of formula (II): in which R is a hydrogen atom or a carboxy, alkoxycarbonyl, -CO-NR4R5, -PO3H2 or -CH2OH radical, and R1 is an -alk-NH2, -alk-NH-CO-R3, -alk-COOR4, -alk-CO-NR5R6 or -CO-NH-R7 radical. The compounds of formula (II) can be used to prepare compounds of formula (I): in which R and R1 have the same meanings as above. The compounds of formula (I) have valuable pharmacological properties and are antagonists of the alpha -amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor, also known as the quisqualate receptor. The compounds of formula (I) are also non-competitive antagonists of the N-methyl-D-aspartate (NMDA) receptor and more specifically are ligands for NMDA receptor glycine modulator sites.