5H-INDENO[1,2-b]PYRAZINE-2,3-DIONE DERIVATIVES, PREPARATION THEREOF AND DRUGS CONTAINING SAME

摘要

PCT No. PCT/FR95/00359 Sec. 371 Date Sep. 27, 1996 Sec. 102(e) Date Sep. 27, 1996 PCT Filed Mar. 23, 1995 PCT Pub. No. WO95/26342 PCT Pub. Date Oct. 5, 1995Compounds of formula (I): wherein R represents a CR4R5, CHR6, or C=R7 radical and R3 represents an oxygen atom, salts thereof, the preparation thereof and drugs containing same. The compounds of formula (I) have valuable pharmacological properties and are alpha-amino-3-hydroxy-5-methyl-4-osoxaziepropionic acid (AMPA) receptor antagonists, said receptor also being known as the quisqualate receptor. Furthermore, the compounds of formula (I) are non-competitive N-methyl-D-aspartate (NMDA) receptor antagonists, and particularly NMDA receptor glycine modulation site ligands.