6,7,8,9- tetrahydropyrimido {1,2-a} pyrimidin- 4 -one derivatives, process for their preparation, pharmaceutical compositions comprising them and use thereof for the preparation of medicaments

摘要

The invention relates to compounds of the formula: or their racemic, enantiomeric or diastereoisomeric isomers, or pharmaceutically acceptable salts of the compounds of formula I or the racemic, enantiomeric or diasteroisomeric isomers.