[EN] DIAZEPINONE DERIVATIVES USEFUL FOR THE TREATMENT OF FRAGILE X SYNDROME, PARKINSONS OR REFLUX DISEASE [FR] DÉRIVÉS DE DIAZÉPINONE À UTILISER POUR LE TRAITEMENT DU SYNDROME DE L'X FRAGILE, DE LA MALADIE DE PARKINSON OU DE LA MALADIE DU REFLUX
The invention relates to compound of the formula I
or a salt thereof, wherein the substituents are as defined in the specification; to its preparation, to its use as medicament and to medicaments comprising it.