| abstract |
This invention relates to compounds of formula I n n n n n n n n n n their use as positive allosteric modulators of mGlu5 receptor activity, pharmaceutical compositions containing the same, and methods of using the same as agents for treatment and/or prevention of neurological and psychiatric disorders associated with glutamate dysfunction such as schizophrenia or cognitive decline such as dementia or cognitive impairment. R 1 , R 2 , R 3 , R 4 , Q have meanings given in the description. |