| abstract |
Compounds of formula (I) or a salt thereof are provided wherein R1, R2, R6, R7, R8, R9 and m are as defined in the description. Uses of the compounds as medicaments, and in the manufacture of medicament for treating neurological and neuropsychiatric disorders, in particular psychoses, dementia or attention deficit disorder are also disclosed. The invention further comprises pharmaceutical formulations comprising these compounds and combinations of these compounds and one or more other therapeutic agents. |