The present invention is concerned with 2-oxo-2,3-dihydro-indoles of general formulawhereinAr is a 6-membered heteroaryl group, containing one or two N-atoms, which are the groups, pyridinyl, pyrimidinyl, pyridazinyl, or a 5-membered heteroaryl group containing from 1 to 3 heteroatoms, selected from N, S or O, which groups are imidazolyl, 1,2,4-oxadiazolyl, 1,3,4-oxadazolyl, isoxazolyl, oxazolyl, 1,3,4-thiadiazolyl or pyrazolyl;R1 is
hydrogen, lower
alkyl,
halogen, amino, dimethylamino, cyano, lower
alkyl substituted by
halogen, lower
alkyl substituted by hydroxy, CH(OH)CF3, (CH2)o-lower alkoxy, cycloalkyl optionally substituted by CF3, or heterocycloalkyl optionally substituted by lower alkyl;R2 is
hydrogen, lower alkyl, (CH2)o-cycloalkyl, (CH2)o—O-cycloalkyl, (CH2)o-lower alkoxy, CH2)o-lower alkoxy substituted by
halogen, (CH2)o-heterocycloalkyl optionally substituted by lower alkyl, (CH2)o—S(O)2-cycloalkyl, lower alkyl substituted by one or two hydroxy, lower alkyl substituted by one or two lower alkoxy, (CH2)o—S(O)2-lower alkyl, lower alkyl substituted by halogen or CH2CH(OH)CF3;R3 is halogen or lower alkyl;X is CH or N;X1 is CH or N;n is 1 or 2;is 0, 1, 2 or 3;m is 0, 1 or 2;and the dotted line indicates a bond may or may not be present; or,a pharmaceutically acceptable salts thereof, with a
racemic mixture, or with its corresponding
enantiomer and / or optical isomer and / or stereoisomer thereofThe compounds may be used for the treatment of certain
central nervous system disorders which are positive (
psychosis) and negative symptoms of
schizophrenia,
substance abuse,
alcohol and
drug addiction, obsessive-
compulsive disorders,
cognitive impairment, bipolar disorders,
mood disorders, major depression,
treatment resistant depression,
anxiety disorders, Alzheimer's
disease,
autism, Parkinson's
disease,
chronic pain, borderline personality disorder, sleep disturbances,
chronic fatigue syndrome, stiffness, antiinflammatory effects in
arthritis and
balance problems.