The present invention relates to a compound of formula I
wherein R
1
, R
2
, and Ar are as defined herein or to a pharmaceutically acceptable acid addition salt, to a racemic mixture, or to its corresponding enantiomer and/or optical isomer thereof. These compounds and their pharmaceutical compositions are useful in the treatment of neurological and neuropsychiatric disorders.
The present invention relates to the use of a compound of formula I
wherein R
1
, R
2
, R
3
, R
4
, X and n are as defined herein
or to a pharmaceutically acceptable acid addition salt, to a racemic mixture, or to its corresponding enantiomers and/or optical isomers for the treatment of psychoses, pain, dysfunction in memory and learning, attention deficit, schizophrenia, dementia disorders or Alzheimer's disease.
The present invention relates to the use of a compound of formula I
wherein R1, R2, R3, R4, X and n are as defined herein
or to a pharmaceutically acceptable acid addition salt, to a racemic mixture, or to its corresponding enantiomers and/or optical isomers for the treatment of psychoses, pain, dysfunction in memory and learning, attention deficit, schizophrenia, dementia disorders or Alzheimer's disease.
The present invention relates to a compound of formula I
wherein R1, R2, and Ar are as defined herein or to a pharmaceutically acceptable acid addition salt, to a racemic mixture, or to its corresponding enantiomer and/or optical isomer thereof. These compounds and their pharmaceutical compositions are useful in the treatment of neurological and neuropsychiatric disorders.