The present invention relates to a compound of formula (I) : wherein Ris cycloalkyl or is phenyl unsubstituted or substituted by one or two halogenatoms R is hydrogen or halogen R is hydrogen, CN, loweralkoxy, lower alkyl or halogen n is 0, 1 or 2 or to a pharmaceutically suitableacid addition salt thereof. It has been found that the present compounds are highpotential NK-3 receptor antagonists for the treatment of depression, pain,psychosis, Parkinsons disease, schizophrenia, anxiety and attentiondeficit hyperactivity disorder (ADHD).
