(3 -METHYLPYRROLIDIN- 3 - YL) METHYL PYRIDINYL ETHER DERIVATIVES AND THEIR USE AS NK-3 RECEPTOR ANTAGONISTS.

摘要

The invention relates to a compound of general formula : (I) wherein A is selected from the groups (a), (b) or (c): formula (II) or formula (III) (b) or is cycloalkyl, (c) optionally substituted by lower alkyl (c);Ar¹ is phenyl or a six membered heteroaryl;X¹ is N or CH; X² is N-R¹ or O; R¹ is S(O)₂-lower alkyl, C(O)-cycloalkyl substituted by lower alkyl, or is C(O)-lower alkyl, lower alkyl, cyano, cycloalkyl or is a six membered heteroaryl substituted by lower alkyl, cyano, C(O)-lower alkyl, halogen, lower alkyl substituted by halogen or lower alkoxy; or is phenyl substituted by cyano or halogen; R² is lower alkyl, halogen, pyrazolyl, 3-methyl-[1,2,4]oxazolyl, 5-methyl-[1,2,4]oxadiazol-3-yl, pyridyl substituted by cyano, or is phenyl substituted by halogen, or is cyano, lower alkoxy, or is piperidin-2-one; or to pharmaceutically active salts, sterioisomeric forms, including individual diastereoisomers and enantiomers of the compound of formula I as well as racemic and non-racemic mixtures thereof..It has been found that the present compounds are high potential NK-3 receptor antagonists for the treatment of depression, pain, psychosis, Parkinsons disease, schizophrenia, anxiety and attention deficit hyperactivity disorder (ADHD).