PYRROLIDINE DERIVATIVES AS NK3 RECEPTOR ANTAGONISTS.

摘要

The present invention relates to a compounds of formula I wherein A is -NR'-, -S-, -S(O)- or -S(O)2-; R' is hydrogen or lower alkyl; Ar is aryl or is a five or six membered heteroaryl group, containing one or two N-atoms; R is a five or six membered heterocyclic group X1 is N or CH; and X2 is -N(R1)-, -CH2-, -O-, -S-, -S(O)-, or -S(O)2-, R1 is hydrogen, lower alkyl, S(O)2-lower alkyl, C(O)-lower alkyl, C(O)-cycloalkyl optionally substituted by lower alkyl; with the proviso that at least one of X1 or X2 contains a heteroatom, or is a five or six membered heteroaryl group, containing one or two N-atoms, which groups are unsubstituted or may be substituted by one or two R1; wherein R1 is lower alkyl or cyano; R2 is lower alkyl substituted by halogen, halogen, cyano or nitro; R3 is halogen; R4 is hydrogen or lower alkyl; o is 1 or 2; in case o is 2, R2 may be the same or different; p is 1 or 2; in case p is 2, R3 may be the same or different; or to a pharmaceutically active salt thereof. It has been found that the present compounds are high potential NK-3 receptor antagonists for the treatment of depression, pain, psychosis, Parkinson's disease, schizophrenia, bipolar disorders, anxiety and attention deficit hyperactivity disorder (ADHD).