PYRROLIDINE DERIVATIVES AS NK - 3 RECEPTOR ANTAGONISTS

摘要

The present application relates to compounds of formula (I) wherein R1 is hydrogen, halogen, cyano, lower alkyl or lower alkyl substituted by halogen; n is 1, 2 or 3, if n is 2 or 3, R1 can be different; R2 is C2-7-alkyl or C3-6-cycloalkyl; R3 is the group (II) wherein X is CH or N; R5 is hydrogen, -C(O)-lower alkyl, -C(O)O-lower alkyl, S(O)2-lower alkyl, -C(O)CH2O-lower alkyl, -C(O)-CH2-CN, or is - or -C(O)-cycloalkyl, cycloalkyl, or -CH2-cycloalkyl, wherein the cycloalkyl groups are optionally substituted by lower alkyl, -CH2-O-Iower alkyl, lower alkoxy, CF3, halogen or cyano, or is -C(O)-heterocycloalkyl or heterocycloalkyl, or is -C(O)-heteroaryl or is heteroaryl or is -C(O)-aryl or aryl, which heterocycloalkyl, heteroaryl or aryl groups are optionally substituted by halogen, lower alkyl, =O, lower alkoxy, lower alkyl substituted by halogen, lower alkyl substituted by hydroxy, -C(O)-CH2-N(di-lower alkyl), C(O)NH-lower alkyl, C(O)NH2, -O-C(O)- lower alkyl, C(O)-lower alkyl, S(O)2-lower alkyl or cyano; R4 is aryl, which is optionally substituted by halogen, hydroxy, lower alkyl, lower alkyl substituted by halogen, S(O)2-lower alkyl, cyano or by lower alkoxy; 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, anxiety and attention deficit hyperactivity disorder (ADHD).