A compound represented by the structural formula or a pharmaceutically acceptable salt thereof, wherein Ar1 and Ar2 are optionally substituted heteroaryl or optionally substituted phenyl; X1 is —O—, —SO0-2—, —NR12—, —NCOR12— or —NR12SO2R15;  is X2 is —O—, —S— or optionally substituted nitrogen; Y is ═O, ═S or ═NR11; Y1 is H, alkyl, —NR17R13, —SCH3, R19-aryl(CH2)n6—, R19-heteroaryl-(CH2)n6—, —(CH2)n6-heterocycloalkyl, -alkyl-NH—C(O)O-alkyl or —NHC(O)R15; R1, R2, R3 and R7 are H, alkyl, OH-alkyl, cycloalkyl, —CHF2, —CH2F or —CF3; or R1 and R2 form an alkylene ring; or R1 and R2 together are ═O; R6 is H, alkyl, —OR13 or —SR12; and the remaining variables are as defined in the specification, is disclosed, as well as a pharmaceutical compositions comprising said compound, methods of using said compound as a neurokinin antagonist, and the combination of said compounds with a selective serotonin reuptake inhibitor.