Patent ID: 7576088

Claim:
A compound of the formula: or a pharmaceuticall acceptable salt thereof, wherein: R 1 and R 2 are independently unsubstituted phenyl, or phenyl which is mono-, di- or tri-substituted, independently, by hydroxy, lower alkyl, lower alkoxy, perfluoro-lower alkyl, perfluoro-lower alkoxy, alkanoyl, cyano, nitro or halogen; or R 1 and R 2 together with the carbon atom to which they are attached form a 10′,11′-dihydro-2,5′-[5H]dibenzo-[a,d]cycloheptene residue; R 3 and R 4 are independently hydrogen, halogen, hydroxy, lower alkyl, lower alkoxy, perfluoro-lower alkyl, alkanoyl or cyano; R 5 and R 6 together with the nitrogen atom to which they are attached form a heterocyclic ring which is peperazinyl, azepanyl, diazepanyl, or thiomorpholino, which is optionally mono-, di- or tri-substituted, independently, by lower alkyl, lower alkoxycarbonyl, hydroxy lower alkyl, lower alkoxy-lower alkyl, di-lower alkylcarbamoyl, carbamoyl, lower alkylcarbonyl amino, oxo, dioxo, alkanoyl, amino lower alkyl, hydroxy, lower alkoxy, halogen, perfluoro-lower alkyl, cyano, pyridinyl or pyrazinyl, or by phenyl or phenyl lower alkyl, wherein the phenyl moiety may optionally be mono-, di- or tri-substituted, independently, by lower alkyl, lower alkoxy, halogen, perfluoro-lower alkyl, hydroxy, alkanoyl or cyano; R 7 is hydrogen, halogen, lower alkyl or cyano; and X is a single bond, —CH 2 —, —C(O)—, —SO 2 — or —SO 2 NH—.