Patent ID: 7189850

Claim:
A compound of formula wherein A-A is —CH 2 —CH 2 —, —CH 2 —CH 2 —CH 2 —, —CH 2 —O— or —O—CH 2 —; X is hydrogen or hydroxy; R 1 is aryl or heteroaryl, each of which is unsubstituted or substituted by one or more substituents selected from the group consisting of lower alkyl, lower alkoxy, halogen and trifluoromethyl; R 2 is aryl or heteroaryl, each of which is unsubstituted or substituted by one or more substituents selected from the group consisting of lower alkyl, lower alkoxy, halogen and trifluoromethyl, or is lower alkyl, —(CH 2 ) n -cycloalkyl, —(CH 2 ) n —CF 3 , —(CH 2 ) p —O-lower alkyl, —(CH 2 ) y -phenyl, optionally substituted by halogen, lower alkyl, lower alkoxy or trifluoromethyl, or is —(CH 2 ) p —NR′R″, wherein R′ and R″ form together with the N-atom to which they are attached a heterocyclic ring, selected from the group consisting of piperidine, morpholine, thiomorpholine and 1,1-dioxo-thiomorpholine; R 3 , R 4 are each independently hydrogen, lower alkyl, phenyl or benzyl; R 5 is hydrogen, lower alkyl or benzyl; R 6 is hydrogen or lower alkyl; n is 0, 1 or 2; p is 2 or 3; and y is 1 or 2; or a pharmaceutically acceptable acid addition salt thereof.