Patent ID: 7501406

Claim:
A compound of formula wherein R 1 is lower alkyl substituted by halogen, or is aryl or heteroaryl, each of which is unsubstituted or substituted by halogen; R 2 is heterocycloalkyl, aryl or heteroaryl, each of which is unsubstituted or substituted by one or more substituents, selected from the group consisting of halogen, lower alkyloxy, lower alkyl substituted by halogen, O-lower alkyl substituted by halogen C(O)—NR″ 2 , (CR 2 ) m —C(O)—R′, heteroaryl and S(O) 2 -lower alkyl; R 3 /R 3′ , R 4 /R 4′ and R 5 /R 5′ are each independently hydrogen or fluoro, wherein at least one of R 4 /R 4′ or R 5 /R 5′ is always fluoro; R′ is aryl or hydroxy; R″ is hydrogen, cycloalkyl or heterocycloalkyl; R is hydrogen or lower alkyl; and m is 0, 1, 2 or 3; or a pharmaceutically acceptable acid addition salt, optically pure enantiomer, racemate or diastereomeric mixture thereof.