Patent ID: 8530472

Claim:
A compound of formula I wherein Y is N or CH; with the proviso that Y can only be CH, if at least one of U, V or W are N; U is N or C—R 4 ; V and W are independently N or CH; with the proviso that only one of U, V or W can be simultaneously nitrogen; R 4 is hydrogen, methyl or halogen; R 1 is phenyl or heteroaryl, which are optionally substituted by halogen, lower alkyl or lower alkoxy; R is hydrogen or lower alkyl; R 2 is hydrogen, lower alkyl, lower alkoxy, CF 3 or S-lower alkyl; R 3 /R 3′ are, independently from each other, hydrogen, lower alkyl or lower alkoxy; or R 3 and R 3′ form together a C 3-5 -cycloalkyl-, tetrahydrofuran- or an oxetane-ring; or a pharmaceutically acceptable acid addition salt, a racemic mixture, or its corresponding enantiomer and/or optical isomer and/or stereoisomer thereof.