Patent ID: 8772300

Claim:
A compound of formula I wherein Y is N or C—R 3 , R 3 is hydrogen, methyl, halogen or nitrile; R 1 is selected from the group consisting of pyridinyl, optionally substituted by halogen, lower alkyl or lower alkoxy, and phenyl substituted by halogen, lower alkyl or lower alkoxy; R 2 /R 2 ′ are each independently hydrogen, lower alkyl or lower alkyl substituted by halogen, or R 2 and R 2 ′ together with the N-atom to which they are attached form a morpholine ring, a piperidine ring or an azetidine ring, each of which is unsubstituted or substituted one or more substituents selected from lower alkoxy, halogen, hydroxy and methyl; R 4 /R 4 ′ are each independently hydrogen or lower alkyl, or R 4 and R 4 ′ together form tetrahydrofuran- or an oxetane-ring; or a pharmaceutically acceptable acid addition salt, racemic mixture, corresponding enantiomer, optical isomer, or stereoisomer thereof.