Patent ID: 7781441

Claim:
A compound of formula I wherein R 1 is hydrogen, lower alkyl, lower alkoxy, halogen or lower alkyl substituted by halogen; R is hydrogen or halogen; or R 1 and R are together with the carbon atoms to which they are attached —CH═CH—CH═CH—; R 2 is hydrogen, lower alkyl, phenyl optionally substituted by halogen, or hetaryl optionally substituted by lower alkyl; R 3 is hydrogen, lower alkyl, phenyl, benzyl, lower alkenyl, lower alkoxy, phenyloxy, benzyloxy, S-lower alkyl, halogen, CN, lower alkyl substituted by halogen or O-lower alkyl substituted by halogen; R 4 is hydrogen or lower alkyl; aryl is phenyl or naphthyl; n is 1, 2 or 3; and m is 1 or 2; or a pharmaceutically acceptable acid addition salt or tautomeric form thereof.