Patent ID: 8754095

Claim:
A compound of formula (I): wherein n is 0 or 1; m is 1; p is 1; X is O or HH; Ar is phenyl or naphthyl; R 1 is H or CH 3 ; R 2 is H, halogen, (C 1 -C 4 )alkyl, (C 1 -C 4 )alkoxy, CF 3 or OCF 3 ; and R 3 and R 4 are the same or different and independently of each other selected from the group consisting of hydrogen, tetrahydropyranyl, and unsubstituted or substituted piperidine, wherein the substituents are selected from the group consisting of (C 1 -C 6 )alkoxycarbonyl and (C 3 -C 6 )cycloalkyl(C 1 -C 4 )alkyl; or R 3 and R 4 taken together with the nitrogen atom to which they are attached form piperidine, which is optionally substituted with (C 1 -C 4 )alkyl-NH—CO; or a salt thereof or an enantiomer or a diastereomer thereof.