Patent ID: 7834028

Claim:
A compound of the general formula Ia with the chirality as depicted below wherein Y represents —CH 2 —CH2 2 -; R 1 represents 1,3-benzodioxole or an optionally substituted phenyl group, wherein the phenyl group can be mono-, di-, or tri-substituted, and the substituents are independently selected from the group consisting of (C 1-4 )alkyl, halogen and trifluoromethyl; R 2 represents (C 1-4 )alkyl; R 3 represents (C 1-4 )alkyl; R 4 represents a phenyl group, wherein the phenyl group is unsubstituted or independently mono-, di-, or trisubstituted wherein the substituents are independently selected from the group consisting of (C 1-4 )alkyl and halogen; R 5 represents (C 1-4 )alkyl; in free base form or pharmaceutically acceptable salt form.