Patent ID: 7875645

Claim:
A compound of formula I wherein R is cycloalkyl, lower alkoxy substituted by halogen, O-phenyl, each of which is optionally substituted by halogen, benzyl, NHC(O)-lower alkyl or pyridin-2,3 or 4-yl; R 1 is hydrogen, hydroxy or lower alkyl; R 2 is hydrogen; A is an aryl group, selected from the group consisting of phenyl, a heteroaryl group, containing at least one O, N or S ring atom, selected from the group consisting of pyridine-3-yl, pyrazolyl, benzo[b]thiophen-3-yl and indol-3-yl; and n is 1, 2, 3, 4 or 5; when n is 2, 3, 4 or 5, R may be the same or different; the dotted line represents an optional bond; or a pharmaceutically active salt thereof.