Patent ID: 7638517

Claim:
A compound of formula I: or a pharmaceutically acceptable salt thereof, wherein: p is 1 or 2; Ar is: pyrrolo[2,3-b]pyridinyl selected from pyrrolo[2,3-b]pyridin-1-yl, pyrrolo[2,3-b]pyridin-2-yl, and pyrrolo[2,3-b]pyridin-3-yl, each optionally substituted; R 1 is: (a) aryl selected from phenyl and naphthyl, each optionally substituted; or (b) heteroaryl selected from indolyl, pyridinyl, thienyl, furanyl, pyrimidinyl, pyridazinyl, pyrazinyl, oxazolyl, thiazolyl, isoxazolyl, isothiazolyl, imidazolyl, pyrazolyl, quinolinyl and isoquinolinyl, each optionally substituted; (c) optionally substituted arylalkyl; (d) optionally substituted heteroarylalkyl; (e) cycloalkyl; (f) cycloalkylmethyl; or (g) branched alkyl; R 2 is: (a) hydrogen; (b) alkyl; (c) hydroxyalkyl; (d) alkoxyalkyl; (e) benzyl; or or R 2 is a bond that connects the nitrogen atom to one of the ring carbon atoms of Ar; R 3 is: (a) hydrogen; (b) alkyl; (c) hydroxyalkyl; (d) alkoxyalkyl; (e) benzyl; or (f) R 2 and R 3 together with the nitrogen to which they are attached may form an optionally substituted four to seven membered ring that optionally includes an additional heteroatom selected from N, O and S; R a is: hydrogen; R b is: hydrogen; R c and R d each is: hydrogen; and R e is hydrogen or alkyl.