Patent ID: 8372865

Claim:
A compound of formula I: or pharmaceutically acceptable salts thereof, wherein: m is 0 or 1; n is 0 or 1; R 1 is: quinolinol; isoquinolinyl; dihydroquinolinyl; or tetrahydroquinolinyl; each optionally substituted one, two or three times with a group or groups independently selected from: oxo; halo, C 1-6 alkyl; halo-C 1-6 alkyl; hydroxy-C 1-6 alkyl; or C 1-6 -alkoxy-C 1-6 alkyl; R 2 is: optionally substituted aryl; optionally substituted heteroaryl; C 3-6 cycloalkyl; or C 1-6 alkyl; R 3 is: hydrogen; C 1-6 alkyl; alkylcarbonylalkyl; or alkoxycarbonylalkyl; R 4 and R 5 each independently is: hydrogen; or C 1-6 alkyl; and R a is: hydrogen; C 1-6 alkyl; hydroxy-C 1-6 alkyl; C 1-6 alkoxy-C 1-6 alkyl.