Patent ID: 8779148

Claim:
A compound of the formula: or a pharmaceutically acceptable salt thereof, in which: R 1 is represented by C 1 -C 3 alkyl; R 2 is represented by hydrogen or C 1 -C 3 alkyl; R 3 is represented by hydrogen, halogen, hydroxy, cyano, C 1 -C 3 alkyl, C 1 -C 3 alkoxy, trifluoromethyl or trifluoromethoxy; T is represented by ethynyl, optionally substituted (C 6 -C 10 )aryl or optionally substituted heteroaryl; D is absent, or is represented by —(CH 2 ) r —, —(CH 2 ) n —O—(CH 2 ) p —, or a bond; r is represented by the integer 1, 2, or 3; n and p are each independently represented by the integer 0, 1, or 2; E is absent, or is represented by a substituent selected from the group consisting of: i) (C 3 -C 10 )cycloalkyl, optionally substituted; ii) (C 6 -C 10 )aryl optionally substituted; iii) heteroaryl, optionally substituted; and iv) heterocyclic, optionally substituted; with the proviso that: 1) if E is absent, then D is also absent; 2) T is not represented by unsubstituted phenyl; when E and D both are absent, R 3 is hydrogen and R 1 and R 2 are each methyl.