Patent ID: 8772301

Claim:
A compound of formula I: wherein: R 1 is selected from cycloalkyl, heterocycloalkyl, aryl and heteroaryl, each of which is optionally substituted; R 2 and R 3 , together with the atoms to which they are attached, form a piperidine ring which is optionally substituted; G is NR 2 ; Q is N; X is C; Z is C═O; b is a single bond; c is a single bond; d is a double bond; e is a single bond; f is a double bond; Y 1 , Y 2 and Y 3 are each independently selected from CH, C-halogen, and C-lower alkyl; and L 1 is selected from —C≡C—, —HC═CH—, -(lower alkyl)C═C(lower alkyl)-, and —CH 2 —CH 2 —, or a pharmaceutically acceptable salt thereof.