Patent ID: 8431568

Claim:
A compound of formula I where: R 1 is CO 2 R 5 or CONR 6 R 7 ; R 2 is hydrogen or alkyl; R 3 is hydrogen, halo, alkyl, alkenyl, hydroxy, benzyloxy, or alkoxy; R 4 is cycloalkyl; R 5 is hydrogen or alkyl; R 6 is hydrogen, alkyl, alkylSO 2 , cycloalkylSO 2 , haloalkylSO 2 , (R 8 )(R 9 )NSO 2 , or (R 10 )SO 2 ; R 7 is hydrogen or alkyl; R 8 is hydrogen or alkyl; R 9 is hydrogen or alkyl; R 19 is azetidinyl, pyrrolidinyl, piperidinyl, piperazinyl, N-(alkyl)piperazinyl, morpholinyl, thiomorpholinyl, homopiperidinyl, or homomorpholinyl; R 11 is hydrogen or alkyl; and X is N or CR 11 or a pharmaceutically acceptable salt thereof.