Patent ID: 8404680

Claim:
A compound of formula I wherein R 1 is selected from the group consisting of i) aryl, and ii) aryl substituted by 1-4 substituents individually selected from cyano, cyano-C 1-6 -alkyl, halogen, halogen-C 1-6 -alkoxy, halogen-C 1-6 -alkyl, C 1-6 -alkoxy, C 1-6 -alkoxy-C 1-6 -alkyl, C 2-6 -alkynyl-C 1-6 -alkoxy, C 2-6 -alkynyl and C 1-6 -alkyl, R 2 is selected from the group consisting of i) hydrogen, ii) C 1-6 -alkyl, and iii) halogen; R 3 is selected from the group consisting of i) C 1-6 -alkyl, and ii) halogen-C 1-6 -alkyl; R 4 is selected from the group consisting of i) hydrogen, and ii) C 1-6 -alkyl; and R 5 is selected from the group consisting of i) hydrogen, ii) halogen-C 1-6 -alkyl, and iii) C 1-6 -alkyl; or a pharmaceutically acceptable salt thereof.