Patent ID: 8501940

Claim:
A compound of formula (I): wherein: A is CR a R b or —CH 2 —CH 2 —; R 1 is hydrogen or alkyl; R 2 is hydrogen or alkyl; R 3 is alkyl, cycloalkyl, cycloalkyl-alkyl, aryl, substituted aryl, 1H-pyrazolyl or substituted 1H-pyrazolyl, wherein substituted aryl is aryl substituted with one to three substituents independently selected from alkyl, halogen and haloalkyl, and wherein substituted 1H-pyrazolyl is 1H-pyrazolyl substituted with one to three substituents independently selected from alkyl and aryl; R a is hydrogen or methyl; R b is hydrogen or methyl; or R a and R b together with the carbon atom to which they are attached form cyclopropyl, cyclobutyl or cyclopentyl; with the proviso that in case R a and R b are both hydrogen or both methyl at the same time, then R 3 is (1-methylcyclopropyl)methyl; or a pharmaceutically acceptable salt thereof.