Patent ID: 7964627

Claim:
A compound of formula (I) or a pharmaceutically acceptable salt thereof, wherein R 1 represents hydrogen, hydroxyl, halogen, (C 1 -C 3 )alkyl, halo(C 1 -C 3 )alkyl, (C 1 -C 3 )alkoxy, halo(C 1 -C 3 )alkoxy, cyclo(C 3 -C 6 )alkyl or cyclo(C 3 -C 6 )alkoxy; R 2 represents hydrogen, halogen, (C 1 -C 3 )alkyl, halo(C 1 -C 3 )alkyl, (C 1 -C 3 )alkoxy or halo(C 1 -C 3 )alkoxy, cyclo(C 3 -C 6 )alkyl or cyclo(C 3 -C 6 )alkoxy; R represents hydrogen or (C 1 -C 3 ) alkyl or (C 3 -C 6 ) cycloalkyl; “n” represents 0 to 4; “p” represents 0 to 6; “q” represents 0 to 4.