Patent ID: 7087612

Claim:
A compound of formula I wherein R 1 is —(CH 2 ) n —CO—NR 5 R 6 ; —(CH 2 ) n —COOR 7 ; —(CH 2 ) n —CN; —(CH 2 ) n —OR 8 ; or phenyl, which is unsubstituted or substituted by one to three substituents selected from halogen and fluoro(C 1 –C 6 )-alkyl; R 2 is hydrogen, halogen or C 1 –C 6 -alkyl; R 3 is hydrogen, C 1 –C 6 -alkyl, C 3 –C 6 -cycloalkyl or benzyl; R 4 is halogen, fluoro(C 1 –C 6 )-alkyl, cyano, C 1 –C 6 -alkoxy or fluoro(C 1 –C 6 )-alkoxy; R 5 and R 6 are independently from each other hydrogen or C 1 –C 6 -alkyl; R 7 is hydrogen or C 1 –C 6 -alkyl; R 8 is hydrogen or C 1 –C 6 -alkyl; m is 1, 2 or 3; and n is 0, 1 or 2; or a pharmaceutically acceptable salt thereof.