Patent ID: 7553868

Claim:
A compound of formula (I) in which: R 1 represents H or CH 3 ; R 2 represents H, halogen, cyano, C1 to 2 alkyl, trifluoromethyl or Cl to 2 alkoxy; n represents an integer 1, 2 or 3; m represents an integer 0, 1, 2 or 3; R 3 represents H, C2 to 4 alkenyl or C1 to 4 alkyl; said alkyl group being optionally further substituted by CN, C1 to 4 alkoxy, C1 to 4 alkyl-SO 2 -or one or more fluoro atoms; R 4 and R 5 independently represent H or C1 to 2 alkyl; and each R 4 , each R 5 and each group CR 4 R 5 is selected independently; Ar represents a phenyl; said phenyl ring being optionally substituted by one or more substituents selected independently from halogen, cyano, C1 to 2 alkyl, trifluoromethyl, C1 to 2 alkoxy, NR 6 R 7 , —CONR 6 R 7 , —COOR 6 , —NR 6 COR 7 , —S(O) p R 6 , —SO 2 NR 6 R 7 and —NR 6 SO 2 R 7 ; R 6 and R 7 independently represent H, C2 to 4 alkenyl or C1 to 4 alkyl; said alkyl or alkenyl groups being optionally further substituted by one or more halogen atoms; p represents an integer 0, 1 or 2; and pharmaceutically acceptable salts thereof.