Patent ID: 7572826

Claim:
A compound of formula (I) wherein R 1 represents H or CH 3 ; R 2 represents hydrogen, halogen, cyano, C1 to 2 alkyl, trifluoromethyl or C1 to 2 alkoxy; R 3 and R 4 independently represent H or CH 3 ; A represents phenyl; and the group —CR 3 R 4 —X—R 5 is bonded to ring A in the 4-position relative to the thiophene ring; X represents NR 6 ; R 5 represents H, C1 to 6 alkyl, C2 to 6 alkenyl or C3 to 6 cycloalkyl; said alkyl group being optionally further substituted by one or more groups selected independently from CN, OH, C1 to 4 alkoxy, F, a C5 to 10 monocyclic or bicyclic aromatic ring system and said ring system being optionally further substituted by one or more substituents selected independently from halogen, C1 to 2 alkyl, C1 to 2 alkoxy or CF 3 ; or said alkyl being optionally further substituted by a C5 to 6 cycloalkyl ring that optionally incorporates a carbonyl group and is optionally further substituted by OH; R 6 represents H or C1 to 6 alkyl; said alkyl group being optionally further substituted by CN, OH, C1 to 4 alkoxy or one or more fluoro atoms; n and m independently represent an integer 0, 1 or 2; R 7 and R 8 independently represent H or C1 to 2 alkyl; and pharmaceutically acceptable salts thereof.