Patent ID: 7256204

Claim:
A compound of the formula: wherein Ar represents an aromatic ring assembly group which may be substituted or a fused aromatic group which may be substituted; X represents (i) a bond, (ii) —S—, —SO— or —SO 2 —, (iii) a C 1-6 alkylene, C 2-6 alkenylene or C 2-6 alkynylene group, each of which may be substituted by 1 to 3 substituents selected from the group consisting of oxo and C 1-6 alkyl, (iv) —CO—O— or (v) a group of the formula: —(CH 2 )p-X 1 —(CH 2 )q-, —(CH 2 )r-CO—X 1 —, —SO 2 —NR 8 — or —(CH 2 )r-SO 2 —NR 8 — wherein X 1 represents O or NR 8 , R 8 represents a hydrogen atom, a hydrocarbon group which may be substituted or an acyl, p represents an integer of 0 to 5, q represents an integer of 1 to 5, p+q is an integer of 1 to 5, and r represents an integer of 1 to 4; Y represents —CH 2 —CH 2 — or —CH 2 —, which may be substituted; R 1 and R 2 each represents C 1-2 alkyl which may be substituted Ring A represents a benzene ring which may be further substituted apart from the group of the formula: —X—Ar wherein each symbol is as defined above; and Ring B represents a cyclohexane ring which may be further substituted apart from the group of the formula: —Y—NR 1 R 2 wherein each symbol is as defined above; or a salt thereof.