Patent ID: 7309718

Claim:
A dibenzocycloheptene compound represented by the formula (I): wherein R 1 represents a hydrogen atom, a halogen atom, a hydroxy group, a nitro group, a cyano group, a carbamoyl group, a formyl group, a carboxyl group, 1H-tetrazol-5-yl group, C 1 -C 4 alkyl group, fluoro C 1 -C 4 alkyl group, hydroxy C 1 -C 4 alkyl group, C 2 -C 4 alkenyl group, C 2 -C 4 alkynyl group, C 1 -C 4 alkoxy group, fluoro C 1 -C 4 alkoxy group, C 1 -C 4 alkylthio group, C 1 -C 4 alkylsulfinyl group or C 1 -C 4 alkylsulfonyl group, R 2 represents a hydrogen atom, a halogen atom, a nitro group, a cyano group, C 1 -C 4 alkyl group or C 1 -C 4 alkoxy group, A represents a 5-membered or 6-membered heteroaromatic ring group having 1 to 3 hetero atom(s) selected from the group consisting of a nitrogen atom, an oxygen atom and a sulfur atom or a heteroaromatic ring-fused group in which the heteroaromatic ring group and a benzene ring are fused, and the heteroaromatic ring group or fused heteroaromatic ring group may have a halogen atom, a nitro group, a cyano group, C 1 -C 4 alkyl group, fluoro C 1 -C 4 alkyl group, C 1 -C 4 alkoxy group, fluoro C 1 -C 4 alkoxy group, C 1 -C 4 alkylthio group or C 3 -C 4 alkylene group as a substituent(s), B represents a formula: —CH═CH—, X represents a sulfur atom, Y represents a C 1 -C 10 alkylene group which may have a halogen atom, C 1 -C 4 alkyl group or C 1 -C 4 alkoxy group as a substituent(s), or a group (a) of the formula: where o and p are each an integer of 0 to 2, and q is an integer of 1 to 4, Z represents a carboxyl group which may be protected; 1H-tetrazol-5-yl group; a formula: —NH—SO 2 —R 3 ; or a formula: —CO—NH—SO 2 —R 3 where R 3 represents a C 1 -C 4 alkyl group, a fluoro-C 1 -C 4 alkyl group or a phenyl group which may have a halogen atom, a C 1 -C 4 alkyl group, a fluoro-C 1 -C 4 alkyl group, a C 1 -C 4 alkoxy group, a fluoro-C 1 -C 4 alkoxy group, a nitro group or a cyano group as a substituent(s), m is an integer of 1 to 4, when m is 2 or more, a plural number of R 1 may be different from each other, n is an integer of 1 to 3, and when n is 2 or more, a plural number of R 2 may be different from each other, represents a single bond or a double bond, or a pharmaceutically acceptable salt thereof.