A compound represented by the following general formula: or a pharmacologically acceptable salt thereof, wherein R 1 represents a group represented by -Q 1, -Q 1 -X-Q 2, or -Q 1 -X-Q 2 -Y-Q 3; Q 1 represents a monocyclic or bicyclic aromatic heterocyclic group which may have 1 or 2 substituents independently selected from substituent group α; substituent group α represents the group consisting of a halogen atom, a C 1 -C 6 alkyl group, a halo C 1 -C 6 alkyl group, a C 1 -C 6 alkoxy group, a C 3 -C 7 cycloalkyl group, and a 4- to 7-membered heterocycloalkyl group; Q 2 represents an aromatic hydrocarbon ring group which may have 1 or 2 substituents independently selected from substituent group β, or a monocyclic aromatic heterocyclic group which may have 1 or 2 substituents independently selected from substituent group β; substituent group β represents the group consisting of a halogen atom, a C 1 -C 6 alkyl group, a halo C 1 -C 6 alkyl group, a C 1 -C 6 alkoxy group, a C 3 -C 7 cycloalkyl group, and a cyano group; Q 3 represents an aromatic hydrocarbon ring group which may have 1 or 2 substituents independently selected from substituent group γ, or a monocyclic aromatic heterocyclic group which may have 1 or 2 substituents independently selected from substituent group γ; substituent group γ represents the group consisting of a halogen atom, a C 1 -C 6 alkyl group, a halo C 1 -C 6 alkyl group, a C 1 -C 6 alkoxy group, a C 3 -C 7 cycloalkyl group, and a cyano group; X represents a single bond, -(CH 2) n -, -CH=CH-, -CONH-, -NHCO-, -CONHCH 2 -, -NHCOCH 2 -, -CH 2 NHCO-, -CH 2 CONH-, -SO 2 NH-, -CH 2 OCH 2 -, or -NHCH 2 CH 2 -; Y represents a single bond, -O-, -(CH 2) n -, or -O-(CH 2) n -; m and n each independently represents an integer from 1 to 3; R 2 represents a hydrogen atom or a C 1 -C 6 alkyl group; and R 3 represents a hydrogen atom, a C 1 -C 6 alkoxycarbonyl group, a carboxy group, an aromatic hydrocarbon ring group, or a monocyclic aromatic heterocyclic group, with the proviso that, when m is 1 and R 2 and R 3 are both H, then R 1 is not a pyrid-2-yl, 6-chloropyridazin-3-yl or 6-phenylpyridazin-3-yl group. R 1 represents a group represented by -Q 1, -Q 1 -X-Q 2, or -Q 1 -X-Q 2 -Y-Q 3; Q 1 represents a monocyclic or bicyclic aromatic heterocyclic group which may have 1 or 2 substituents independently selected from substituent group α; substituent group α represents the group consisting of a halogen atom, a C 1 -C 6 alkyl group, a halo C 1 -C 6 alkyl group, a C 1 -C 6 alkoxy group, a C 3 -C 7 cycloalkyl group, and a 4- to 7-membered heterocycloalkyl group; Q 2 represents an aromatic hydrocarbon ring group which may have 1 or 2 substituents independently selected from substituent group β, or a monocyclic aromatic heterocyclic group which may have 1 or 2 substituents independently selected from substituent group β; substituent group β represents the group consisting of a halogen atom, a C 1 -C 6 alkyl group, a halo C 1 -C 6 alkyl group, a C 1 -C 6 alkoxy group, a C 3 -C 7 cycloalkyl group, and a cyano group; Q 3 represents an aromatic hydrocarbon ring group which may have 1 or 2 substituents independently selected from substituent group γ, or a monocyclic aromatic heterocyclic group which may have 1 or 2 substituents independently selected from substituent group γ; substituent group γ represents the group consisting of a halogen atom, a C 1 -C 6 alkyl group, a halo C 1 -C 6 alkyl group, a C 1 -C 6 alkoxy group, a C 3 -C 7 cycloalkyl group, and a cyano group; X represents a single bond, -(CH 2) n -, -CH=CH-, -CONH-, -NHCO-, -CONHCH 2 -, -NHCOCH 2 -, -CH 2 NHCO-, -CH 2 CONH-, -SO 2 NH-, -CH 2 OCH 2 -, or -NHCH 2 CH 2 -; Y represents a single bond, -O-, -(CH 2) n -, or -O-(CH 2) n -; m and n each independently represents an integer from 1 to 3; R 2 represents a hydrogen atom or a C 1 -C 6 alkyl group; and R 3 represents a hydrogen atom, a C 1 -C 6 alkoxycarbonyl group, a carboxy group, an aromatic hydrocarbon ring group, or a monocyclic aromatic heterocyclic group, with the proviso that, when m is 1 and R 2 and R 3 are both H, then R 1 is not a pyrid-2-yl, 6-chloropyridazin-3-yl or 6-phenylpyridazin-3-yl group.