Substituted Pyridine Compound

A compound of general formula (I):

• or a pharmacologically acceptable salt thereof, wherein
• R1 represents a hydrogen atom, a C1-C6 alkyl group, a hydroxy(C1-C6 alkyl) group, a (C1-C6 alkoxy)-(C1-C6 alkyl) group, a hydroxy(C1-C6 alkoxy)-(C1-C6 alkyl) group, a (C1-C6 alkyl)amino-(C1-C6 alkyl) group, a hydroxy(C1-C6 alkyl)amino-(C1-C6 alkyl) group, a [N—(C1-C6 alkyl)-N-hydroxy(C1-C6 alkyl)amino]-(C1-C6 alkyl) group, a (C1-C6 alkyl)sulfonylamino-(C1-C6 alkyl) group, a [N—(C1-C6 alkyl)-N—(C1-C6 alkyl)sulfonylamino]-(C1-C6 alkyl) group, a carboxy(C1-C6 alkyl) group, a halogeno(C1-C6 alkyl) group, a (C3-C8 cycloalkyl)-(C1-C6 alkyl) group, a C2-C6 alkenyl group, a C2-C6 alkynyl group, a C3-C8 cycloalkyl group, a C3-C8 cycloalkenyl group, a hydroxy group, a C1-C6 alkoxy group, a hydroxy(C1-C6 alkoxy) group, a (C1-C6 alkoxy)-(C1-C6 alkoxy) group, a (C1-C6 alkyl)sulfonyl-(C1-C6 alkoxy) group, a carboxy(C1-C6 alkoxy) group, a halogeno(C1-C6 alkoxy) group, a C1-C6 alkylthio group, a C1-C6 alkylsulfinyl group, a C1-C6 alkylsulfonyl group, an amino group, a C1-C6 alkylamino group, a di(C1-C6 alkyl)amino group, a hydroxy(C1-C6 alkyl)amino group, a N—(C1-C6 alkyl)-N-hydroxy(C1-C6 alkyl)amino group, a formylamino group, a (C1-C6 alkyl)carbonylamino group, a carboxy group, a (C1-C6 alkoxy)carbonyl group, a carbamoyl group, a (C1-C6 alkylamino)carbonyl group, a di(C1-C6 alkyl)aminocarbonyl group, a cyano group, a halogeno group, a phenyl group, a substituted phenyl group in which the substituent(s) represent 1 to 4 groups independently selected from Substituent Group α, a 5- or 6-membered aromatic heterocyclyl group, a substituted 5- or 6-membered aromatic heterocyclyl group in which the substituent(s) represent 1 to 4 groups independently selected from Substituent Group α, a 5- or 6-membered saturated heterocyclyl group, a substituted 5- or 6-membered saturated heterocyclyl group in which the substituent(s) represent 1 to 4 groups independently selected from Substituent Group α, a 5- or 6-membered saturated heterocyclyl-(C1-C6 alkyl) group, a substituted 5- or 6-membered saturated heterocyclyl-(C1-C6 alkyl) group in which the substituent(s) represent 1 to 4 groups independently selected from Substituent Group α, a 5- or 6-membered saturated heterocyclyloxy group, a substituted 5- or 6-membered saturated heterocyclyloxy group in which the substituent(s) represent 1 to 4 groups independently selected from Substituent Group α, a 5- or 6-membered saturated heterocyclylcarbonyl group or a substituted 5- or 6-membered saturated heterocyclylcarbonyl group in which the substituent(s) represent 1 to 4 groups independently selected from Substituent Group α, and
• Substituent Group α represents the group consisting of a C1-C6 alkyl group, a hydroxy(C1-C6 alkyl) group, a halogeno(C1-C6 alkyl) group, a (C3-C8 cycloalkyl)-(C1-C6 alkyl) group, a C3-C8 cycloalkyl group, a hydroxy group, a C1-C6 alkoxy group, a halogeno(C1-C6 alkoxy) group, a C1-C6 alkylamino group, a di(C1-C6 alkyl)amino group, a carboxy group, a (C1-C6 alkoxy)carbonyl group, a carbamoyl group, a (C1-C6 alkylamino)carbonyl group, a di(C1-C6 alkyl)aminocarbonyl group, a cyano group, a halogeno group and an oxo group.