Abstract: Disclosed is a novel compound having Syk and/or Abl inhibitory activities, which is useful for prevention/treatment of allergic diseases, autoimmune diseases, arthritides and cancers. Specifically disclosed is a pyrazolopyrimidine compound represented by the formula [I] or [III] below, a tautomer thereof, a stereoisomer thereof, a pharmaceutically acceptable salt thereof, or a solvent of any of them.

Abstract: A thiazolylimidazole derivative represented by the formula or a pharmaceutically acceptable salt thereof, and an ALK5 inhibitor, an therapeutic agent for alopecia or a hair growth agent having the above as an active ingredient, wherein: X1 and X2 are different from each other and represent a sulfur atom or a carbon atom; R1 represents a phenyl group; a substituted phenyl group; a phenyl group condensed with a hetero aromatic ring; a pyridyl group; or a pyridyl group condensed with a hetero aromatic ring; R2 represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkyl group having 1 to 6 carbon atoms substituted with 1 to 5 halogen atoms, an alkoxy group having 1 to 6 carbon atoms, an alkanoyl group having 1 to 5 carbon atoms, or a hydroxyalkyl group having 1 to 6 carbon atoms, A represents a group which is represented by the formula.

Abstract: Disclosed is a pyrazinamide compound represented by the formula (1), a tautomer, stereoisomer or pharmaceutically acceptable salt thereof, or a solvate of the compound or the tautomer, stereoisomer or pharmaceutically acceptable salt thereof, which has an excellent GK-activating activity and is therefore useful as a medicinal agent. (1) wherein R1 represents a hydrogen atom, a C1-8 alkyl group, a C3-8 cycloalkyl group, a C2-9 heterocyclyl group, a phenyl group, a C1-9 heteroaryl group, a C7-14 arylalkyl group or the like; R2 represents a C1-8 alkyl group, a C2-9 heterocyclyl group, a phenyl group, a C1-9 heteroaryl group or the like; Ar represents a monocyclic or fused polycyclic C1-9 heteroaryl group represented by the formula (2) or a C2-9 heterocyclyl group represented by formula (2); Y represents —S—, —O— or —NH—; and Z represents —S—, —O— or —CH2—.

Abstract: A thiazolylimidazole derivative represented by the formula or a pharmaceutically acceptable salt thereof, and an ALK5 inhibitor, an therapeutic agent for alopecia or a hair growth agent having the above as an active ingredient, wherein: X1 and X2 are different from each other and represent a sulfur atom or a carbon atom; R1 represents a phenyl group; a substituted phenyl group; a phenyl group condensed with a hetero aromatic ring; a pyridyl group; or a pyridyl group condensed with a hetero aromatic ring; R2 represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkyl group having 1 to 6 carbon atoms substituted with 1 to 5 halogen atoms, an alkoxy group having 1 to 6 carbon atoms, an alkanoyl group having 1 to 5 carbon atoms, or a hydroxyalkyl group having 1 to 6 carbon atoms, A represents a group which is represented by the formula.

Abstract: A thiazolylimidazole derivative represented by the formula or a pharmaceutically acceptable salt thereof, and an ALK5 inhibitor, an therapeutic agent for alopecia or a hair growth agent having the above as an active ingredient, wherein: X1 and X2 are different from each other and represent a sulfur atom or a carbon atom; R1 represents a phenyl group; a substituted phenyl group; a phenyl group condensed with a hetero aromatic ring; a pyridyl group; or a pyridyl group condensed with a hetero aromatic ring; R2 represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkyl group having 1 to 6 carbon atoms substituted with 1 to 5 halogen atoms, an alkoxy group having 1 to 6 carbon atoms, an alkanoyl group having 1 to 5 carbon atoms, or a hydroxyalkyl group having 1 to 6 carbon atoms, A represents a group which is represented by the formula.

Abstract: An arginine derivative represented by the formula: 1