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:
X
1
and X
2
are different from each other and represent a sulfur atom or a carbon atom; R
1
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; R
2
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.
The present invention provides an inhibitory substance against ALK5 which is a TGF-β type I receptor and provides a hair growth stimulant or a hair growth agent based on its novel activities.
一种由式表示的
噻唑咪唑衍
生物或其药学上可接受的盐,并且一种ALK5
抑制剂,用作脱发的治疗剂或具有上述物质作为活性成分的生发剂,其中:X1和X2不同且表示
硫原子或碳原子;R1表示苯基;取代苯基;与杂环芳香环融合的苯基;
吡啶基;或与杂环芳香环融合的
吡啶基;R2表示氢原子、卤原子、具有1至6个碳原子的烷基、1至6个碳原子的烷基,其上取代有1至5个卤原子、具有1至6个碳原子的烷氧基、具有1至5个碳原子的烷酰基或具有1至6个碳原子的羟基烷基;A表示由式表示的基团。本发明提供了一种抗ALK5的抑制物质,该物质是一种TGF-β类型I受体,并基于其新的活性提供了一种生发刺激剂或生发剂。