The present invention provides a novel pyrazole derivative and an androgen receptor antagonist containing the derivative. The present invention provides a compound represented by the formula (I′)
wherein R
1
is a hydrogen atom, a group via a carbon atom, a group via a nitrogen atom, a group via an oxygen atom, or a group via a sulfur atom; R
2
is a phenyl group having cyano (the phenyl group may further have substituent(s) other than cyano); R
3
is a hydrogen atom, a group via a carbon atom, a group via a nitrogen atom, a group via an oxygen atom, or a group via a sulfur atom; R
4
is a cyclic group optionally having substituent(s); and X is methylene optionally having substituent(s), or CO, or a salt thereof.
本发明提供一种新型
吡唑衍
生物和含有该衍
生物的雄激素受体拮抗剂。本发明提供一种由下式表示的化合物(I′):其中R1是氢原子、通过碳原子的基团、通过氮原子的基团、通过氧原子的基团或通过
硫原子的基团;R2是苯基,带有
氰基(苯基可能还有除
氰基之外的取代基);R3是氢原子、通过碳原子的基团、通过氮原子的基团、通过氧原子的基团或通过
硫原子的基团;R4是可选地带有取代基的环状基团;X是亚甲基,可选地带有取代基,或CO,或其盐。