The present invention provides a compound represented by the formula
wherein
Ar
1
is a cyclic group optionally having substituent(s);
R is a hydrogen atom, an optionally halogenated C
1-6
alkyl, a phenyl optionally having substituent(s) or a pyridyl optionally having substituent(s);
Ra
1
, Ra
2
, Ra
3
and Ra
4
are the same or different and each is a hydrogen atom, an optionally halogenated C
1-6
alkyl or the like; Ar is a monocyclic aromatic ring optionally having substituent(s); Y is an optionally halogenated alkylene group; and
R
1
and R
2
are (1) the same or different and each is a hydrogen atom or a C
1-6
alkyl, (2) R
1
and R
2
form a nitrogen-containing heterocycle optionally having substituent(s) together with the adjacent nitrogen atom, or (3) R
1
and Y form a nitrogen-containing heterocycle optionally having substituent(s) together with the adjacent nitrogen atom, and R
2
is a hydrogen atom or a C
1-6
alkyl;
provided that when the nitrogen-containing heterocycle formed by R
1
and R
2
together with the adjacent nitrogen atom is a piperazine, or when R is a C
1-4
alkyl, Ar
1
is a cyclic group having substituent(s), or a salt thereof, having a melanin-concentrating hormone antagonistic action and useful as an agent for the prophylaxis or treatment of obesity and the like.
本发明提供了一种化合物,其表示为式子:
其中,Ar1是一个环状基团,可以具有取代基;R是氢原子,可选卤代的C1-6烷基,苯环,可以具有取代基,或者
吡啶环,可以具有取代基;Ra1,Ra2,Ra3和Ra4相同或不同,每个都是氢原子,可选卤代的C1-6烷基或类似物;Ar是一个单环芳香环,可以具有取代基;Y是可选卤代的脂肪族烷基;R1和R2是(1)相同或不同,每个都是氢原子或C1-6烷基,(2)R1和R2与相邻的氮原子一起形成含氮杂环,可以具有取代基,或(3)R1和Y与相邻的氮原子一起形成含氮杂环,可以具有取代基,并且R2是氢原子或C1-6烷基;但是当R1和R2与相邻的氮原子一起形成
哌嗪环,或当R是C1-4烷基,Ar1是具有取代基的环状基团或其盐时,该化合物具有
黑色素浓集激素拮抗作用,可用作预防或治疗肥胖症等药物。