申请人:Takeda Pharmaceutical Company Limited
公开号:EP1593667A1
公开(公告)日:2005-11-09
The present invention provides a compound represented by the formula
wherein
Ar1 is a cyclic group optionally having substituent(s);
R is a hydrogen atom, an optionally halogenated C1-6 alkyl, a phenyl optionally having substituent(s) or a pyridyl optionally having substituent(s);
Ra1, Ra2, Ra3 and Ra4 are the same or different and each is a hydrogen atom, an optionally halogenated C1-6 alkyl or the like;
Ar is a monocyclic aromatic ring optionally having substituent(s);
Y is an optionally halogenated alkylene group; and
R1 and R2 are (1) the same or different and each is a hydrogen atom or a C1-6 alkyl, (2) R1 and R2 form a nitrogen-containing heterocycle optionally having substituent(s) together with the adjacent nitrogen atom, or (3) R1 and Y form a nitrogen-containing heterocycle optionally having substituent(s) together with the adjacent nitrogen atom, and R2 is a hydrogen atom or a C1-6 alkyl;
provided that when the nitrogen-containing heterocycle formed by R1 and R2 together with the adjacent nitrogen atom is a piperazine, or when R is a C1-4 alkyl, Ar1 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.
本发明提供了一种由式表示的化合物
其中
Ar1 是任选具有取代基的环状基团;
R 是氢原子、任选卤化的 C1-6 烷基、任选具有取代基的苯基或任选具有取代基的吡啶基;
Ra1、Ra2、Ra3 和 Ra4 相同或不同,各自为氢原子、任选卤代的 C1-6 烷基或类似物;
Ar 是单环芳香环,可选择具有取代基;
Y 是任选卤代亚烷基;以及
R1 和 R2 (1) 相同或不同,且各自为氢原子或 C1-6 烷基;(2) R1 和 R2 组成含氮杂环,可选择与相邻氮原子一起具有取代基;或 (3) R1 和 Y 组成含氮杂环,可选择与相邻氮原子一起具有取代基,且 R2 为氢原子或 C1-6 烷基;
条件是当 R1 和 R2 与相邻氮原子一起形成的含氮杂环是哌嗪时,或当 R 是 C1-4 烷基时,Ar1 是具有取代基的环状基团或其盐,具有黑色素浓缩激素拮抗作用,可用作预防或治疗肥胖症等的药物。