申请人:BANYU PHARMACEUTICAL CO., LTD.
公开号:EP0889034A1
公开(公告)日:1999-01-07
The present invention relates to a compound represented by the general formula (I) or a pharmaceutically acceptable salt thereof, and a treating agent for hyperphagia, obesity or diabetes, which comprises such a compound or salt as an active ingredient:
[wherein Ar1 is an aryl group or an aromatic heterocyclic group, which may be substituted by a group selected from the group consisting of a lower alkyl group, a lower hydroxyalkyl group, a lower alkylene group and a group represented by -NRaRb; R1 is a hydrogen atom or a lower alkyl group; each of R2 and R3 which are the same or different, is a lower alkyl group, or both of R2 and R3 are bonded to each other to form an alkylene group which may have an oxygen atom or a sulfur atom interposed, said alkylene group being a group which may be substituted by one or two lower alkyl groups; R4 is a hydrogen atom, or a lower alkyl group which may be substituted by a group selected from the group consisting of a hydroxyl group, an amino group, a carbamoyl group and a lower alkoxycarbonyl group; Ar2 is an aryl group or an aromatic heterocyclic group, which may be substituted by a group selected from the group consisting of a halogen atom, a hydroxyl group, a lower alkyl group, a lower haloalkyl group, a lower alkoxy group, a lower alkylthio group, a lower hydroxyalkyl group, a lower alkoxy-lower alkyl group, a group represented by -NRcRd and a group represented by -NRe-CO-NRfRg; W is an oxygen atom, a sulfur atom, or a group represented by -CHRj- or -NRk-].
本发明涉及一种通式(I)代表的化合物或其药学上可接受的盐,以及一种治疗食欲亢进、肥胖或糖尿病的药物,其有效成分包括这样的化合物或盐:
[其中 Ar1 是芳基或芳香杂环基,可被选自由低级烷基、低级羟烷基、低级亚烷基和 -NRaRb 所代表的基团组成的基团取代;R1 是氢原子或低级烷基;相同或不同的 R2 和 R3 中的每一个都是低级烷基,或 R2 和 R3 两者相互键合形成一个亚烷基,该亚烷基中可能有一个氧原子或一个硫原子,所述亚烷基是一个可被一个或两个低级烷基取代的基团;R4 是氢原子,或可被选自羟基、氨基、氨基甲酰基和低级烷氧基羰基的基团取代的低级烷基;Ar2 是芳基或芳香杂环基,可被选自由卤素原子、羟基、低级烷基、低级卤代 烷基、低级烷氧基、低级烷硫基、低级羟烷基、低级烷氧基-低级烷基、由 -NRcRd 表示的基团和由 -NRe-CO-NRfRg 表示的基团组成的组取代;W 是氧原子、硫原子或由 -CHRj- 或 -NRk- 代表的基团]。