申请人:KYOWA HAKKO KOGYO CO., LTD.
公开号:EP1547616A1
公开(公告)日:2005-06-29
The present invention provides an agent for prevention and/or treatment of itching comprising a substance capable of suppressing the function involved in signal transduction of GPR4 as an active ingredient. It also provides a nitrogen-containing tricyclic compound represented by the formula (I) or a quaternary ammonium salt thereof, or a pharmaceutically acceptable salt thereof;
[wherein R1 represents substituted or unsubstituted lower alkyl, etc.; R2 represents hydrogen, substituted or unsubstituted lower alkyl, etc.; R3 and R4 are the same or different and each represents hydrogen, lower alkyl, etc.; n represents 0 or 1; X represents -(CH2)2-, etc.; and Y represents the formula (II);
(wherein W represents CH or a nitrogen atom; Z1 and Z2 are the same or different and each represents hydrogen, substituted or unsubstituted lower alkyl, etc.; and Z3 represents hydrogen, substituted or unsubstituted lower alkyl, etc.)]
本发明提供了一种用于预防和/或治疗瘙痒的药剂,包括一种能够抑制参与GPR4信号转导功能的物质作为活性成分。它还提供了一种由式(I)表示的含氮三环化合物或其季铵盐,或其药用可接受盐;[其中R1代表取代或未取代的较低烷基等;R2代表氢、取代或未取代的较低烷基等;R3和R4相同或不同,各自代表氢、较低烷基等;n代表0或1;X代表-(CH2)2-等;Y代表式(II);(其中W代表CH或氮原子;Z1和Z2相同或不同,各自代表氢、取代或未取代的较低烷基等;Z3代表氢、取代或未取代的较低烷基等)]