申请人:Shionogi & Co., Ltd.
公开号:EP2399910A1
公开(公告)日:2011-12-28
The present invention provides a novel P2X3 and/or P2X2/3 receptor antago nist.
A compound represented by the formula (I):
wherein Ra, Rb and Rc are,
(a) Ra and Rb are taken together =Z; and Rc is a group represented by R1c; or
(b) Rb and Rc are taken together to form a bond; and Ra is a group represented by -Y-R1a;
R1a and R1c are each independently hydrogen, substituted or unsubstituted alkyl, etc.; R2 and R3 are each independently substituted or unsubstituted aryl, etc.;
R4a and R4b are each independently hydrogen, substituted or unsubstituted alkyl, etc.; X is -N(R5)-, etc.;
R5 is hydrogen, substituted or unsubstituted lower alkyl, etc.;
-Y- is -O-, etc.;
=Z is =O, etc.; and
n is an integer of 0 to 4.
本发明提供了一种新型 P2X3 和/或 P2X2/3 受体拮抗剂。
由式(I)代表的化合物:
其中 Ra、Rb 和 Rc 为
(a) Ra 和 Rb 合起来=Z;而 Rc 是由 R1c 代表的基团;或
(b) Rb 和 Rc 合在一起形成键;Ra 是由-Y-R1a 所代表的基团;
R1a 和 R1c 各自独立地为氢、取代或未取代的烷基等; R2 和 R3 各自独立地为取代或未取代的芳基等;
R4a 和 R4b 各自独立地是氢、取代或未取代的烷基等; X 是 -N(R5)- 等;
R5 是氢、取代或未取代的低级烷基等;
-Y-是-O-等;
=Z 是 =O等;以及
n 是 0 至 4 的整数。