Compounds of the formula I:
or a pharmaceutically acceptable salt thereof, wherein, R
1
is optionally substituted tetrazolyl, R
2
is optionally substituted phenyl, optionally substituted pyridinyl or optionally substituted thienyl, and R
3
, R
4
, R
5
, R
6
R
7
and R
8
are as defined herein. Also provided are methods of using the compounds for treating diseases associated with the P2X
3
and/or a P2X
2/3
receptor antagonist and methods of making the compounds.
式I的化合物:或其药用可接受的盐,其中,R1是可选择地取代的
四唑基,R2是可选择地取代的
苯基,可选择地取代的
吡啶基或可选择地取代的
噻吩基,而R3、R4、R5、R6、R7和R8的定义如本文所述。还提供了使用这些化合物治疗与P2X3和/或P2X2/3受体
拮抗剂相关的疾病的方法,以及制备这些化合物的方法。