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.
化合物I的公式:或其药物可接受的盐,其中,R1是可选取代的
四唑基,R2是可选取代的苯基,可选取代的
吡啶基或可选取代的
噻吩基,而R3,R4,R5,R6,R7和R8如本文所定义。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。