| 摘要 |
The application discloses compounds of the Formula I: or a pharmaceutically acceptable salt thereof, wherein, X, R1, R2 R3, R4, R5, R6, R7 and R8 are as defined herein. Also provided are methods of using the compounds for treating diseases associated with the P2X3 and/or a P2X2/3 receptor antagonist and methods of making the compounds.
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