| 摘要 |
The present invention provides novel compounds having a P2X 3 and/or P2X 2/3 receptor antagonistic activity. A compound of Formula (I):
wherein R a and R b , and R d and R e are taken together to form oxo or the like; R 4a and R 4b are hydrogen or the like; n is 1 or the like; R 2 is aryl or the like; s and s' is 0 or the like;
R 9 and R 9' are halogen or the like; R 20a and R 20b are hydrogen, alkyl or the like; u is 1 to 4; R 13 is hydrogen or the like,
or its pharmaceutically acceptable salt. |
