| 摘要 |
The present invention pertains to the field of medical technology, and particularly relates to a heterocyclic substituted pyrimidine compound represented by General Formula (I) and its pharmaceutically acceptable salt thereof, wherein R 1 , R 2 , R 3 , R 4 and R 5 are as defined in the description, the present invention also relates to a preparation method of the compound, a pharmaceutical composition containing the compound, and a use of the compound and the pharmaceutical composition in preparation of a medicine for enhancing a cGMP signal transduction function or a medicine for treating or preventing sexual dysfunction and diseases with lower urinary tract symptoms. |
