| abstract |
A compound represented by formula (I) or a tautomer, an optical isomer, a nitrogen oxide, a solvate, a pharmaceutically acceptable salt or prodrug thereof are useful for treating or relieving an HIF-related and/or EPO-related disease or condition in patient. n The preparation method for the compound, and use of a drug composition containing the compound and the compound or the drug composition in preparation of a drug are also provided. |