Presently provided are IDO inhibitors of general formulae (VII), (VIII) as shown below and pharmaceutical compositions thereof, useful for modulating an activity of indoleamine 2,3-dioxygenase; treating indoleamine 2,3-dioxygenase (IDO) mediated immunosuppression; treating a medical conditions that benefit from the inhibition of enzymatic activity of indoleamine-2,3-dioxygenase; enhancing the effectiveness of an anti-cancer treatment comprising administering an anti-cancer agent; treating tumor-specific immunosuppression associated with cancer; and treating immunosupression associated with an infectious disease.
[EN] FIVE-MEMBERED HETEROCYCLO-PYRIMIDINE COMPOUND, PHARMACEUTICAL COMPOSITION AND USE THEREOF<br/>[FR] COMPOSÉ D'HÉTÉROCYCLO-PYRIMIDINE À CINQ CHAÎNONS, COMPOSITION PHARMACEUTIQUE ET UTILISATION ASSOCIÉE<br/>[ZH] 五元杂环并嘧啶类化合物、药物组合物及用途