Disclosed are novel pyridine pyrazinones or pharmaceutically acceptable salts thereof. Pharmaceutical compositions and the use of the compounds to treat diseases or disorders that are BET family bromodomain-dependent are also disclosed. Methods for preparing and using these compounds are further described.本發明揭示新穎吡啶吡酮或其醫藥學上可接受之鹽。亦揭示醫藥組合物及該等化合物治療BET家族溴結構域依賴性疾病或病症之用途。此外,亦描述製備及使用此等化合物之方法。