| abstract |
A small molecule PD-1/PD-L1 inhibitor and the use thereof in drugs. Specifically, provided is a small molecule PD-1/PD-L1 inhibitor that is a chemical compound represented by formula (I), or a stereoisomer, geometric isomer, tautomer, oxynitride, hydrate, solvate, metabolic product, ester, pharmaceutically acceptable salt, or prodrug thereof. Further provided is a preparation method for the compound represented by formula (I), a pharmaceutical composition, and the use thereof in preparation of drugs for prevention or treatment of diseases relating to PD-1/PD-L1 signaling pathways. |