| abstract |
A compound represented by formula I, or a pharmaceutically acceptable salt thereof, or a stereoisomer thereof, or a tautomer thereof, or a hydrate thereof, or a solvate thereof, or a metabolite thereof, or a prodrug thereof. R1-R5 and group A are as defined in the description. The compound is used for the preparation of drugs for treating diseases caused by KRAS G12C mutation and for treating and/or preventing cancers. |