Provided herein are novel aromatic heterocyclic compounds or a stereoisomer, a geometric isomer, a tautomer, an N-oxide, a hydrate, a solvate, a metabolite, a pharmaceutically acceptable salt or a prodrug thereof, and their uses for treating Alzheimer's disease. Also provided herein are pharmaceutical compositions containing such compounds, and methods for using such compounds or pharmaceutical compositions thereof to treat Alzheimer's disease.
