The bicyclo[3.3.1]nonane ring skeletons, with their distinctive three-dimensional structural features, are widely found in natural products, bioactive molecules, and functional materials, demonstrating significant value particularly in drug discovery. However, their structural rigidity and ring strain pose formidable synthetic challenges, including lengthy synthetic routes, poor selectivity, and low atom economy in conventional approaches. In recent years, transition-metal-catalyzed asymmetric s