208 .

Catalytic Asymmetric Cascade Using Spiro-Pyrrolidine Organocatalyst: Efficient Construction of Hydrophenanthridine Derivatives

Tian, J.-M.; Yuan, Y.-H.; Xie, Y.-Y.; Zhang, S.-Y.; Ma, W.-Q.; Zhang, F.-M.; Wang, S.-H.; Zhang, X.-M.; and Tu,Y.-Q.*