1. Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 China
2. Engineering Center of Catalysis and Synthesis for Chiral MoleculesDepartment of ChemistryFudan University Shanghai 200433 China
3. Shanghai Engineering Center of Industrial Asymmetric Catalysisfor Chiral Drugs Shanghai 200433 China