1. Guangdong Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 People's Republic of China
2. Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai 201203 People's Republic of China
3. Zhongshan Institute for Drug Discovery Shanghai Institute of Materia Medica Chinese Academy of Sciences Zhongshan 528400 People's Republic of China