1. Department
of Chemistry, The University of Hong Kong, Hong Kong, China
2. State
Key Laboratory of Quality Research in Chinese Medicine and Institute
of Chinese Medical Sciences, University of Macau, Avenue Padre
Tomás Pereira S.J., Taipa, Macao, China
3. Institute of New Drug Research, Guangdong Province Key Laboratory of Pharmacodynamic, Constituents of Traditional Chinese Medicine & New Drug Research, College of Pharmacy, Jinan University, Guangdong, China
4. Institute
of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, P. R. China
5. Department of Applied Biology & Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, China