1. Faculty
of Chemistry, University of Science, Vietnam National University-Hochiminh City, 227 Nguyen Van Cu Street, District 5, Vietnam
2. Research
Institute for Biomedical Sciences, Tokyo University of Science, Chiba 278-8510, Japan
3. Division
of Natural Drug Discovery, Department of Translational Research, Institute
of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan