1. Faculty
of Chemistry, VNUHCM−University of Science, 227 Nguyen Van
Cu Street, District 5, Ho Chi Minh City, Vietnam
2. Tay Nguyen Herbals JSC, Tu Tra Ward, Don Duong District, Lam Dong Province Vietnam
3. Cancer
Research Laboratory, Vietnam National University, Ho Chi Minh City, 227 Nguyen Van Cu Street, District 5, Ho Chi
Minh City, Vietnam
4. Division
of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan