1. Faculty of Science, Natural Products Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Khon Kaen University, Khon Kaen, Thailand
2. Faculty of Agricultural Technology, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, Thailand
3. Natural Products Research Section, Research Division, National Cancer Institute, Bangkok, Thailand
4. Department of Crop Sciences and Agroforestry, Faculty of Tropical Agrisciences, Czech University of Life Sciences Prague, Prague, Czech Republic