1. Natural Products Research Unit, Centre of Excellence for Innovation in Chemistry (PERCH-CIC), Department of Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
2. Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
3. Department of Biology, Faculty of Science, Srinakharinwirot University, Bangkok 10110, Thailand
4. Department of Chemistry, Biology, and Marine Science, Faculty of Science, University of the Ryukyus, Okinawa 903-0213, Japan