1. Department
of Chemistry, Faculty of Science, Chiang Mai University, Sutep, Muang, Chiang
Mai 50200, Thailand
2. School
of Science, University of Phayao, Maeka, Muang, Phayao 56000, Thailand
3. Medical
Molecular Biology Research Unit, National Center for Genetic Engineering
and Biotechnology, National Science and Technology Development Agency, Thailand Science Park, Pathumthani 12120, Thailand
4. Natural
Products Research Laboratory, School of Science, Mae Fah Luang University, Tasud, Muang, Chiang Rai 57100, Thailand
5. School
of Chemistry, University of Wollongong, Wollongong, New South Wales 2522, Australia