1. Department of Mathematical and Life Sciences, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739–8526, Japan
2. Department of Chemistry, Aswan-Faculty of Science, South Valley University, Aswan, Egypt
3. Natural Products Chemistry Department, National Research Centre, Dokki, Cairo, Egypt
4. Department of Botany, Aswan-Faculty of Science, South Valley University, Aswan, Egypt
5. Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930–0194, Japan
6. Department of Chemistry, Faculty of Science, El-Minia University, El-Minia 61519, Egypt
7. Department of Wood Science and Engineering, Oregon State University, Corvallis, OR 97331, USA