1. Department of Chemistry, Faculty of Science, Menoufia University, Shebin El-Kom, Egypt
2. Medicinal and Aromatic Plants Research Department, National Research Centre, 33 El Bohouth St., Dokki, Giza, P.O.12622, Egypt
3. Phytochemistry and Plant Systematics Department, National Research Centre, 33 El Bohouth St., Dokki, Giza, P.O.12622, Egypt
4. Phytochemistry Department, National Research Centre, 33 El Bohouth St., Dokki, Giza, P.O.12622, Egypt
5. International Centre for Chemical and Biological Sciences (ICCBS), University of Karachi, Karachi-75270, Pakistan
6. Division of Pharmacognosy, Department of Medicinal Chemistry, Uppsala University, Biomedical Centre, Box 574, SE-751 23, Uppsala, Sweden