1. Chemistry of Natural Compounds Department National Research Center 33 El Bohouth St. Dokki Giza 12622 Egypt
2. Pharmacognosy Department Faculty of Pharmacy Cairo University Cairo 12613 Egypt
3. Plant Production Department College of Food & Agriculture Sciences King Saud University P.O. Box 2460 Riyadh 11451 Saudi Arabia
4. Department of Botany Faculty of Science Mansoura University Mansoura 35516 Egypt
5. Faculty of Pharmaceutical Sciences Tokushima Bunri University Yamashiro-cho Tokushima 770-8514 Japan