1. Chemistry of Natural and Microbial Products Department, Pharmaceutical Industry Division, National Research Centre, 12622 Dokki, Giza, Egypt
2. Medicinal and Aromatic Plants Research Department, Pharmaceutical Industry Division, National Research Centre, 33 El Bohouth St., Dokki, Giza, Egypt, P.O. 12622.
3. Chemistry of Medicinal Plants Department, Pharmaceutical Industry Division, National Research Centre, 33 El Bohouth St., Dokki, Giza, Egypt, P.O. 12622.