1. Chemistry of Natural Compounds Department , Pharmaceutical and Drug Industries Research Division, National Research Centre , Dokki-Giza , 12622 , Egypt
2. Chemistry of Medicinal Plants Department , Biology Unit, Central Laboratory for Pharmaceutical and Drug Industries Research Division, National Research Centre , Dokki-Giza , 12622 , Egypt
3. Plant Biochemistry Department , National Research Centre , Dokki-Giza , 12622 , Egypt
4. Microbial Chemistry Department , National Research Centre , Dokki-Giza , 12622 , Egypt
5. Central Laboratory for Evaluation of Veterinary Biologics , Abbassia-Cairo , 13181 , Egypt