1. Chemistry of Medicinal Plants Department, National Research Centre, 33 El-Bohouth St., Dokki, Giza, 12622, Egypt
2. Department of Natural Compounds Chemistry, National Research Centre, 33 El-Bohouth St., Dokki, Giza, 12622, Egypt
3. Chemistry of Natural and Microbial Products Department, National Research Centre, 33 El-Bohouth St., Dokki, Giza, 12622, Egypt
4. Department of Chemistry & Biochemistry, Texas Tech University, Lubbock, TX 79409, USA