1. UoN Chair of Oman's Medicinal Plants and Marine Natural Products; University of Nizwa; Nizwa -616 Sultanate of Oman
2. Department of Chemistry; University of Sargodha; Pakistan
3. Department of Biological Sciences and Chemistry, College of Arts and Sciences; University of Nizwa; Nizwa-616 Sultanate of Oman
4. Organic Chemistry; Martin-Luther-University Halle-Wittenberg; Kurt-Mothes-Str. 2 D-06120 Halle (Saale) Germany