1. Department of Chemistry College of Science Sultan Qaboos University Muscat, P.O. Box 36, P.C. 123, Sultanate of Oman
2. Department of Crop Sciences College of Agricultural and Marine Sciences Sultan Qaboos University Muscat Oman
3. Department of Medicinal Chemistry Faculty of Pharmacy Tehran University of Medical Sciences Tehran 1417614411 Iran
4. Drug Design and Development Research Center The Institute of Pharmaceutical Sciences (TIPS) Tehran University of Medical Sciences Tehran Iran
5. Biomolecular NMR Ruhr University of Bochum D 44780 Bochum Germany