1. UoN
Chair of Oman’s Medicinal Plants and Marine Natural Products, University of Nizwa,
P.O. Box 33, Birkat Al Mauz, Nizwa 616, Sultanate of Oman
2. Department
of Chemistry and Polymer Science, University of Stellenbosch, Private
Bag X1, Matieland, Stellenbosch 7600, South Africa
3. Department
of Pharmaceutical and Biological Chemistry, UCL School of Pharmacy, London WC1N 1AX, United Kingdom