1. Department of Pharmaceutical and Medicinal Chemistry, Faculty of Pharmacy, Niger Delta University, Wilberforce Island, Nigeria
2. WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, GL 1 XL, UK
3. Department of Chemistry, Faculty of Science, University of Ibadan, Ibadan, Nigeria
4. Department of Chemistry, Faculty of Science, University of Lagos, Lagos, Nigeria