1. Department of Chemistry, Faculty of Science, Obafemi Awolowo University, Ile-Ife, Nigeria
2. Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, India
3. Department of Pharmacognosy, Faculty of Pharmacy, Obafemi Awolowo University, Ile-Ife, Nigeria
4. Department of Pharmacognosy, Faculty of Pharmacy, University of Ibadan, Ibadan, Nigeria
5. Department of Chemistry, University of Pretoria, Pretoria, South Africa
6. Department of Botany, Faculty of Science, Obafemi Awolowo University, Ile-Ife, Nigeria