1. Chemistry Department, Federal University of Agriculture, Abeokuta 110001, Nigeria
2. Faculty of Health and Life Sciences, De Montfort University, The Gateway, Leicester LE1 9BH, U.K.
3. Centre Universitaire de la Charente, Université de Poitiers, Pharmacy 79 Chemin de la Croix du Milieu, La Couronne 16400, France