1. Heterocyclic Compounds Research Group, Department of Chemistry; Universidad de Nariño; A.A. 1175; Pasto; Colombia
2. Heterocyclic Compounds Research Group, Department of Chemistry; Universidad del Valle; A.A. 25360; Cali; Colombia
3. Department of Inorganic and Organic Chemistry; Universidad de Jaén; 23071; Jaén; Spain