Alan R. Katritzky - Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, FL 32611-7200 USA
Guowei Yao - Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, FL 32611-7200 USA
Stanislaw Rachwal - Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, FL 32611-7200 USA