1. Dublin City University, School of Chemical Sciences, Dublin 9, Ireland, UMR 7312 CNRS et Université de Reims Champagne-Ardenne, Institut de Chimie Moléculaire de Reims, UFR Sciences, B.P. 1039, 51687, Reims, Cedex 02, France, and James Cook University, School of Pharmacy and Molecular Sciences, CBMDT, Townsville, Queensland 4811, Australia