1. Universitat Rovira i Virgili; Departament de Química Física i Inorgànica; C/Marcel.lí Domingo, 1 43007 Tarragona Spain
2. Centre for Synthesis and Chemical Biology, School of Chemistry; University College Dublin; Belfield, Dublin 4 Ireland
3. Early Product Development; Pharmaceutical Sciences, IMED Biotech Unit, AstraZeneca, Pepparedsleden 1; SE-431 83 Mölndal Sweden