1. EaStCHEM School of Chemistry University of Edinburgh David Brewster Road Edinburgh EH9 3FJ UK
2. AstraZeneca Pharmaceutical Technology & Development Chemical Development UK Silk Road Macclesfield SK10 2NA UK
3. Instituto de Síntesis Orgánica and Dpto. de Química Orgánica Universidad de Alicante Apdo. 99 03080 Alicante Spain