S1 “Supporting Information” Title: Design of Non-competitive Interleukin-8 Inhibitors Acting on CXCR1 and CXCR2 Alessio Moriconi, † Maria Candida Cesta, † Maria Neve Cervellera, † Andrea Aramini, † Silvia Coniglio, † Sandro Colagioia, † Andrea Rosario Beccari, † Cinzia Bizzarri, † Michela Rita Cavicchia, † Massimo Locati, ‡,§ Emanuela Galliera, ‡ Paola Di Benedetto, † Paolo Vigilante, † Riccardo Bertini † and Marcello Allegretti † * Table of Contents: Elemental Analyses of Listed Compounds 13 C-NMR Data for Representative Compounds