Development of a Temporary Marker for Peptideselectronic Supplementary Information (Esi) Available: Ir, Uv, 1H Nmr and 13C Nmr Spectra of Compounds 2A–I, 3B–H, 4B–H, 5, 6C and H, 7H, 8–12, 13C and H, and 14. See Http://Www.rsc.org/Suppdata/Ob/B2/B212470J/