Intramolecular aglycon delivery was performed for the first time starting from n-pentenyl glycofuranoside as a donor. p-Methoxybenzyl-assisted aglycon transfer required very mild reaction conditions and was promoted by N-iodosuccinimide without assistance of any Lewis acid catalyst. As a result, rare α-D-fucofuranose-containing disaccharides were obtained. Moreover, structure elucidation led to the conclusion that an N-succinimidyl residue was still present in the resulting products. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)