4597 Angew. Chem. Int. Ed. 2005, 44, 4596–4599 www. angewandte. org 2005 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim the temporary protecting group to sustain the alkaline conditions in the nucleophilic substitution reaction.[20, 24] However, the Boc group must then be replaced with the Fmoc protecting group for the preferred Fmoc SPPS of glycopeptides.[30, 31] After the reaction shown in Scheme 1 was carried out following this ...
