Abstract
Oligosaccharides are linked to the protein surface and play roles in a number of biological events. Therefore, much attention is being paid to research to investigate the function of the oligosaccharides. In order to investigate the function of oligosaccharides, many synthetic approaches have been examined by synthesizing N-linked oligosaccharides. In this paper, we introduce recent synthetic developments focusing on the synthesis of N-linked oligosaccharides.