Synthesis and Glycan–Protein Interaction Studies of <i>Se</i>-Sialosides by <sup>77</sup>Se NMR
作者:Tatsuya Suzuki、Chieka Hayashi、Naoko Komura、Rie Tamai、Jun Uzawa、Junya Ogawa、Hide-Nori Tanaka、Akihiro Imamura、Hideharu Ishida、Makoto Kiso、Yoshiki Yamaguchi、Hiromune Ando
DOI:10.1021/acs.orglett.9b02303
日期:2019.8.16
To expand the potential of Se-carbohydrates for multifunctional mimicry of sugars, herein we addressed the synthesis of the highly challenging and biologically significant Se-glycosides of sialic acid (Se-sialosides). An alpha-sialyl selenolate anion generated in situ smoothly reacted with electrophiles to give alpha-Se-sialosides as single stereoisomers. A Se-sialoside was sequentially incorporated with selenium, producing a triseleno-sialoside. This molecule was used as a Se-77 NMR-active handle for studying glycan-protein interaction, revealing different binding profiles of sialic acid binding proteins.