Semisynthesis of Complex-Type Biantennary Oligosaccharides Containing Lactosamine Repeating Units from a Biantennary Oligosaccharide Isolated from a Natural Source.


Poly-N-acetyllactosamine (poly-LacNAc) structures on glycoproteins play important roles in essential biological events such as cell-cell adhesion. Here, we report a new strategy for the semisynthesis of LacNAc-extended complex-type biantennary oligosaccharides. We found an efficient isopropylidenation reaction that selectively protects the terminal Gal-3,4… (More)
DOI: 10.1021/acs.joc.7b02485