Systematic chemoenzymatic synthesis of O-sulfated sialyl Lewis x antigens
作者:Abhishek Santra、Hai Yu、Nova Tasnima、Musleh M. Muthana、Yanhong Li、Jie Zeng、Nicholas J. Kenyon、Angelique Y. Louie、Xi Chen
DOI:10.1039/c5sc04104j
日期:——
O-Sulfated sialyl Lewisxantigens containing different sialic acid forms were chemoenzymatically synthesized using a bacterial sialyltransferase mutant.
The sialyl Lewis x tetrasaccharide with a propylamine aglycon was assembled by chemoselective glycosylation from a p-tolyl thioglycosyl donor obtained from an enzymatically synthesized sialodisaccharide. Combining the advantages of highlyefficient enzymatic synthesis of sialoside building blocks, and diverse chemical glycosylation, this chemoenzymatic approach is practical for obtaining complex sialosides