Dedicated to Professor Richard Schmidt for his seminal contributions to glycoside synthesis
Adopting the ‘remote activation concept’ toward stereocontrolled glycoside synthesis with minimal use of protection groups, a general synthesis of phenolic 1,2-cis glycopyranosides is reported, as exemplified by aryl α-d-galacto-, α-d-gluco- and 2-azido α-d-glucopyranosides among others using glycosyl donors bearing an anomeric (3-bromo-2-pyridyloxy) group and catalyzed by methyl triflate.
Key words
aryl glycoside - stereocontrolled glycosidation - minimal protection - 1,2-
cis d-glycopyranoside - phenyl sialoside