Various hydroxysuccinimidyl and hydroxyphthalimidyl glycosides were synthesized.

Salient features of gold-catalyzed glycosidation were applied.

Alkynyl 1,2-orthoesters as glycosyl donors were exploited.

The reaction was noticed to be high yielding, diastereoselective, and catalytic method.

The protocol was found to be compatible for the synthesis of aminoxy derivatives of higher oligosaccharides also.