Starting from D-galactose, the synthesis of a p-tolyl 4-azido-3-O-benzyl-4,6-dideoxy2-S-(p-tolyl)-2-thio-alpha-D-mannopyranosyl-(1-->2)-4-azido-3-O-benzyl-4,6-dideoxy1-thio-beta-D-glucopyranoside has been achieved in an unconventional method involving the migration of thiotolyl with the formation of a episulfonium intermediate.
Starting from D-galactose, the synthesis of a p-tolyl 4-azido-3-O-benzyl-4,6-dideoxy2-S-(p-tolyl)-2-thio-alpha-D-mannopyranosyl-(1-->2)-4-azido-3-O-benzyl-4,6-dideoxy1-thio-beta-D-glucopyranoside has been achieved in an unconventional method involving the migration of thiotolyl with the formation of a episulfonium intermediate.