Synthesis of selected aminodeoxy analogues of galabiose and globotriose

Six aminodeoxy 2-(trimethylsilyl)ethyl (Me3SiEt) glycoside analogues of galabiose (4′- and 6′-aminodeoxy) and globotriose (6″-, 4″-, 2″-, and 6′-aminodeoxy) were synthesized by glycosylation of protected Me3SiEt galactoside and lactoside acceptors with azido-substituted monosaccharide donors, followed by reduction of the azido groups and removal of the protecting groups.