Glycosides I (R = H, R1 , n = 2, 4), transformed into bifunctional (alc., ester) spacer mols., have been synthesized. After deprotection, these spacer glycosides, contg. a free carboxyl group, have been transformed efficiently into glycoconjugates using the coupling reagent N,N,N',N\"-tetramethyl(succinimido)uronium tetrafluoroborate (TSTU) for the formation of an active ester. [on SciFinder (R)]