The protected azidoglycoside derivative (I) is condensed with (R)-glycidol tosylate (II) to produce the glycidyl ether (III). Epoxide opening in (III) with N,N'-dimethyl-1,4-butanediamine (IV) furnishes the diamine-linked bis azidoglycoside (V). The title compound is then obtained by simultaneous reduction of the azido groups and O benzyl groups cleavage in (V) upon catalytic hydrogenation over Pearlman's catalyst.