Amino cellulose sulfate : synthesis characterization and physicochemical behavior Amino cellulose sulfates a new class of polyampholytic polysaccharide derivatives are accessible by a three step synthesis; tosylation sulfation and nucleophilic displacement for introduction of amino moieties. Thus tosylate moieties can be introduced in position 6 of the repeating unit of the cellulose backbone. Subsequently anionic sulfate groups can be linked to the tosyl cellulose by the treatment with sulfur trioxide pyridine complex. ...