Sulfoquinovose and its aldonic acid: their preparation and oxidation to 2-sulfoacetaldehyde by periodate

6-Deoxy-6-C-sulfo-d-glucopyranose (sulfoquinovose) has been prepared and characterised as its brucinium and potassium salts. The bis-cyclohexylammonium salt of its aldonic acid, 6-deoxy-6-C-sulfo-d-gluconic acid, has also been obtained. Their oxidation by sodium periodate gives 2-sulfoacetaldehyde.