Abstract N-Alkylglucosylamines and carbon disulphide react to give 3-alkyl-5-hydroxy-5-(D- arabino-tetrahydroxybutyl) thiazolidine-2-thiones (I), which dehydrate to the corresponding Δ 4-thiazolines, isolated only as tetraacetates. A thiazolidine-2-thione forms also from the action of carbon disulphide on 1-N-methylamino-1-deoxy-D-fructose. l-Bromo-l-deoxy-2, 3: 4, 5-di-O-isopropylidene-D-fructose is obtained by the action of ...
