Synthesis of heparin fragments. A chemical synthesis of the pentasaccharide 0-(2-deoxy-2sulfamido-6-0-sulfo-a-D-glucopyranosyl)-(1 > 4)-0-(β -D-glucopyranosyluronic acid)-(1 > 4)-0-(2-deoxy-2-sulfamido-3,6-di-0-sulfo-a-D-glucopyranosyl)-(1 > 4)-0-(2-0-sulfo-a-L-idopyranosyluronic acid)-(1 > 4)-2-deoxy-2-sulfamido-6-0-sulfo-D-glucopyranose decasodium salt, a heparin fragment having high affinity for antithrombin III - Petitou, M; Duchaussoy, P; Choay, J; Sinay, P; Jacquinet, J C; Torri, G (Carbohydr Res, 1986)