2,4-Diazido-2,4,6-trideoxy-l-hexopyranoses as valuable building units in the synthesis of natural products

Abstract Synthesis of five l -enantiomers of 2,4-diazido-2,4,6-trideoxy-pyranoses has been accomplished. These sugars were prepared via the regioselective protection of hydroxyl groups in l -rhamnoside and l -fucoside, followed by triflation and subsequent S N 2 substitution with azido nucleophiles.