Synthese DE L′Amino-3-Fluoro-2-Tridesoxy-2,3,6-L-Galactose (α-Fluoro-2-L-Daunosamine)

Abstract
3-Amino-2-fluoro-2,3,6-trideoxy-L-galactose 10 (.alpha.-fluoro-L-daunosamine) was synthesized in 10 steps starting from methyl-2,3-anhydro-4,6-O-benzylidene-.alpha.-D-mannopyranoside (overall yield 70%). Et3N, 3HF complex was used as the fluorinating agent, according to our previous work, for replacement of a mesyl group. Neighboring-group participation leads to a fluorinated product with retention of configuration. The structure of 10 was determined by 1H and 19F NMR spectroscopy.