Improved Synthesis of 6-Deoxy-1,2-O-isopropylidene-β-L-talofuranose and 6-Deoxy-1,2-O-isopropylidene-β-L-idofuranose

Article abstract of DOI:10.1007/BF00809774

The key step in the preparation of 6-deoxy-1,2-O-isopropylidene-β-L-talofuranose (7) and 6-deoxy-1,2-O-isopropylidene-β-L-idofuranose (13) is the selective exchange of the 6-O-mesyl rest of 3-O-acetyl-5,6-O-dimesyl-1,2-O-isopropylidene-α-D-allofuranose (4) and 3-O-acetyl-5,6-O-dimesyl-1,2-O-isopropylidene-α-D-glucofuranose (10) by acetate group (potassium actate/18-crown-6).