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Note | Special issue | Vol 82, No. 2, 2010, pp.1699-1704
Published online, 26th October, 2010
DOI: 10.3987/COM-10-S(E)107
Synthesis of 6-Deoxy-D-altrose Used as an Authentic Sample to Identify an Unknown Monosaccharide Isolated from the Fruiting Body of an Edible Mushroom

Masashi Yamada, Fumi Yoshida, Hiromune Ando, Hideharu Ishida,* Makoto Kiso, and Masakuni Tako

*Faculty of Applied Biological Sciences, Gifu University , 1-1 Yanagido, Gifu, Gifu 501-1193, Japan


Here, we describe the synthesis of 6-deoxy-D-altrose and its subsequent use as an authentic sample to verify the structure of a monosaccharide newly isolated from the fruiting body of an edible mushroom. D-Rhamnopyranoside, converted from D-mannopyranoside, was selectively protected to give the 3-OH derivative, which was converted to the corresponding 6-deoxy-D-altropyranoside by nucleophilic substitution of the 3-triflate with acetoxy group. Removal of the protecting group, including the temporary protection of the anomeric position with the THP group, afforded the desired 6-deoxy-D-altrose. Both the NMR data and the [α]D value were identical to the data on the natural product, thus indicating that the recently isolated monosaccharide was 6-deoxy-D-altrose.