The major isomer, (E)-1,4-anhydro-1-ethoxy-carbonyl(formylamino)methylene-2,3 : 5,6-diO-isopropyl-idene-D-mannitol (2), obtained by the reaction of α-metallated ethyl isocyanoacetate with 2,3 :5,6-di-O-isopropylidene-D-mannono-1,4-lactone, gives on hydrogenation and acidic hydrolysis, 2-L-(and 2-D-)(β-D-mannofuranosyl)glycines (10) and (11), and can be converted into 2-L- and 2-D-(β-D-lyxofuransyl)glycines (12) and (13).
K. Bischofberger, R. H. Hall and A. Jordan, J. Chem. Soc., Chem. Commun., 1975, 806 DOI: 10.1039/C39750000806
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