Dhr. Barton et al., THE INVENTION OF RADICAL REACTIONS .36. SYNTHETIC STUDIES RELATED TO 3-DEOXY-D-MANNO-2-OCTULOSONIC ACID (KDO), Tetrahedron, 52(8), 1996, pp. 2717-2726
An application of the Barton ester based radical reactions in carbohyd
rate chemistry is described. The chain-elongation reaction with ethyl
alpha-trifluoroacetoxy acrylate 2, followed by treatment with phenylhy
drazine provided 3-deoxy-alpha-hydrazono-octulosonates 8a,b, derivativ
es of KDO and its gluco-isomer in good yield.