A concise route to novel mimetics of Kdn2en, based on Delta(4)-uronic acids
, from D-glucurono-6,3-lactone is presented. Uronic acid-based mimetics in
which an aliphatic ether (O-glycoside), a thioether (S-glycoside), or aceta
mide takes the place of the natural C-6 glycerol sidechain of the sialic ac
id were synthesized from the key intermediate, methyl 2,3,4-tri-O-acetyl-al
pha-D-glucopyranosyluronate bromide. (C) 2000 Elsevier Science Ltd. All rig
hts reserved.