173467-17-9Relevant academic research and scientific papers
Facile synthesis of 4-acylamino-2,6-anhydro-2,3,4-trideoxy-D-glycero-D- galacto-non-2-enoic acids
Sun,Kai,Tanaka,Takayanagi,Furuhata
, p. 1654 - 1658 (1995)
The title compounds were synthesized from 3-deoxy-D-glycero-D-galacto-2- nonulosonic acid (5, KDN) by a new method which is similar to the Ritter reaction. The structures of these compounds were elucidated from the MS, elemental analysis, 1H-NMR and 13C-NMR data, and the stereochemistry of methyl 4-benzoylamino-5,7,8,9-tetra-O-acetyl-2,6-anhydro-2,3-dideoxy-D- glycero-D-galacto-non-2-enonate (13) was determined by X-ray crystallographic analysis.
Syntheses of 2,6-anhydro-3-deoxy-D-glycero-D-galacto-non-2-enonic acid (KDN2en) and its hydrogenation products
Sun, Xue-Long,Kai, Toshitsugu,Takayanagi, Hiroaki,Furuhata, Kimio
, p. 541 - 547 (2007/10/03)
Methyl 4,5,7,8,9-penta-O-acetyl-2,6-anhydro-3-deoxy-D-glycero-D-galacto-non-2-enonate (5) was synthesized from KDN methyl ester 2 with a catalytic amount of concentrated sulfuric acid in acetic anhydride, or from 2-chloro-KDN methyl ester 4 with DBU in good yield. Hydrogenation of 4 and 5 with 10% Pd-C gave 2-deoxy-2-Hax-KDN 8 and 2-deoxy-2-Heq-KDN derivative 11 in high yield, respectively. The structures of these compounds were elucidated from the MS, elemental analysis, 1H NMR and 13C NMR data.
A novel glycosylation of 3-deoxy-D-glycero-D-galacto-2-nonulosonic acid (KDN) via in situ pyranose-furanose rearrangement
Sun, Xue-Long,Kai, Toshitsugu,Fujita, Syuji,Takayanagi, Hiroaki,Furuhata, Kimio
, p. 795 - 798 (2007/10/03)
In studies on the glycosylation of 3-deoxy-D-glycero-D-galacto-2- nonulosonic acid (KDN) derivatives, O-glycosides of furanose-type KDN were synthesized from benzyl 4,5,7,8,9-penta-O-acetyl-2-bromo-2,3-dideoxy-D- glycero-D-galacto-2-nonulopyranosonate under Koenigs-Knorr reaction conditions. The furanoid structures of the KDN moiety were supported by with 1H-NMR experiments, and the reaction was considered as a novel glycosylation with ring contraction, which proceeded via in situ pyranose-furanose rearrangement of the KDN moiety, and subsequent coupling with acceptors.
