An extremely practical method for synthesis of sugarorthoesters has been developed without using any organic amines or heavy metals as additives. Various sugarorthoesters were prepared in good yields by the reaction of an acylated glycosyl bromide and an alcohol in the presence of potassium fluoride.
The synthesis and characterisation of 2-O-(6-O-l-glycero-α,β-d-manno-heptopyranosyl-α-d-glycopyranosyl)- α,β-d-glucopyranose
作者:Sergey A. Nepogodev、Zbigniew Pakulski、Aleksander Zamojski、Otto Holst、Helmut Brade
DOI:10.1016/s0008-6215(00)90992-3
日期:1992.7
The title compounds were synthesised, and appropriate derivatives were characterised by GLC, GLC-MS, and NMR spectroscopy. The GLC and GLC-MS data proved 2-O-(6-O-L-glycero-alpha-D-manno-heptopyranosyl-alpha-D-glucopyranosyl)-D-glucopyranose to be a constituent of the outer-core region of the lipopolysaccharide from Escherichia coli K-12, indicating the heptosyl residue to be linked to the terminal glucopyranose residue.