Glycosylamines V.* Preparation, Structure, Anomeric Configuration and Conformation of Some 7V-Acetylglycosylamines and iV-Acetyldiglycosylamines
نویسندگان
چکیده
N-Acetylation of (2,3,4,6-tetra-O-acetyl-a-D-glucopyranosyl) (2,3,4,6-tetra-0-acetyl-/?-D-glucopyranosyl)amine or bis(2,3,4,6-tetra-0-acetyl-/3-D-glucopyranosyl)amine afforded N-acetyl-bis(2,3, 4,6-tetra-0-acetyl-/3-D-glucopyranosyl)amine; deacetylation of the latter gave Af-acetyl-di-/3-Dglucopyranosylamine. Similarly, TV-acetylation of bis(2,3,4-tri-0-acetyl-/3-L-rhamnopyranosyl)amine led to N-acetyl-bis(2,3,4-tri-0-acetyl-/?-L-rhamnopyranosyl)amine and its deacetylation to di/?-L-rhamnopyranosylamine. The structure, anomeric configuration and conformation of the above-mentioned compounds and also of 7V-acetyl-/3-D-xylopyranosylamine, 7V-acetyl-2,3,4-tri-0acetyl-/?-D-xylopyranosylamině, N-acetyl-/?-D-ribopyranosylamině, and N-acetyl-2,3,4-triO-acetyl/3-D-ribopy r anosy lamině were determined by 1 H, 1 3 C NMR, and mass spectrometry methods.
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