Nitrogen-containing carbohydrate derivatives. Part XXIII. Some ring-opening reactions of methyl 2,3-N-aroylepimino-4,6-O-benzylidene-2,3-dideoxy-α-<scp>D</scp>-mannopyranosides
作者:Z. M. El Shafei、R. D. Guthrie
DOI:10.1039/j39700000843
日期:——
Reaction of methyl 2,3-N-aroylepimino-4,6-O-benzylidene-α-D-mannosides (1) with sodium iodide in NN-dimethylformamide gave only the 2-N-3-O-oxazolines. Reaction with thiocyanate ion, however, gave no oxazolines but instead the methyl 2-arylamido-4,6-O-benzylidene-3-deoxy-3-thiocyanato-α-D-altrosides, which were desulphurised to give the appropriate 2,3-dideoxy-2-arylamido-derivatives.
甲基的反应2,3- Ñ -aroylepimino -4,6- ø -亚苄基- α- d -mannosides(1)与碘化钠NN二甲基甲酰胺,得到仅2- Ñ -3- Ò -oxazolines。然而,与硫氰酸根离子的反应没有得到恶唑啉,而是得到了甲基2-芳基氨基-4-6,6- O-亚苄基-3-脱氧-3-硫氰酸根合-α- D-金属苷,将其脱硫得到合适的2,3 -二脱氧-2-芳基酰胺衍生物。
MEYERZURECKENDORF, Chemische Berichte, 1965, vol. 98, p. 93 - 97