Abstract High-resolution, 1 H- (360 and 400 MHz) and 13 C-n.m.r. (90.52 and 100.57 MHz) spectra of the mutarotated N -(1-deoxy- d -fructos-1-yl)- l -amino acids (“fructose-aminoacids”) 1–14 in D 2 O are reported. The 1 H spectra allow unambiguous assignment of the signals of the major constituents (β-pyranose forms). Signals of the other forms are not well resolved and therefore not interpreted. The
N.M.R. untersuchungen und analytik von N-(1-desoxy-d-fructos-1-YL)-N-nitroso-l-aminosäuren (“N-nitroso0fructoseaminosäuren”)
作者:Harald Röper
DOI:10.1016/0008-6215(87)80131-3
日期:1987.7
Abstract Thirteen N -(1-deoxy- d -fructos-1-yl)- N -nitroso- l -amino acids were prepared, in 83–95% yield, by nitrosation of the corresponding “fructose-amino acids” with sodium nitrite in water-hydrochloric acid, at pH 3. The 1 H-n.m.r. spectra were complicated by the presence of different sugar-ring forms (α,β-furanoses and-pyranoses). In addition, signal doubling for all proton resonances were