Synthesis and n.m.r.-spectral analysis of unenriched and [1-13C]-enriched 5-deoxypentoses and 5-O-methylpentoses
作者:Joseph R. Snyder、Anthony S. Serianni
DOI:10.1016/0008-6215(87)80180-5
日期:1987.6
preparing unenriched and [1-13C]-enriched 5-deoxy- and 5-O-methyl-pentoses in the D or L configuration. The 1H-n.m.r. spectra of these compounds have been interpreted, and the 13C-n.m.r. spectra assigned with the aid of 2-D 13C-1H chemical-shift correlation spectroscopy. Tautomeric forms (furanoses, hydrate, and aldehyde) in solution in 2H2O have been quantified with the aid of [1-13C]-enriched derivatives
描述了用于制备D或L构型的未富集和[1-13C]富集的5-脱氧和5-O-甲基戊糖的化学方法。解释了这些化合物的1H-nmr光谱,并借助2-D 13C-1H化学位移相关光谱法指定了13C-nmr光谱。在2H2O溶液中的互变异构形式(呋喃糖,水合物和醛)已通过富含[1-13C]的衍生物进行了定量。为了评估5-C-脱氧和5-O-甲基化对化学位移和偶联常数(1H-1H,13C- 1H和13C-13C)和戊呋喃糖构象。