作者:Martin Matwiejuk、Joachim Thiem
DOI:10.1002/ejoc.201101708
日期:2012.4
A comprehensive acidity study of carbohydrate hydroxy groups has been carried out. Relative acidities (Ke) were determined spectrophotometrically for partially methylated methyl α-D-glycopyranosides. Apparently, the acidity is strongly affected by intramolecular hydrogen bonding as well as stereochemistry and solvation. By comparison with pKe and pKa values of aliphatic alcohols and polyols the first
已经进行了碳水化合物羟基的综合酸度研究。对于部分甲基化的甲基 α-D-吡喃糖苷,通过分光光度法测定相对酸度 (Ke)。显然,酸度受分子内氢键以及立体化学和溶剂化的强烈影响。通过与脂肪醇和多元醇的 pKe 和 pKa 值进行比较,获得了部分保护的吡喃糖苷的 pKa 值的首次估计值。这些发现有助于理解碳水化合物羟基的相对反应性。