Yashunsky, Dmitry V.; Tsvetkov, Yury E.; Ferguson, Michael A.J., Journal of the Chemical Society. Perkin Transactions 1 (2001), 2002, vol. 2, # 2, p. 242 - 256
作者:Yashunsky, Dmitry V.、Tsvetkov, Yury E.、Ferguson, Michael A.J.、Nikolaev, Andrei V.
DOI:——
日期:——
Exploration of conformational flexibility and hydrogen bonding of xylosides in different solvents, as a model system for enzyme active site interactions
using NMR spectroscopy in a variety of solvents. Equilibria comprising the conformations 4C1, 2SO and 1C4 were found, with a strong dependence on the hydrogenbonding ability of the solvent. Studies of fluorinated analogues revealed a direct hydrogenbond from the hydroxyl group at C2 to the fluorine atom at C4 by a 1hJF4,HO2 coupling. Hydrogenbond directionality was further established via comparisons
溶液中碳水化合物的主要分布结构不一定代表生物活性物种。相反,在没有太大能量损失的情况下可访问的任何构象异构体可能存在于生物途径中。因此,已经通过在各种溶剂中使用NMR光谱研究了开始在体内合成抗增殖的糖胺聚糖的萘基木糖苷的构象偏好。平衡含有构象4 Ç 1,2小号ö和1 C ^ 4发现与溶剂的氢键合能力密切相关。氟化类似物的研究表明,通过1h J F4,HO2偶联,从C2的羟基到C4的氟原子有直接氢键。氢键方向性通过氟化左旋葡聚糖分子的比较进一步确定。