Arias-Perez, Maria Selma; Lopez, Maria Soledad; Santos, Maria Jesus, Journal of the Chemical Society. Perkin Transactions 2 (2001), 2002, # 9, p. 1549 - 1552
作者:Arias-Perez, Maria Selma、Lopez, Maria Soledad、Santos, Maria Jesus
DOI:——
日期:——
Stereochemical study of the CD spectral differences between anomers of alkyl glucopyranosides
作者:Juan I Padrón、Jesús T Vázquez
DOI:10.1016/s0957-4166(98)00037-8
日期:1998.2
Slightly different chair conformation geometries were demonstrated to be the origin of the CD spectral differences observed in anomers of alkyl glucopyranosides. The study, using methyl glucopyranoside derivatives as model compounds, showed excellent agreement between CD data, 1H NMR data, and semiempirical calculations, and the geometries found explained satisfactorily the higher amplitudes observed
椅子构型的几何形状略有不同,这是在烷基吡喃葡萄糖苷的异构体中观察到的CD光谱差异的根源。该研究使用甲基吡喃葡萄糖苷衍生物作为模型化合物,显示出CD数据,1 H NMR数据和半经验计算之间的优异一致性,并且发现的几何形状令人满意地解释了四色取代的烷基吡喃葡萄糖苷的β-端基异构体观察到的更高振幅。涉及C2上的发色团的2 / 3、2 / 4和2/6的成对相互作用最依赖于端基异构构型,2/4相互作用甚至显示出异头异构体的相反CD符号。另外,发现2/3成对相互作用独立于糖苷配基的结构性质。