Characterization of polyphenols from plant materials through their silylation and 29Si NMR spectroscopy—line assignment through 29Si, 13C spin–spin couplings
Characterization of polyphenols from plant materials through their silylation and 29Si NMR spectroscopy—line assignment through 29Si, 13C spin–spin couplings
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通过甲硅烷基化和 29Si NMR 光谱表征植物材料中的多酚 - 通过 29Si、13C 自旋-自旋耦合进行谱线分配
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
J. Lachman
中科院分区：
文献类型：
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作者：
J. Schraml;V. Blechta;J. Sýkora;L. Soukupová;Petra Cuřínová;D. Pronek;J. Lachman
甲硅烷基化多酚和其他一些化合物的29 Si NMR谱线很难归属，因为没有与甲硅烷基以外的质子偶合。该分配可以通过小nJ（29 Si，13 C）耦合（n > 1）导出。使用先前描述的用于测量这些偶联的方法，在此对三甲基甲硅烷基化酚的三个实例证明了分配程序：7-羟基黄酮、阿魏酸和槲皮素。在某些情况下，该程序可用于鉴定甲硅烷氧基所连接的碳原子。版权所有© 2005年约翰威利父子有限公司。
The lines in 29Si NMR spectra of silylated polyphenols and some other compounds are difficult to assign owing to the absence of couplings with protons outside the silyl group. The assignment can be derived through small nJ(29Si, 13C) couplings (n > 1). Using a previously described method for measurements of these couplings, the assignment procedure is demonstrated here on three examples of trimethylsilylated phenols: 7‐hydroxyflavone, ferulic acid, and quercetin. In some cases the procedure can be used to identify carbon atoms to which the siloxy groups are attached. Copyright © 2005 John Wiley & Sons, Ltd.
Silicon-29核磁共振波谱检测限。
影响因子：
7.4
作者：
Knight,CT;Kinrade,SD
通讯作者：
Kinrade,SD