节点文献
天然丰度的N-磷酰化氨基酸的15N NMR研究
Natural Abundance N-Phosphoryl Amino Acids Studied by 15N NMR Spectroscopy
【摘要】 采用15N-1H的2D HSQC、HMBC实验方法,测定了天然丰度的N-磷酰化氨基酸样品在溶液中的15N化学位移δN及偶合常数JN-P,JN-H.实验表明:对于15N天然丰度样品,这是一种快速有效的实验方法.研究发现:N-磷酰化后的氨基酸,其δN以及与氮原子直接相连的质子1H的化学位移均发生十分明显的高场位移,而偶合常数1JN-P,1JN-H的变化与化合物构型相关联.
【Abstract】 Natural abundance N-phosphoryl amino acids were studied by 15N NMR spectroscopy.15N NMR chemical shifts and coupling constants were determined by 15N-1H heteronuclear HSQC and HMBC techniques.The stereosensitive 1J(15N-31P) and 1J(15N-1H) coupling constants were used to analyze the geometry of nitrogen atoms in these compounds.The structural and 15N NMR spectroscopic characteristics of N-phosphoryl amino acids were discussed.
【关键词】 核磁共振(NMR);
15N NMR;
2D NMR;
天然丰度N-磷酰化氨基酸;
【Key words】 NMR; 15N NMR; 2D NMR; natural abundance N-phosphoryl amino acids;
【Key words】 NMR; 15N NMR; 2D NMR; natural abundance N-phosphoryl amino acids;
【基金】 国家自然科学基金资助项目(20572061)
- 【文献出处】 波谱学杂志 ,Chinese Journal of Magnetic Resonance , 编辑部邮箱 ,2009年04期
- 【分类号】O621.25
- 【下载频次】163