Rapid<sup>13</sup>C NMR hyperpolarization delivered from<i>para</i>-hydrogen enables the low concentration detection and quantification of sugars
作者:Peter M. Richardson、Wissam Iali、Soumya S. Roy、Peter J. Rayner、Meghan E. Halse、Simon B. Duckett
DOI:10.1039/c9sc03450a
日期:——
13C and 2H isotopically labelled agents we demonstrate how hyperpolarizationlifetime (T1) values can be extended, and how singlet states with longlifetimes can be created. The precise quantification of D-glucose-13C6-d7 at the millimolar concentration level is shown to be possible within minutes in conjunction with a linear hyperpolarized response as a function of concentration. In addition to the
单糖,如葡萄糖和果糖,对生命很重要。在这项工作中,我们强调了如何使用基于对氢的 NMR 超极化方法 SABRE-Relay(可逆交换中继的信号放大)通过核磁共振 (NMR)快速传递改进的13 C 糖检测能力。在 9.4 T 的高场和 3100 的13 T 高场显着增强13 C 信号增强,使这些材料的痕量检测以及它们的互变异构组成的量化成为可能。通过对13 C 和2 H 同位素标记试剂的研究,我们证明了超极化寿命 ( T 1) 值可以扩展,以及如何创建具有长生命周期的单线态。D-葡萄糖- 13 C 6 - d 7在毫摩尔浓度水平的精确量化显示可以在几分钟内结合作为浓度函数的线性超极化响应。除了使用标记材料进行测量外,还对具有天然丰度13 C 的毫摩尔样品进行了低浓度检测,其中可以通过单个瞬态实现异构形式的量化。
Tsukinoki, Takehito; Ishimoto, Keiko; Mukumoto, Mamoru, Journal of Chemical Research - Part S, 1996, # 1, p. 66 - 67
A simple, efficient, and selective deuteration via a flow chemistry approach
作者:István M. Mándity、Tamás A. Martinek、Ferenc Darvas、Ferenc Fülöp
DOI:10.1016/j.tetlet.2009.05.050
日期:2009.7
A simple and efficient deuteration methodology has been established for a wide variety of substrates using a continuous flow hydrogenation reactor. The described procedure is many times faster (1 mg min(-1)) compared to literature methods and the purity of the crude product can be as high as 99%. The deuterium Source is D2O, the consumption of which is very low. (C) 2009 Elsevier Ltd. All rights reserved.
Tsukinoki Takehito, Tsuzuki Hirohisa, Ishimoto Keiko, Nakayama Kouji, Kak+, J. Labell Compounds and Radiopharm, 34 (1994) N 9, S 839-844