Hyperpolarising Pyruvate through Signal Amplification by Reversible Exchange (SABRE)

Hyperpolarising Pyruvate through Signal Amplification by Reversible Exchange (SABRE)
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通过可逆交换信号放大 (SABRE) 使丙酮酸超极化

DOI:
10.1002/ange.201905483
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发表时间:
2019
期刊:
影响因子:
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通讯作者:
Iali W
Iali W
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--
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作者:
Iali W

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使丙酮酸等试剂预磁的超极化方法目前正受到极大的关注,因为它们能产生灵敏度提升,允许通过磁共振跟踪疾病和询问细胞新陈代谢。在这里,我们介绍了可逆交换信号放大(SABRE)如何通过形成新型极化转移催化剂[Ir(H)2(η2-丙酮酸)(DMSO)(IMES)],在几秒钟内提供强13C丙酮酸信号增强。通过利用SABRE,除了[1,2-13C2]形式的长寿命单重态之外,还容易产生[1-13C]-和[2-13C]丙酮酸的强信号;后者可以在初始超极化步骤后五分钟观察到。我们还展示了这一发展如何有助于未来对化学反应的研究。
Hyperpolarisation methods that premagnetise agents such as pyruvate are currently receiving significant attention because they produce sensitivity gains that allow disease tracking and interrogation of cellular metabolism by magnetic resonance. Here, we communicate how signal amplification by reversible exchange (SABRE) can provide strong13C pyruvate signal enhancements in seconds through the formation of the novel polarisation transfer catalyst [Ir(H)2(η2‐pyruvate)(DMSO)(IMes)]. By harnessing SABRE, strong signals for [1‐13C]‐ and [2‐13C]pyruvate in addition to a long‐lived singlet state in the [1,2‐13C2] form are readily created; the latter can be observed five minutes after the initial hyperpolarisation step. We also demonstrate how this development may help with future studies of chemical reactivity.
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