Spin hyperpolarization in modern magnetic resonance

J Eills, D Budker, S Cavagnero, EY Chekmenev… - Chemical …, 2023 - ACS Publications
Magnetic resonance techniques are successfully utilized in a broad range of scientific
disciplines and in various practical applications, with medical magnetic resonance imaging …

Parahydrogen‐based hyperpolarization for biomedicine

JB Hövener, AN Pravdivtsev, B Kidd… - Angewandte Chemie …, 2018 - Wiley Online Library
Magnetic resonance (MR) is one of the most versatile and useful physical effects used for
human imaging, chemical analysis, and the elucidation of molecular structures. However, its …

14N to 15N Isotopic Exchange of Nitrogen Heteroaromatics through Skeletal Editing

GL Bartholomew, SL Kraus, LJ Karas… - Journal of the …, 2024 - ACS Publications
The selective modification of nitrogen heteroaromatics enables the development of new
chemical tools and accelerates drug discovery. While methods that focus on expanding or …

Hyperpolarized NMR Spectroscopy: d‐DNP, PHIP, and SABRE Techniques

KV Kovtunov, EV Pokochueva… - Chemistry–An Asian …, 2018 - Wiley Online Library
The intensity of NMR signals can be enhanced by several orders of magnitude by using
various techniques for the hyperpolarization of different molecules. Such approaches can …

15NRORC: An Azine Labeling Protocol

ZA Tolchin, JM Smith - Journal of the American Chemical Society, 2024 - ACS Publications
A practical method for the synthesis of 15N-labeled azines with a high degree of isotopic
enrichment is described. Activation of azine heterocycles with an electron-deficient arene …

Synthesis of 15N-Pyridines and Higher Mass Isotopologs via Zincke Imine Intermediates

HMH Nguyen, DC Thomas, MA Hart… - Journal of the …, 2024 - ACS Publications
Methods to incorporate stable radioisotopes are integral to pharmaceutical and
agrochemical development. However, despite the prevalence of pyridines in candidate …

Delivering strong 1H nuclear hyperpolarization levels and long magnetic lifetimes through signal amplification by reversible exchange

PJ Rayner, MJ Burns, AM Olaru… - Proceedings of the …, 2017 - National Acad Sciences
Hyperpolarization turns typically weak NMR and MRI responses into strong signals so that
ordinarily impractical measurements become possible. The potential to revolutionize …

Signal amplification by reversible exchange (SABRE): From discovery to diagnosis

PJ Rayner, SB Duckett - Angewandte Chemie International …, 2018 - Wiley Online Library
Signal amplification by reversible exchange (SABRE) turns typically weak magnetic
resonance responses into strong signals making previously impractical measurements …

Generalizing, extending, and maximizing nitrogen-15 hyperpolarization induced by parahydrogen in reversible exchange

JFP Colell, AWJ Logan, Z Zhou… - The Journal of …, 2017 - ACS Publications
Signal Amplification by Reversible Exchange (SABRE) is a fast and convenient NMR
hyperpolarization method that uses cheap and readily available para-hydrogen as a …

Over 20% 15N Hyperpolarization in Under One Minute for Metronidazole, an Antibiotic and Hypoxia Probe

DA Barskiy, RV Shchepin, AM Coffey… - Journal of the …, 2016 - ACS Publications
Direct NMR hyperpolarization of naturally abundant 15N sites in metronidazole is
demonstrated using SABRE-SHEATH (Signal Amplification by Reversible Exchange in …