Application of Parahydrogen-Induced Polarization to Unprotected Dehydroamino Carboxylic Acids
Application of Parahydrogen-Induced Polarization to Unprotected Dehydroamino Carboxylic Acids
复制标题
仲氢诱导极化在未保护的脱氢氨基羧酸中的应用
DOI:
10.1007/s00723-012-0391-0
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发表时间:
2013
影响因子:
1
通讯作者:
U. Bommerich
中科院分区:
文献类型:
--
作者:
Th. Trantzschel;M. Plaumann;J.Bernarding;D.Lego;T. Ratajczyk;S. Dillenberger;G. Buntkowsky;J. Bargon;U. Bommerich
One focus of current nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) investigation is the hyperpolarization of biologically relevant substrates. In this study, the application of parahydrogen-induced polarization (PHIP) to amino carboxylic acids was enabled by protonation of the amino group as well as of the carboxylic acid. Due to the donor character of these functional groups, they usually act as ligands at the active catalytic sites. To enable parahydrogenation, blocking of the catalytic sites by the functional groups has to be avoided. In a new approach, this was realized via protonation of the starting material. For the first time PHIP spectra of allylglycine, vigabatrin and γ-amino-butyric acid (GABA) were generated. The feasibility of the hydrogenation of amino carboxylic acids without using a protection group supersedes the deprotection reaction usually required. Hence, hydrogenation after protonation of the substrate opens the class of free dehydroamino carboxylic acids to PHIP.
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DOI:
10.1073/pnas.1010570107
发表时间:
2010-10-05
影响因子:
11.1
作者:
Pileio, Giuseppe;Carravetta, Marina;Levitt, Malcolm H.
通讯作者:
Levitt, Malcolm H.
DOI:
10.1513/pats.200507-071ds
发表时间:
2005-01-01
期刊:
Proceedings of the American Thoracic Society
影响因子:
--
作者:
van Beek, Edwin J R;Wild, Jim M
通讯作者:
Wild, Jim M
影响因子:
4
作者:
Boutain, Marie;Duckett, Simon B.;Lopez-Serrano, Joaquin
通讯作者:
Lopez-Serrano, Joaquin
影响因子:
--
作者:
F. Reineri;Alessandra Viale;W. Dastrù;R. Gobetto;S. Aime
通讯作者:
S. Aime
影响因子:
2.9
作者:
Jocelyn Thomas;Ya
通讯作者:
Ya