期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 21, 期 25, 页码 9044-9047出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201501182
关键词
NMR spectroscopy; oligosaccharides; pure shift; selective refocusing; structure elucidation
资金
- French Research Agency [ANR-2011-JS08-009-01]
- TGE RMN THC [Fr3050]
- Fondation Pierre Berge
- SIDACTION
A new correlation experiment cited as push-G-SERF is reported. In the resulting phased 2D spectrum, the chemical shift information is selected along the direct dimension, whereas scalar couplings involving a selected proton nucleus are edited in the indirect domain. The robustness of this pulse sequence is demonstrated on compounds with increasing structural and spectral complexity, using state-of-the-art spectrometers. It allows for full resolution of both dimensions of the spectrum, yielding a straightforward assignment and measurement of the coupling network around a given proton in the molecule. This experiment is intended for chemists who want to address efficiently the structural analysis of molecules with an overcrowded spectrum.
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