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      Homodecoupled 1,1- and 1,n-ADEQUATE: Pivotal NMR Experiments for the Structure Revision of Cryptospirolepine

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          Pure shift NMR.

          Klaus Zangger (2015)
          Although scalar-coupling provides important structural information, the resulting signal splittings significantly reduce the resolution of NMR spectra. Limited resolution is a particular problem in proton NMR experiments, resulting in part from the limited proton chemical shift range (∼10 ppm) but even more from the splittings due to scalar coupling to nearby protons. "Pure shift" NMR spectroscopy (also known as broadband homonuclear decoupling) has been developed for disentangling overlapped proton NMR spectra. The resulting spectra are considerably simplified as they consist of single lines, reminiscent of proton-decoupled C-13 spectra at natural abundance, with no multiplet structure. The different approaches to obtaining pure shift spectra are reviewed here and several applications presented. Pure shift spectra are especially useful for highly overlapped proton spectra, as found for example in reaction mixtures, natural products and biomacromolecules.
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            Gradient selection in inverse heteronuclear correlation spectroscopy

            Wieland Willker, Dieter Leibfritz, Rainer Kerssebaum … (1993)
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              Bilinear rotation decoupling of homonuclear scalar interactions

              A. Pines, D.P. Weitekamp, J.R. Garbow (1982)
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                Author and article information

                Journal
                Title: Angewandte Chemie International Edition
                Abbreviated Title: Angew. Chem. Int. Ed.
                Publisher: Wiley-Blackwell
                ISSN: 14337851
                Publication date Created: August 24 2015
                Publication date (Print): August 24 2015
                Volume: 54
                Issue: 35
                Pages: 10160-10164
                Article
                DOI: 10.1002/anie.201502540
                SO-VID: 8e86c744-e4d1-4837-8cb4-f1e2e61f2d1d
                Copyright © © 2015
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                http://doi.wiley.com/10.1002/tdm_license_1.1

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