## Abstract ^13^C NMR spectra of six kawaโpyrones (styryl ฮฑโpyrones) have been assigned. The assignments are based on the splitting pattern in the coupled spectra, comparison of the chemical shifts with those of model compounds and by application of additivity relationships. The ^13^C NMR of styren
Carbon-13 NMR spectroscopy of biological systems
โ Scribed by Glickson, Jerry D. ;Opella, Stanley J.
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 75 KB
- Volume
- 10
- Category
- Article
- ISSN
- 1043-7347
No coin nor oath required. For personal study only.
โฆ Synopsis
This book provides both an introduction for the novice and a review for the expert to the rapidly developing field of 13 C NMR spectroscopy of biological systems. It consists of a forward by Joachim Seelig, a preface by the author, and six chapters dealing with basic principles and key applications. The mix of theory and application defines the unique quality of this book.
Chapter 1, by Nicolau Beckmann, provides a ลฝ . brief summary 5 pages, 26 references of basic principles from a historical perspective. The reader is referred to basic texts for details, and landmark developments are cited. Beginning with continuous wave NMR spectroscopy, it describes the introduction of Fourier transform and double resonance techniques. Highlights of solid state NMR include polarization transfer, decoupling, and magic-angle spinning methods. The chapter ends with a description of heteronuclear polarization transfer, indirect proton NMR detection of 13 C, and spectral editing techniques.
Chapter 2, Gemmeker and Kessler, is unique in providing a coherent view of the multidimensional NMR methods applied to proteins and nucleic acids by structural biologists and the analytical NMR methods used by organic chemists. The success in bridging this gap makes this an extraordinarily valuable contribution; perhaps these authors are the only ones with sufficient experience to show that these two branches of NMR spectroscopy are not nearly as disparate as they may seem. The wide range of individual experiments are unified by the focus on the 13 C nucleus, which in most applications is observed through the nearby 1 H nuclei, leading naturally to multidimensional experiments that display the effects of the available chemical shift and spin coupling interactions. The analytical applications emphasize those experiments that are performed ลฝ .
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๐ SIMILAR VOLUMES
## Abstract The ^13^C NMR spectra of all azabenzenoid isoxazolopyridines and some of their chloro derivatives are discussed. All ^13^C resonances were unambiguously assigned by means of gated decoupled spectra, from which oneโbond and longโrange ^13^C๏ฃฟ^1^H coupling constants have been determined fr
## Abstract Carbonโ13 NMR signal assignment of a number of polyoxygenated triterpenes of the oleanโ12โene and ursโ12โene series, carried out by considering the changes in chemical shift produced by the change of oxygenation pattern(s), and using methyl oleanolate as a model, are reported.
## Abstract The ^13^C NMR spectra of the most important hop bitter substances are analysed. All individual carbon atoms are assigned, except the oxygen bonded __sp__^2^ carbon atoms. Most assignments are made partly by comparison with analogous compounds and partly by reference to literature data.
## Abstract The bianthraquinonic biological pigments luteoskyrin and rugulosin and five polyhydroxyanthraquinone derivatives are studied by carbonโ13 NMR in DMSO solution. Peak assignment for the fourteen carbon atoms of these compounds is achieved by proton spin decoupling and by investigating the