Showing papers by "Gareth A. Morris published in 1986"
TL;DR: In this article, a review of the most useful methods for high-resolution NMR is presented, including 2D homo-and hetero-nuclear chemical shift correlation by direct and by relayed coherence transfer, and 1D polarization transfer.
Abstract: The rapid growth during the last decade of multiple pulse methods in one (1D) and two-dimensional (2D) NMR has produced over 100 new techniques of potential use in high-resolution NMR. This review sets out to identify and to illustrate those new methods which are most useful in the determination of molecular structure. Ten basic techniques are considered, including 2D homo- and hetero-nuclear chemical shift correlation by direct and by relayed coherence transfer, and 1D polarization transfer. Numerous variations on the basic techniques, for example multiple quantum filtration, are also discussed. Particular attention is paid to the problems of sensitivity and of the optimum choice of experimental techniques for different classes of structural problem.
154 citations
TL;DR: In this paper, the complete assignment of the sugar and acetate 13C and 1H signals of sucrose octaacetate by homo-and hetero-nuclear 2D NMR was described, using the Jeener (COSY) and relayed coherence transfer techniques and heteronuclear shift correlation via both one-bond and long-range couplngs.
Abstract: The complete assignment of the sugar and acetate 13C and 1H signals of sucrose octaacetate by homo- and hetero-nuclear 2D NMR is described, using the Jeener (COSY) and relayed coherence transfer techniques and heteronuclear shift correlation via both one-bond and long-range couplngs.
30 citations
TL;DR: In this article, a new family of pulse sequences is described which allows the measurement of spectra in systems with strong interfering resonances such as those of solvents, which is unsuitable for most two-dimensional NMR experiments which require uniform excitation of all resonances.
28 citations
14 citations
TL;DR: In this paper, a review of the most useful methods for high-resolution NMR is presented, including 2D homo-and hetero-nuclear chemical shift correlation by direct and by relayed coherence transfer, and 1D polarization transfer.
Abstract: The rapid growth during the last decade of multiple pulse methods in one (1D) and two-dimensional (2D) NMR has produced over 100 new techniques of potential use in high-resolution NMR. This review sets out to identify and to illustrate those new methods which are most useful in the determination of molecular structure. Ten basic techniques are considered, including 2D homo- and hetero-nuclear chemical shift correlation by direct and by relayed coherence transfer, and 1D polarization transfer. Numerous variations on the basic techniques, for example multiple quantum filtration, are also discussed. Particular attention is paid to the problems of sensitivity and of the optimum choice of experimental techniques for different classes of structural problem.
5 citations
TL;DR: The overall biosynthesis of the large macrolide oligomycin A from a sequence of acetate, propionate and butyrate units, demonstrated by the specific incorporation of [1- 13 C]-labelled precursors, is in accord with the known structure, and the indirect incorporations from propionates and Butyrate are very low.
4 citations
TL;DR: In this article, a mixture of 2- and 3-propyl compounds were synthestsed and alkylated with 1-nitropropane to give 4-benzylamino-1,5-dihydroxy-2-propylanthraquinone.
4 citations
TL;DR: The reaction of [MoO(C5H10NO)2(C6H4O2] with benzene 1,2-diol(catechol) in CHCl3 has been characterized by X-ray crystallography, NMR spectroscopy and cyclic voltammetry.
3 citations
TL;DR: The structure of an octa-acylated derivative of a disaccharide isolated from oriental tobacco was confirmed with the aid of long-range proton-carbon-13 shift correlation by 2D n.m. spectroscopy using a 10 mg sample as discussed by the authors.
Abstract: The structure of an octa-acylated derivative of a disaccharide isolated from oriental tobacco has been confirmed with the aid of long-range proton–carbon-13 shift correlation by 2D n.m.r. spectroscopy using a 10 mg sample.
2 citations
Journal Article•
1 citations