Comparison of the NMR enantiodifferentiation of a chiral ruthenium(ii) complex of C2 symmetry using the TRISPHAT anion and a lanthanide shift reagent

2003 ◽  
Vol 27 (4) ◽  
pp. 748-751 ◽  
Author(s):  
Gilles Bruylants ◽  
Carole Bresson ◽  
Arnaud Boisdenghien ◽  
Frédéric Pierard ◽  
Andrée Kirsch-De Mesmaeker ◽  
...  
2020 ◽  
Vol 56 (19) ◽  
pp. 2897-2900
Author(s):  
James D. Swarbrick ◽  
John A. Karas ◽  
Jian Li ◽  
Tony Velkov

[Tm(DPA)3]3− generates paramagnetic, dispersed 2D transferred NOESY spectra for high-resolution structures of cationic peptides in the LPS micelle bound state.


1979 ◽  
Vol 44 (26) ◽  
pp. 4757-4761 ◽  
Author(s):  
David J. H. Smith ◽  
John D. Finlay ◽  
C. Richard Hall ◽  
J. J. Uebel

Molecules ◽  
2020 ◽  
Vol 25 (22) ◽  
pp. 5383
Author(s):  
Sio-Hong Lam ◽  
Hsin-Yi Hung ◽  
Ping-Chung Kuo ◽  
Daih-Huang Kuo ◽  
Fu-An Chen ◽  
...  

This study investigates the application of the paramagnetic shift reagent tris(dipivaloylmethanato)-europium(III) in NMR spectral studies of permethoxyacridone alkaloids (1–3) and pyranoacridone alkaloids (4–6). The induced chemical shifts (∆δ) of all protons were observed for the same molecule, and were compared to deduce the positions resulting from the distance nearby the Eu(dpm)3. Assignment of the H-2, H-4 and H-8 of polysubstituted acridones could be distinguished based on the least-squares method of lanthanide-induced shifts plotted against the mole ratios of Eu(dpm)3 to the substrate. The developed method is not only potentially useful for determining the planar structures of polysubstituted compounds, such as acridones, anthraquinones, xanthones, flavonoids, and phenanthrenes, but also applicable for their stereochemistry.


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