2D Chemical exchange NMR spectroscopy by proton-detected heteronuclear correlation

1989 ◽  
Vol 111 (8) ◽  
pp. 3096-3098 ◽  
Author(s):  
Gaetano T. Montelione ◽  
Gerhard Wagner
Keyword(s):  
Nmr Spectroscopy ◽  
Chemical Exchange ◽  
Heteronuclear Correlation

scholarly journals IDENTIFICATION AND SEQUENCING BY NMR SPECTROSCOPY OF THE CARBOHYDRATE MOIETY IN A SAPONIN FROM Barringtonia asiatica

2010 ◽  
Vol 1 (3) ◽  
pp. 120-124
Author(s):  
Rymond J Rumampuk
Keyword(s):  
Nmr Spectroscopy ◽  
13C Nmr ◽  
Coupling Constants ◽  
Carbohydrate Moiety ◽  
Glycosidic Linkage ◽  
1H And 13C Nmr ◽  
Heteronuclear Correlation ◽  
Vicinal Coupling Constants ◽  
Nmr Signals

A trisaccharide chain in a saponin from the seeds of Barringtonia asiatica has been identified and sequenced as {[b-D-galactopyranosyl(1®3)- b-D-glucopyranosyl(1®2)]-b-D-glucuronopyranosyloxy} using a combination of homonuclear and heteronuclear correlation NMR spectroscopy. The 1H and 13C NMR signals of the sugar residues can be determined and distinguished from one other by use of the HMQC-TOCSY technique. Anomeric configurations were unambiguously assigned from the vicinal coupling constants 3JH-1,H-2 of the anomeric protons. Inter-glycosidic linkage assignments were elucidated using  HMBC.   Keyword: Barringtonia asiatica, carbohydrate, saponin, NMR

Sensitivity improvement in three-dimensional heteronuclear correlation NMR spectroscopy

1992 ◽  
Vol 96 (2) ◽  
pp. 416-424 ◽  
Author(s):  
Arthur G Palmer ◽  
John Cavanagh ◽  
R.Andrew Byrd ◽  
Mark Rance
Keyword(s):  
Nmr Spectroscopy ◽  
Three Dimensional ◽  
Heteronuclear Correlation ◽  
Sensitivity Improvement

scholarly journals Chemical exchange in novel spirobicyclic zwitterionic Janovsky complexes using dynamic1H NMR spectroscopy

2009 ◽  
Vol 47 (2) ◽  
pp. 158-164 ◽  
Author(s):  
A. S. Culf ◽  
M. Čuperlović-Culf ◽  
R. J. Ouellette
Keyword(s):  
Nmr Spectroscopy ◽  
Chemical Exchange
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