Deoxyribose ring conformation of [d(GGTATACC)]2: an analysis of vicinal proton-proton coupling constants from two-dimensional proton nuclear magnetic resonance

Biochemistry ◽  
1988 ◽  
Vol 27 (16) ◽  
pp. 6013-6020 ◽  
Author(s):  
Ning Zhou ◽  
Sadasivam Manogaran ◽  
Gerald Zon ◽  
Thomas L. James
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Coupling Constants ◽  
Proton Nuclear Magnetic Resonance ◽  
Two Dimensional ◽  
Ring Conformation ◽  
Proton Proton ◽  
Proton Coupling ◽  
Vicinal Proton ◽  
Nuclear Magnetic

Two-dimensional proton nuclear magnetic resonance "maps" of acetaminophen metabolites in human urine.

1985 ◽  
Vol 31 (5) ◽  
pp. 757-762 ◽  
Author(s):  
J R Bales ◽  
J K Nicholson ◽  
P J Sadler
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Human Urine ◽  
Nmr Spectra ◽  
Proton Nuclear Magnetic Resonance ◽  
Two Dimensional ◽  
Proton Proton ◽  
One Dimensional ◽  
Considerable Simplification ◽  
Nuclear Magnetic

Abstract Two-dimensional proton-proton correlated NMR spectra of concentrated urine from a subject who had ingested a 1-g dose of acetaminophen are reported. These "maps" provide a considerable simplification of the spectrum in comparison with conventional one-dimensional NMR spectra. In the present case, peaks for all the major acetaminophen metabolites, including the L-cysteinyl conjugate, can be unambiguously assigned.

scholarly journals Carbon-13 nuclear magnetic resonance spectra of oxazoles

1979 ◽  
Vol 57 (23) ◽  
pp. 3168-3170 ◽  
Author(s):  
Henk Hiemstra ◽  
Hendrik A. Houwing ◽  
Okko Possel ◽  
Albert M. van Leusen
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Nmr Spectra ◽  
Chemical Shifts ◽  
Coupling Constants ◽  
Proton Coupling ◽  
Nuclear Magnetic Resonance Spectra ◽  
C Nmr ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

The 13C nmr spectra of oxazole and eight mono- and disubstituted derivatives have been analyzed with regard to the chemical shifts and the various carbon–proton coupling constants of the ring carbons. The data of the parent oxazole are compared with thiazole and 1-methylimidazole.

A 1H and 13C nuclear magnetic resonance study of nucleosides with methylated pyrimidine bases

1982 ◽  
Vol 60 (24) ◽  
pp. 3026-3032 ◽  
Author(s):  
Frank E. Hruska ◽  
Wayne J. P. Blonski
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Chemical Shifts ◽  
Nuclear Magnetic Resonance Study ◽  
Coupling Constants ◽  
Magnetic Resonance Data ◽  
Proton Coupling ◽  
13C Nuclear Magnetic Resonance ◽  
Pyrimidine Bases ◽  
Nuclear Magnetic

Alkylated pyrimidine bases are of interest from the viewpoint of mutagenesis and carcinogenesis. 1H nuclear magnetic resonance data are presented for a series of ribosides and arabinosides alkylated at the O2,O4, N3, and C5 positions of the pyrimidine base. The data provide information about the stereochemical effects of base methylation. The J(5—6) proton coupling constants show that O-alkylation leads to a decrease in the π-bond order of the C5—C6 bond. The 13C chemical shifts are related to the tautomeric changes effected by O-alkylation.

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