Heteronuclear nuclear magnetic resonance studies of cobalt corrinoids. 15. The structure of glutathionylcobalamin: A proton and carbon-13 two-dimensional nuclear magnetic resonance study at 600 MHz

Biochemistry ◽  
1993 ◽  
Vol 32 (33) ◽  
pp. 8421-8428 ◽  
Author(s):  
Kenneth L. Brown ◽  
Xiang Zou ◽  
Susan R. Savon ◽  
Donald W. Jacobsen
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Nuclear Magnetic Resonance Study ◽  
Two Dimensional ◽  
Magnetic Resonance Study ◽  
Magnetic Resonance Studies ◽  
Nuclear Magnetic

Nuclear magnetic resonance studies. V. The tautomerism of tasmanone and related β-triketones

1965 ◽  
Vol 18 (9) ◽  
pp. 1405 ◽  
Author(s):  
IRC Bick ◽  
DHS Horn
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Usnic Acid ◽  
Nuclear Magnetic Resonance Study ◽  
Magnetic Resonance Study ◽  
Magnetic Resonance Studies ◽  
Nuclear Magnetic

From a nuclear magnetic resonance study of the tautomerism of tasmanone and 1,1,3,3-tetramethylphloroglucinol (syncarpic acid), it is deduced that tasmanone consists of a mixture of tautomers (I) and (II) with the tautomer (I) present in the larger proportion. Similarly it is deduced that the tautomers of agglomerone (XI; R = CHMe2), 3-acetyl-O-methylfilicinic acid (XI R; = Me), ceroptene (XI; R = CH=CHPh), and usnic acid (XIII) with the extended conjugation are the more stable and populated ones.

Previously unreported p-terphenyl derivatives with antibiotic properties from the fruiting bodies of Sarcodonleucopus (Basidiomycetes). A two-dimensional nuclear magnetic resonance study

1987 ◽  
Vol 65 (10) ◽  
pp. 2369-2372 ◽  
Author(s):  
C. Tringali ◽  
M. Piattelli ◽  
C. Geraci ◽  
G. Nicolosi ◽  
C. Rocco
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Spectral Analysis ◽  
Magnetic Resonance ◽  
Nuclear Magnetic Resonance Study ◽  
Chemical Transformations ◽  
Two Dimensional ◽  
Fruiting Bodies ◽  
Magnetic Resonance Study ◽  
Nuclear Magnetic

Two previously unreported antibiotic metabolites, 2′,3′,4″-triacetoxy-3,4,5′,6′-tetrahydroxy-p-terphenyl (10) and 2′,3′-diacetoxy-3,4,5′,6′,4″-pentahydroxy-p-terphenyl (11), have been isolated from the basidiomycete Sarcodonleucopus. Their structures have been determined by chemical transformations and spectral analysis, including heteronuclear two-dimensional nuclear magnetic resonance methods.

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