Studies of the tautomerism of purine and the protonation of purine and its 7- and 9-methyl derivatives by nitrogen-15 nuclear magnetic resonance spectroscopy
Journal Article
·
· J. Am. Chem. Soc.; (United States)
The nitrogen-15 NMR shifts of purine and its 7- and 9-methyl derivatives were measured at the natural-abundance level as a function of pH. The results made it possible for both the sites and magnitudes of protonation of purine and its derivatives to be determined. A semiquantitative determination was made of the position of the N7H-N9H tautomeric equilibria of purine in both water and dimethyl sulfoxide.
- Research Organization:
- California Inst. of Tech., Pasadena
- OSTI ID:
- 6862959
- Journal Information:
- J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 104:11; ISSN JACSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
550201 -- Biochemistry-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
AQUEOUS SOLUTIONS
CHEMICAL REACTIONS
CHEMICAL SHIFT
DATA
DISPERSIONS
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
INFORMATION
ISOMERIZATION
ISOTOPES
LIGHT NUCLEI
MIXTURES
NITROGEN 15
NITROGEN ISOTOPES
NMR SPECTRA
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PH VALUE
PURINES
QUANTITY RATIO
SOLUTIONS
SPECTRA
STABLE ISOTOPES
STEREOCHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
550201 -- Biochemistry-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
AQUEOUS SOLUTIONS
CHEMICAL REACTIONS
CHEMICAL SHIFT
DATA
DISPERSIONS
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
INFORMATION
ISOMERIZATION
ISOTOPES
LIGHT NUCLEI
MIXTURES
NITROGEN 15
NITROGEN ISOTOPES
NMR SPECTRA
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PH VALUE
PURINES
QUANTITY RATIO
SOLUTIONS
SPECTRA
STABLE ISOTOPES
STEREOCHEMISTRY