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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

Gonnella, Nina C. and Roberts, John D. (1982) 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 of the American Chemical Society, 104 (11). pp. 3162-3164. ISSN 0002-7863. http://resolver.caltech.edu/CaltechAUTHORS:20151005-120248928

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Abstract

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.


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http://dx.doi.org/10.1021/ja00375a038DOIArticle
http://pubs.acs.org/doi/abs/10.1021/ja00375a038PublisherArticle
Additional Information:© 1982 American Chemical Society. Received May 22, 1981. Supported by the National Science Foundation and by the Public Health Service, Research Grant No. GM-11072 from the Division of General Medical Sciences.
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NSFUNSPECIFIED
U.S. Public Health Service (USPHS)GM-11072
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Caltech Gates and Crellin Laboratories of Chemistry6440
Record Number:CaltechAUTHORS:20151005-120248928
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20151005-120248928
Official Citation: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 Nina C. Gonnella and John D. Roberts Journal of the American Chemical Society 1982 104 (11), 3162-3164 DOI: 10.1021/ja00375a038
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ID Code:60766
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:05 Oct 2015 22:47
Last Modified:05 Oct 2015 22:47

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