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Variable-temperature [superscript 1]H-NMR and AB initio study of 5-amino-imidazole-4-carboxamide (AICA) : competing paths for amide-H scrambling
(University of Missouri--Columbia, 2008)
5(4)-aminoimidazole-4(5)-carboxamide (AICA and TAICA) is an important precursor for the synthesis of purines in general and of the nucleobases adenine and guanine in particular. Biotic nucleobase synthesis has been studied ...
Ammonia elimination from protonated nucleobases
(University of Missouri--Columbia, 2007)
The dediazoniations of the diazonium ion 1 of 4-aminopyrimidine and of the tautomeric cytosinediazonium ions 2 and 3 are facile and result in the formations of cations 4, 5, and 6. The pyrimidine ring-opening of 4, 5 and ...
Nitrosative guanosine deamination : pyrimidine ring opening implications of effects in homogeneous solution as well as anisotropic environments
(University of Missouri--Columbia, 2007)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] In recent years a great deal of interest has been focused on the exposure to nitrous acid (HNO2), nitric oxide (NO) and other nitrosating species ...