Confinement of Nucleic Acid Bases and Related Compounds Using Tetra-p-sulfonatocalix[4]arene

2006 ◽  
Vol 6 (5) ◽  
pp. 1161-1167 ◽  
Author(s):  
Peter J. Nichols ◽  
Mohamed Makha ◽  
Colin L. Raston
Keyword(s):  
Nucleic Acid ◽  
Nucleic Acid Bases ◽  
Related Compounds

1H and 13C nuclear magnetic resonance and ultraviolet studies of the protonation of cytosine, uracil, thymine, and related compounds

1986 ◽  
Vol 64 (12) ◽  
pp. 2348-2352 ◽  
Author(s):  
Robert L. Benoit ◽  
Monique Frechette
Keyword(s):  
Experimental Data ◽  
Nuclear Magnetic Resonance ◽  
Sulfuric Acid ◽  
Nucleic Acid ◽  
Magnetic Resonance ◽  
Nucleic Acid Bases ◽  
Aqueous Sulfuric Acid ◽  
13C Nuclear Magnetic Resonance ◽  
Related Compounds ◽  
Nuclear Magnetic

The protonation of the three nucleic acid bases, cytosine, uracil, and thymine, and of related 4-amino-2,6-dimethylpyrimidine and 2-hydroxypyridine has been studied by 1H and 13C nuclear magnetic resonance and ultraviolet spectroscopies mostly in 0.18–18 M aqueous sulfuric acid. The experimental data have been interpreted on the basis of the excess acidity method. The pKn values as well as the assigned protonation sites are discussed and contrasted with other data.

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