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- W2149334652 abstract "The conformation of the sugar moiety of 8-(N-fluoren-2-ylamino)-2′-deoxyguanosine in solution has been examined as a function of temperature by 1H-nmr spectroscopy. Analysis of coupling constants shows that lowering the temperature to −50°C in methanol shifts the conformational equilibrium of the sugar ring resulting in a C2′-endo conformation at a mole fraction of 0.97. The computed phase angle of pseudorotation and amplitude of pucker are 154° and 36°, respectively, with very little discrepancy between the five calculated coupling constants and coupling constants extrapolated from the temperature profiles. A computer program has been written enabling a three-state best-fit analysis. The three-state analysis indicates an equilibrium between C2′-endo, C3′-endo, and 04′-endo conformations. In aqueous solution, the computed mole fraction of the 04′-endo form is 0.18 at 30°C. The conformation associated with the sugar ring and the C4′C5′ bond is compared to that of 2′-deoxyguanosine." @default.
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- W2149334652 date "1987-07-01" @default.
- W2149334652 modified "2023-09-27" @default.
- W2149334652 title "Conformational analysis of the 2′-deoxyribofuranose ring from proton-proton coupling constants: Analysis of a nucleoside-carcinogen adduct formed from 2-acetylaminofluorene utilizing a three-state model" @default.
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- W2149334652 doi "https://doi.org/10.1002/bip.360260704" @default.
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