17O NMR spectroscopy of nucleoside derivatives; bonding characteristics of pyrimidine carbonyls |
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| Authors: | Herbert M Schwartz Malcolm MacCoss Steven S Danyluk |
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| Institution: | Division of Biological and Medical Research Argonne National Laboratory, Argonne, Illinois 60439 USA |
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| Abstract: | Various uridine derivatives have been selectively enriched (≈ 50%) at the 04 and 02 oxygens, and the 17O chemical shifts and linewidths measured. The chemical shifts, which are primarily dependent on π-bond-order and hydrogen bonding, show effects that are selective for the 02 and 04 oxygens. In particular, significantly more H-bonding to D2O and higher π bond order are found for the 04 oxygen. |
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