Kumar R, Springsteen G, Krishnamurthy R. Synthesis of 2-Thioorotidine and Comparison of Its Unusual Instability with Its Canonical Pyrimidine Counterparts.
J Org Chem 2019;
84:14427-14435. [PMID:
31608636 DOI:
10.1021/acs.joc.9b01546]
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Abstract
2-Thiopyrimidine nucleosides exhibit properties that are interesting from both a biological/medicinal and origins of life chemistry point of view. We report here the first synthesis of the nucleoside 2-thioorotidine and our observations on its unexpected lability with respect to its N-glycosidic bond when compared with its corresponding canonical pyrimidine counterparts. We hypothesize that the cause of the lability of the N-glycosidic bond is due to the combined steric and electronic effects from the 2-thio- and the 6-carboxyl groups, a lability that could, in turn, be useful for further chemical transformations.
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