Gong Y, Chen L, Zhang W, Salter R. Transglycosylation in the Modification and Isotope Labeling of Pyrimidine Nucleosides.
Org Lett 2020;
22:5577-5581. [PMID:
32628494 DOI:
10.1021/acs.orglett.0c01941]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Transglycosylation of pyrimidine nucleosides is demonstrated in a one-pot synthesis of uridine derivatives under microwave irradiation. Inductive activation of 2',3',5'-tri-O-acetyl uridine with a 5-nitro group produces a more-reactive glycosyl donor. Under optimized Vorbrüggen conditions, the 5-nitrouridine facilitates a reversible nucleobase exchange with a series of 5-substituted uracils. The protocol is also exemplified in a gram-scale reaction under thermal heating. The strategy provides easy access to isotopically labeled uridine.
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