Synthesis p. 243 - 245 (1990)
Update date:2022-08-30
Topics:
Kundu, Nitya G.
Das, Biswajit
Majumdar, Anjali
A simple synthesis of 2,4-dimethoxy-5-(3-oxoalkynyl)pyrimidines from the readily available 5-ethynyl-2,4-dimethoxypyrimidine is described.The sequence proceeds via an ethynylboron intermediate which is acylated with carboxylic anhydrides.The 5-(3-oxo-1-alkynyl)products are hydrogenated to the saturated analogs and these are O-dealkylated with chlorotrimethylsilane/sodium iodide to give 5-(3-oxoalkyl)uracils, e.g., 5-(3-oxobutyl)-, 5-(3-oxopentyl)-, and 5-(3-oxohexyl)uracil.These compounds and the nucleosides derived therefrom are of interest as anticancer and antiviral agents.
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