Journal of Heterocyclic Chemistry p. 691 - 695 (1995)
Update date:2022-08-28
Topics:
Huang
Ragouzeos
Rideout
Nucleophilic substitution at C3' of 1-(2-deoxy-5-O-trityl-β-D-erythro-pentofuranosyl)-2-methoxy-5-methyl- 4(1H)-pyrimidinone (5) with methyl iodide/triphenylphosphine/diethyl azodicarboxylate gave the expected inverted iodide 6 and minor epimer 7. Treatment of 6 with lithium nitrite/phloroglucinol yielded the desired nitro derivative 8 and subsequent acidic deprotection afforded the title compound 1. This represents a novel method for the introduction of a nitro group into the furanosyl moiety of a nucleoside. The nmr spectroscopic techniques (COSY, NOESY, nOe, HMQC and HMBC) were used to determine the stereochemistry at C3' of the nucleosides. Spectral analysis of H-D exchange at the 3'-position of 1 did not indicate the formation of its epimer 10.
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