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nomenclature used originally by Inoue and adopted in
the current paper.
35. Inoue and co-workers25 used a similar cyclization to access
a
5-acetyl-3H-pyrrolo[2,3-d]pyrimidin-2-one nucleoside
directly from an N4-acetyl-5-alkynyl-20-deoxycytidine
(CuI, DMF, 120 °C).
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properties of nucleosides bearing both furo[2,3-d]pyrimi-
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the latter made by the action of ammonia on the former:
37. Pitsch, S.; Weiss, P. A. In Current Protocols in Nucleic
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