Abstract

The title compound, 1-(5-O-benzoyl-2,3-dideoxy-2-oxo-α-d-ribofuranosyl)- 2,4(1H, 3H)-pyrimidinedione, C16H14N2O6, is an α-nucleoside analogue. The glycosyl torsion angle [O4′—C1′—N1—C2 − 76.9 (6)°] has a syn conformation. The sugar puckering is O4′-endo/C4′-exo, with pseudorotation parameters θm = 19.8 and P = 61.0. The exocyclic C3′—C4′—C5′—O5′ torsion angle is gauche-trans [177.1 (6)°]. The pyrimidine N3 atom forms a hydrogen bond with the O4 atom of a symmetry-related molecule.

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