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Structure of 5'-O-acetyl-2',3'-O-isopropylideneuridine, C14H18N2O7

Seshadri, TP and Gautham, N and Viswamitra, MA (1983) Structure of 5'-O-acetyl-2',3'-O-isopropylideneuridine, C14H18N2O7. In: Acta Crystallographica Section C: Crystal Structure Communications, 39 (12). pp. 1706-1708.

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Abstract

M r = 326.3, monoclinic, P21, a --= 6.510 (2), b=8.432 (2), c= 15.114 (2),a, /~= 101.42 (3) ° , Z = 2, V= 813.15 A 3, D x = 1-33 Mg m -3, F(000) = 172, 2(Cu Ka) = 1.5418/~,, g(Cu Ka) = 0.906 mm -~, final R = 6.4% for 1924 observed counter reflections. The conformation about the glycosidic bond is syn [torsion angle C(6)-N(1)-C(1')-O(4')=-103.9(3)°]. The sugar pucker is C(2')-exo,C(3')-endo (3Tz). The conformation about the C(4')-C(5') bond is gauche-trans. An uncommon intermolecular hydrogen bond involving the ribose-ring oxygen O(1') and the base-nitrogen N(3) stabilizes the crystal structure.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to International Union of Crystallography
Department/Centre: Division of Biological Sciences > Microbiology & Cell Biology
Division of Physical & Mathematical Sciences > Physics
Date Deposited: 18 Nov 2009 10:05
Last Modified: 19 Sep 2010 05:31
URI: http://eprints.iisc.ernet.in/id/eprint/20097

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