Structure and conformation of 5-methoxymethyl-N4-methyl-2'-deoxycytidine. 1990

Z C Jia, and G Tourigny, and A L Stuart, and L T Delbaere, and S V Gupta
Department of Biochemistry, University of Saskatchewan, Saskatoon, Canada.

C12H19N3O5, Mr = 285.25, monoclinic, P2(1), a = 7.0180 (6), b = 8.6946 (11), c = 10.7715 (10) A, beta = 91.055 (7) degrees, V = 657.15 A3, Z = 2, Dx = 1.441 g cm-3, lambda(Cu K alpha) = 1.5418 A, mu = 9.63 cm-1, F(000) = 304, T = 287 K, R = 0.039 for 1424 observed reflections. The furanose ring adopts the C(1')-exo envelope conformation (E1), with the glycosyl linkage anti (chi = 193.8 degrees). The pseudo-rotational parameters are P = 130.9 degrees and tau m = 39.4 degrees. In the deoxyribose ring, the side chain on C(5') has the t conformation. In the pyrimidine ring the N4-methyl takes a cis conformation to N(3) and the methoxymethyl side chain is on the same side of the cytidine plane as O(4').

UI MeSH Term Description Entries
D008968 Molecular Conformation The characteristic three-dimensional shape of a molecule. Molecular Configuration,3D Molecular Structure,Configuration, Molecular,Molecular Structure, Three Dimensional,Three Dimensional Molecular Structure,3D Molecular Structures,Configurations, Molecular,Conformation, Molecular,Conformations, Molecular,Molecular Configurations,Molecular Conformations,Molecular Structure, 3D,Molecular Structures, 3D,Structure, 3D Molecular,Structures, 3D Molecular
D003841 Deoxycytidine A nucleoside component of DNA composed of CYTOSINE and DEOXYRIBOSE. Cytosine Deoxyribonucleoside,Cytosine Deoxyriboside,Deoxyribonucleoside, Cytosine,Deoxyriboside, Cytosine
D014961 X-Ray Diffraction The scattering of x-rays by matter, especially crystals, with accompanying variation in intensity due to interference effects. Analysis of the crystal structure of materials is performed by passing x-rays through them and registering the diffraction image of the rays (CRYSTALLOGRAPHY, X-RAY). (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Xray Diffraction,Diffraction, X-Ray,Diffraction, Xray,Diffractions, X-Ray,Diffractions, Xray,X Ray Diffraction,X-Ray Diffractions,Xray Diffractions
D015394 Molecular Structure The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds. Structure, Molecular,Molecular Structures,Structures, Molecular

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