STRUCTURE OF 1-(3-DEOXY-3-PHENYLSELENO-2,5-DI-O-PIVALOYL-BETA-D-XYLOFURANOSYL)URACIL

被引：2
|
作者：
YAMAGUCHI, K
MATSUMURA, G
HARAGUCHI, K
ITOH, Y
TANAKA, H
MIYASAKA, T
机构：
来源：
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS | 1992年 / 48卷
关键词：
D O I：
10.1107/S0108270191009101
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
C25H23N2O7Se, M(r) = 542.43, monoclinic, C2, a = 21.078 (1), b = 7.036 (2), c = 19.603 (1) angstrom, beta = 109.05 (1)-degrees, V = 2748.1 (7) angstrom 3, Z = 4, D(x) = 1.311 Mg m-3, lambda(Cu K-alpha(1)) = 1.54050 angstrom, mu = 2.238 mm-1, F(000) = 1108, T = 295 K, final R = 0.037 for 2191 reflections. The sugar conformation and puckering parameters are 2E with P = -15.8-degrees and psi(m) = 40.3-degrees. The N-glycosidic torsion angle chi has a value of 142.6 (4)-degrees in the anti range. The C4'-C5' side-chain conformation is -ap with gamma = -175.7 (6)-degrees. The conformation parameters are in accordance with the IUPAC-IUB Joint Commission on Biochemical Nomenclature [Pure Appl. Chem. (1983). 55, 1273-1280] guidelines.
引用
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页码：387 / 389
页数：3
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