Crystal structure of a nucleoside model for the inter­strand cross-link formed by the reaction of 2′-de­oxy­guanosine and an abasic site in duplex DNA

Acta Crystallographica Section E: Crystallographic Communications

Barnes, C.L.¹  Ruddraraju, K.V.¹  Catalano, M.J.¹  Gates, K.S.¹ 

[1] 125 Chemistry Bldg, University of Missouri-Columbia, MO 65211, USA

关键词: CRYSTAL STRUCTURE;    PURINE-6(9H)-ONE;    2'-DEOXYGUANOSINE;    DEOXY-D-RIBOFURANOSE;    GLYCOSIDIC LINKAGE;    NUCLEOBASE;    HYDROGEN BONDING;   

DOI  :  10.1107/S205698901600517X

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

The title compound, 9-[(2R,4S,5R)-4-hy­droxy-5-(hy­droxy­meth­yl)tetra­hydro­furan-2-yl]-2-{[(2R,4S,5R)-4-meth­oxy-5-(meth­oxy­meth­yl)tetra­hydro­furan-2-yl]amino}-1H-purin-6(9H)-one, C17H25N5O7, crystallizes with two independent mol­ecules (A and B) in the asymmetric unit. In the crystal, the guanosine moieties of mol­ecules A and B are linked by N—H⋯N and O—H⋯N hydrogen-bonding inter­actions, forming ribbons which are stacked to form columns along [100]. These columns are then linked by O—H⋯O hydrogen bonds between the ribose moieties and numerous C—H⋯O inter­actions to complete the three-dimensional structure.

【 授权许可】

CC BY