Crystal structure of 4-nitro­phenyl 6-O-ethyl-β-d-galacto­pyran­oside monohydrate

Acta Crystallographica Section E: Crystallographic Communications

Speziali, N.L.²  Silva, B.L.⁶  Alves, R.J.^1,11 

[1] Avenida AntôFaculdade de FarmáInstituto de CiêUniversidade Federal de Minas Gerais –Departamento de FíDepartamento de Produtos Farmacêcia –ncias Exatas –nio Carlos 6627, Belo Horizonte MG, 31.270-901, Brazil;sica –uticos –

关键词: CRYSTAL STRUCTURE;    D-GALACTOSE;    NITROPHENYL GALACTOPYRANOSIDES;    PYRANOID RING;    HYDROGEN BONDING;   

DOI  :  10.1107/S2056989017004595

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

The synthesis and crystal structure of the title compound, C14H19NO8·H2O, prepared in three steps from 6-O-ethyl-1,2;3,4-di-O-iso­propyl­idene-α-d-galacto­pyran­ose using protecting-group strategies employed in carbohydrate chemistry, is reported. The asymmetric unit consists of a single galactoside mol­ecule, in which the pyran­oid ring has a 4C1 conformation and the 4-nitro­phenyl moiety is essentially planar. In the crystal, each carbohydrate is surrounded by other d-galactose residues and water mol­ecules, linked by O—H⋯O hydrogen bonds involving all hy­droxy groups, giving a two-dimensional substructure lying parallel to (100) and extended into three dimensions by C—H⋯O inter­actions.

【 授权许可】

CC BY