Title of article :
Crystal structure of 4-nitrophenyl 6-O-ethyl-β-D-galactopyranoside monohydrate
Author/Authors :
Leonardo Silva, Bruno Departamento de Produtos Farmacêuticos – Faculdade de Farmácia – Universidade Federal de Minas Gerais ,Brazil , Alves, Ricardo José Departamento de Produtos Farmacêuticos – Faculdade de Farmácia – Universidade Federal de Minas Gerais ,Brazil , Speziali, Nivaldo Lúcio Departamento de Física – Instituto de Ciências Exatas – Universidade Federal de Minas Gerais – Avenida Antônio Carlos 6627, Brazil
Abstract :
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.
Keywords :
crystal structure , hydrogen bonding , pyranoid ring , nitrophenyl galactopyranosides , D-galactose
Journal title :
Acta Crystallographica Section E: Crystallographic Communications
