Crystal structure of racemic 2-[(β-arabinopyranosyl)sulfanyl]-4,6-diphenylpyridine-3-carbonitrile

In the racemic title compound, C 23 H 20 N 2 O 4 S, the sulfur atom is attached equatorially to the sugar ring with unequal S—C bonds, viz .: S—C s = 1.808 (2) and S—C p = 1.770 (2) Å (s = sugar, p = pyridyl). The dihedral angles between the pyridine ring and its attached phenyl groups are 42.24 (8) and 6.37 (14)°. In the crystal, a system of classical O—H...O and O—H...(O,O) hydrogen bonds links the molecules to form tube-like assemblies propagating parallel to the c -axis direction. Weak C—H...N interactions are also observed.