Crystal structure of 2,4-di-amino-5-(4-hy-droxy-3-meth-oxy-phen-yl)-8,8-dimethyl-6-oxo-6,7,8,9-tetra-hydro-5 H-chromeno[2,3- b]pyridine-3-carbo-nitrile-di-methyl-formamide-water (1/1/1)

Abstract

In the structure of the title compound, C₂₂H₂₂N₄O₄·C₃H₇NO·H₂O, the entire tricyclic system is approximately planar except for the carbon atom bearing the two methyl groups; the meth-oxy-phenyl ring is approximately perpendicular to the tricycle. All seven potential hydrogen-bond donors take part in classical hydrogen bonds. The main mol-ecule and the DMF combine to form broad ribbons parallel to the a axis and roughly parallel to the ab plane; the water mol-ecules connect the residues in the third dimension.

Keywords: chromeno­pyridine; crystal structure; secondary inter­actions; solvate.