5,7-Dihy-droxy-3,6-dimeth-oxy-2-(4-meth-oxy-phen-yl)-4H-chromen-4-one monohydrate.

ABSTRACT: The title compound, C(18)H(16)O(7)·H(2)O, is a flavonoid isolated from Dodonaea viscosa-. The benzopyran ring system of the flavonoid is essentially planar [maximum deviation = 0.025 (2) Å] and inclined at 5.83 (2)° to the attached benzene ring. The water of hydration is involved in extensive hydrogen bonding, assembling the mol-ecules into a supra-molecular network via classical inter-molecular O-H⋯O hydrogen bonding. The crystal structure is further stabilized by π-π stacking inter-actions [centroid-centroid distance between benzene rings = 3.564 (3) Å].

SUBMITTER: Mohammad A 

PROVIDER: S-EPMC3009314 | biostudies-literature | 2010 Oct

REPOSITORIES: biostudies-literature