1-(2,6-Dihydroxy-4-methoxyphenyl)-3-phenylpropan-1-one

Abstract

The title compound, C16H16O4, a dihydrochalcone, was isolated from the rhizomes of Etlingera littoralis. The molecule is twisted with a dihedral angle of 71.69 (6)° between the two aromatic rings. The propanone unit makes dihedral angles of 4.07 (6) and 73.56 (7)°, respectively, with the 2,6-dihydroxy-4-methoxyphenyl and phenyl rings. The methoxy group is approximately coplanar with the attached benzene ring with a dihedral angle of 1.74 (10)°. An intramolecular O - H⋯O hydrogen bond generates an S(6) ring motif. In the crystal, intermolecular O - H⋯O hydrogen bonds link the molecules into chains along [201]. A π-π inter-action with a centroid-centroid distance of 3.5185 (6) Å is also observed. © 2010.