(E)-1-(2-Hy­droxy-4,6-dimeth­oxy­phen­yl)-3-(4-meth­oxy­phen­yl)prop-2-en-1-one from Kaempferia rotunda Val.

Abstract

The planar –CH=CHC(=O)– fragment (r.m.s. deviation = 0.074 Å) in the title compound, C18H18O5, connects the planar hy­droxy­dimeth­oxy­phenyl (r.m.s. deviation = 0.039 Å) and meth­oxy­lphenyl (r.m.s. deviation = 0.021 Å) parts. The central fragment forms a dihedral angle of 13.7 (1)° with the hy­droxy­dimeth­oxy­phenyl part and 32.0 (1)° with the meth­oxy­phenyl part. The hy­droxy group forms an intra­molecular hydrogen bond to the carbonyl O atom