Whole-mol­ecule disordered (E)-2-(1-hy­droxy-3-phenylprop-2-en-1-yl­idene)-4,5-dimeth­oxycyclo­pent-4-ene-1,3-dione isolated from Lindera oxyphylla (Lauraceae)

摘要

In the mol­ecule of the title compound, C16H14O5, all non-H atoms are approximately co-planar [maximum atomic deviation = 0.064 (5) Å]. The hy­droxy group is a hydrogen-bond donor to a carbonyl O atom. Weak intermolecular C—H⋯O hydrogen bonding is present in the crystal structure. The crystal structure is ’whole-mol­ecule disordered’ about an axis that runs approximately along the length of the mol­ecule; the occupancy of the two disorder components was set as exactly 0.5. An intra­molecular O—-H⋯O hydrogen bond exists in each component.