Research Article: 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)

Date Published: June 01, 2011

Publisher: International Union of Crystallography

Author(s): Masoumeh Hosseinzadeh, Mat Ropi Mukhtar, Jamaludin Mohamad, Khalijah Awang, Seik Weng Ng.

http://doi.org/10.1107/S1600536811019386

Abstract

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.

Partial Text

For the spectroscopic characterization of linderone and methyl linderone isolated from Lindera pipericarpa, see: Kiang et al. (1962 ▶). For the crystal structure of methyl linderone isolated from Lindera poliantha, see: Syah et al. (2005 ▶).

Source:

http://doi.org/10.1107/S1600536811019386