Acta Cryst. (2003). E59, o1864-o1866  [ doi:10.1107/S1600536803024838 ]

Absolute configuration of 3-feruloyltaraxerol dichloromethane solvate

S. Chantrapromma, H.-K. Fun, I. A. Razak, S. Laphookhieo and C. Karalai

Abstract: The title compound, C₄₀H₅₈O₄.CH₂Cl₂, was isolated for the first time from Bruguiera cylindrica (Rhizophoraceae), and for the first time from natural product resources. The structure contains five fused six-membered rings, with two rings in chair, two in twist-boat and one in a slightly twisted boat conformation. The D and E rings are cis-fused. The feruloyl substituent group is axially attached to the skeleton. O-HO hydrogen bonds and C-HO interactions are observed in the structure. The absolute configuration was established on the basis of anomalous scattering effects of the solvent.

Online 8 November 2003

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