Acta Cryst. (2005). E61, o854-o856  [ doi:10.1107/S1600536805005994 ]

A clerodane diterpenoid from Pulicaria wightiana

K. Ravikumar, B. Sridhar, B. Das and K. Venkateswarlu

Abstract: The structure of the clerodane diterpene C₂₁H₃₀O₅, with modest antibacterial activity and isolated from the plant Pulicaria wightiana, was established to be methyl 6-hydroxy-3,13-clerodadien-15,16-olid-18-oate. The fused six-membered rings of the decalin system have sofa and chair conformations. The furanone side chain is in an antiperiplanar conformation. The molecules in the crystal structure are stabilized by an intramolecular O-HO hydrogen bond and a chain of intermolecular C-HO interactions.

Online 4 March 2005

Copyright © International Union of Crystallography
IUCr Webmaster