Acta Cryst. (2005). E61, o1921-o1923  [ doi:10.1107/S1600536805016429 ]

Incaniline (isoargentatin A) from Parthenium argentatum

S. Hernández-Ortega, H. Parra Delgado and M. Martínez

Abstract: The title compound, (20S,24R)-incanilin, C₃₀H₄₈O₄, contains three six-membered rings and two five-membered rings. The six-membered ring B adopts a distorted envelope conformation and five-membered ring D adopts a twist conformation. In the crystal structure, the molecules exist as O-HO hydrogen-bonded dimers.

Online 31 May 2005

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