Acta Cryst. (2009). E65, o2443  [ doi:10.1107/S1600536809032954 ]

15-Hydroxyethyl-19-isopropyl-5,9-dimethyl-14,16-dioxo-15-azapentacyclo[10.5.2.0^1,10.0^4,9.0^13,17]nonadec-18-ene-5-carboxylic acid

X. Xu, Z. Song, S. Shang, H. Wang and X. Rao

Abstract: The title compound, C₂₆H₃₇NO₅, which was synthesized from monoethanolamine and maleopimaric acid, consists of two fused and unbridged cyclohexane rings. They form a trans ring junction with a chair conformation. The two methyl groups are in axial positions. In the crystal, intermolecular O-HO hydrogen bonds link adjacent molecules into a layer structure. Two C-HO interactions are also present.

Online 12 September 2009

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