Abstract
The title compound, C20H28O3, was isolated during our investigation into the chemical composition and pharmacological activity of Centipeda cunninghamii (DC.) A. Braun & Asch. (Asteraceae). The enantiopure compound, a diterpene with a carbon skeleton, is composed of three six- and one five-membered rings in chair, twist-boat, half-chair and envelope conformations, respectively. Each molecule makes one intra- and one intermolecular O—H⋯O hydrogen bond in the crystal lattice, forming hydrogen-bonded chains along [010]. The absolute configuration of the compound was assigned on the basis of optical rotation measurements.
Highlights
Crystal dataLeacha a Centre for Phytochemistry and Pharmacology, Southern Cross University, Lismore
The title compound, C20H28O3, was isolated during our investigation into the chemical composition and pharmacological activity of Centipeda cunninghamii (DC.) A
The absolute configuration of the compound was assigned on the basis of optical rotation measurements
Summary
Leacha a Centre for Phytochemistry and Pharmacology, Southern Cross University, Lismore. R factor = 0.044; wR factor = 0.112; data-to-parameter ratio = 7.3. The title compound, C20H28O3, was isolated during our investigation into the chemical composition and pharmacological activity of Centipeda cunninghamii (DC.) A. The enantiopure compound, a diterpene with a carbon skeleton, is composed of three six- and one fivemembered rings in chair, twist-boat, half-chair and envelope conformations, respectively. Each molecule makes one intraand one intermolecular O—H O hydrogen bond in the crystal lattice, forming hydrogen-bonded chains along [010]. The absolute configuration of the compound was assigned on the basis of optical rotation measurements
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