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Abstract
The title compound {systematic name: 5,6,10-trihydroxy-7-isopropyl-1,1,4a-trimethyl-2,3,4,4a-tetrahydrophenanthren-9(1H)-one}, C20H26O4, is a diterpenoid which was isolated from the roots of Premna obtusifolia. The molecule has three fused six-membered rings; the cyclohexane ring is in a twisted-boat conformation and the cyclohexene ring adopts a sofa form. Intramolecular O—H⋯O hydrogen bonds generate two S(5) ring motifs. In the crystal, molecules are linked into infinite one-dimensional chains along the [001] direction by O—H⋯O hydrogen bonds and weak C—H⋯O interactions.
Highlights
Structure ReportsHoong-Kun Funb} and Chatchanok Karalaia a Crystal Materials Research Unit, Department of Chemistry, Faculty of Science, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand, and bX-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia R factor = 0.039; wR factor = 0.114; data-to-parameter ratio = 16.9
The title compound {systematic name: 5,6,10-trihydroxy-7-isopropyl-1,1,4a-trimethyl-2,3,4,4a-tetrahydrophenanthren9(1H)-one}, C20H26O4, is a diterpenoid which was isolated from the roots of Premna obtusifolia
The molecule has three fused six-membered rings; the cyclohexane ring is in a twistedboat conformation and the cyclohexene ring adopts a sofa form
Summary
Hoong-Kun Funb} and Chatchanok Karalaia a Crystal Materials Research Unit, Department of Chemistry, Faculty of Science, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand, and bX-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia R factor = 0.039; wR factor = 0.114; data-to-parameter ratio = 16.9.
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