Abstract
The title compound, 14β-acetoxy-7α-hydroxy-ent-kaur-16-ene-3,15-dione or glaucocalyxin B, C22H30O5, a natural ent-kaurane diterpenoid, is composed of four rings with the expected cis and trans ring junctions. In the crystal structure, there are two molecules in the asymmetric unit related by a noncrystallographic twofold screw axis, and ring A is disordered [ratio occupancies 0.829 (19):0.171 (19)], such that both chair and boat conformations are present, but with the boat conformation as the major component. In the crystal, molecules are linked by intermolecular O—H⋯O hydrogen bonds.
Highlights
Crystal dataLiua a School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, People’s Republic of China, and bDepartment of Science and Technology, Xinxiang
The title compound, 14-acetoxy-7-hydroxy-ent-kaur-16ene-3,15-dione or glaucocalyxin B, C22H30O5, a natural entkaurane diterpenoid, is composed of four rings with the expected cis and trans ring junctions
Molecules are linked by intermolecular O—H O hydrogen bonds
Summary
Liua a School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, People’s Republic of China, and bDepartment of Science and Technology, Xinxiang.
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