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Note | Regular issue | Vol 53, No. 10, 2000, pp.2225-2232
Published online, 1st January, 1970
DOI: 10.3987/COM-00-8973
Prieurianin-Type Tetranortriterpenoids from the Bark of Dysoxylum hainanense

Xiao-Dong Luo, Shao-Hua Wu. Xiao-Sheng Yang, Rong-Wei Teng, Yun-Bao Ma, Da-Gang Wu,* Xiao-Jiang Hao, Yang Lu, Xu-Ying Liu, and Qi-Tai Zheng

*Laboratory of Phytochemistry, Kunming Institute of Botany, The Chinese Academy of Sciences, Kunming, Yunnan 650204, China


From the ethanolic extract of the bark of Dysoxylum hainanense Merr., three new seco-tetranortriterpenoids structurally related to prieurianin, dysoxylumins A (1), B (2) and C (3) were isolated. Their structures were elucidated on the basis of 1D and 2D NMR techniques. The structure and stereochemistry of compound 1 were demonstrated by X-Ray crystallography.