Phytochemical studies on the EtOH extract of Drypetes hainanensis leaves and stems afforded a new friedelane-type triterpene named 4β-hydroxy-23-nor-friedel-3-one (1), along with seven known compounds: friedelin (2), diethylhexyl phthalate (3), α-amyrin (4), β-amyrin (5), lupeol (6), friedelane-3,7-dione (7) and β-sitosterol (8). Their structures were established on the basis of spectroscopic analysis and chemical evidence. The cytotoxicity of the selected compounds 1, 2, and 7 were evaluated in vitro against three human cancer cell lines (HL-60, BEL-7402, and A549). Compounds 1 and 7 showed moderate cytotoxic activity.
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Acknowledgment
The authors acknowledge the technical assistance of the Analytical and Testing Center of Hainan University. This article is supported by the National Natural Science Foundation of Hainan (Grant No. 309001) and the State key subject of Botany at Hainan University (071001).
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Published in Khimiya Prirodnykh Soedinenii, No. 1, January–February, 2014, pp. 84–86.
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Chen, D., Cheng, X., Sun, Y. et al. A New Friedelane Triterpenoid Possessing Cytotoxicity from the Leaves and Stems OF Drypetes hainanensis . Chem Nat Compd 50, 93–96 (2014). https://doi.org/10.1007/s10600-014-0874-3
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DOI: https://doi.org/10.1007/s10600-014-0874-3