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Limonoids and triterpenoids from the twigs and leaves of Dysoxylum hainanense |
Wen-Xing LIUa,b, Gui-Hua TANGa,b, Hong-Ping HEa, Yu ZHANGa, Shun-Lin LIa, Xiao-Jiang HAOa |
a State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China b Graduate University of Chinese Academy of Sciences, Beijing 100049, China |
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Abstract Four new limonoids, dysohainanins A-D(1-4), and two new triterpenoids, dysohainanins E and F(5 and 6), together with seven known ones were isolated from the twigs and leaves of Dysoxylum hainanense Merr. The structures of the new compounds were determined by a variety of spectroscopic methods. The cytotoxic activities of these compounds were evaluated, and the known compound ent-19-nor-4, 16, 18-trihydroxy-8(14)-pomaren-15-one(13) showed in vitro cytotoxicity against HL-60, A-549, MCF-7, and SW480 cells, with IC50 values of 24.3, 28.1, 30.7, and 22.5 μM, respectively. Compounds 2 and 3 were tested their insecticidal activities using brine shrimp and both of them were inactive.
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Keywords
Dysoxylum hainanense
Meliaceae
limonoids
triterpenoids
cytotoxicity
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Fund:This work was supported by grants from the Ministry of Science and Technology(2009CB522300 and 2009CB940900). |
Issue Date: 11 February 2018
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