Short Communication |
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Chemical constituents from the aerial parts of Euphorbia sikkimensis and their bioactivities |
Da-Song YANGa,b,c, Wei-Bing PENGd, Zi-Lei LIa,b,c, Xue WANGd, Jian-Guo WEIa,b,c, Ke-Chun LIUd, Yong-Ping YANGa,b,c, Xiao-Li LIa,b,c |
a Key Laboratory of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; b Plant Germplasm and Genomics Center, the Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; c Institute of Tibetan Plateau Research at Kunming, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; d Biology Institute of Shandong Academy of Sciences, Jinan 250014, China |
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Abstract Phytochemical investigation of the aerial parts of Euphorbia sikkimensis led to the isolation of one new diterpenoids, named sikkimenoid E (1), together with thirteen other known compounds (2-14). Their structures were established by means of spectroscopic methods. Compound 2 was identified to be a trinortriterpenoid, and derived for the first time from a natural source. In this paper we reveal for the first time its comprehensive spectral data and NMR spectral assignment. Compound 4 showed antiangiogenic activity with an IC50 value of 5.66 μM in a zebrafish model, and compounds 5 and 6 exhibited cytotoxicity toward A549 cell line with IC50 values of 12.12 and 6.45 μM, respectively.
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Keywords
Euphorbia sikkimensis
ingenol
trinortriterpenoid
tocopherol derivatives
bioactivities
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Fund:This work was supported by the Basic Research Project of the Ministry of Science and Technology of China (2012FY110300), MOST grant (2008BAD98B06). |
Issue Date: 11 February 2018
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