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Chemistry and Biodiversity 2017-Feb

Cytotoxic and Anti-inflammatory Sesquiterpenes from Ainsliaea henryi.

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Ren-Tao Zeng
Xue-Yun Dong
Xing Fang
Niao Yang
Zhi-Ran Shi
Zhi-Guo Zhuo
Yun-Heng Shen
Wei-Dong Zhang

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Three new sesquiterpenoids, 4α-hydroxyeudesm-11(13)-en-12-yl 3-methylbutanoate (1), diaspanolide E (2), and (13α)-germacra-1(10),4-dien-12,8α-olid-15-oic acid (3), along with eight known sesquiterpenoids (4 - 11), were isolated from the aerial parts of Ainsliaea henryi. The chemical structures of compounds 1 - 3 were elucidated by spectroscopic analysis (1D-, 2D-NMR, MS and HR/MS). All isolates were evaluated for their inhibitory activities against nitric oxide (NO) production in lipopolysaccharide-induced RAW264.7 macrophage cells. Compound 10 exhibited significantly inhibition against NO release with an IC50 value of 6.54 ± 0.16 μm. Also, all isolated compounds were tested for cytotoxicity against three human tumor cell lines A549, MGC803, and HCT116, among which compound 5 significantly inhibited the proliferation of MGC803 cell lines with an IC50 value of 2.2 ± 0.2 μm.

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