Natural Product Sciences

  • 제17권3호
  • /
  • Pages.245-249
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  • 2011
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  • 1226-3907(pISSN)
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  • 2288-9027(eISSN)
한국생약학회 (The Korean Society of Pharmacognosy)
권호 표지

Topoisomerase I and II Inhibitory Activities and Cytotoxic Constituents from the Barks of Tilia amurnesis

  • 투고 : 2011.06.02
  • 심사 : 2011.08.23
  • 발행 : 2011.09.30
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초록

Eight compounds, squalene (1), friedelin (2), ${\beta}$-sitosterol (3), ${\beta}$-sitosterol-3-O-glucoside (4), ${\alpha}$-tocopherol (5), betulinic acid (6), trilinolein (7) and 1-O-(9Z,12Z-Octadecadienoyl)-3-nonadecanoyl glycerol (8), were isolated from the barks of Tilia amurensis. Their chemical structures were identified by comparing their physicochemical and spectral data with those published in the literature. These isolated compounds were examined for their inhibitory activities against topoisomerase I and II. Compound 7 showed significant inhibition of DNA topoisomerase I and II activities, with percent decreases in activity of 87 and 95%, respectively at a concentration of $100\;{\mu}M$. Compound 6 exhibited cytotoxicity against the human colon adenocarcinoma cell line (HT-29), the human breast adenocarcinoma cell line (MCF-7) and the human liver hepatoblastoma cell line (HepG-2), with $IC_{50}$ values of 20, 59 and $16\;{\mu}M$, respectively.

키워드

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