A new secoiridoid named chinensisol (1) along with twenty known compounds were isolated from the 95% ethanol extract of Cortex fraxini. Their structures were elucidated on the basis of NMR, MS, IR and UV spectral evidences. The quinone reductase (QR) inducing activities of the compounds were evaluated and the results showed that compounds 1, 9 and 14 had moderate QR inducing activities with CD values (concentration required to double the specific activity of QR) of 72.4 ± 7.7, 34.3 ± 3.3 and 42.0 ± 0.4 μM respectively.
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| http://dx.doi.org/10.1016/j.fitote.2010.05.003 | DOI Listing |
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