Journal
JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH
Volume 19, Issue 4, Pages 416-422Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10286020.2017.1307188
Keywords
Syringa pinnatifolia; norlignan; noralashinol B; noralashinol C; calculated ECD; cytotoxicity
Funding
- National Natural Science Foundation of China [81473426, 81303309]
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One new norlignan, noralashinol B (1), and one new natural product, proposed noralashinol C (2), were isolated in a continuous phytochemical investigation on the stem barks of Syringa pinnatifolia. Their structures were elucidated based on the analysis of spectroscopic data, including mass spectrometry and 1D and 2D NMR spectroscopies, and the absolute configuration was determined by experimental and calculated electronic circular dichroism. Compound 1 showed a weak cytotoxicity against HepG2 hepatic cancer cells with its IC50 value of 31.7M. Furthermore, 1 induced apoptosis of HepG2 cells in a dose-dependent manner at concentrations of 0-80.0 mu M. [GRAPHICS] .
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