期刊
ORGANIC LETTERS
卷 16, 期 5, 页码 1370-1373出版社
AMER CHEMICAL SOC
DOI: 10.1021/ol5001186
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资金
- NSFC [81373290, 81274150]
- CAS [KSCX2-EW-Q-10]
- NSFYP [2012FB178]
- SRF for ROCS, SEM
Six unique nortriterpenoids, lancifonins A-F (1-6), were isolated from Schisandra lancifolia. Their absolute configurations were determined by X-ray diffraction and ECD calculation. The conformational analysis of 1 was performed due to the unanticipated changes of Cotton effects in its ECD spectrum. Compounds 5 and 6 possess a unique 7/7 fused carbocyclic core with an internal ester bridge between C-9 and C-14, and 5 exhibited protective activity against H2O2-induced oxidative damage on Caco-2 cells.
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