Journal
JOURNAL OF NATURAL PRODUCTS
Volume 80, Issue 12, Pages 3180-3186Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jnatprod.7b00494
Keywords
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Funding
- Agence Nationale de la Recherche (ANR) [ANR-10-JCJC-7021]
- ARC Foundation
- Labex Program [ANR-10-LABX-25-01]
- ICSN
- CNRS
- Malaysian Ministry of Higher Education [UM.C/HIR/MOHE/SC/37]
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Four new compounds, (+)- and (-)-ecarlottone (1), (+/-)-fislatifolione (5), (+/-)-isofislatifolione (6), and (+/-)-fislatifolic acid (7), and the known desmethoxyyangonin (2), didymocarpin-A (3), and dehydrodidymocarpin-A (4) were isolated from the stem bark of Fissistigma latifolium, by means of bioassay-guided purification using an in vitro affinity displacement assay based on the modulation of Bcl-xL/Bak and Mcl-1/Bid interactions. The structures of the new compounds were elucidated by NMR spectroscopic data analysis, and the absolute configurations of compounds (+)-1 and (-)-1 were assigned by comparison of experimental and computed ECD spectra. (-)-Ecarlottone 1 exhibited a potent antagonistic activity on both protein-protein associations with Ki values of 4.8 mu M for Bcl-xL/Bak and 2.4 mu M for Mcl-1/Bid.
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