期刊
PHYTOCHEMISTRY
卷 135, 期 -, 页码 135-143出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.phytochem.2016.12.009
关键词
Uvaria siamensis; Annonaceae; Dimeric chalcone; Antimycobacterial; Antiplasmodial; Cytotoxicity
资金
- Office of the National Research Council of Thailand
- Phuket Rajabhat University
Four dimeric chalcone derivatives, 8 '',9 ''-dihydrowelwitschin H, uvarins A-C, a naphthalene derivative, 2-hydroxy-3-methoxy-6-(4'- hydroxyphenyl)naphthalene, and the known dimeric chalcones, dependensin and welwitschin E, flavonoids, a cyclohexane oxide derivative, an aromatic aldehyde were isolated from the roots of Uvaria siamensis (Annonaceae). The structures of the compounds were elucidated by spectroscopic analysis, as well as by comparison with literature data. The isolated compounds with a sufficient amount for biological assays were evaluated for their antimalarial, antimycobacterial, and cytotoxic activities. The dimeric chalcones 8 '',9 ''-dihydrowelwitschin H, uvarins B and C, dependensin and welwitschin E showed strong antiplasmodial activity with IC50 values of 3.10, 3.02, 3.09, 4.21 and 3.99 mu g/mL, respectively. A possible biosynthesis pathway of the dimeric chalcones is discussed. (C) 2016 Elsevier Ltd. All rights reserved.
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