| Literature DB >> 7964782 |
J J Lichius1, O Thoison, A Montagnac, M Païs, F Guéritte-Voegelein, T Sévenet, J P Cosson, A H Hadi.
Abstract
Bioassay-guided fractionation of the extracts of Zieridium pseudobtusifolium and Acronychia porteri led to the isolation of 5,3'-dihydroxy-3,6,7,8,4'-pentamethoxyflavone [1], which showed activity against (KB) human nasopharyngeal carcinoma cells (IC50 0.04 micrograms/ml) and inhibited tubulin assembly into microtubules (IC50 12 microM). Two other known flavonols, digicitrin [2] and 5-hydroxy-3,6,7,8,3',4'-hexamethoxyflavone [5], were also isolated together with three new ones, 3-O-demethyldigicitrin [3], 3,5,3'-trihydroxy-6,7,8,4'-tetramethoxyflavone [4], and 3,5-dihydroxy-6,7,8,3',4'-pentamethoxyflavone [6]. All of these flavonols showed cytotoxic activity against KB cells.Entities:
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Year: 1994 PMID: 7964782 DOI: 10.1021/np50109a024
Source DB: PubMed Journal: J Nat Prod ISSN: 0163-3864 Impact factor: 4.050