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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Antiproliferative constituents in plants 10. Flavones from the leaves of Lantana montevidensis Briq. and consideration of structure-activity relationship.

The flavonoid fraction from the leaves of Lantana montevidensis Briq. (Verbenaceae) showed antiproliferative activity against human gastric adenocarcinoma ( MK-1, GI50: 12 microg/ml), human uterus carcinoma (HeLa, 5 microg/ml), and murine melanoma (B16F10, 5 microg/ml) cells in vitro. Bioactivity-guided chemical investigation of the fraction has resulted in the isolation of apigenin (10) and ten 5,6,7-oxygenated flavones: cirsilineol (1), eupatorin (2), 5,4'-dihydroxy-6,7,3',5'-tetramethoxyflavone (3), 5,6-dihydroxy-7,3',4'-trimethoxyflavone (4), 5,6,4'-trihydroxy-7,3',5'-trimethoxyflavone (5), 5,6,3'-trihydroxy-7,4'-dimethoxyflavone (6), 5,3',4'-trihydroxy-6,7,5'-trimethoxyflavone (7), cirsiliol (8), hispidulin (9), and eupafolin (11). Antiproliferative activity of the isolated flavones, some other related flavones (luteolin, baicalein, 6-hydroxyluteolin, pectolinarigenin, jaceosidin, desmethoxycentaureidin, eupatilin, and chrysin) from other plant materials, and synthetic 6- and 7-methoxyflavones was evaluated, and the structure-activity relationships were examined.[1]

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