par Nguyen, Anh Tho ;Fontaine, Jeanine ;Malonne, Hugues ;Duez, Pierre
Référence Phytochemistry, 67, 19, page (2159-2163)
Publication Publié, 2006-10
Article révisé par les pairs
Résumé : From cytotoxic extracts of the roots of Disporopsis aspera Engl. (Liliaceae) a homoisoflavanone, disporopsin (3-(2′,4′-dihydroxy-benzyl)-5,7-dihydroxy-chroman-4-one) (1) and three rare methyl-homoisoflavanones, 3-(4′-hydroxy-benzyl)-5,7-dihydroxy-6-methyl-chroman-4-one (2), 3-(4′-hydroxy-benzyl)-5,7-dihydroxy-6,8-dimethyl-chroman-4-one (3) and 3-(4′-hydroxy-benzyl)-5,7-dihydroxy-6-methyl-8-methoxy-chroman-4- one (4) along with five other known compounds, N-trans-feruloyl tyramine (5), adenine (6), 5-(hydroxymethyl)-2-furfural (7), β-sitosterol (8) and β-sitosteryl glucopyranoside (9) were isolated. The structures of compounds 1-2 were elucidated by spectral data (1, 2-D NMR and EIMS). The four homoisoflavanones (1-4) were found to be cytotoxic against a series of human cancer cell lines (HCT15, T24S, MCF7, Bowes, A549 and K562) with IC50 ranging from 15 to 200 μM. Possible biosynthesis routes for homoisoflavonoids (1-4) are discussed. © 2006 Elsevier Ltd. All rights reserved.