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• W2460423066 abstract "Eight new and 10 known compounds were isolated from an organic extract of the bulbs of Bellevalia eigii as part of a search for anticancer leads from native plants of Jordan. Of these, the series of 16 homoisoflavonoids (1-16) comprise the seven new analogues 7-O-methyl-3'-hydroxy-3,9-dihydropunctatin (3), 6-hydroxy-7-O-methyl-3,9-dihydropunctatin (6), 7,4'-di-O-methyl-3'-hydroxy-3,9-dihydropunctatin (9), 7-O-methylpunctatin (10), 7-O-methyl-3'-hydroxypunctatin (13), 5-hydroxy-7,8-dimethoxychroman-4-one (14), and 7-O-methyl-8-demethoxy-3-hydroxy-3,9-dihydropunctatin (15). The known ferulic acid-derived acrylamide (17) and the new methylthioacrylate bellegimycin (18) are also reported. The structures were elucidated using a set of spectroscopic and spectrometric techniques; the absolute configurations of compounds 1-9, 15, and 16 were determined using ECD spectroscopy, while a modified Mosher's ester method was used for compound 18. Optical rotation data for the known compounds 1, 2, and 8 are reported here for the first time. The cytotoxic activities of all compounds were evaluated using the MDA-MB-435 (melanoma) and HT-29 (colon) cancer cell lines. Compounds 4 and 9 were the most potent on the latter cell line, with IC50 values of 1.0 and 1.1 μM, respectively. Compounds 1-18 were assessed for antimicrobial activity using a collection of bacteria and fungi; compounds 4 and 12 showed promising activity against the bacterium Mycobacterium smegmatis with MIC values of 17 and 24 μg/mL, respectively." @default.
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• W2460423066 date "2015-07-06" @default.
• W2460423066 modified "2023-09-27" @default.
• W2460423066 title "Cytotoxic Homoisoflavones from the Bulbs of <i>Bellevalia eigii</i>" @default.
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• W2460423066 doi "https://doi.org/10.1021/acs.jnatprod.5b00357" @default.
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