7-Isopentenyloxycoumarin (1) was isolated from Heracleum lanatum MICHX. (Umbelliferae). Compound 1 inhibited phospholipid metabolism and Epstein-Barr virus activation caused by a potent tumor promoter. In an in vivo experiment, topical application of 1 suppressed skin-tumor-formation induced by
Four hitherto unknown prenylated coumarins, namely 6″-O-β-D-apiofuranosylapterin (1), 4'-O-isobutyroylpeguangxienin (2), 6-(3-methyl-2-oxobutyroyl)-7-methoxycoumarin (3), and 6-hydroxycoumurrayin (4), were isolated from the ethanol extract of Heracleum stenopterum, Peucedanum praeruptorum, Clausena
Methanol extracts of 36 samples of 21 Umbelliferae plants were screened for polyacetylenic compounds using the ELISA for panaxytriol, and their antiproliferative activity was checked by MTT assay using the tumor cell lines MK-1, HeLa and B16F10. The presence of antiproliferative polyacetylenes was
The essential oil obtained from the fruits of hogweed (Heracleum sphondylium subsp. ternatum) growing in central Apennines (Italy) was analysed for chemical composition by gas chromatographic-flame ionisation detector (GC-FID) and gas chromatography-mass spectrometry (GC-MS). The oil was composed
In the present investigation, the anti-inflammatory activity of isolated bergapten from hydroalcoholic extract of Heracleum nepalense root was evaluated in vitro using human peripheral blood mononuclear cells (PBMCs). Bergapten exhibited significant inhibition of the production of pro-inflammatory
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