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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 lansium, and Murraya paniculata, respectively. Their chemical structures were established on the basis of extensive spectroscopic analysis. Compound 2 exhibited in vitro cytotoxic activity against five human cancer cell lines (HL-60, A-549, SMMC-7721, MCF-7, and SW-480) with IC50 values ranging from 15.9 to 23.2 μM.Graphical Abstract Electronic supplementary materialThe online version of this article (doi:10.1007/s13659-016-0107-5) contains supplementary material, which is available to authorized users.

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