isolation of the furocoumarins ( psoralens ) bergapten , isobergapten , sphondin , isopimpinellin and pimpinellin from the umbilliferous plant heracleum laciniatum was carried out by column chromatography , and the structure and absorption spectra for the 5 furocoumarins isolated are described .
C0033858
psoralens
C0016859
furocoumarins