furocoumarins from heracleum rawianum in iran

the species heracleum rawianum belongs to apiaceae, is one of the native species in iran. the leaves and fruits of heracleum rawianium are used traditionally in iran as flavouring agent and spice for food. in the present work, the extraction of aerial parts of this plant with acetone by maceration is described. our phytochemical analysis of the chloroform extract of the aerial parts of this plant afforded three condensed furocoumarins. furocoumarins such as angelicin (in remarkable amount), allobergapten and sphondin were isolated and identified by ir, 1h-nmr, 13c-nmr and dept-135 spectroscopic data, ms spectrometery and camparison with the literature. to the best of our knowledge, no phytochemical investigations on this species have been reported.