A study of the coumarin composition of the roots ofPrangos uloptera


The roots (12 kg) were exhaustively extracted with chloroform. The solvent was distilled off in vacuum, and the residue (670 g of resin) was chromatographed on a column of alumina (activity grade III). Elution was carried out with petroleum ether, a mixture of petroleum ether and chloroform, chloroform, and methanol. The reehromatography of the crystalline… (More)
DOI: 10.1007/BF00569818