The epigeal part of Sedum caucasic~ (Grossh.) A. Bor. (Caucasian stonecrop), endemic to the Caucasus [i] was extracted with four portions of ethanol, and the extracts were worked up as described previously [2]. By two-dimensional paper chromatography, not fewer than twenty phenolic compounds, predominantly represented by flavonoids, were detected in the extract obtained. Chromatography of the ethyl acetate fractions on columns of Kapron [nylon-6] led to the isolation of four substances in the individual state (I-IV). When qualitative reactions and spectral studies in the UV region with ionizing and complex-forming reagents [3, 4] were performed, it was established that one of these substances isolated was a hydroxycoumarin (I) and three (II-IV) were flavonoids. p. 30.
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