Abstract
We have investigated the Telekia speciosa (Schreber) Baumg. (Compositae) plant collected in Trabzon (Turkey) in July 29, 1994 at the bottom of the Uzungel and Baleklegel Lakes 2580–2650 m above sea level. Air-dried and triturated plant (800 g) were extracted with ethanol. The combined extracts were evaporated and put on a silicagel column (silica L, Czechoslovakia). The column was eluated with petroleum ether, chloroform, chloroform-methanol (20:1 and 10:1) consistently. Sterols were found in some chloroform eluates. The eluates were combined and subjected to rechromatography on a column, then eluted with the system benzene-chloroform-ethylacetate (5:1:1). As a result of the rechromatography a homogeneous crystal substance identical by thin-layer chromatography with β-sitosterol was isolated in the amount of 136 mg. Acoording to the spectral data, the substance isolated by us is a mixture of two components. The electron impact mass spectrum of the substance showed two ranges of peaks: 1 – M 414, 399, 396, 381, 329, +
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