Study of the Chemical Composition of Schrenk's Fruits and Leaves.

species are widely used in folk medicine in different countries of Asia and Europe, but not all species are studied in-depth. For instance, Schrenk, a plant which grows in Central Asia, Iran, and some parts of China, is little described in articles. Column and thin-layer chromatography methods were used to isolate biologically active substances. From a study of fruits and leaves of Schrenk, a large number of compounds were identified, seven of which were isolated: 3β,23-dihydroxyurs-12-ene (), β-sitosterol (), betulin (), (+)-catechin (), lupeol (), ethyl linoleate (), and ethyl linolenoate (). Their structures were elucidated by H, DEPT and C NMR spectroscopy, mass spectrometry, and GC-MS (gas chromatography-mass spectrometry). The study also identified the structures of organic compounds, including volatile esters and acids. Consequently, comprehensive data were acquired concerning the chemical constitution of said botanical specimen.