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Левданский, Владимир Александрович; Левданский, Александр Владимирович (2014)
Publisher: Altai State University
Journal: Khimiia rastitel'nogo syr'ia (Chemistry of plant raw material)
Languages: Russian
Types: Article
Subjects: Chemistry, Q, QD1-999, Science, береста, щелочной гидролиз, гидроксид натрия, гидроксид калия, экстракция, изопропанол, бутанол, изобутанол, бетулин., birch bark, alkaline hydrolysis, sodium hydroxide, potassium hydroxide, extraction, isopropanol, butanol, isobutanol, betulin.

Classified by OpenAIRE into

mesheuropmc: complex mixtures

It was established, that after hydrolysis of birch bark in water solution of alkali in the presence of isopropanol, butanol and isobutanol two layers were formed. The top layer contained betulin dissolved in alcohol, and the bottom layer contained a water-soluble alkali and its hydrolysis products of bark. Betulin was isolated by the separation and concentration of the alcohol layer. The structure of betulin was confirmed by methods of IR and NMR spectroscopy.

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    • 1. Tolstikov G.A., Flekhter O.B., Shul'ts E.E., Baltina L.A., Tolstikov A.G. Khimiia v interesakh ustoichivogo razvitiia, 2005, no. 13, pp. 1-30. (in Russ.).
    • 2. Kislitsin A.N. Khimiia drevesiny, 1994, no. 3, pp. 3-28. (in Russ.).
    • 3. Eckerman Ch., Ekman R. Paperi ja Puu - Pap. och Tra., 1985, no. 3, pp. 100-106.
    • 4. Patent 2206572 (RU). 2003. (in Russ.).
    • 5. Patent 2192879 (RU). 2002. (in Russ.).
    • 6. Patent 2138508 (RU). 1999. (in Russ.).
    • 7. Patent 2184120 (RU). 2002. (in Russ.).
    • 8. Patent 2172178 (RU). 2001. (in Russ.).
    • 9. Patent 2131882 (RU). 1999. (in Russ.).
    • 10. Patent 2340624 (RU). 2008. (in Russ.).
    • 11. Kuznetsov B.N., Levdanskii V.A., Polezhaeva N.I. Khimiia rastitel'nogo syr'ia, 2004, no. 2, pp. 21-24. (in Russ.).
    • 12. Patent 2458934 (RU). 2012. (in Russ.).
    • 13. Era V., Jaaskelainen P., Ukkonen K. J. Amer. Oil Chem. Soc., 1981, vol. 58, pp. 20-23.
    • 14. Odinokova L.E., Oshitok G.I., Denisenko V.A., Anufriev V.F., Tolkach A.M., Uvarova N.I. Khimiia prirodnykh soedinenii, 1984, no. 2, pp. 182-187. (in Russ.).
    • 15. Sholichin, M., Yamasaki K., Kasai R., Tanaka O. Chem. Pharm. Bull., 1980, vol. 28, no. 3, pp. 10006-10008.
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