Chemistry of Natural Compounds

, Volume 14, Issue 5, pp 504–507 | Cite as

Triterpenes from the leaves ofBetula ermanii

  • G. V. Malinovskaya
  • N. D. Pokhilo
  • V. V. Isakov
  • N. I. Uvarova


From the unsaponifiable fraction of an ethereal extract of the leaves ofBetula ermanii a new triterpene of the dammarane series — 20,24-epoxydammarane-3β,6α,25-trol (II) — and its 6-O-acetyl derivative (I) have been isolated.


Petroleum Ether Saponin Oleanolic Acid Caustic Soda Triol 


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Literature cited

  1. 1.
    N. I. Uvarova, G. V. Malinovskaya, and G. B. Elyakov, Tetrahedron Lett., 4617 (1976).Google Scholar
  2. 2.
    M. Nagai, N. Tanaka, O. Tanaka, and S. Ichikawa, Chem. Pharm. Bull.,21, 2061 (1973).CrossRefGoogle Scholar
  3. 3.
    M. Nagai, N. Tanaka, S. Ichikawa, and O. Tanaka, Tetrahedron Lett., 4239 (1968).Google Scholar
  4. 4.
    J. Asakawa, R. Kasai, K. Yamasaki, and O. Tanaka, Tetrahedron,33, 1935 (1977).CrossRefGoogle Scholar
  5. 5.
    H. Eggert, C. L. Van Antwerp, N. S. Bhacca, and C. Djerassi, J. Org. Chem.,41, 71 (1976).CrossRefGoogle Scholar
  6. 6.
    S. A. Knight, Org. Magn. Res.,6, 603 (1974).CrossRefGoogle Scholar
  7. 7.
    S. Huneck, Chem. Ber.,94, 614, 1151 (1961).CrossRefGoogle Scholar
  8. 8.
    S. Shibata, O. Tanaka, K. Soma, Y. Iida, T. Ando, and H. Nakamura, Tetrahedron Lett., 207 (1965).Google Scholar
  9. 9.
    F. C. Fischer and N. Seiler, Lieb. Ann. Chem.,626, 185 (1959).CrossRefGoogle Scholar

Copyright information

© Plenum Publishing Corporation 1979

Authors and Affiliations

  • G. V. Malinovskaya
  • N. D. Pokhilo
  • V. V. Isakov
  • N. I. Uvarova

There are no affiliations available

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