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Chemistry of Natural Compounds

, Volume 27, Issue 4, pp 444–449 | Cite as

Triterpenoids from Abies species

XII. (24Z)- and (24E)-8(14 → 13)-abeo-17,13-friedo-lanosta-8,14(30),24-triene-3,23-dion-26-oic acids — New triterpenoids from the needles of the Siberian fir
  • V. A. Raldugin
  • M. M. Shakirov
  • T. V. Leibyuk
  • S. A. Shevtsov
Article

Abstract

From an acid fraction of an ethereal extract of Siberian fir needles two new stereoisomeric acids, the molecules of which have a modified lanostane carbon skeleton, have been isolated in the form of methyl esters. The structures of the molecules of these substances have been established by the use of13C and1H NMR,1H-1H and13C-1H two-dimensional NMR spectra, circular dichroism, and chemical transformations as (24Z)- and (24E)-8(14 → 13)-abeo-17,13-friedo-lanosta-8,14(30),24-triene-3,23-dion-26-oic acids.

Keywords

Exomethylene Keto Ester Abies Species Spiran System Stereoisomeric Acid 

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Copyright information

© Plenum Publishing Corporation 1992

Authors and Affiliations

  • V. A. Raldugin
  • M. M. Shakirov
  • T. V. Leibyuk
  • S. A. Shevtsov

There are no affiliations available

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