Chemistry of Natural Compounds

, Volume 7, Issue 5, pp 582–585 | Cite as

α-,β-, andγ-pinacenes — new diterpenoids from the oleoresins of Pinus koraiensis and P. sibirica

  • V. A. Raldugin
  • N. K. Kashtanova
  • V. A. Pentegova
Article

Summary

1. From the oleoresin ofPinus koraiensis Sieb. et Zucc we have isolated new diterpenoids — α-, β-, and γ-pinacenes — for which the structure of 7-trans, 11-trans-cembra-1,3,7,11-tetraene has been shown. They differ by the configurations of the double bonds of the conjugated diene system. α- and β-Pinacenes have also been isolated from the oleoresin ofPinus sibirica R. Mayr.

2. The isomerization of cembrene with iodine under conditions favoring an ionic reaction has led to α-, β-, and γ-pinacenes.

Keywords

Geometrical Isomer Methine Proton Tetraene Vinyl Methyl Isopropyl Group 

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Copyright information

© Consultants Bureau 1974

Authors and Affiliations

  • V. A. Raldugin
  • N. K. Kashtanova
  • V. A. Pentegova

There are no affiliations available

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