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

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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.

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Novosibirsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 604–608, September–October, 1971.

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Raldugin, V.A., Kashtanova, N.K. & Pentegova, V.A. α-,β-, andγ-pinacenes — new diterpenoids from the oleoresins of Pinus koraiensis and P. sibirica. Chem Nat Compd 7, 582–585 (1971). https://doi.org/10.1007/BF00568412

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  • DOI: https://doi.org/10.1007/BF00568412

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