Composition of the neutral fraction from the oleoresin ofPinus sibirica
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1. From the neutral fraction of the oleoresin ofPinus sibirica R. Mayr have been isolated new macrocyclic diterpene compounds-isocembrene (I) and isocembrol (VI).
2. It has been shown that isocembrol is readily dehydrated into cembrene and isocembrene.
KeywordsDouble Bond Petroleum Ether Neutral Fraction Platinum Oxide Hexahydro
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