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Synlett 1993; 1993(6): 391-392
DOI: 10.1055/s-1993-22465
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Synthesis of (±)-9ßH-Isopimara-7,15-dien-17-ol: A Naturally Occuring Diterpene with 9,10-syn Stereochemistry

Jean-Marc Weibel* , Denis Heissler
  • *Université Louis Pasteur, Institut de Chimie, URA CNRS 31, BP 296, F-67008 Strasbourg, France
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Publikationsdatum:
19. März 2002 (online)

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A synthesis of the recently isolated 9ßH-isopimara-7,15-dien-17-ol starting from bicyclic 9ßH-drim-8(12)-en-11-al is reported. The third ring is closed by an intramolecular carbonyl ene reaction and the substituents at C-13 are introduced by a [2.3]-sigmatropic Wittig-Still rearrangement.