Helvetica Chimica Acta p. 715 - 731 (1995)
Update date:2022-08-04
Topics:
Jenny
Borschberg
The racemic form of the bicyclic diterpene hydrocarbon δ-araneosene (4), endowed with the dolabellane skeleton, was prepared from geraniol in two different ways. The more efficient route involved 13 steps and proceeded with an overall yield of 3.6% (average: 77% per step). With this reference sample at hand, the hitherto elusive metabolite (-)-4, a likely biogenetic precursor of cycloaraneosene ((-)-3) and sordaricin ((-)-1), could finally be isolated in ≥ 99.5% purity from the neutral fractions of the mold Sordaria araneosa CAIN (Ascomycetes).
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