Two new biologically active cyclopentenones from Dasyscyphus sp. A47-98

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Published on: July 17, 2020

Viktor Mierau1, Olov Sterner, Timm Anke

  • 1Institut für Biotechnologie und Wirkstoff-Forschung, Erwin-Schroedinger-Str. 56, D-67663 Kaiserslautern, Germany.

The Journal of Antibiotics
|August 12, 2004
PubMed

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Aromatic Hydrocarbon Cations: Structural Overview01:18

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Cycloheptatriene is a neutral monocyclic unsaturated hydrocarbon that consists of an odd number of carbon atoms and an intervening sp3 carbon in the ring. The three double bonds in the ring correspond to 6 π electrons, which is a Huckel number, and therefore satisfies the criteria of 4n + 2 π electrons. However, the intervening sp3 carbon disrupts the continuous overlap of p orbitals. As a result, cycloheptatriene is not aromatic.
Removing one hydrogen from the intervening CH2 group with both...