Bisdioxycalamenene: A Bis-Sesquiterpene from the Soft Coral Rhytisma fulvum fulvum

Abstract : A dichloromethane extract of the soft coral Rhytisma fulvum fulvum collected in Madagascar afforded a novel compound possessing an unprecedented pentacyclic skeleton, bisdioxycalamenene (1), as well as seven known sesquiterpenes. The structures of the compounds were elucidated using 1D and 2D NMR techniques, as well as high-resolution mass spectrometry. The absolute configuration of 1 was determined using X-ray diffraction analysis and anomalous dispersion effects. The structure elucidation and a possible biogenesis of the compound are discussed.
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Yuval J. Trifman, Maurice Aknin, Anne Gauvin-Bialecki, Yehuda Benayahu, Shmuel Carmeli, et al.. Bisdioxycalamenene: A Bis-Sesquiterpene from the Soft Coral Rhytisma fulvum fulvum. Marine drugs, MDPI, 2016, 14 (2), pp.41. ⟨http://www.mdpi.com/1660-3397/14/2/41⟩. ⟨10.3390/md14020041⟩. ⟨hal-01399941⟩

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