New bioactive cyclic peroxides from the Caribbean marine sponge Plakortis zyggompha

Fabrice Berrué, Olivier P. Thomas, Corinne Funel Le Bon, Fernando Reyes, Philippe Amade

Research output: Contribution to a Journal (Peer & Non Peer)Articlepeer-review

25 Citations (Scopus)

Abstract

The new plakortide Q (1) has been isolated from the little studied marine sponge Plakortis zyggompha, together with the six new cyclic peroxide analogues 2-7 in their methyl ester forms 2a-7a. Their structure was fully elucidated through NMR and MS analyses and the relative stereochemistry of the 1,2-dioxane ring was established after interpretation of the coupling constant values and the NOESY data. The carboxylic acid function of these compounds was proved to be very reactive and methylation was found to take place during the purification process. The non-esterified peroxides exhibited more cytotoxic activity against human tumor cell lines than their corresponding methyl esters.

Original languageEnglish
Pages (from-to)11843-11849
Number of pages7
JournalTetrahedron
Volume61
Issue number50
DOIs
Publication statusPublished - 12 Dec 2005
Externally publishedYes

Keywords

  • Antitumoral
  • Marine sponge
  • Peroxides
  • Plakortis

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