Antiparasitic Activity of Bromotyrosine Alkaloids and New Analogues Isolated from the Fijian Marine Sponge Aplysinella rhax

Emmanuel Tope Oluwabusola* (Corresponding Author), Jioji N. Tabudravu* (Corresponding Author), Khalid S. Al Maqbali, Frederick Annang, Guiomar Pérez Moreno, Fernando Reyes, Marcel Jaspars

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)
5 Downloads (Pure)

Abstract

Ten bromotyrosine alkaloids were isolated and characterised from the marine sponge Aplysinella rhax (de Laubenfels 1954) collected from the Fiji Islands, which included one new bromotyrosine analogue, psammaplin P and two other analogues, psammaplin O and 3-bromo-2-hydroxy-5-(methoxycarbonyl)benzoic acid, which have not been previously reported from natural sources. HR-ESI-MS, 1D and 2D NMR spectroscopic methods were used in the elucidation of the compounds. Bisaprasin, a biphenylic dimer of psammaplin A, showed moderate activity with IC 50 at 19±5 and 29±6 μM against Trypanzoma cruzi Tulahuen C4, and the lethal human malaria species Plasmodium falciparum clone 3D7, respectively, while psammaplins A and D exhibited low activity against both parasites. This is the first report of the antimalarial and antitrypanosomal activity of the psammaplin-type compounds. Additionally, the biosynthesis hypotheses of three natural products were proposed.

Original languageEnglish
Article number2000335
Number of pages9
JournalChemistry & Biodiversity
Volume17
Issue number10
Early online date29 Sept 2020
DOIs
Publication statusPublished - Oct 2020

Bibliographical note

Open Access via Wiley publishing agreement
Funding Information
European Union Erasmus+ Programme
EU Seventh Framework Programme Project PharmaSea. Grant Number: 312184
Fundación MEDINA, Granada, Spain

Keywords

  • psammaplin
  • chagas disease
  • bromotyrosine
  • malaria
  • sponge
  • Chagas disease
  • METABOLITES
  • NATURAL-PRODUCTS
  • PSAMMAPLIN
  • PSEUDOCERATINA-PURPUREA
  • DRUGS
  • DERIVATIVES
  • ASSOCIATION

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