Cyclotheonellazoles A–C, Potent Protease Inhibitors from the Marine Sponge Theonella aff. swinhoei

Michal Issac 1 Maurice Aknin 2 Anne Gauvin-Bialecki 2 Nicole de Voogd 3 Alisson Ledoux 4 Michel Frédérich 4 Yoel Kashman 1 Shmuel Carmeli 1
1 School of Chemistry
2 LCSNSA - Laboratoire de Chimie des Substances Naturelles et des Sciences des Aliments
3 Naturalis Biodiversity Center [Leiden]
4 Université de Liège
Abstract : The extract of a sample of the sponge Theonella aff. swinhoei collected in Madagascar exhibited promising in vitro antiplasmodial activity. The antiplasmodial activity was ascribed in part to the known metabolite swinholide A. Further investigation of the extract afforded three unusual cyclic peptides, cyclotheonellazoles A−C(1−3), which contain six nonproteinogenic amino acids out of the eight acid units that compose these natural products. Among these acids the most novel were 4-propenoyl-2-tyrosylthiazole and 3-amino-4-methyl-2-oxohexanoic acid. The structure of the compounds was elucidated by interpretation of the 1D and 2D NMR data, HRESIMS, and advanced Merfay's techniques. The new compounds were found to be nanomolar inhibitors of chymotrypsin and sub-nanomolar inhibitors of elastase, but did not present antiplasmodial activity.
Document type :
Journal articles
Complete list of metadatas

Cited literature [1 references]  Display  Hide  Download
https://hal.univ-reunion.fr/hal-01625257
Contributor : Réunion Univ <>
Submitted on : Friday, October 27, 2017 - 1:19:55 PM
Last modification on : Monday, September 2, 2019 - 9:42:59 AM
Long-term archiving on : Sunday, January 28, 2018 - 1:44:00 PM

File

4- Issac et al, J Nat Prod1 20...
Files produced by the author(s)

Identifiers

Collections

UNIV-REUNION | LCSNSA | PAPANGUE | FST-REUNION

Citation

Michal Issac, Maurice Aknin, Anne Gauvin-Bialecki, Nicole de Voogd, Alisson Ledoux, et al.. Cyclotheonellazoles A–C, Potent Protease Inhibitors from the Marine Sponge Theonella aff. swinhoei. Journal of Natural Products, American Chemical Society, 2017, 80 (4), pp.1110-1116. ⟨10.1021/acs.jnatprod.7b00028⟩. ⟨hal-01625257⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

125

Files downloads

151

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD