Lyngbya majuscula and Croton cuneatus were used as prototypes for the dereplication of phorbol ester receptor binding activity using a combination of hplc-uv and online phorbol dibutyrate (PDBu) receptor binding and batch fractionation over either Si gel or diolbonded Si gel. Debromoaplysiatoxin was responsible for the bioactivity of Lyngbya, whereas a complex of potent phorbol esters was detected in C. cuneatus.
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http://dx.doi.org/10.1021/np50070a014 | DOI Listing |
Mar Drugs
March 2018
Active Beauty Department, Givaudan France, 51110 Pomacle, France.
J Chromatogr A
November 2015
Laboratoire de Chimie de Produits Naturels, UMR CNRS SPE 6134, University of Corsica, Corte 20250, France. Electronic address:
This paper reports our effort to develop a comprehensive HPLC-MS(n)-based dereplication strategy for phorbol ester (PE), deoxyphorbol ester (dPE) and ingenol ester (IE) profiling in plant extracts. This strategy is composed of two sequential analysis exploiting specific hybrid triple quadrupole/linear ion trap instrument modes. A first run was performed using a multiple reaction monitoring (MRM) mode targeting fragmentation of PE and dPE/IE coupled with the acquisition of MS(2) spectrum for the ions at m/z 311 and m/z 313, respectively.
View Article and Find Full Text PDFFitoterapia
September 2015
Laboratoire de Chimie de Produits Naturels, UMR CNRS SPE 6134, University of Corsica, 20250 Corte, France. Electronic address:
Recently, phorbol esters from Euphorbiaceae have been shown to elicit potent and selective antiviral activity on the replication of Chikungunya virus (CHIKV) in cell culture. With the objective to found new compounds with anti-CHIKV activities, 45 extracts from various plant parts of 11 Mediterranean Euphorbia and one Mercurialis species were evaluated for selective inhibition of CHIKV replication. All EtOAc extracts, especially those prepared from latex, exhibited significant and selective antiviral activity in a Chikungunya virus-cell-based assay.
View Article and Find Full Text PDFToxicon
March 1997
Australian Institute of Marine Science, Townsville, Queensland, Australia.
Protein kinase C is a ubiquitous enzyme with a key role in cellular function, making it an attractive drug target. Utilising a competitive binding assay for the phorbol ester binding site of the enzyme in a rat brain membrane preparation, screening was undertaken on 686 marine macroorganisms representing a broad range of taxa and environments from throughout Australasia. Of these extracts from 28 organisms significantly inhibited [3H]phorbol dibutyrate binding, while two samples enhanced binding.
View Article and Find Full Text PDFJ Nat Prod
July 1991
PRI/DynCorp
Lyngbya majuscula and Croton cuneatus were used as prototypes for the dereplication of phorbol ester receptor binding activity using a combination of hplc-uv and online phorbol dibutyrate (PDBu) receptor binding and batch fractionation over either Si gel or diolbonded Si gel. Debromoaplysiatoxin was responsible for the bioactivity of Lyngbya, whereas a complex of potent phorbol esters was detected in C. cuneatus.
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