English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/26228
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Algal carotenoids. Part 64. Structure and chemistry of 4-keto-19'-hexanoyloxyfucoxanthin with a novel carotenoid end group

AuthorsSkarstad Egeland, Einar; Garrido, J. L. ; Zapata, Manuel ; Maestro, Miguel Ángel; Liaaen-Jensen, Synnøve
Issue Date2000
PublisherRoyal Society of Chemistry (UK)
CitationJournal of Chemical Society Perkin Transactions 1: 1223-1230 (2000)
AbstractThe structural elucidation of a new carotenoid 4-keto-19-hexanoyloxyfucoxanthin 5 from Emiliania huxleyi is documented by chromatographic (HPLC, TLC), spectroscopic (VIS, EIMS, FABMS, FABMSMS, 2D 1H NMR) and chemical evidence. The novel carotenoid end group exhibits particular spectroscopic and chemical properties. In particular the reactions with base and acid are investigated.Due to a very weak molecular ion upon electron impact and facile cleavage to paracentrone 20 related fragments, the new carotenoid was previously misidentified as 19-hexanoyloxyparacentrone 3-acetate 8, also found in other prymnesiophytes (haptophytes).This novel carotenoid readily undergoes cleavage to a C31-skeletal paracentrone 20 related product upon storage, preferably in methanol solution.The new end group represents a plausible precursor for C31-skeletal methyl ketone apocarotenoid metabolites in animals, and differs from the previously suggested precursor.
Description8 pages, 2 figures, 5 schemes.
Publisher version (URL)http://dx.doi.org/10.1039/a910345g
URIhttp://hdl.handle.net/10261/26228
DOI10.1039/a910345g
ISSN1472-7781
Appears in Collections:(IIM) Artículos
Files in This Item:
File Description SizeFormat 
a910345g.pdf202,47 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.