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Studies on Polyethers Produced by Red Algae

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Author(s): Francisco Cen-Pacheco | Laurette Nordström | María Luisa Souto | Manuel Norte Martín | José Javier Fernández | Antonio Hernández Daranas

Journal: Marine Drugs
ISSN 1660-3397

Volume: 8;
Issue: 4;
Start page: 1178;
Date: 2010;
Original page

Keywords: polyether | marine compound | triterpene | Laurencia viridis

ABSTRACT
Two novel squalene-derived triterpenes, spirodehydrovenustatriol (3) and 14-keto-dehydrothyrsiferol (4) were isolated from the red alga Laurencia viridis, together with two new and unusual C17 terpenoids, adejen A (5) and B (6). These truncated structures possess structural similarities with other known squalene metabolites and their biogenetic origin has been proposed on the basis of an oxidative process of the squalene skeleton. All the structures were elucidated by extensive use of 2D NMR spectroscopic methods.
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