Carotenoid dehydrates in recent marine sediments. The structure and synthesis of fucoxanthin dehydrate

Fucoxanthin dehydrates are common constitutents of anoxic marine sediments representing important intermediates in the early diagenesis of major phytoplankton pigments. We report here the full structure and synthesis of fucoxanthin 5′-dehydrate and fucoxanthinol 5′-dehydrate isolated from Buzzards B...

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Bibliographic Details
Published in:Organic geochemistry 1988, Vol.12 (5), p.469-477
Main Authors: Repeta, Daniel J., Frew, Nelson M.
Format: Article
Language:English
Subjects:
carotenoid
dehydration
Earth sciences
Earth, ocean, space
Exact sciences and technology
fucoxanthin alcohols
Geochemistry
Geochemistry: general, methodology, regional studies
marine sediments
pigment
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Summary:Fucoxanthin dehydrates are common constitutents of anoxic marine sediments representing important intermediates in the early diagenesis of major phytoplankton pigments. We report here the full structure and synthesis of fucoxanthin 5′-dehydrate and fucoxanthinol 5′-dehydrate isolated from Buzzards Bay (Massachusetts) and Peru surface sediments. Our analyses demonstrate that only the 9′- cis acetylenic isomer of each dehydration product accumulates in sediments, a result consistent with a metabolic origin for these transformation products.
ISSN:0146-6380
1873-5290
DOI:10.1016/0146-6380(88)90156-8