Steroid Carbon Skeletons with Unusually Branched C-3 Alkyl Side Chains in Sulphur-Rich Sediments
Identifieur interne : 000D05 ( Main/Exploration ); précédent : 000D04; suivant : 000D06Steroid Carbon Skeletons with Unusually Branched C-3 Alkyl Side Chains in Sulphur-Rich Sediments
Auteurs : Stefan Schouten [Pays-Bas] ; Sarah Sephton [Pays-Bas] ; Marianne Baas [Pays-Bas] ; Jaap S. Sinninghe Damsté [Pays-Bas]Source :
- Geochimica et Cosmochimica Acta [ 0016-7037 ] ; 1998.
Abstract
A novel series of thiophenes with C-3 alkylated steroid carbon skeletons has been identified in sediments of the Miocene Monterey Formation (California, USA) and in the Turonian Tarfaya basin (Morocco). Their carbon skeletons are unusual in the sense that the alkyl side-chains at C-3 are almost exclusively isopentyl, 3-methylpentyl, and 2,3-dimethylbutyl moieties whilst n-alkyl (pentyl or hexyl) moieties are almost absent. Although they occur as thiophenes, the number of carbon atoms in the C-3 alkyl side chain and their carbon isotopic compositions point towards an origin from carbohydrates for the C-3 alkyl side chain. However, the branched structures of the C-3 alkyl side chains points to a different biosynthetic pathway, possibly starting from the addition of isopentylpyrophosphate to sterols.
Url:
DOI: 10.1016/S0016-7037(97)00386-4
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: 000A42
- to stream Istex, to step Curation: 000680
- to stream Istex, to step Checkpoint: 000699
- to stream Main, to step Merge: 000D45
- to stream Main, to step Curation: 000D05
Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Steroid Carbon Skeletons with Unusually Branched C-3 Alkyl Side Chains in Sulphur-Rich Sediments</title><author><name sortKey="Schouten, Stefan" sort="Schouten, Stefan" uniqKey="Schouten S" first="Stefan" last="Schouten">Stefan Schouten</name></author><author><name sortKey="Sephton, Sarah" sort="Sephton, Sarah" uniqKey="Sephton S" first="Sarah" last="Sephton">Sarah Sephton</name></author><author><name sortKey="Baas, Marianne" sort="Baas, Marianne" uniqKey="Baas M" first="Marianne" last="Baas">Marianne Baas</name></author><author><name sortKey="Sinninghe Damste, Jaap S" sort="Sinninghe Damste, Jaap S" uniqKey="Sinninghe Damste J" first="Jaap S." last="Sinninghe Damsté">Jaap S. Sinninghe Damsté</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:7BA30E943FF255DAA378941A0F5C4334B1E70E5F</idno><date when="1998" year="1998">1998</date><idno type="doi">10.1016/S0016-7037(97)00386-4</idno><idno type="url">https://api.istex.fr/document/7BA30E943FF255DAA378941A0F5C4334B1E70E5F/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000A42</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000A42</idno><idno type="wicri:Area/Istex/Curation">000680</idno><idno type="wicri:Area/Istex/Checkpoint">000699</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Checkpoint">000699</idno><idno type="wicri:doubleKey">0016-7037:1998:Schouten S:steroid:carbon:skeletons</idno><idno type="wicri:Area/Main/Merge">000D45</idno><idno type="wicri:Area/Main/Curation">000D05</idno><idno type="wicri:Area/Main/Exploration">000D05</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Steroid Carbon Skeletons with Unusually Branched C-3 Alkyl Side Chains in Sulphur-Rich Sediments</title><author><name sortKey="Schouten, Stefan" sort="Schouten, Stefan" uniqKey="Schouten S" first="Stefan" last="Schouten">Stefan Schouten</name><affiliation wicri:level="1"><country xml:lang="fr">Pays-Bas</country><wicri:regionArea>Department of Marine Biogeochemistry and Toxicology, Netherlands Institute for Sea Research, P.O. Box 59, 1790 AB Den Burg, Texel</wicri:regionArea><wicri:noRegion>Texel</wicri:noRegion></affiliation></author><author><name sortKey="Sephton, Sarah" sort="Sephton, Sarah" uniqKey="Sephton S" first="Sarah" last="Sephton">Sarah Sephton</name><affiliation wicri:level="1"><country xml:lang="fr">Pays-Bas</country><wicri:regionArea>Department of Marine Biogeochemistry and Toxicology, Netherlands Institute for Sea Research, P.O. Box 59, 1790 AB Den Burg, Texel</wicri:regionArea><wicri:noRegion>Texel</wicri:noRegion></affiliation></author><author><name sortKey="Baas, Marianne" sort="Baas, Marianne" uniqKey="Baas M" first="Marianne" last="Baas">Marianne Baas</name><affiliation wicri:level="1"><country xml:lang="fr">Pays-Bas</country><wicri:regionArea>Department of Marine Biogeochemistry and Toxicology, Netherlands Institute for Sea Research, P.O. Box 59, 1790 AB Den Burg, Texel</wicri:regionArea><wicri:noRegion>Texel</wicri:noRegion></affiliation></author><author><name sortKey="Sinninghe Damste, Jaap S" sort="Sinninghe Damste, Jaap S" uniqKey="Sinninghe Damste J" first="Jaap S." last="Sinninghe Damsté">Jaap S. Sinninghe Damsté</name><affiliation wicri:level="1"><country xml:lang="fr">Pays-Bas</country><wicri:regionArea>Department of Marine Biogeochemistry and Toxicology, Netherlands Institute for Sea Research, P.O. Box 59, 1790 AB Den Burg, Texel</wicri:regionArea><wicri:noRegion>Texel</wicri:noRegion></affiliation><affiliation></affiliation><affiliation wicri:level="1"><country wicri:rule="url">Pays-Bas</country></affiliation></author></analytic><monogr></monogr><series><title level="j">Geochimica et Cosmochimica Acta</title><title level="j" type="abbrev">GCA</title><idno type="ISSN">0016-7037</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1998">1998</date><biblScope unit="volume">62</biblScope><biblScope unit="issue">7</biblScope><biblScope unit="page" from="1127">1127</biblScope><biblScope unit="page" to="1132">1132</biblScope></imprint><idno type="ISSN">0016-7037</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0016-7037</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">A novel series of thiophenes with C-3 alkylated steroid carbon skeletons has been identified in sediments of the Miocene Monterey Formation (California, USA) and in the Turonian Tarfaya basin (Morocco). Their carbon skeletons are unusual in the sense that the alkyl side-chains at C-3 are almost exclusively isopentyl, 3-methylpentyl, and 2,3-dimethylbutyl moieties whilst n-alkyl (pentyl or hexyl) moieties are almost absent. Although they occur as thiophenes, the number of carbon atoms in the C-3 alkyl side chain and their carbon isotopic compositions point towards an origin from carbohydrates for the C-3 alkyl side chain. However, the branched structures of the C-3 alkyl side chains points to a different biosynthetic pathway, possibly starting from the addition of isopentylpyrophosphate to sterols.</div></front></TEI><affiliations><list><country><li>Pays-Bas</li></country></list><tree><country name="Pays-Bas"><noRegion><name sortKey="Schouten, Stefan" sort="Schouten, Stefan" uniqKey="Schouten S" first="Stefan" last="Schouten">Stefan Schouten</name></noRegion><name sortKey="Baas, Marianne" sort="Baas, Marianne" uniqKey="Baas M" first="Marianne" last="Baas">Marianne Baas</name><name sortKey="Sephton, Sarah" sort="Sephton, Sarah" uniqKey="Sephton S" first="Sarah" last="Sephton">Sarah Sephton</name><name sortKey="Sinninghe Damste, Jaap S" sort="Sinninghe Damste, Jaap S" uniqKey="Sinninghe Damste J" first="Jaap S." last="Sinninghe Damsté">Jaap S. Sinninghe Damsté</name><name sortKey="Sinninghe Damste, Jaap S" sort="Sinninghe Damste, Jaap S" uniqKey="Sinninghe Damste J" first="Jaap S." last="Sinninghe Damsté">Jaap S. Sinninghe Damsté</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Terre/explor/NickelMaghrebV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000D05 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000D05 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Terre
|area= NickelMaghrebV1
|flux= Main
|étape= Exploration
|type= RBID
|clé= ISTEX:7BA30E943FF255DAA378941A0F5C4334B1E70E5F
|texte= Steroid Carbon Skeletons with Unusually Branched C-3 Alkyl Side Chains in Sulphur-Rich Sediments
}}
| This area was generated with Dilib version V0.6.27. |  |