<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-04-13T05:57:38Z</responseDate><request verb="GetRecord" identifier="oai:www.recercat.cat:2445/50467" metadataPrefix="qdc">https://recercat.cat/oai/request</request><GetRecord><record><header><identifier>oai:recercat.cat:2445/50467</identifier><datestamp>2025-12-04T19:32:23Z</datestamp><setSpec>com_2072_1057</setSpec><setSpec>col_2072_478908</setSpec><setSpec>col_2072_478917</setSpec><setSpec>col_2072_478933</setSpec></header><metadata><qdc:qualifieddc xmlns:qdc="http://dspace.org/qualifieddc/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:doc="http://www.lyncode.com/xoai" xsi:schemaLocation="http://purl.org/dc/elements/1.1/ http://dublincore.org/schemas/xmls/qdc/2006/01/06/dc.xsd http://purl.org/dc/terms/ http://dublincore.org/schemas/xmls/qdc/2006/01/06/dcterms.xsd http://dspace.org/qualifieddc/ http://www.ukoln.ac.uk/metadata/dcmi/xmlschema/qualifieddc.xsd">
   <dc:title>Pauson-Khand Adducts of N-Boc-propargylamine: A New Approach to 4,5-Disubstituted Cyclopentenones</dc:title>
   <dc:creator>Aiguabella Font, Núria</dc:creator>
   <dc:creator>Pesquer, Albert</dc:creator>
   <dc:creator>Verdaguer i Espaulella, Xavier</dc:creator>
   <dc:creator>Riera i Escalé, Antoni</dc:creator>
   <dc:subject>Ciclització (Química)</dc:subject>
   <dc:subject>Química biorgànica</dc:subject>
   <dc:subject>Compostos orgànics</dc:subject>
   <dc:subject>Síntesi orgànica</dc:subject>
   <dc:subject>Hormones</dc:subject>
   <dc:subject>Efecte de l'estrès sobre les plantes</dc:subject>
   <dc:subject>Estrès (Psicologia)</dc:subject>
   <dc:subject>Prostaglandines</dc:subject>
   <dc:subject>Biomolècules</dc:subject>
   <dc:subject>Ring formation (Chemistry)</dc:subject>
   <dc:subject>Bioorganic chemistry</dc:subject>
   <dc:subject>Organic compounds</dc:subject>
   <dc:subject>Organic synthesis</dc:subject>
   <dc:subject>Hormones</dc:subject>
   <dc:subject>Effect of stress on plants</dc:subject>
   <dc:subject>Stress (Psychology)</dc:subject>
   <dc:subject>Prostaglandins</dc:subject>
   <dc:subject>Biomolecules</dc:subject>
   <dcterms:abstract>A new approach to the synthesis of 4,5-disubstituted cyclopentenones is described. The strategy is based on the Pauson-Khand (PK) reaction of norbornadiene and N-Boc-propargylamine as alkyne with a masked leaving group, which can be eliminated at will. This approach to the synthesis of 4,5-disubstituted cyclopentenones overcomes the problem of using the alkylation to introduce the alpha-side-chain. As an example, prostane 13-epi-12-oxo-phytodienoic acid (13-epi-12-oxo-PDA) methyl ester was synthesized.</dcterms:abstract>
   <dcterms:issued>2014-02-20T13:16:35Z</dcterms:issued>
   <dcterms:issued>2014-05-28T22:02:23Z</dcterms:issued>
   <dcterms:issued>2013-05-28</dcterms:issued>
   <dcterms:issued>2014-02-20T12:18:26Z</dcterms:issued>
   <dc:type>info:eu-repo/semantics/article</dc:type>
   <dc:type>info:eu-repo/semantics/acceptedVersion</dc:type>
   <dc:relation>Versió postprint del document publicat a: http://dx.doi.org/10.1021/ol400999a</dc:relation>
   <dc:relation>Organic Letters, 2013, vol. 15, num. 11, p. 2696-2699</dc:relation>
   <dc:relation>http://dx.doi.org/10.1021/ol400999a</dc:relation>
   <dc:rights>(c) American Chemical Society , 2013</dc:rights>
   <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
   <dc:publisher>American Chemical Society</dc:publisher>
   <dc:source>Articles publicats en revistes (Química Inorgànica i Orgànica)</dc:source>
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