<?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>2026-04-13T02:51:12Z</responseDate><request verb="GetRecord" identifier="oai:www.recercat.cat:2445/50467" metadataPrefix="didl">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><d:DIDL xmlns:d="urn:mpeg:mpeg21:2002:02-DIDL-NS" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:doc="http://www.lyncode.com/xoai" xsi:schemaLocation="urn:mpeg:mpeg21:2002:02-DIDL-NS http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-21_schema_files/did/didl.xsd">
   <d:Item id="hdl_2445_50467">
      <d:Descriptor>
         <d:Statement mimeType="application/xml; charset=utf-8">
            <dii:Identifier xmlns:dii="urn:mpeg:mpeg21:2002:01-DII-NS" xsi:schemaLocation="urn:mpeg:mpeg21:2002:01-DII-NS http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-21_schema_files/dii/dii.xsd">urn:hdl:2445/50467</dii:Identifier>
         </d:Statement>
      </d:Descriptor>
      <d:Descriptor>
         <d:Statement mimeType="application/xml; charset=utf-8">
            <oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:dc="http://purl.org/dc/elements/1.1/" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.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>
               <dc:description>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.</dc:description>
               <dc:date>2014-02-20T13:16:35Z</dc:date>
               <dc:date>2014-05-28T22:02:23Z</dc:date>
               <dc:date>2013-05-28</dc:date>
               <dc:date>2014-02-20T12:18:26Z</dc:date>
               <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>
            </oai_dc:dc>
         </d:Statement>
      </d:Descriptor>
   </d:Item>
</d:DIDL></metadata></record></GetRecord></OAI-PMH>