<?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>2026-08-26T08:51:57Z</responseDate><request verb="GetRecord" identifier="oai:gredos.usal.es:10366/154181" metadataPrefix="mods">https://gredos.usal.es/oai/request</request><GetRecord><record><header><identifier>oai:gredos.usal.es:10366/154181</identifier><datestamp>2026-01-15T10:53:18Z</datestamp><setSpec>com_10366_4155</setSpec><setSpec>com_10366_4055</setSpec><setSpec>com_10366_3946</setSpec><setSpec>com_10366_3823</setSpec><setSpec>col_10366_4156</setSpec></header><metadata><mods:mods xmlns:mods="http://www.loc.gov/mods/v3" xmlns:doc="http://www.lyncode.com/xoai" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-1.xsd">
<mods:name>
<mods:namePart>Simmonds, M.S.J.</mods:namePart>
</mods:name>
<mods:name>
<mods:namePart>Fernández Mateos, Alfonso</mods:namePart>
</mods:name>
<mods:name>
<mods:namePart>Herrero Teijón, Pablo</mods:namePart>
</mods:name>
<mods:name>
<mods:namePart>Pascual Coca, Gustavo</mods:namePart>
</mods:name>
<mods:name>
<mods:namePart>Rubio González, María Rosa</mods:namePart>
</mods:name>
<mods:extension>
<mods:dateAvailable encoding="iso8601">2024-01-12T12:25:29Z</mods:dateAvailable>
</mods:extension>
<mods:extension>
<mods:dateAccessioned encoding="iso8601">2024-01-12T12:25:29Z</mods:dateAccessioned>
</mods:extension>
<mods:originInfo>
<mods:dateIssued encoding="iso8601">2010</mods:dateIssued>
</mods:originInfo>
<mods:identifier type="citation">Fernández Mateos, A., Herrero Teijón, P., Pascual Coca, G., Simmonds, M.S.J. &amp; Rubio González, R. (2010). Synthesis of limonoid CDE fragments related to limonin and nimbinim. Tetrahedron, 66(36), 7257–7261. https://doi.org/10.1016/j.tet.2010.07.020</mods:identifier>
<mods:identifier type="issn">0040-4020</mods:identifier>
<mods:identifier type="uri">http://hdl.handle.net/10366/154181</mods:identifier>
<mods:identifier type="doi">10.1016/j.tet.2010.07.020</mods:identifier>
<mods:abstract>[EN]A practical, brief and selective synthesis of limonoid CDE fragments from a readily available starting diketone is described. The key step is a cationic electrocyclization promoted by strong acids. In general the methodology has been demonstrated for compounds with sensitive furane and thiophene substituents to obtain diverse substituted indenones. Several of the compounds obtained show significant antifeedant activity against Spodoptera littoralis.</mods:abstract>
<mods:language>
<mods:languageTerm>eng</mods:languageTerm>
</mods:language>
<mods:accessCondition type="useAndReproduction">http://creativecommons.org/licenses/by-nc-nd/4.0/</mods:accessCondition>
<mods:accessCondition type="useAndReproduction">info:eu-repo/semantics/openAccess</mods:accessCondition>
<mods:accessCondition type="useAndReproduction">Attribution-NonCommercial-NoDerivatives 4.0 Internacional</mods:accessCondition>
<mods:subject>
<mods:topic>Limonoids</mods:topic>
</mods:subject>
<mods:subject>
<mods:topic>Nazarov cyclization</mods:topic>
</mods:subject>
<mods:subject>
<mods:topic>Antifeedant</mods:topic>
</mods:subject>
<mods:subject>
<mods:topic>Nimbinim</mods:topic>
</mods:subject>
<mods:subject>
<mods:topic>Limonim</mods:topic>
</mods:subject>
<mods:titleInfo>
<mods:title>Synthesis of limonoid CDE fragments related to limonin and nimbinim</mods:title>
</mods:titleInfo>
<mods:genre>info:eu-repo/semantics/article</mods:genre>
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