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<h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Pyrone</span></h1>
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<div class="gallerytext"><a href="2-Pyron" title="2-Pyron">2-Pyron</a> (α-Pyron)</div>
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<div class="gallerytext"><a href="4-Pyron" title="4-Pyron">4-Pyron</a> (γ-Pyron)</div>
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<p><b>Pyrone</b> oder <b>Pyranone</b> sind eine Gruppe cyclischer chemischer Verbindungen aus der Gruppe der <a href="Sauerstoff" title="Sauerstoff">sauerstoffhaltigen</a> <a href="Heterocyclen" title="Heterocyclen">Heterocyclen</a>.
</p><p>Pyrone enthalten einen ungesättigten Sechsring mit einem Sauerstoffatom und einer <a href="Ketogruppe" class="mw-redirect" title="Ketogruppe">Ketogruppe</a>. Es existieren zwei <a href="Isomer" class="mw-redirect" title="Isomer">isomere</a> Verbindungen: <a href="2-Pyron" title="2-Pyron">2-Pyron</a> und <a href="4-Pyron" title="4-Pyron">4-Pyron</a>. Die 2-Pyron-Struktur kommt in der Natur als Teil des <a href="Cumarin" title="Cumarin">Cumarin</a>-Ringsystems und als Teil mehrerer bakterieller <a href="Signalmolek%C3%BCl" class="mw-redirect" title="Signalmolekül">Signalmoleküle</a> vor. 4-Pyron kommt ebenfalls in einigen natürlichen chemischen Verbindungen wie <a href="Maltol" title="Maltol">Maltol</a>, <a href="Kojis%C3%A4ure" title="Kojisäure">Kojisäure</a> und <a href="Flavonoide" title="Flavonoide">Flavonoiden</a> vor.
</p><p>Die 4-Pyron-Struktur ist ein Bestandteil der <a href="Mekons%C3%A4ure" title="Mekonsäure">Mekonsäure</a>. Die Biosynthese erfolgt aus <a href="Phenylalanin" title="Phenylalanin">Phenylalanin</a> oder <a href="Tyrosin" title="Tyrosin">Tyrosin</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>
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<div class="mw-heading mw-heading2"><h2 id="Literatur">Literatur</h2></div>
<ul><li><i>Introduction to Organic Chemistry</i>, Andrew Streitwieser, Jr. and Clayton H. Heathcock, Third Edition, S. 1038–1040, ISBN 0-02-418140-4.</li>
<li>Alexander O Brachmann, Sophie Brameyer u. a.: <i>Pyrones as bacterial signaling molecules.</i> In: <i>Nature Chemical Biology.</i> 2013, S. 573–578, <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1038/nchembio.1295">10.1038/nchembio.1295</a></span>.</li></ul>
<div class="mw-heading mw-heading2"><h2 id="Einzelnachweise">Einzelnachweise</h2></div>
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<li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text">J. K. Weng, Y. Li, H. Mo, C. Chapple: <i>Assembly of an evolutionarily new pathway for α-pyrone biosynthesis in Arabidopsis.</i> In: <i>Science.</i> Band 337, Nummer 6097, August 2012, S. 960–964, <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1126/science.1221614">10.1126/science.1221614</a></span>, <a class="external mw-magiclink-pmid" rel="nofollow" href="https://www.ncbi.nlm.nih.gov/pubmed/22923580?dopt=Abstract">PMID 22923580</a>.</span>
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