<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0124-2253</journal-id>
<journal-title><![CDATA[Revista científica]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Cient.]]></abbrev-journal-title>
<issn>0124-2253</issn>
<publisher>
<publisher-name><![CDATA[Universidad Distrital Francisco José de Caldas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0124-22532023000200001</article-id>
<article-id pub-id-type="doi">10.14483/23448350.19651</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Síntesis asistida por ultrasonido de pirazolo[3,4-b]piridinas policíclicas fusionadas]]></article-title>
<article-title xml:lang="en"><![CDATA[Ultrasound-Assisted Synthesis of Fused Polycyclic pyrazolo[3,4-b]pyridines]]></article-title>
<article-title xml:lang="pt"><![CDATA[Síntese assistida por ultrassom de pirazolo[3,4-b]piridinas policíclicas fundidas]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Trilleras]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[De-La-Rotta]]></surname>
<given-names><![CDATA[Freddy-Ríos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pedroza-García]]></surname>
<given-names><![CDATA[Luis-Felipe]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad del Atlántico  ]]></institution>
<addr-line><![CDATA[Atlántico Puerto Colombia]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad del Atlántico  ]]></institution>
<addr-line><![CDATA[Atlántico Puerto Colombia]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional de Río Cuarto  ]]></institution>
<addr-line><![CDATA[Córdoba ]]></addr-line>
<country>Argentina</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2023</year>
</pub-date>
<numero>47</numero>
<fpage>1</fpage>
<lpage>12</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0124-22532023000200001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0124-22532023000200001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0124-22532023000200001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Este trabajo describe una metodología sintética desarrollada para la obtención de pirazolo[3,4-b]piridinas policíclicas fusionadas. La síntesis se llevó a cabo en dos etapas, iniciando con la obtención de naftonas &#945;,&#946;-insaturadas y su posterior ciclocondensación con 5-amino-1-fenil-3-metil-1H-pirazol. Las ventajas de este enfoque incluyen simplicidad, eficiencia atómica, selectividad y buen rendimiento con un mínimo impacto ambiental. La ruta sintética está orientada hacia la obtención de N-heterociclos con puntos específicos de diversificación estructural que sean interés para la posterior exploración de sus propiedades biológicas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This work describes a synthetic methodology developed to obtain fused polycyclic pyrazolo[3,4-b]pyridines. The synthesis was carried out in two stages, starting with the preparation of &#945;,&#946;-unsaturated naphthones and their subsequent cyclocondensation with 5-amino-1-phenyl-3-methyl-1H-pyrazole. The advantages of this approach include simplicity, atomic efficiency, selectivity, and good yields with minimal environmental impact. The synthetic route is aimed at obtaining N-heterocycles with specific points of structural diversification that are of interest for later exploration of their biological properties.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo Este trabalho descreve a metodologia sintética desenvolvida para a obtenção de pirazolo[3,4-b]piridinas policíclicas fundidas. A síntese foi realizada em duas etapas, iniciando com a preparação das naftonas &#945;,&#946;-insaturadas e sua posterior ciclocondensação com 5-amino-1-fenil-3-metil-1H-pirazol. As vantagens desta abordagem incluem simplicidade, eficiência atômica, seletividade e bom rendimento em condições de mínimo impacto ambiental. Rota sintética para a obtenção de N-heterociclos com pontos específicos de diversificação estrutural que são de interesse para a exploração de suas propriedades biológicas.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[5-aminopirazoles]]></kwd>
<kwd lng="es"><![CDATA[ciclocondensación]]></kwd>
<kwd lng="es"><![CDATA[derivados fusionados de pirazol]]></kwd>
<kwd lng="es"><![CDATA[pirazolo[3,4-b]piridina]]></kwd>
<kwd lng="es"><![CDATA[síntesis por ultrasonido.]]></kwd>
<kwd lng="en"><![CDATA[5-aminopyrazole]]></kwd>
<kwd lng="en"><![CDATA[cyclocondensation]]></kwd>
<kwd lng="en"><![CDATA[fused pyrazole derivatives]]></kwd>
<kwd lng="en"><![CDATA[pyrazolo[3,4-b]pyridine]]></kwd>
<kwd lng="en"><![CDATA[ultrasound synthesis.]]></kwd>
<kwd lng="pt"><![CDATA[5-aminopirazol]]></kwd>
<kwd lng="pt"><![CDATA[ciclocondensação]]></kwd>
<kwd lng="pt"><![CDATA[derivados de pirazol fundidos]]></kwd>
<kwd lng="pt"><![CDATA[pirazolo[3,4-b]piridina]]></kwd>
<kwd lng="pt"><![CDATA[síntese por ultrassom.]]></kwd>
</kwd-group>
</article-meta>
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