<?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>1870-249X</journal-id>
<journal-title><![CDATA[Journal of the Mexican Chemical Society]]></journal-title>
<abbrev-journal-title><![CDATA[J. Mex. Chem. Soc]]></abbrev-journal-title>
<issn>1870-249X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Química de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-249X2018000300024</article-id>
<article-id pub-id-type="doi">10.29356/jmcs.v62i3.370</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Cytotoxic Activity of Casearborin C Isolated from Casearia corymbosa]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vila-Luna]]></surname>
<given-names><![CDATA[María Leonor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moo-Puc]]></surname>
<given-names><![CDATA[Rosa Esther]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres-Tapia]]></surname>
<given-names><![CDATA[Luis Wiliunfo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Peraza-Sánchez]]></surname>
<given-names><![CDATA[Sergio Rubén]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro de Investigación Científica de Yucatán Unidad de Biotecnología ]]></institution>
<addr-line><![CDATA[Mérida Yucatán]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Centro Médico Ignacio García Téllez Unidad de Investigación Médica]]></institution>
<addr-line><![CDATA[Mérida Yucatán]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2018</year>
</pub-date>
<volume>62</volume>
<numero>3</numero>
<fpage>24</fpage>
<lpage>28</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-249X2018000300024&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-249X2018000300024&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-249X2018000300024&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Casearborin c (1), syringic acid (2), ent-3&#946;-hydroxy-(-)-13-epi-manoyl oxide (3), ent-(-)-13-epi-manoyl oxide (4), ent-(-)-kaur-16-en-19-oic acid (5), and &#947;-sitosterol (6) were isolated from Casearia corymbosa stem bark. Only casearborin c showed cytotoxic activity on HeLa and SiHa cancer cell lines. This work contributes to the description of three compounds (1-3) newly isolated from C. corymbosa and highlights that casearborin c, a clerodane-type diterpene, is responsible for the cytotoxic activity shown in the original methanol extract of this species.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Casearborina c (1), ácido siríngico (2), óxido de ent-3&#946;-hidroxi-(-)-13-epi-manoilo (3), óxido de ent-(-)-13-epi-manoilo (4), ácido ent-(-)-kaur-16-en-19-oico (5) y &#947;-sitosterol (6) se aislaron de la corteza del tallo de Casearia corymbosa. Sólo casearborina c mostró actividad citotóxica en las líneas de células cancerígenas HeLa y SiHa. Este trabajo describe tres compuestos (1-3) aislados por primera vez de C. corymbosa y destaca que casearborina c, un diterpeno de tipo clerodano, es responsable de la actividad citotóxica del extracto metanólico de esta especie.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Salicaceae]]></kwd>
<kwd lng="en"><![CDATA[Casearia corymbosa]]></kwd>
<kwd lng="en"><![CDATA[cytotoxic activity]]></kwd>
<kwd lng="en"><![CDATA[diterpenes]]></kwd>
<kwd lng="en"><![CDATA[clerodanes]]></kwd>
<kwd lng="en"><![CDATA[casearborin c]]></kwd>
<kwd lng="es"><![CDATA[Salicaceae]]></kwd>
<kwd lng="es"><![CDATA[Casearia corymbosa]]></kwd>
<kwd lng="es"><![CDATA[actividad citotóxica]]></kwd>
<kwd lng="es"><![CDATA[diterpenos]]></kwd>
<kwd lng="es"><![CDATA[clerodanos]]></kwd>
<kwd lng="es"><![CDATA[casearborina c]]></kwd>
</kwd-group>
</article-meta>
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