<?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>S1870-249X2016000300117</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Development of a HPLC-DAD Method for the Simultaneous Quantification of 5-O-&#946;-D-galactopyranosyl-7-methoxy-3&#8217;,4&#8217;-dihydroxy-4-phenylcoumarin and its Aglycone in Feces]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cristians]]></surname>
<given-names><![CDATA[Sol]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rubio-Carrasco]]></surname>
<given-names><![CDATA[Kenneth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz-Juárez]]></surname>
<given-names><![CDATA[Angélica Soledad]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Covarrubias]]></surname>
<given-names><![CDATA[Vannesa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fuentes-Noriega]]></surname>
<given-names><![CDATA[Inés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Biología Laboratorio de Etnobotánica, Jardín Botánico]]></institution>
<addr-line><![CDATA[México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Química Departamento de Farmacia]]></institution>
<addr-line><![CDATA[México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Química Laboratorio 113, Departamento de Farmacia]]></institution>
<addr-line><![CDATA[México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Instituto Nacional de Medicina Genómica Laboratorio de Famacogenética ]]></institution>
<addr-line><![CDATA[México ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2016</year>
</pub-date>
<volume>60</volume>
<numero>3</numero>
<fpage>117</fpage>
<lpage>124</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-249X2016000300117&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-249X2016000300117&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-249X2016000300117&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: A sensitive and specific HPLC-DAD method was developed and validated for the simultaneous quantification of 5-O-&#946;-D-galactopyranosyl-7-methoxy-3&#8217;,4&#8217;-dihydroxy-4-phenylcoumarin (4-PC) and its aglycone in rat feces. The 4-phenylcoumarins are important antidiabetic and gastroprotective bioactive metabolites of a highly commercialized medicinal plant complex in Mexico, the Copalchi complex. Both the sample preparation and the quantification method were developed; the methodology allows, for the first time ever, the simultaneous determination of the 4-PC (Rt= 2.4 min) and its metabolized aglycone (Rt= 7.5 min), aimed to their pharmacokinetic analysis, specially their elimination. Linearity was determined in the range, 0.09-4.5 µg/mL for both compounds (R2= 0.9999). Accuracy was &lt;15.0% for 4-PC and aglycone with an inter-assay precision of maximum %RSD of 6.1% for 4-PC and 2.7% for the aglycone. The intra-assay precision was %RSD &lt; 7.5 for 4-PC and &lt; 3.5% for the aglycone. Analyte recovery from spiked samples was always &gt; 98.02% for 4-PC and &gt; 96.61% for its aglycone. The method was successfully applied to a single-dose preclinical pharmacokinetics preliminary study in rats.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Se desarrolló y validó un método analítico en HPLC-DAD sensible y específico para la cuantificación simultánea de la 5-O-&#946;-D-galactopiranosil-7-metoxi-3&#8217;,4&#8217;-dihidroxi-4-fenilcumarina (4-FC) y su aglicona en heces de rata. Las 4-fenilcumarinas son importantes metabolitos bioactivos antidiabéticos y gastroprotectores presentes en un complejo de plantas altamente comercializado en México: el complejo Copalchi. Se generaron los parámetros para la preparación de la muestra y su análisis; el método desarrollado permite, por vez primera, la cuantificación simultánea de la 4-FC (tr = 2.4 min) y su metabolito, aglicona (tr= 7.5 min), enfocado al análisis farmacocinético, especialmente su eliminación. La linealidad fue determinada en el rango de 0.09-4.5 µg/mL para ambos compuestos (R2= 0.9999). La exactitud fue &lt; 15.0% para 4-FC y su aglicona con una precisión inter-ensayo de máximo %RSD de 6.1% para 4-FC y 2.7% para la aglicona. La precisión intraensayo fue %RSD &lt; 7.5 para 4-FC y &lt; 3.5% para la aglicona. El recobro de los analitos a partir de muestras enriquecidas fue siempre &gt; 98.02% para 4-FC y &gt; 96.61% para la aglicona. La metodología analítica fue utilizada de manera exitosa en un estudio preliminar farmacocinético preclínico de una sola dosis en ratas.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[4-phenylcoumarin]]></kwd>
<kwd lng="en"><![CDATA[aglycone]]></kwd>
<kwd lng="en"><![CDATA[Copalchi]]></kwd>
<kwd lng="en"><![CDATA[HPLC-DAD]]></kwd>
<kwd lng="en"><![CDATA[pharmacokinetic]]></kwd>
<kwd lng="es"><![CDATA[4-fenilcumarina]]></kwd>
<kwd lng="es"><![CDATA[aglicona]]></kwd>
<kwd lng="es"><![CDATA[Copalchi]]></kwd>
<kwd lng="es"><![CDATA[HPLC-DAD]]></kwd>
<kwd lng="es"><![CDATA[farmacocinética]]></kwd>
</kwd-group>
</article-meta>
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