<?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>1870-0195</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias farmacéuticas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. cienc. farm]]></abbrev-journal-title>
<issn>1870-0195</issn>
<publisher>
<publisher-name><![CDATA[Asociación Farmacéutica Mexicana A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-01952015000100017</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Biotransformación de esteroides con diferentes microrganismos]]></article-title>
<article-title xml:lang="en"><![CDATA[Biotransformation of steroids with different microorganisms]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García]]></surname>
<given-names><![CDATA[Jorge Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramos]]></surname>
<given-names><![CDATA[Rigoberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez]]></surname>
<given-names><![CDATA[Javier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vázquez]]></surname>
<given-names><![CDATA[Juan Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cano]]></surname>
<given-names><![CDATA[Arturo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,UNAM Facultad de Estudios Superiores Zaragoza Laboratorio de Biotransformaciones y Química de Productos Naturales]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2015</year>
</pub-date>
<volume>46</volume>
<numero>1</numero>
<fpage>17</fpage>
<lpage>32</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-01952015000100017&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-01952015000100017&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-01952015000100017&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La introducción de un grupo hidroxilo "biohidroxilación" en el esqueleto esteroidal, es una etapa importante en la síntesis de nuevos esteroides, ya que determinan su actividad biológica, como hormonas y fármacos fisiológicamente activos. Se conocen más de 300 fármacos esteroidales, lo que representa la segunda categoría dentro del mercado farmacéutico después de los antibióticos. En la producción de fármacos esteroidales y hormonas se han aplicado diversas biotransformaciones a escala industrial, las cuales han funcionalizado de manera quimio, regio y estereo-selectiva los diferentes tipos de materias primas por medio de reacciones de hidroxilación, oxidación de Bayer-Villiger, reacciones de oxidación, reducción, isomerización, adiciones de Michael y reacciones de condensación entre otras. Desde el punto de vista de la Química Verde constituyen una importante metodología química acorde con el medio ambiente.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The introduction of a hydroxyl group "biohidroxilation" in thesteroid skeleton is an important step in the synthesis of new steroids used physiologically as hormones and active drugs. There is currently about 300 known steroid drugs whose production constitutes the second category within the pharmaceutical market after antibiotics. Several biotransformations at industrial scale have been applied in the production of steroid hormones and drugs, which have functionalized different types of raw materials by means of chemo, regio and stereo-selective reactions (hydroxylation, Bayer-Villiger oxidation, oxidation reactions, reduction of group carbonyl, isomerization, and Michael additions, condensation reactions, among others). From the viewpoint of Green Chemistry biotransformations are an important chemical methodology according to the environment.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[biotransformaciones]]></kwd>
<kwd lng="es"><![CDATA[compuestos esteroidales]]></kwd>
<kwd lng="es"><![CDATA[transformaciones biológicas]]></kwd>
<kwd lng="es"><![CDATA[bioconversiones]]></kwd>
<kwd lng="es"><![CDATA[microrganismos]]></kwd>
<kwd lng="en"><![CDATA[biotransformation]]></kwd>
<kwd lng="en"><![CDATA[steroidal compounds]]></kwd>
<kwd lng="en"><![CDATA[biological transformation]]></kwd>
<kwd lng="en"><![CDATA[bioconversions]]></kwd>
<kwd lng="en"><![CDATA[microorganism]]></kwd>
</kwd-group>
</article-meta>
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