<?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>S1870-249X2007000200009</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Theoretical Study of Isoindolines to Identify them as Cyclooxygenase-1 and -2 Inhibitors by Docking Simulations]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mancilla]]></surname>
<given-names><![CDATA[Teresa]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Correa-Basurto]]></surname>
<given-names><![CDATA[José]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alavés Carbajal]]></surname>
<given-names><![CDATA[Karla S.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez Escalante]]></surname>
<given-names><![CDATA[Evelyn T. J.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Trujillo Ferrara]]></surname>
<given-names><![CDATA[José]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Instituto Politécnico Nacional Escuela Superior de Medicina Departamento de Bioquímica]]></institution>
<addr-line><![CDATA[México Distrito Federal]]></addr-line>
<country>México</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Instituto Politécnico Nacional Escuela Superior de Medicina Departamento de Farmacología]]></institution>
<addr-line><![CDATA[México Distrito Federal]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2007</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2007</year>
</pub-date>
<volume>51</volume>
<numero>2</numero>
<fpage>96</fpage>
<lpage>102</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-249X2007000200009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-249X2007000200009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-249X2007000200009&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[This work describes a theoretical study of two series of isoindolines 1(a-h) and 2(a-h) as possible COX-1 and COX-2 inhibitors by Docking method. Whereas, the same study was carried out for isoindolilamides 3-5, which have shown anti-inflammatory and analgesic effects, as well as ibuprofen 6 and dihydrodimethylbenzofuran 7, which are well-known as excellent anti-inflammatory. Compounds 6 and 7 were used to identify the active sites on these two enzymes and compared with those obtained from isoindolines under docking studies. The analysis of Docking results show that compounds 1(a-h) and 2(a-h) could inhibit both cyclooxygenases (COXs), due to the fact that they act in the same region as those taken as reference (3-7) make several interactions with the amino acid residues that conform the active sites of both COXs. &#916;G values were obtained for all compounds, they are between -9.87 and -6.65 (Kcal/mol, COX-1) and -10.96 and -6.28 (Kcal/mol, COX-2), being COX-1-1h and COX-2-1h complexes more stable. Therefore, Kd (&#956;M) values were obtained, they are in the range of 0.06 and 13.5 in COX-1 and finally the values between 0.01 and 24.7 in COX-2, where 1h shows more affinity to both COX-1 and COX-2.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Este trabajo describe un estudio teórico de dos series de isoindolines 1(a-h) y 2(a-h) como posibles inhibidores de COX-1 y COX-2 por el método docking. Además, el mismo método se llevó a cabo para las isoindolilamidas 3-5, las cuales han mostrado efectos anti inflamatorios y analgésicos, así como para el ibuprofeno 6 y dihirodimetilbenzofurano 7, los cuales son bien conocidos como antiinflamatorios. Los compuestos 6 y 7 fueron usados para identificar los sitios activos de estas dos enzimas y comparados con aquellos obtenidos en las isoindolinas por simulación docking. El análisis de los resultados por docking mostraron que los compuestos 1(a-h) y 2(a-h) pudieran inhibir ambas ciclooxigenasas (COXs), debido al hecho a que ellas actúan en la misma región como aquellos usados como referencia (3-7) mostrando varias interacciones con los residuos de los amino ácidos que conforman los sitios activos de ambas COXs. Los valores de &#916;G fueron obtenidos para todos los compuestos, se encuentran entre -9.87 y -6.65 (Kcal/mol, COX-1), y -10.96 y -6.28 (Kcal/mol, COX-2), siendo los complejos COX-1-1h y COX-2-1h mas estables. Además, los valores de Kd (&#956;M) fueron obtenidos, están en el intervalo de 0.06 y 13.5 en COX-1 y finalmente los valores entre 0.01 y 24.7 en COX-2, donde 1h muestra más afinidad para ambas COX-1 y COX-2.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Isoindolines]]></kwd>
<kwd lng="en"><![CDATA[Docking]]></kwd>
<kwd lng="en"><![CDATA[cyclooxygenase]]></kwd>
<kwd lng="en"><![CDATA[anti-inflammatory]]></kwd>
<kwd lng="en"><![CDATA[analgesic]]></kwd>
<kwd lng="en"><![CDATA[amino acids]]></kwd>
<kwd lng="es"><![CDATA[Isoindolinas]]></kwd>
<kwd lng="es"><![CDATA[Docking]]></kwd>
<kwd lng="es"><![CDATA[ciclooxigenasa]]></kwd>
<kwd lng="es"><![CDATA[anti-inflamatorios]]></kwd>
<kwd lng="es"><![CDATA[analgésicos]]></kwd>
<kwd lng="es"><![CDATA[amino ácidos]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  	    <p align="justify"><font face="verdana" size="4">Article</font></p>      <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="4"><b>Theoretical Study of Isoindolines to Identify them</b> <b>as Cyclooxygenase&#45;1 and &#45;2 Inhibitors by Docking Simulations</b></font></p>  	    <p align="center"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="2"><b>Teresa Mancilla,<sup>a</sup> Jos&eacute; Correa&#45;Basurto,<sup>a,b</sup> Karla S. Alav&eacute;s Carbajal,<sup>a</sup> Evelyn T. J. S&aacute;nchez Escalante<sup>a</sup> and Jos&eacute; Trujillo Ferrara<sup>a</sup></b></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><i><sup>a </sup>Secci&oacute;n de Estudios de Posgrado e Investigaci&oacute;n, Departamento de Bioqu&iacute;mica, Escuela Superior de Medicina, Instituto Polit&eacute;cnico Nacional Plan de San Luis y D&iacute;az Mir&oacute;n s/n Col. Casco de Santo Tom&aacute;s, Delegaci&oacute;n Miguel Hidalgo, C. P. 11340, M&eacute;xico, D. F</i>.</font></p>      	    <p align="justify"><font face="verdana" size="2"><i><sup>b </sup>Departamento de Farmacolog&iacute;a, Escuela Superior de Medicina, Instituto Polit&eacute;cnico Nacional Plan de San Luis y D&iacute;az Mir&oacute;n s/n Col. Casco de Santo Tom&aacute;s, Delegaci&oacute;n Miguel Hidalgo, C. P. 11340, M&eacute;xico, D. F</i>. E&#45;mail: <a href="mailto:tmancilla@ipn.mx">tmancilla@ipn.mx</a></font></p>      <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Recibido el 30 de diciembre de 2006    <br> 	Aceptado el 11 de abril de 2007</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>  	    <p align="justify"><font face="verdana" size="2">This work describes a theoretical study of two series of isoindolines <b>1</b>(<b>a&#45;h</b>) and <b>2</b>(<b>a&#45;h</b>) as possible COX&#45;1 and COX&#45;2 inhibitors by Docking method. Whereas, the same study was carried out for isoindolilamides <b>3&#45;5,</b> which have shown anti&#45;inflammatory and analgesic effects, as well as ibuprofen <b>6</b> and dihydrodimethylbenzofuran <b>7,</b> which are well&#45;known as excellent anti&#45;inflammatory. Compounds <b>6</b> and <b>7</b> were used to identify the active sites on these two enzymes and compared with those obtained from isoindolines under docking studies. The analysis of Docking results show that compounds <b>1</b>(<b>a&#45;h</b>) and <b>2</b>(<b>a&#45;h</b>) could inhibit both cyclooxygenases (COXs), due to the fact that they act in the same region as those taken as reference (<b>3&#45;7</b>) make several interactions with the amino acid residues that conform the active sites of both COXs. &#916;G values were obtained for all compounds, they are between &#45;9.87 and &#45;6.65 (Kcal/mol, COX&#45;1) and &#45;10.96 and &#45;6.28 (Kcal/mol, COX&#45;2), being COX&#45;1<b>&#45;1h</b> and COX&#45;2<b>&#45;1h</b> complexes more stable. Therefore, <i>K<sub>d</sub></i> (&#956;M) values were obtained, they are in the range of 0.06 and 13.5 in COX&#45;1 and finally the values between 0.01 and 24.7 in COX&#45;2, where <b>1h</b> shows more affinity to both COX&#45;1 and COX&#45;2.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Keywords:</b> Isoindolines, Docking, cyclooxygenase, anti&#45;inflammatory, analgesic, amino acids.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>  	    <p align="justify"><font face="verdana" size="2">Este trabajo describe un estudio te&oacute;rico de dos series de isoindolines <b>1</b>(<b>a&#45;h</b>) y <b>2</b>(<b>a&#45;h</b>) como posibles inhibidores de COX&#45;1 y COX&#45;2 por el m&eacute;todo docking. Adem&aacute;s, el mismo m&eacute;todo se llev&oacute; a cabo para las isoindolilamidas <b>3&#45;5,</b> las cuales han mostrado efectos anti inflamatorios y analg&eacute;sicos, as&iacute; como para el ibuprofeno <b>6</b> y dihirodimetilbenzofurano <b>7,</b> los cuales son bien conocidos como antiinflamatorios. Los compuestos <b>6</b> y <b>7</b> fueron usados para identificar los sitios activos de estas dos enzimas y comparados con aquellos obtenidos en las isoindolinas por simulaci&oacute;n docking. El an&aacute;lisis de los resultados por docking mostraron que los compuestos <b>1</b>(<b>a&#45;h</b>) y <b>2</b>(<b>a&#45;h</b>) pudieran inhibir ambas ciclooxigenasas (COXs), debido al hecho a que ellas act&uacute;an en la misma regi&oacute;n como aquellos usados como referencia (<b>3&#45;7</b>) mostrando varias interacciones con los residuos de los amino &aacute;cidos que conforman los sitios activos de ambas COXs. Los valores de &#916;G fueron obtenidos para todos los compuestos, se encuentran entre &#45;9.87 y &#45;6.65 (Kcal/mol, COX&#45;1), y &#45;10.96 y &#45;6.28 (Kcal/mol, COX&#45;2), siendo los complejos COX&#45;1<b>&#45;1h</b> y COX&#45;2<b>&#45;1h</b> mas estables. Adem&aacute;s, los valores de <i>K<sub>d</sub></i> (&#956;M) fueron obtenidos, est&aacute;n en el intervalo de 0.06 y 13.5 en COX&#45;1 y finalmente los valores entre 0.01 y 24.7 en COX&#45;2, donde <b>1h</b> muestra m&aacute;s afinidad para ambas COX&#45;1 y COX&#45;2.</font></p>      <p align="justify"><font face="verdana" size="2"><b>Palabras clave:</b> Isoindolinas, Docking, ciclooxigenasa, anti&#45;inflamatorios, analg&eacute;sicos, amino &aacute;cidos.</font></p>  	    ]]></body>
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