<?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>S1870-249X2007000300007</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Secondary Metabolites from Mexican Species of the Tribe Senecioneae (Asteraceae)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Romo de Vivar]]></surname>
<given-names><![CDATA[Alfonso]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Castorena]]></surname>
<given-names><![CDATA[Ana-Lidia]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arciniegas]]></surname>
<given-names><![CDATA[Amira]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villaseñor]]></surname>
<given-names><![CDATA[José Luis]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Nacional Autónoma de México, Instituto de Química ]]></institution>
<addr-line><![CDATA[México Distrito Federal]]></addr-line>
<country>México</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidad Nacional Autónoma de México, Instituto de Biología ]]></institution>
<addr-line><![CDATA[México Distrito Federal]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2007</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2007</year>
</pub-date>
<volume>51</volume>
<numero>3</numero>
<fpage>160</fpage>
<lpage>172</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-249X2007000300007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-249X2007000300007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-249X2007000300007&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[A revision of the Mexican species belonging to the tribe Senecioneae chemically studied so far, shows that the genera Senecio and Packera (subtribe Senecioninae), and the genera Barkleyanthus, Pittocaulon, Psacalium, and Telanthophora (subtribe Tussilagininae) contain pyrrolizidine alkaloids (PAs) and eremophilane derivatives as their main secondary metabolites. However, from Roldana and Robinsonecio (subtribe Tussilagininae) no PAs have been isolated. A special case is the genus Pseudogynoxys in which neither PAs nor eremophilanes are reported.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Una revisión de las especies mexicanas de la tribu Senecioneae estudiadas químicamente hasta el momento, muestra que los géneros Senecio y Packera (subtribu Senecioninae), y los géneros Barkleyanthus, Pittocaulon, Psacalium y Telanthophora (subtribu Tussilagininae) contienen alcaloides pirrolizidínicos (APs) y derivados de eremofilano como sus metabolitos secundarios principales. Sin embargo, de Roldana y Robinsonecio (subtribu Tussilagininae) no se han aislado APs. Un caso especial es el género Pseudogynoxys para el cual no se han reportado ni APs ni eremofilanos.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Senecioneae]]></kwd>
<kwd lng="en"><![CDATA[Senecio]]></kwd>
<kwd lng="en"><![CDATA[Packera]]></kwd>
<kwd lng="en"><![CDATA[Barkleyanthus]]></kwd>
<kwd lng="en"><![CDATA[Pittocaulon]]></kwd>
<kwd lng="en"><![CDATA[Psacalium]]></kwd>
<kwd lng="en"><![CDATA[Telanthophora]]></kwd>
<kwd lng="en"><![CDATA[pyrrolizidine alkaloids]]></kwd>
<kwd lng="en"><![CDATA[eremophilane]]></kwd>
<kwd lng="en"><![CDATA[Roldana]]></kwd>
<kwd lng="en"><![CDATA[Robinsonecio]]></kwd>
<kwd lng="es"><![CDATA[Senecioneae]]></kwd>
<kwd lng="es"><![CDATA[Senecio]]></kwd>
<kwd lng="es"><![CDATA[Packera]]></kwd>
<kwd lng="es"><![CDATA[Barkleyanthus]]></kwd>
<kwd lng="es"><![CDATA[Pittocaulon]]></kwd>
<kwd lng="es"><![CDATA[Psacalium]]></kwd>
<kwd lng="es"><![CDATA[Telanthophora]]></kwd>
<kwd lng="es"><![CDATA[alcaloides pirrolizidínicos]]></kwd>
<kwd lng="es"><![CDATA[eremofilano]]></kwd>
<kwd lng="es"><![CDATA[Roldana]]></kwd>
<kwd lng="es"><![CDATA[Robinsonecio]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  	    <p align="justify"><font face="verdana" size="4">Review</font></p>  	    <p align="center"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="4"><b>Secondary Metabolites from Mexican Species of the Tribe Senecioneae (Asteraceae)</b></font></p>  	    <p align="center"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="2"><b>Alfonso Romo de Vivar,*<sup>1</sup> Ana&#45;Lidia P&eacute;rez&#45;Castorena,<sup>1</sup> Amira Arciniegas,<sup>1</sup> Jos&eacute; Luis Villase&ntilde;or<sup>2</sup></b></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><sup>1</sup> <i>Instituto de Qu&iacute;mica. Universidad Nacional Aut&oacute;noma de M&eacute;xico, Circuito Exterior, Ciudad Universitaria, Coyoac&aacute;n 04510, D.F., M&eacute;xico.</i></font> <font face="verdana" size="2"><a href="mailto:aromovi@servidor.unam.mx">aromovi@servidor.unam.mx</a></font></p>      <p align="justify"><font face="verdana" size="2"><sup>2</sup> <i>Instituto de Biolog&iacute;a, Universidad Nacional Aut&oacute;noma de M&eacute;xico, Circuito Exterior, Ciudad Universitaria, Coyoac&aacute;n 04510, D.F., M&eacute;xico.</i> <a href="mailto:aromovi@servidor.unam.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 6 de agosto de 2007    <br> 	Aceptado el 5 de noviembre 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">A revision of the Mexican species belonging to the tribe Senecioneae chemically studied so far, shows that the genera <i>Senecio</i> and <i>Packera</i> (subtribe Senecioninae), and the genera <i>Barkleyanthus, Pittocaulon, Psacalium,</i> and <i>Telanthophora</i> (subtribe Tussilagininae) contain pyrrolizidine alkaloids (PAs) and eremophilane derivatives as their main secondary metabolites. However, from <i>Roldana</i> and <i>Robinsonecio</i> (subtribe Tussilagininae) no PAs have been isolated. A special case is the genus <i>Pseudogynoxys</i> in which neither PAs nor eremophilanes are reported.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Keyword:</b> Senecioneae, <i>Senecio, Packera, Barkleyanthus, Pittocaulon, Psacalium, Telanthophora,</i> pyrrolizidine alkaloids, eremophilane, <i>Roldana, Robinsonecio.</i></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">Una revisi&oacute;n de las especies mexicanas de la tribu Senecioneae estudiadas qu&iacute;micamente hasta el momento, muestra que los g&eacute;neros <i>Senecio</i> y <i>Packera</i> (subtribu Senecioninae), y los g&eacute;neros <i>Barkleyanthus, Pittocaulon, Psacalium</i> y <i>Telanthophora</i> (subtribu Tussilagininae) contienen alcaloides pirrolizid&iacute;nicos (APs) y derivados de eremofilano como sus metabolitos secundarios principales. Sin embargo, de <i>Roldana</i> y <i>Robinsonecio</i> (subtribu Tussilagininae) no se han aislado APs. Un caso especial es el g&eacute;nero <i>Pseudogynoxys</i> para el cual no se han reportado ni APs ni eremofilanos.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Palabras clave:</b> Senecioneae, <i>Senecio, Packera, Barkleyanthus, Pittocaulon, Psacalium, Telanthophora,</i> alcaloides pirrolizid&iacute;nicos, eremofilano, <i>Roldana, Robinsonecio.</i></font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><a href="/pdf/jmcs/v51n3/v51n3a7.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>References</b></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">1.&nbsp;Heywood, V. H.; Harborne, J. B. <i>The Biology and Chemistry of Compositae.</i> Academic Press, London <b>1977</b>.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=4899155&pid=S1870-249X200700030000700001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">2.&nbsp;Barkley, A. M. A Geo&#45;Historial Perspective on the Distribution and Variation in <i>Senecio</i> s.l. (Asteraceae, Senecioneae) in Mexico and C. America. In: <i>PI. Syst. Evol.</i> &#91;supl. 4.&#93; <b>1995,</b> 113&#45;119.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=4899157&pid=S1870-249X200700030000700002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">3.&nbsp;Barkley, T. M.; Clark, B. L.; Funston, A. M. <i>Proceedings of the International Compositae Conference,</i> Vol. 1, Kew Gardens, 1994, Hind D. J. M. Editor, Royal Botanical Gardens Kew, <b>1996,</b> 613&#45;620.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=4899159&pid=S1870-249X200700030000700003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    ]]></body>
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