<?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>S1870-249X2016000300125</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Synthesis and Modification of the Amyloid Peptide Sequence 37-42 of A&#946;42 (A&#946;PP): Efficient Synthesis of N-methylated Peptides, Expanding the Tools for Peptide Research]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rosas-Valdéz]]></surname>
<given-names><![CDATA[María Elena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Escalante]]></surname>
<given-names><![CDATA[Jaime]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bustos-Jaimes]]></surname>
<given-names><![CDATA[Ismael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Regla]]></surname>
<given-names><![CDATA[Ignacio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Boto]]></surname>
<given-names><![CDATA[Alicia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma del Estado de Morelos  ]]></institution>
<addr-line><![CDATA[Cuernavaca Morelos]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,UNAM Facultad de Medicina ]]></institution>
<addr-line><![CDATA[México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Estudios Superiores Zaragoza ]]></institution>
<addr-line><![CDATA[México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,CSIC Instituto de Productos Naturales y Agrobiología ]]></institution>
<addr-line><![CDATA[La Laguna ]]></addr-line>
<country>Spain</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>125</fpage>
<lpage>134</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-249X2016000300125&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-249X2016000300125&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-249X2016000300125&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: We report the synthesis and characterization of N-alkyl modified peptides by efficient coupling of N-methyl amino acids in solution phase. As a model peptide, the segment 37-42 (GGVVIA) of the A&#946;-42 amyloid peptide derived from the amyloid precursor protein (A&#946;-PP) was chosen. This peptide and its derivatives with N-methyl groups on Val40 and Ile41 residues were synthesized and characterized. Because the synthesis was performed in solution-phase, the procedure can be easily scaled up for the production of larger amounts of the peptides described in this work or any linear N-methyl peptide with potential therapeutic application.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Se describe aquí la síntesis y caracterización de péptidos N-alquil modificados por acoplamiento eficiente en solución de N-Metil aminoácidos. Se eligió como péptido modelo el segmento de 37-42 (GGVVIA) del péptido amiloide A&#946;-42 derivado de la proteína precursora de amiloide (A&#946;-PP). Este péptido y sus derivados con grupos N-metilo en los residuos Val40 y Ile41 fueron sintetizados y caracterizados. Dado que ésta síntesis se realizó en solución, el procedimiento puede escalarse fácilmente y producir cantidades suficientes de los péptidos descritos, pudiendo aplicar ésta técnica en otros péptidos N-metilados lineales con posible potencial aplicación terapéutica.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Amyloid]]></kwd>
<kwd lng="en"><![CDATA[Peptides]]></kwd>
<kwd lng="en"><![CDATA[A&#946;PP]]></kwd>
<kwd lng="en"><![CDATA[N-Methyl Amino Acids]]></kwd>
<kwd lng="es"><![CDATA[Amiloide]]></kwd>
<kwd lng="es"><![CDATA[Péptidos]]></kwd>
<kwd lng="es"><![CDATA[A&#946;PP]]></kwd>
<kwd lng="es"><![CDATA[N-Metil aminoácidos]]></kwd>
</kwd-group>
</article-meta>
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