<?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>0250-5460</journal-id>
<journal-title><![CDATA[Revista Boliviana de Química]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Bol. Quim]]></abbrev-journal-title>
<issn>0250-5460</issn>
<publisher>
<publisher-name><![CDATA[Universidad Mayor de San Andrés]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0250-54602022000100019</article-id>
<article-id pub-id-type="doi">10.34098/2078-3949.39.1.3</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Characterization of terpenoids from pseudognaphalium gaudichaudianum (dc) anderb, wira-wira by gc/ms, active principles with possible use in COVID-19 infection prevention]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castañeta]]></surname>
<given-names><![CDATA[Grover]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Huayhua-Llusco]]></surname>
<given-names><![CDATA[Aleyda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tarqui]]></surname>
<given-names><![CDATA[Santiago]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez]]></surname>
<given-names><![CDATA[Abel F.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,aff1  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2022</year>
</pub-date>
<volume>39</volume>
<numero>1</numero>
<fpage>19</fpage>
<lpage>25</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_arttext&amp;pid=S0250-54602022000100019&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_abstract&amp;pid=S0250-54602022000100019&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_pdf&amp;pid=S0250-54602022000100019&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Pseudognaphalium gaudichaudianum (DC.) Anderb., (Asteraceae) is a small herbaceous plant that grows in the heights and in mountainous places. Known by the vernacular name &#8220;Wira Wira'', it is well reputed in traditional medicine by aymara communities to treat respiratory diseases like cough, common cold, bronchitis, and pneumonia in the highlands of Bolivia. Due of its expectorant properties, P. gaudichaudianum has been proposed as a phytodrug to prevent infection by COVID-19, in infusions and vaporization. In this study, the terpenoids from its essential oil were characterized by Gas Chromatography Coupled to Mass Spectrometry (GC/MS). The analysis showed the presence of 1 monoterpenoid, 11 sesquiterpenoids, 2 diterpenoids and 4 minor unidentified compounds. The major compounds identified were &#946;-Eudesmene (16.35%), Rosifoliol (15.29%), Guaia 1(10), 11-diene (15.20%), Guaia 6,9 diene (14.46%), &#945;-Pinene (11.32%) and &#945;-Guaiene (6,16%).]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Pseudognaphalium gaudichaudianum (DC.) Anderb., (Asteraceae) es una pequeña planta herbácea que crece en las alturas y en lugares montañosos, conocida con el nombre vernacular de &#8220;Wira Wira&#8221;. Tiene buena reputación en la medicina tradicional de las comunidades aimaras de las tierras altas de Bolivia para tratar enfermedades respiratorias como tos, resfriado común, bronquitis y neumonía. Por sus propiedades expectorantes, P. gaudichaudianum se ha propuesto como fitofármaco para prevenir la infección por COVID-19, en infusiones y vaporización. En este estudio, los terpenoides de su aceite esencial se caracterizaron por cromatografía de gases acoplada a espectrometría de masas (GC/MS). El análisis mostró la presencia de 1 monoterpenoide, 11 sesquiterpenoides, 2 diterpenoides y 4 compuestos menores no identificados. Los principales compuestos identificados fueron &#946;-Eudesmene (16,35%), Rosifoliol (15,29%), Guaia 1(10), 11-dieno (15,20%), Guaia 6,9 dieno (14,46%), &#945;-Pineno (11,32%). y &#945;-Guaieno (6,16%).]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[&#945;-Pinene]]></kwd>
<kwd lng="en"><![CDATA[Asteraceae]]></kwd>
<kwd lng="en"><![CDATA[Covid-19]]></kwd>
<kwd lng="en"><![CDATA[Essential oil]]></kwd>
<kwd lng="en"><![CDATA[Terpenoids]]></kwd>
<kwd lng="en"><![CDATA[Wira-wira]]></kwd>
<kwd lng="es"><![CDATA[&#945;-Pineno]]></kwd>
<kwd lng="es"><![CDATA[Asteraceae]]></kwd>
<kwd lng="es"><![CDATA[Covid-19]]></kwd>
<kwd lng="es"><![CDATA[Aceite esencial]]></kwd>
<kwd lng="es"><![CDATA[Terpenoides]]></kwd>
<kwd lng="es"><![CDATA[Wira-wira]]></kwd>
</kwd-group>
</article-meta>
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