Mostrando 10 resultados de: 62
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Natural Product Communications(5)
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Avances en Quimica(4)
Journal of Natural Products(4)
Tetrahedron Letters(4)
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Química orgánica(37)
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scopus(62)
Chalcone-flavanone equilibrium in the isomeric mixture: 2',3,4,4',6'-Pentahydroxychalcone and eriodictyol from Stevia lucida
ArticleAbstract: From the leaves and stems of Stevia lucida Lagasca (Asteraceae), an equilibrium chalcone-flavanone iPalabras claves:2',3,4,4',6'-pentahydroxychalcone, Chalcones, Equilibrium mixture, Eriodictyol, Flavanones, SteviaAutores:Juan Manuel Amaro-Luis, Pablo A. Chacón-Morales, Santiago Carolina Dugarte del RosarioFuentes:scopusChemical composition of the essential oil of gynoxys meridana from mérida, Venezuela
ArticleAbstract: The volatile components from the fresh leaves of Gynoxys meridana Cuatrec. were obtained by hydrodisPalabras claves:ASTERACEAE, Essential oil, Gynoxys, Gynoxys meridana, Senecioneae TribeAutores:Hernández J., Juan Manuel Amaro-Luis, Pouységu L., Quideau S., Rojas-Fermin L.B., Usubillaga A.Fuentes:scopusChemistry of N-functionalized spirodihydroquinolines. Unusual access to the 3-methyl-4-(2-oxo-pyrrolidinyl-1)spiro[indane-1,1′-cyclohexanes] from 1-(3-cyanopropyl)-3,4-dihydrospiro[quinoline-2,1′-cyclohexanes]
ArticleAbstract: The transformation of N-substituted 3,4-dihydrospiro[quinoline-2,1′-cyclohexanes] 2 and 3 has been ePalabras claves:Aminospiroindanes, Intramolecular Friedel-Crafts alkylation, SpirodihydroquinolinesAutores:Bahsas A., Juan Manuel Amaro-Luis, Kouznetsov V.V., Palma A., Rozo W., Stashenko E.E.Fuentes:scopusBiflavones from the leaves of Retrophyllum rospigliosii
ArticleAbstract:Palabras claves:Biflavones, Chemotaxonomy, Podocarpaceae, Retrophyllum rospigliosiiAutores:Amesty A., Bahsas A., Juan Manuel Amaro-Luis, Montealegre R.Fuentes:scopusBio-Guided Isolation of New Compounds from Baccharis spp. as Antifungal against Botrytis cinerea
ArticleAbstract: Baccharis genus Asteraceae is widely used in traditional treatment against fever, headache, hepatobiPalabras claves:Antifungal, Baccharis, Botrytis cinereaAutores:Ezzanad A., Juan Manuel Amaro-Luis, Pinedo-Rivilla C., Pinto A.A., Ruano-González A., Sánchez-Maestre R.Fuentes:scopusAn ent-kaurenolide from Stevia lucida
ArticleAbstract: Chemical analysis of aerial parts of Stevia lucida yielded five known ent-kaurene derivatives and aPalabras claves:Compositae, Diterpenes, ent-kaurenes, ent-kaurenolides., Eupatoriae, Stevia lucidaAutores:Juan Manuel Amaro-LuisFuentes:scopus2-Allyl-N-benzyl substituted α-naphthylamines as building blocks in heterocyclic synthesis. New and efficient syntheses of benz[e]naphtho[1,2-b]azepine and naphtho[1,2-b]azepine derivatives
ArticleAbstract: A new series of 13-acetyl-7,12-dihydro-7-ethylbenz[e]naphtho[1,2-b]azepine (4a-d) and 2-aryl-4-hydroPalabras claves:Amino-Claisen rearrangement, Benz[e]naphtho[1,2-b]azepines, Intramolecular dipolar 1,3-cycloaddition, Intramolecular Friedel-Crafts alkylation, Tetrahydronaphtho[1,2-b]azepinesAutores:Bahsas A., Juan Manuel Amaro-Luis, Palma A., Stashenko E.E., Yépez A.Fuentes:scopus2’,3,4-trihydroxychalcone, phloretin and calomelanone from Stevia lucida. The first chalcones reported in Stevia Genus
ArticleAbstract: The known chalcones 2’,3,4-trihydroxychalcone (1), phloretin (2) and calomelanone (3) were isolatedPalabras claves:Chalcones, Dihydrochalcones, NMR, SteviaAutores:Juan Manuel Amaro-Luis, Pablo A. Chacón-Morales, Santiago Carolina Dugarte del RosarioFuentes:scopus4-Aryl(benzyl)amino-4-heteroarylbut-1-enes as building blocks in heterocyclic synthesis. 4.<sup>1</sup> synthesis of 4,6-dimethyl-5-nitro(amino)- 2-pyridylquinolines and their antiparasitic activities
ArticleAbstract: New nitro- and aminoquinoline derivatives containing a pyridyl nucleus were synthesized from 6,8-disPalabras claves:Aminoquinolines, Antichagasic, Cytotoxic properties, Nitroquinolines, TrichomonacidalAutores:Bahsas A., Fernández Portillo C., Gómez-Barrio A., Juan Manuel Amaro-Luis, Kouznetsov V.V., Montero Pereira D., Muelas Serrano S., Nogal-Ruiz J.J., Ochoa C., Tibaduiza B., Vargas Méndeź L.Y.Fuentes:scopus4-N-aryl(benzyl)amino-4-hetaryl-1-butenes as building blocks in heterocyclic synthesis. 1. New route to 4,6-dimethyl-2-pyridylquinolines from the 4-N-p-methylphenylamino-4-pyridyl-1-butenes
ArticleAbstract: Mediated-acid intramolecular cyclisation of 4-N-p-methylphenylamino-4-pyridyl-1-butenes 4-6 was usedPalabras claves:Autores:Bahsas A., Juan Manuel Amaro-Luis, Kouznetsov V.V., Stashenko E.E., Vargas Méndeź L.Y.Fuentes:scopus