Quinolone Alkaloids
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Leishmanicidal and Antimicrobial Activities of 4-Quinolone Alkaloids from Stems of the Medicinal Plant Waltheria indica (Malvaceae) and Their Chemotaxonomic Significance
A chemical investigation of the stem of Waltheria indica (Malvaceae) yielded twelve 4-quinolone alkaloids, which were primarily waltheriones. These were waltherione A (1), waltherione B (2), waltherione C (3), waltherione G (4), waltherione H (5), waltherione J (6), waltherione L (7), waltherione P (8), chamaedrone (9), 8-deoxy-antidesmone (10), antidesmone
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. Estudo dos alcaloides quinolônicos de Waltheria brachypetala Turcz : isolamento, determinação estrutural, biogênese, atividades fungitóxica e anticolinesterase / Estudo dos alcaloides quinolônicos de Waltheria brachypetala Turcz : isolamento, determinação estrutural, biogênese, atividades fungitóxica e anticolinesterase / Study of quinolone alkaloids from waltheria brachypetala turcz (malvaceae): isolation, structural elucidation, biogenesis and fungitoxical and anticholinesterase activities / Study of quinolone alkaloids from waltheria brachypetala turcz (malvaceae): isolation, structural elucidation, biogenesis and fungitoxical and anticholinesterase activities
Waltheria brachypetala Turcz (Malvaceae) é uma planta de ocorrência endêmica do nordeste brasileiro, sendo amplamente utilizada na medicina tradicional como agente anti-fúngico, anti-inflamatório, bem como para o tratamento de bronquite, laringite e distúrbios do sistema nervoso central. Neste trabalho de doutoramento objetivou-se a investigação dos
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/06/2012
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3. Anticholinesterase activity evaluation of alkaloids and coumarin from stems of Conchocarpus fontanesianus
Conchocarpus fontanesianus (A. St.-Hill.) Kallunki & Pirani, Rutaceae, popularly known as pitaguará, is a native and endemic tree from São Paulo and Rio de Janeiro States, Brazil. Based in the information that anticholinesterasic derivatives could act as new prototypes to treatment of Alzheimer disease, this work describes the fractionation guided by evalu
Revista Brasileira de Farmacognosia. Publicado em: 29/11/2011
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4. Cumarinas e alcaloides de Rauia resinosa (rutaceae)
The genus Rauia, that is poorly chemically studied, belongs to the Rutaceae family. This family has been known to contain a large variety of secondary metabolites. Our phytochemical investigation of the stem and leaves of Rauia resinosa has led to the identification of the structurally related coumarins: murralongin (1), murrangatin (2), munomicrolin (3), mu
Química Nova. Publicado em: 2010
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5. Phytochemical study and evaluation of the antimicrobial activity of species from Hortia (Rutaceae): H. Oreadica, H. Brasiliana e H. Superba / Estudo fitoquímico e avaliação do potencial antimicrobiano de espécies de Hortia (Rutaceae) : H. oreadica, H. brasiliana e H. superba
The phytochemical study of Hortia in this work aims to contribute with the chemosystematics of the Rutaceae and with the best classification of the genus inside the family. The study of the species H. oreadica, H. brasiliana and H. superba led us to isolate 15 compounds, such as the dihydrocinnamic acids derivatives 3-phenyl-[2,6-dimethoxy-(3,4:5,6)-2,2- dim
Publicado em: 2008
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6. Selectivity in the extraction of 2- quinolone alkaloids with supercritical CO2
This work describes the conditions for selective extraction of the alkaloids in Andreadoxa flava (Kallunki). The experiments were performed in a pilot plant SFE 500, in the following conditions. Extractor pressures 206.8 x 10(5), 241.3 x 10(5), 275.8 x 10(5) and 310.3 x 10(5) Pascal and pressures of 137.9 x 10(5), 69.0 x 10(5) and 55.2 x 10(5) Pascal for sep
Brazilian Journal of Chemical Engineering. Publicado em: 2006-12
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7. PHYTOCHEMICAL AND ANTIMICROBIAL ACTIVITY STUDY OF Waltheria douradinha Saint Hilaire / ESTUDO FITOQUÍMICO E DA ATIVIDADE ANTIMICROBIANA DE Waltheria douradinha Saint Hilaire
Native species of the flora from South Brazil are the aim of the research of the Núcleo de Pesquisa de Produtos Naturais of Federal University of Santa Maria, Brazil. One of the most studied families is the Sterculiaceae and, in that family, there is the Waltheria douradinha Saint Hilaire specie, study purpose of this master degree work. W. douradinha, popu
Publicado em: 2006
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8. Estudo fitoquímico de Helietta puberula (Rutaceae), Simarouba versicolor (Simaroubaceae) e busca de um processo de microencapsulação de compostos ativos visando o controle de formigas cortadeiras. / PHYTOCHEMICAL INVESTIGATION OF Helietta puberula (RUTACEAE), Simarouba versicolor (SIMAROUBACEAE) AND SEARCH OF MICROENCAPSULATION TECHNICAL OF THE ACTIVES COMPOUNDS FOR THE CONTROL OF LEAF-CUTTING ANTS.
This work involved the bioassay-guided study of Helietta puberula (Rutaceae) e Simarouba versicolor (Simaroubaceae). The biossays were carried out with leaf-cutting ants Atta sexdens rubropilosa, antifungal activity against the symbiotic fungus Leucoagaricus gongylophorus and inhibition of the enzymatic activity of pectinases. The results obtained with extra
Publicado em: 2006
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9. Phytochemical investigation of plant from Rutaceae and Meliaceae families aiming for the isolation of target substances to the developing of new antichagastic and antileishmaniasis drugs. / Estudo fitoquímico de plantas das famílias Rutaceae e Meliaceae visando o isolamento de substâncias protótipos para o desenvolvimento de novos fármacos antichagásicos e antileischmanioses.
This work involved the bioassay-guided study of Almeidea coerulea, A. rubra, Conchocarpus heterophyllus, Galipea carinata (Rutaceae), and Trichilia ramalhoi (Meliaceae). The bioassays were carried out with T. cruzi GAPDH and L. tarentolae APRT enzymes, and trypomastigote forms of T. cruzi as model assays. The results obtained with extracts and fractions show
Publicado em: 2004