Limonoids
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. New Limonoids from Dictyoloma vandellianum and Sohnreyia excelsa: Chemosystematic Considerations
Molecular phylogenetic studies separated and united a group of genera that constituted the Spathelia-Ptaeroxylon clade, in which Dictyoloma and Sohnreyia have been included. Our taxonomic interest in the Dictyoloma vandellianum and Sohnreyia excelsa stimulated an investigation of both species searching for limonoids. Leaves from D. vandellianum afforded the
J. Braz. Chem. Soc.. Publicado em: 21/10/2019
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2. Terpenoids isolated from Azadirachta indica roots and biological activities
Abstract The chemical study of roots from Azadirachta indica A. Juss., Meliaceae, led to the isolation of two new terpenoids, limonoid morenolide and diterpene 17-hydroxy-sandaracopimar-8,15-dien-11-one, in addition to the four well-known limonoids nimbinene, nimbinal, nimbandiol and salannin, and three diterpenoids nimbidiol, ferruginol, and 6,7-dehydroferr
Rev. bras. farmacogn.. Publicado em: 2019-02
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3. Phragmalin Limonoids from Swietenia macrophylla and Their Antifeedant Assay against Mahogany Predator
The purification of the hexanic extract from the leaves of a native variety of mahogany collected in Santarém (Pará, Brazil) afforded eight new phragmalin limonoids along with eight known compounds. This variety, according to field observations, should be considered resistant against the specialist insect Hypsipyla grandella, that attacks the terminal shoo
J. Braz. Chem. Soc.. Publicado em: 2018-08
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4. Phytochemicals and antimicrobial potentials of mahogany family
Drug resistance to human infectious diseases caused by pathogens lead to premature deaths through out the world. Plants are sources for wide variety of drugs used for treating various diseases. Systematic screening of medicinal plants for the search of new antimicrobial drug candidates that can inhibit the growth of pathogens or kill with no toxicity to host
Rev. bras. farmacogn.. Publicado em: 2015-02
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5. CHEMICAL STUDY OF Hortia superba (Rutaceae) AND INVESTIGATION OF THE ANTIMYCOBACTERIAL ACTIVITY OF CRUDE EXTRACTS AND CONSTITUENTS ISOLATED FROM Hortia SPECIES
In this paper, the chemical study of Hortia superba and antimycobacterial potential of Hortia species were investigated. Crude extracts and limonoids, alkaloids, dihydrocinnamic acid derivatives and coumarins isolated from Hortia superba, Hortia oreadica and Hortia brasiliana were evaluated against Mycobacterium tuberculosis H37Rv, Mycobacterium kansasii and
Quím. Nova. Publicado em: 2015-01
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6. Limonoides isolados dos frutos de Carapa guianensis Aublet (Meliaceae)
Six limonoids were isolated in hexane extract obtained from the seeds and pericarps of Carapa guianensis. The structures of the limonoids were determined based on the analysis of High Resolution Mass Spectroscopy and Nuclear Magnetic Resonance (uni-and bi-dimensional experiments) data. This is the first report of isolation of the limonoid 6α-acetoxy-7-deace
Quím. Nova. Publicado em: 2012
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7. Estudo em raiz e ráquis foliar de spathelia excelsa: fitoquímica e atividade frente ao fungo Moniliophthora perniciosa associado ao cupuaçuzeiro (Theobroma grandiflorum)
The chemical composition of Spathelia excelsa (Krause) R. S. Cowan & Brizicky was investigated and the limonoids harrisonin (1) and deacetylspathelin (2), alkaloids folinin and casimiroin mixture (3a, b), plus a further casimiroin (3b) were identified in methanol extract from root. The CH2Cl2 extract from the rachis yielded protolimonoid 3β-angeloyl-21,24-e
Quím. Nova. Publicado em: 2012
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8. Constituintes químicos e atividade inseticida dos extratos de frutos de Trichilia elegans E T. catigua (Meliaceae)
Phytochemical investigation of the fruits extracts of Trichilia elegans and Trichilia catigua (Meliaceae) has led to the identification of the limonoids 11β-acetoxyobacunone, cedrelone, methylangolensate and epimeric mixture of photogedunin besides known coumarins (scoparone, scopoletin, umbeliferone) and the steroids stigmasterol, β-sitosterol, sitostenon
Química Nova. Publicado em: 2009
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9. 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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10. INSECTICIDAL ACTIVITY OF Trichilia SPECIES AGAINST ON FALL ARMYWORM Spodoptera frugiperda. / Atividade inseticida de espécies de trichilia frente à lagarta-do-cartucho do milho spodoptera frugiperda
This work presents the phytochemical study and biological assays carried out with organic extracts of fruits and seeds from Trichilia claussenii, T. elegans and inflorescence from T. catigua against S. frugiperda. Among the extracts assayed, the methanol extracts of seeds from T. claussenii and inflorescence from T. catigua presented the highest insecticidal
Publicado em: 2008
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11. Phytochemistry of Raputia praetermissa (Rutaceae) and search for candidates of herbicides inhibitors of photosysnthesis from natural products / Fitoquímica de Raputia praetermissa (Rutaceae) e busca por candidatos a herbicidas inibidores da fotossíntese a partir de produtos naturais
The species R. praetermissa is native from Amazonia. Plant recently classified, it does not give biological and/or chemical in the literature. This fact has led to this study, which can lead to the correct chemosystematic positioning of the genus within the family Rutaceae. From the phytochemical study of the roots of R. praetermissa concluded in 2005, mainl
Publicado em: 2008
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12. Limonoids from andiroba oil and Cedrela fissilis and their insecticidal activity
Nove limonóides foram isolados de Carapa guianensis e Cedrela fissilis. Entre eles, a 1,2-diidro-3beta-hidroxi-7-desacetoxi-7-oxogedunina é uma substância inédita. Além disso, alguns deslocamentos químicos da xilocensina k foram corrigidos e os dados de RMN ¹H da 7-desacetilgedunina são descritos pela primeira vez na literatura. Seis dos limonóides
Journal of the Brazilian Chemical Society. Publicado em: 2006-06