Isoflavonoids
Mostrando 1-12 de 33 artigos, teses e dissertações.
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1. METABOLIC PROFILING AND CYTOTOXIC ACTIVITY OF METHANOL EXTRACTS FROM CHAMAECRISTA DUCKEANA (P. BEZERRA & A. FERN.) H. S. IRWIN & BARNEBY (LEGUMINOSAE, CAESALPINIOIDEAE)
The genus Chamaecrista comprises more than 330 species, with only a few studies on their chemical composition and biologic activities. In this study, the phytochemical profile of leaf, stems, and fruits extracts of the C. duckeana were examined by UPLC ESI HRMS analysis to determine possibly bioactive constituents. The antioxidant activity was carried out th
Química Nova. Publicado em: 2022
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2. ISOFLAVONOIDES DA TRIBO DALBERGIEAE: UMA CONTRIBUIÇÃO QUIMIOSSISTEMÁTICA PARA A SUBFAMÍLIA PAPILIONOIDEAE
Plants from Fabaceae family have several secondary metabolites and high biological potential. The subfamily Papilionoideae (Fabaceae) has 28 tribes, of which Dalbergieae comprises 49 genera and 1325 species. Isoflavonoids are chemotaxonomic markers of Papilionoideae and have important biological properties. This review describes the isoflavonoids and biologi
Quím. Nova. Publicado em: 2020-09
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3. Isoflavonoid composition and biological activity of extracts from soybean seedlings treated by different elicitors
Abstract Time-course and dose-response experiments were carried out to establish the ability for synthesizing isoflavonoids of soybean seedlings (cv. Soyica P34) treated with salicylic (SA) and isonicotinic acids (INA). Then, 25 structurally-related compounds were evaluated for their isoflavonoid-eliciting activity. Next, the antimicrobial and antioxidant ac
An. Acad. Bras. Ciênc.. Publicado em: 26/07/2018
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4. Antioxidant α-amylase inhibitors flavonoids from Iris germanica rhizomes
ABSTRACT A new isoflavonoid glycoside, iridin A (9), along with eight known isoflavonoids: irilone 4'-methyl ether (1), irilone (2), irisolidone (3), irigenin S (4), irigenin (5), irilone 4'-O-β-D-glucopyranoside (6), iridin S (7), and iridin (8) were separated from Iris × germanica L., Iridaceae, rhizomes. The structural elucidation of these flavonoids wa
Rev. bras. farmacogn.. Publicado em: 2017-04
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5. INTERACTION OF CHALCONES WITH CT-DNA BY SPECTROPHOTOMETRIC ANALYSIS AND THEORETICALSIMULATIONS
Chalcones are open chain molecules precursors of flavonoids and isoflavonoids, found spread in edible plants. Because they are easily accessible trough Claisen Shmidt condensation, a great variety of derivatives are available. They have also shown potential in pharmacological and biological applications. It is known that chalcone derivatives display a role i
Quím. Nova. Publicado em: 2016-09
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6. Application of a Quantitative HPLC-ESI-MS/MS Method for Flavonoids in Different Vegetables Matrices
Plant flavonoids have been increasingly studied for its importance in plant metabolism, inter-species interactions and human health-promoting effects. Each botanical species has a distinct flavonoid profile, and as such, this work aimed to develop and apply a high-performance liquid chromatography coupled to electrospray ionization tandem mass spectrometry (
J. Braz. Chem. Soc.. Publicado em: 2016-03
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7. Inhibition of Saccharomyces cerevisiae Pdr5p by a natural compound extracted from Brazilian Red Propolis
Multidrug resistance of cancer cells and pathogenic microorganisms leading to the treatment failure of some forms of cancer or life-threatening bacterial or fungal infections is often caused by the overexpression of multidrug efflux pumps belonging to the ATP-binding cassette transporters superfamily. The multidrug resistance of fungal cells often involves t
Revista Brasileira de Farmacognosia. Publicado em: 12/08/2011
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8. Changes in concentration of isoflavonoids after cis-jasmone spraying in the leaves of two soybean cultivars.
2010
LATIN AMERICAN MEETING OF CHEMICAL ECOLOGY. Publicado em: 2011
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9. Isolation and identification of formononetin of João Pessoa-PB-Brazil red propolis, seasonal studies and evaluation of their biological activities / Isolamento e identificação de formononetina da propolis de João Pessoa - PB, estudo de sua sazonalidade e avaliação de suas atividades biologicas
Propolis is a resinous substance produced by the honeybee Apis mellifera. Bees use propolis to seal holes and to protect the beehive. To produce propolis the honeybee uses resins of leaf buds and buds, resinous exudates and other parts of plant tissues. Propolis is used as a folk medicine since 3000 BC. Numerous biological properties have been found includin
Publicado em: 2009
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10. Isolamento e identificação de compostos com atividade antioxidante de uma nova variedade de própolis brasileira produzida por abelhas da espécie Apis mellifera / Isolation and identification of compounds with antioxidant activity in a novel variety of Brazilian propolis produced by bees from the species Apis mellifera
Propolis is known for its wide range of biological activities, such as antioxidant, antibacterial, anti-inflammatory, antiviral, among others. Its composition varies according to the region where it is collected and there is a great chemical diversity among the different types of propolis. The main constituents of propolis are the phenolic compounds, which a
Publicado em: 2007
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11. An in silico analysis of the key genes involved in flavonoid biosynthesis in Citrus sinensis
Citrus species are known by their high content of phenolic compounds, including a wide range of flavonoids. In plants, these compounds are involved in protection against biotic and abiotic stresses, cell structure, UV protection, attraction of pollinators and seed dispersal. In humans, flavonoid consumption has been related to increasing overall health and f
Genetics and Molecular Biology. Publicado em: 2007
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12. Estudo fitoquimico de leguminosas : Harleyodendron Unifoliolatum e Holocalyx balansae. Isolamento, determinação estrutural e atividade biologica / Phytochemical analysis of leguminosas : Harleyodendron Unifoliolatum Cowan e Holocalyx Balansae Micheli. Isolation, structural elucidation and biological activities
The phytochemical study of roots extracts from Harleyodendron unifoliolatum and Holocalyx balansae, both belonging to the family Leguminosae, resulted in the isolation of nine isoflavonoids (four pterocarpans, two isoflavans and three isoflavanones) and one phytosteroid being that seven isoflavonoids are now described for the first time. The molecular struct
Publicado em: 2005