Phenylpropanoids
Mostrando 1-12 de 51 artigos, teses e dissertações.
-
1. Volatile Constituents of Floral Scents from Encyclia cordigera (Kunth) Dressler and E. randii (Barb. Rodr.) Porto & Brade (Orchidaceae)
Encyclia cordigera is native from Central America tropical region, and Encyclia randii occurs at Brazilian Amazon environment domains. Floral concentrates from both Encyclia species were extracted, analyzed by gas chromatography-mass spectrometry, and identified compounds belong to terpenoids, phenylpropanoids, and fatty acid derivatives classes. Primary con
Journal of the Brazilian Chemical Society. Publicado em: 2022
-
2. ASARONE-DERIVED PHENYLPROPANOIDS AND ISOQUINOLINE-DERIVED ALKALOIDS FROM THE BARK OF Duguetia pycnastera (Annonaceae) AND THEIR CYTOTOXICITIES
The phytochemical investigation of the hexane and methanol extracts from the bark of Duguetia pycnastera Sandwith (Annonaceae) afforded seven known compounds, two asarone-derived phenylpropanoids and five isoquinoline-derived alkaloids. The asarones, γ-asarone (1-allyl-2,4,5-trimethoxybenzene) and 2,4,5-trimethoxy-styrene were isolated of the hexane extract
Quím. Nova. Publicado em: 2020-12
-
3. Anti-Helicobacter pylori and Anti-inflammatory Properties of Eugenia uniflora L.
Abstract Helicobacter pylori is a bacterium that reaches half of the world population and it’s recognized as the main cause of chronic gastritis and peptic ulcer. In this study, we evaluated the anti-H. pylori, antioxidant and immunomodulatory activities of the methanolic (MeOH) extract of Eugenia uniflora leaves and chemical profile. Anti-H. pylori activi
Braz. arch. biol. technol.. Publicado em: 20/12/2019
-
4. Comparison of Volatile Profile and Antioxidant Activity of Piper divaricatum G. Meyer (Piperaceae) Using Cuttings and Cell Tissue
In this study, P. divaricatum (Piperaceae) plants were subcultured by cuttings and cell tissue in order to carry out a comparison of the volatile profile, phenolic compounds, and antioxidant activity. Propagation by cuttings used vermiculite substrate and Murashige-Skoog (MS) medium in the absence of growth regulators and rooting started at 15 days of growth
J. Braz. Chem. Soc.. Publicado em: 24/10/2019
-
5. CHEMICAL COMPOSITION AND ACARICIDAL ACTIVITIES OF Indigofera suffruticosa ESSENTIAL OIL AGAINST TWO-SPOTTED SPIDER MITE
Laboratory bioassays on fumigation, ovicidal and oviposition deterrence activity of the essential oil from Indigofera suffruticosa and its constituents [eugenol, (E)-asarone, dill apiole, (Z)-asarone, thymol, (E)-nerolidol and safrole] against Tetranychus urticae were carried out. Components of Indigofera leaf oil were characterized by gas chromatography (GC
Quím. Nova. Publicado em: 02/05/2019
-
6. Toona sinensis: a comprehensive review on its traditional usages, phytochemisty, pharmacology and toxicology
Abstract Toona sinensis (Juss.) M.Roem, Meliaceae, a deciduous plant native to eastern and southeastern Asia, is widely used in Traditional Chinese Medicine. This paper was aimed to summarize the current advances in traditional usage, phytochemistry, pharmacology and toxicology of T. sinensis. In this review, various types of data of T. sinensis are discusse
Rev. bras. farmacogn.. Publicado em: 2019-02
-
7. Central nervous system and analgesic profiles of Lippia genus
Abstract Many people use medicinal plants to relieve disorders related to the central nervous system, such as depression, epilepsy, anxiety and pain, even though the effectiveness of most of them has not yet been proven through scientific studies. Plants of the Lippia genus, Verbenaceae, are widely used in ethnobotany as a food, for seasoning and in antisept
Rev. bras. farmacogn.. Publicado em: 2019-02
-
8. CHEMICAL PROFILES OF ESSENTIAL OILS AND FATTY ACIDS FROM Erythrina velutina
Chemical analysis involving gas chromatography coupled to mass spectrometry of the essential oils of red and orange flowers from E. velutina revealed a predominance of phenylpropanoids in both samples. However, qualitative and quantitative differences were found in the compositions. (E)-Asarone (16.22 ± 0.23%) and (E)-caryophyllene (12.22 ± 0.11%) were ide
Quím. Nova. Publicado em: 2019-01
-
9. Simultaneous Quantification of Three Chemical Types Bioactive Compounds in Radix Isatidis and Its Relevant Pharmaceutical Dosage Forms by HPLC-DAD
A simple and rapid high performance liquid chromatography coupled with diode array detector (HPLC-DAD) method was developed for simultaneous quantification of three chemical types of bioactive compounds including an alkaloid (epigoitrin), six nucleosides (uracil, cytidine, hypoxanthine, uridine, guanosine and adenosine), and four phenylpropanoids (syringin,
J. Braz. Chem. Soc.. Publicado em: 2017-07
-
10. Folk medicine, phytochemistry and pharmacological application of Piper marginatum
ABSTRACT Piper marginatum Jacq., Piperaceae, is a widely distributed Neotropical species abundant in the Caribbean, exhibiting a characteristic winged petiole and a heart-shaped leaf, its two vegetative landmarks for rapid identification. The species has been employed by traditional indigenous cultures for its reputed medicinal properties. The plant is most
Rev. bras. farmacogn.. Publicado em: 2016-12
-
11. Chemical Composition and Cytotoxic Activity of the Root Essential Oil from Jatropha ribifolia (Pohl) Baill (Euphorbiaceae)
The essential oil of roots of Jatropha ribifolia, obtained by hydrodistillation, was characterized in terms of its chemical composition by chromatographic method with flame ionization detection (GC-FID) and gas chromatography coupled to electron ionization mass spectrometry (GC-MS). The analyses and identification pointed by mass fragmentation pattern and re
J. Braz. Chem. Soc.. Publicado em: 2015-02
-
12. Chemical profiling of six samples of Brazilian propolis
Six samples of Brazilian propolis from Minas Gerais and Paraná states were analyzed to identify the constituents (GC/MS and HPLC/MS) and to determine their contents (HPLC and external standardization). All samples contained characteristic constituents of green propolis, but the samples from Minas Gerais had higher contents of prenylated phenylpropanoids and
Quím. Nova. Publicado em: 2013