Chemical constituents from Triplaris americana L. (Polygonaceae)

Oliveira, Patrícia Emanuella S.; Conserva, Lúcia M.; Lemos, Rosângela P. Lyra

doi:10.1016/j.bse.2007.06.001

Cited by 9 publications

(7 citation statements)

References 15 publications

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“…From leaves, stem barks and stems of G. grazielae, beside a phytosteroid (sitostenone), were isolated six triterpenes (α-amyrin acetate, cycloartenone, 3β,19α,23-trihydroxyurs-12-ene, and ursolic, 3-β-O-β-Dglucopyranosylquinovic, 3β,6β,19α,23-tetrahydroxyurs-12-en-28-oic acids;Lima et al 2009). On the other hand, from leaves and stems of C. mollis a pentacyclic triterpene (simiarenol), a diterpene (trans-phytol), a benzenoid (vanillic acid), and two phytosteroids (sitostenone and sitosterol) were isolated (Oliveira et al 2008a) while from fruits and stems of T. americana, five derivative phenolic compounds (moupinamide, gallic acid, quercetin 3-O-α-L-arabinofuranoside, quercetin, and vanicoside D) were obtained (Oliveira et al 2008b). Subsequently, evaluation of these compounds will be needed to identify the active component of these species.…”

Section: Larvicidal Activitymentioning

confidence: 99%

Larvicidal activity of 94 extracts from ten plant species of northeastern of Brazil against Aedes aegypti L. (Diptera: Culicidae)

et al. 2010

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In an effort to find effective and affordable ways to control of Aedes aegypti L. (Diptera: Culicidae), the larvicidal activities of 94 extracts from ten plant species belonging to eight families [Guettarda grazielae and Spermacoce verticillata (Rubiaceae), Coccoloba mollis and Triplaris americana (Polygonaceae), Eschweilera ovata (Lecytidaceae), Merremia aegyptia (Convolvulaceae), Ouratea nitida (Ochnnaceae), Protium heptaphyllum (Burseraceae), Rourea doniana (Connaraceae), and Tovomita brevistaminea (Guttiferae)], widely found in the northeast of Brazil, were initially screened at 250 microg/mL. Nineteen of the 94 extracts from six plant species (C. mollis, G. grazielae, M. aegyptia, R. doniana, S. verticillata, and T. americana) showed significant activity (>75% mortality) against the fourth instar larvae. Some of these extracts showed 100% mosquito larvae mortality, with LD(50) values lower 200 microg/mL. When compared to synthetic insecticide Temephos (LD(50) 8.7 microg/mL), two of them, hexane (LD(50) 12.1 microg/mL) and ethyl acetate (LD(50) 51.6 microg/mL) extracts from stems of R. doniana and G. grazielae, respectively, were the most effective. The isolation and purification of these extracts are in progress and evaluation of these compounds will be needed to identify the active component.

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Section: Larvicidal Activitymentioning

confidence: 99%

Larvicidal activity of 94 extracts from ten plant species of northeastern of Brazil against Aedes aegypti L. (Diptera: Culicidae)

et al. 2010

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“…The Polygonaceae family comprises 51 genera and about 1100 species, widely distributed in tropical and temperate regions. The plants belonging to this family are known to produce a large number of biologically important molecules such as alkaloids, benzenoids, carotenoids, coumarins, depsídeos, stilbenes, (Oliveira et al, 2008). Phytochemical studies on species of genus Triplaris have identified the presence triterpenes, amide, phenylpropanoid glycoside, benzenoid, and flavonols simple and glycoside (Oliveira et al, 2008;Hussein et al, 2005;Macedo et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

GC-MS analysis of esterified fatty acids obtained from leaves and seeds of Triplaris gardneriana Wedd.

Macêdo¹,

Lavor²,

Silva³

et al. 2016

Afr. J. Pharm. Pharmacol.

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Triplaris gardneriana Wedd. belongs to the family Polygonaceae. In Brazil, the plant is known as "Pajéu". The plant has a traditional use in folk medicine for the treatment of some human diseases. In this study, it was realized for first time, the extraction and characterization by gas chromatographymass spectrometry (GC-MS) of the fixed oils from the leaves and seeds of T. gardneriana collected at different times and it was evaluated the antioxidant and antibacterial activities. The esters were identified by comparing the mass spectra obtained with those of the equipment database. The antioxidant activity was evaluated by the methods of radical scavenging 2,2-diphenyl-1-picrylhydrazyl (DPPH) and co-oxidation of β-carotene against linoleic acid. The antibacterial effect was evaluated by the microdilution broth method. In the fixed oil of the leaves were identified 22 compounds, totaling 61.53%. Methyl palmitate (15.14%) and methyl oleate (14.35%) were the majoritary compounds. For the sample of the seeds fixed oil, 13 compounds were identified, representing 97.81%. Among these, 10-Octadecenoic acid, methyl ester (45.53%) was identified as majoritary constituent. The oils do not show antioxidant activity, but showed moderate antibacterial activity. The fatty acid composition of the fixed oils showed differences, noting a greater variety of constituents in the leaf oil. The presence of these compounds in the studied plant is important phytochemically because it contributes to the chemical and pharmacological knowledge of this specie.

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“…The peaks m/z 169 and 147 that may correspond to a rhamnose unit in compound 3 (Figure 2c) may also be a coumaroyl unit, but there is no report of this acyl group in flavonols isolated in the family. It therefore suggests that it is a quercetin-ramnobioside (Oliveira, 2008).…”

Section: Lc-ms Analysismentioning

confidence: 99%

“…Therefore, assays like this are important, since they guide the selection of plant species with potential sun protection factor in a simple and inexpensive manner. According to the literature, the genus has been little explored from the phytochemical point of view, previously reporting only the isolation of five flavonol glycosides and gallic acid from the ethyl acetate fraction of the leaves of T. cumingiana (Hussein et al, 2005) and phenylpropanoid, one flavonol glycoside and gallic acid on leaves, stems and fruit of T. americana (Oliveira et al, 2008). The presence of glycosylated flavonols and gallic acid in both plant species may serve as useful chemotaxonomic markers for the genus.…”

Section: Photoprotective Activitymentioning

confidence: 99%

“…The plants of the family Polygonaceae are known to produce a number of important secondary metabolites such as flavonoids. We emphasized the class of flavonols occurring in 25% of the genera of the family, including Triplaris (Oliveira et al, 2008). Recently, plants that have antioxidant activity have been of great interest, given the distinct roles of free radical presence in the body (Alves, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Identification of flavonol glycosides and in vitro photoprotective and antioxidant activities of Triplaris gardneriana Wedd

Macêdo¹,

Almeida²,

Ferraz³

et al. 2015

J. Med. Plants Res.

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Triplaris gardneriana belongs to the family Polygonaceae, known for producing a number of biologically important molecules. The present study was aimed at identifying and quantify its total flavonoid content and determining the antioxidant and photoprotective potential of the plant's leaves. The flavonoids present in the extract and fractions were analyzed using Liquid chromatography-mass spectrometry (LC-MS). The antioxidant activity was evaluated using 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging assay and autoxidation of β-carotene. The absorbance of the extracts was measured at different concentrations between 260 to 400 nm wavelengths. Calculation of sun protection factor (SPF) was determined using the formula developed by Mansur. The total flavonoid content was determined by the method developed by Dewanto. In the study, the following four flavonols were identified: quercetinhexoside (2a), quercetin-pentoside (2b), quercetin-ramnobioside (2c) and myricetin-hexoside (2d). The crude ethanol extract, ethyl acetate, and methanol fractions showed higher flavonoid content and also exhibited excellent antioxidant and photoprotective activity. The SPF values were best observed for the crude ethanol extract and for the chloroform, ethyl acetate and methanol fractions. The good antioxidant and photoprotective potential can be attributed to the presence of flavonols identified for the first time in this species.

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Chemical constituents from Triplaris americana L. (Polygonaceae)

Cited by 9 publications

References 15 publications

Larvicidal activity of 94 extracts from ten plant species of northeastern of Brazil against Aedes aegypti L. (Diptera: Culicidae)

Larvicidal activity of 94 extracts from ten plant species of northeastern of Brazil against Aedes aegypti L. (Diptera: Culicidae)

GC-MS analysis of esterified fatty acids obtained from leaves and seeds of Triplaris gardneriana Wedd.

Identification of flavonol glycosides and in vitro photoprotective and antioxidant activities of Triplaris gardneriana Wedd

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