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betulinic acid/dichloromethane
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Synthesis and cytotoxic activity of new betulin and betulinic acid esters with conjugated linoleic acid (CLA).
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The synthesis of new ester derivatives of betulin (3a-c) and betulinic acid (4) with conjugated linoleic acid isomers (CLA; in a mixture of 43.4% 9c, 11t; 49.5% 10t, 12c; 7.1% other isomers) is presented. Esterification was carried out with N,N'-dicyclohexylcarbodiimide (DCC) as the coupling agent
Simultaneous determination of betulin and betulinic acid in white birch bark using RP-HPLC.
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A simple procedure is described for the simultaneous extraction and determination of betulin and betulinic acid in white birch bark. The extraction was checked using different solvents: dichloromethane, ethyl acetate, acetone, chloroform, methanol and 95% ethanol (aqueous solution, v/v). It was
Induction of cell cycle arrest and apoptosis by betulinic acid-rich fraction from Dillenia suffruticosa root in MCF-7 cells involved p53/p21 and mitochondrial signalling pathway.
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BACKGROUND
Dillenia suffruticosa (Family: Dilleniaceae) or commonly known as "Simpoh air" in Malaysia, is traditionally used for treatment of cancerous growth including breast cancer.
OBJECTIVE
D. suffruticosa root dichloromethane extract (DCM-DS) has been reported to induce G0/G1 phase cell cycle
Dillenia suffruticosa dichloromethane root extract induced apoptosis towards MDA-MB-231 triple-negative breast cancer cells.
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BACKGROUND
Dillenia suffruticosa is traditionally used for treatment of cancerous growth including breast cancer in Malaysia.
OBJECTIVE
Dillenia suffruticosa is a well-known medicinal plant in Malaysia for the treatment of cancer. Nevertheless, no study has been reported the cytotoxicity of this
[Study on the chemical constituents of mori cortex].
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OBJECTIVE
To study the chemical constituents of Mori Cortex.
METHODS
The compounds from the dichloromethane-methanol extracts were isolated by the silica gel column chromatography, and their structures were identified by the spectral analysis and chemical evidence.
RESULTS
Eight compounds were
Isolation and structure elucidation of an isoflavone and a sesterterpenoic acid from Henriettella fascicularis.
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A new isoflavone, 4',5,7-trihydroxy-6,8-dimethylisoflavone (1), and a new sesterterpenoic acid (2), together with five known compounds, lichexanthone (3), (-)-pinoresinol (4), betulinic acid, palmitic acid, and beta-sitosterol, were isolated from a dichloromethane extract of the branches of
Cholinesterase inhibitory triterpenoids from the bark of Garcinia hombroniana.
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Context: Garcinia hombroniana Pierre, known as manggis hutan in Malaysia is a rich source of xanthones and benzophenones.
OBJECTIVE
This study was aimed to isolate and characterize potential cholinesterase inhibitors from the extracts of G. hombroniana bark and investigate their interactions with
Chemical constituents of Rhododendron formosanum show pronounced growth inhibitory effect on non-small-cell lung carcinoma cells.
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The aim of the present study was to investigate whether Rhododendron formosanum Hemsl. (Ericaceae), an endemic species in Taiwan, exhibits antineoplastic potential against non-small-cell lung carcinoma (NSCLC). R. formosanum was successively extracted with methanol and then separated into
Antiproliferative Activity of (-)-Rabdosiin Isolated from Ocimum sanctum L.
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Background:Ocimum sanctum L. (holy basil; Tulsi in Hindi) is an important medicinal plant, traditionally used in India. Methods: The phytochemical study of the nonpolar (dichloromethane 100%) and polar (methanol:water; 7:3) extracts yielded fourteen compounds. Compounds
A new isoflavonol and other constituents from Cameroonian propolis and evaluation of their anti-inflammatory, antifungal and antioxidant potential
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Propolis is rich in diverse bioactive compounds. Propolis samples were collected from three localities of Cameroon and used in the study. Column chromatography separation of propolis MeOH:DCM (50:50) extracts yielded a new isoflavonol, 2-hydroxy-8-prenylbiochanin A (1) alongside
Mosquito larvicidal constituents from Lantana viburnoides sp viburnoides var kisi (A. rich) Verdc (Verbenaceae).
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OBJECTIVE
Lantana viburnoides sp viburnoides var kisi is used in Tanzania ethnobotanically to repel mosquitoes as well as in traditional medicine for stomach ache relief. Bioassay-guided fractionation and subtraction bioassays of the dichloromethane extract of the root barks were carried out in
An antifungal gamma-pyrone and xanthones with monoamine oxidase inhibitory activity from Hypericum brasiliense.
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A new gamma-pyrone (hyperbrasilone), three known xanthones (1,5-dihydroxyxanthone, 5-hydroxy-1-methoxyxanthone and 6-deoxyjacareubin) and betulinic acid have been isolated from a dichloromethane extract of stems and roots of Hypericum brasiliense. Their structures were established by spectroscopic
Constituents of Quinchamalium majus with potential antitubercular activity.
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Antitubercular bioassay-guided fractionation of the dichloromethane extracts of the above-ground biomass and roots of Quinchamalium majus led to the identification of six known constituents, betulinic acid (1), daucosterol (2), 5,7-dihydroxyflavone (3), oleanolic acid (4), (-)-2S-pinocembrin (5),
Pyranocoumarin and triterpene from Millettia richardiana.
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From the stem bark of a Madagascan endemic plant, Millettia richardiana Baill., lonchocarpenin and betulinic acid were isolated and their structures established by spectroscopic methods. The analysis of dichloromethane fractions suggested the presence of beta-amyrin, lupeol, palmitic acid, linoleic
Antiprotozoal activities of Millettia richardiana (Fabaceae) from Madagascar.
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With at least 60% of the Millettia species (Fabaceae) being in medicinal use, we found it relevant to assess the potential antiprotozoal and antifungal activities of Millettia richardiana. Water and methanol crude extracts of the stem barks from M. richardiana and the six fractions resulting from
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