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Stranica 1 iz 25 rezultatima
Anti cancer activity on Graviola, an exciting medicinal plant extract vs various cancer cell lines and a detailed computational study on its potent anti-cancerous leads.
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Nature is the world's best chemist: Many naturally occurring compounds have very complicated structures that present great challenges to chemists wishing to determine their structures or replicate them. The plant derived herbal compounds have a long history of clinical use, better patient tolerance
Potential anti-tumor-promoting activity of 3alpha-hydroxy-D:A-friedooleanan-2-one from the stem bark of Mallotus philippensis.
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Four known friedelane-type triterpenoids, friedelin ( 1), 3-hydroxy-D:A-friedoolean-3-en-2-one ( 2), 2beta-hydroxy-D:A-friedooleanan-3-one ( 3), and 3alpha-hydroxy-D:A-friedooleanan-2-one ( 4), and two known lupane-type triterpenoids, lupeol ( 5) and betulin ( 6), were isolated from the stem bark of
Evaluation of Polygonum bistorta for anticancer potential using selected cancer cell lines.
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The chloroform and hexane fractions and their sub-fractions of Polygonum bistorta (Polygonaceae) were evaluated for their cytotoxic activity against P338 (Murine lymphocytic leukaemia), HepG2 (Hepatocellular carcinoma), J82 (Bladder transitional carcinoma), HL60 (Human leukaemia), MCF7 (Human breast
First report of compounds from an Ancistrocarpus species: Triterpenoids from A. densispinosus Oliv. (Malvaceae)
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The stem bark of Ancistrocarpus densispinosus Oliv. exhibited triterpenoids, including the rare fernane-type, fern-9(11)-ene-2α,3β-diol (1) a possible chemotaxonomically distinct biomolecule for the genus. Other triterpenoids that were isolated from this plant include the ursane-type
Phenolic contents, antioxidant and cytotoxic activities of Elaeocarpus floribundus Blume.
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Elaeocarpus floribundus is higher plant that has been used as traditional medicine for treating several diseases. There is no previous report on phytochemicals and bioactivity studies of this species. In this investigation, triterpenoids friedelin, epifriedelanol and β-sitosterol were isolated from
New sesquiterpenes and phenolic compound from Ficus foveolata.
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Two new eudesmane-type sesquiterpenes, named foveolide A (1) and foveoeudesmenone (2), one new sesquiterpenoid dimer, foveolide B (3) and a new phenolic compound, foveospirolide (4), were isolated along with six known compounds, including 4(15)-eudesmene-1β, 6α-diol (5), 4(15)-eudesmene-1β, 5α-diol
Cytotoxic effects of mammea type coumarins from Calophyllum brasiliense.
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Calophyllum brasiliense (Clusiaceae) is a big tree from the Tropical Rain Forests of the American continent. The organic extracts from the leaves yielded coumarins of the mammea type: mammea A/BA, A/BB, B/BA, B/BB, C/OA, C/OB, B/BA cyclo F, B/BB cyclo F, and isomammeigin. The triterpenoids friedelin
A cytotoxic butenolide, two new dolabellane diterpenoids, a chroman and a benzoquinol derivative formosan Casearia membranacea.
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Investigation of a cytotoxic chloroform-soluble fraction of the stem of Casearia membranacea (Flacourtiaceae) led to the isolation of five new compounds, including one butenolide, casealactone (1), one chroman, caseamemin (2), two dolabellane diterpenoids, casearimene A (3) and casearimene B (4),
Triterpenes from Garcia parviflora. Cytotoxic evaluation of natural and semisynthetic friedelanes.
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Three new friedelane-type triterpenes, 1,2-dehydro-2,3-secofriedelan-3-oic acid (1), 1β-hydroxyfriedelin (2), and 3β-hydroxyfriedelan-23-oic acid (3), and the known compounds friedelin-3,4-lactone (4), acetyl aleuritolic acid (5), 4-hydroxy-5-propionyl-1,3-di-O-methylpyrogallol, elemicin, and
A phytochemical investigation of Alchornea latifolia.
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A phytochemical investigation of the chloroform leaf extract of Alchornea latifolia has been undertaken. Along with the triterpenoids taraxerone, friedelin, epifriedelinol, and taraxerol, the plant also contains seco-3,4-friedelin (dihydroputranjivic acid) (1) and seco-3,4-taraxerone (2). These
Triterpene compounds isolated from Acer mandshuricum and their anti-inflammatory activity.
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In our preliminary screening study on the anti-inflammatory activity, a new triterpene compound, aceranol acetate (1), was isolated along with five known compounds: beta-amyrin acetate (2); glutinol acetate (3); friedelin (4); glutinol (5); (3beta)-d-glucopyranoside-stigmast-5-en-3-yl (6), from the
Cytotoxic xanthones from Garcinia penangiana Pierre.
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Two new xanthones, characterized as 4-(1,1-dimethylprop-2-enyl)-1,3,5,8-tetrahydroxyxanthone (1) and penangianaxanthone (2), with three known xanthones, cudratricusxanthone H (3), macluraxanthone C (4) and gerontoxanthone C (5), as well as friedelin and stigmasterol were isolated from the leaves of
Cytotoxic caged-polyprenylated xanthonoids and a xanthone from Garcinia cantleyana.
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Phytochemical studies on the leaves and trunk bark of Garcinia cantleyana yielded five caged-xanthonoids including one tetra- and four tri-prenylated xanthones, cantleyanone A (1), 7-hydroxyforbesione (2) and cantleyanones B-D (4-6), as well as a simple xanthone,
Analysis of constituents of the eastern Nigeria mistletoe, Loranthus micranthus linn revealed presence of new classes of osteogenic compounds.
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BACKGROUND
Mistletoe extracts (decoctions) are used traditionally in eastern Nigeria for the management of bone pain, post menopausal syndrome and diabetes amongst several other ailments. While scientific evidence supporting its folkloric use as an antidiabetic agent has been documented, the
Report: Cytotoxic activity of phytochemicals from the stem bark of Calophyllum castaneum.
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Phytochemical investigation on the dichloromethane stem bark extract of Calophyllum castaneum resulted in the isolation of five compounds, namely isoblancoic acid (1), blancoic acid (2), euxanthone (3), friedelin (4) and friedelinol (5). All these compounds were isolated for the first time from this
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