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polyalthia/bactericida
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9 resultados
Evaluation of the antimicrobial property of Polyalthia longifolia var. pendula: isolation of a lactone as the active antibacterial agent from the ethanol extract of the stem.
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Bioassay guided fractionation of the ethanolic extract of Polyalthia longifolia var. pendula stem, which showed promising antibacterial activity against thirteen Gram-positive and nine Gram-negative organisms, furnished (3S,4R)-3,4,5-trihydroxypentanoic acid-1,4-lactone (1) as the active principle.
Three new methylated Δ8-pregnene steroids from the Polyalthia laui-derived fungus Stemphylium sp. AZGP4-2.
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Three new methylated Δ8-pregnene steroids, stemphylisteroids A-C (1-3) were isolated from the medicinal plant Polyalthia laui-derived fungus Stemphylium sp. AZGP4-2. Their structures were elucidated by the detailed analysis of comprehensive spectroscopic data. The absolute configuration
A new norsesquiterpene from the roots of Polyalthia laui.
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One new norsesquiterpene polyalone A (1), and one new natural product 9-keto-cyclocolorenone (2), along with three known analogues (3-5) were isolated from the roots of Polyalthia laui. Their structures were elucidated by the detailed analysis of comprehensive spectroscopic data. All compounds were
Two new lanostane triterpenoids from the branches and leaves of Polyalthia oblique.
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Two new lanostane triterpenoids, 20-hydroxyeuphorbol-7-one (1) and 15α-hydroxyeuphorbol-7,11-dione (2), together with four known triterpenoids, euphorbol-7-one (3), friedelin (4), stigmast-4-ene-6α-ol-3-one (5), stigmasta-4-en-3,6-dione (6), were isolated from ethanol extract of the branches and
Synergistic Effect of Polyalthia longifolia leaf and Antibiotics against Clinical Isolates of Methicillin-Resistant Staphylococcus aureus (MRSA) by Microscopic Technique.
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Antimicrobial activity of clerodane diterpenoids from Polyalthia longifolia seeds.
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The diterpenoids 16alpha-hydroxy-cleroda-3,13 (14)-Z-diene-15,16-olide (1) and 16-oxo-cleroda-3, 13(14)-E-diene-15-oic acid (2), isolated from the hexane extract of the seeds of Polyalthia longifolia, demonstrated significant antibacterial and antifungal activities.
New antimicrobial alkaloids from the roots of Polyalthia longifolia var. pendula.
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Bioassay-guided isolation studies on the root extract of Polyalthia longifolia var. pendula possessing significant antibacterial activity led to the isolation of three new alkaloids pendulamine A (1), pendulamine B (2) and penduline (3) along with stigmasterol 3-O-beta-D-glucoside, allantoin, the
Antimicrobial activity of various parts of Polyalthia longifolia var. pendula: isolation of active principles from the leaves and the berries.
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Methanol extracts of leaves, stem, twigs, green berries, flowers, roots, root-wood and root-bark of Polyalthia longifolia var. pendula, were tested for their antibacterial and antifungal potentials. Bioassay monitored isolation work on the methanol extract of leaves and berries which possess
Antimicrobial screening of plants used for traditional medicine in the state of Perak, Peninsular Malaysia.
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Seventy-two extracts (methanol) obtained from the leaves, barks, and roots of 50 plant species used in the traditional medicine of Perak, Peninsular Malaysia, have been screened for antibacterial and antifungal activities. Peristrophe tinctoria, Polyalthia lateriflora, Knema malayana, Solanum
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