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mahonia conferta/antibiótico
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8 resultados
Endophytic Diaporthe sp. LG23 Produces a Potent Antibacterial Tetracyclic Triterpenoid.
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A new lanostanoid, 19-nor-lanosta-5(10),6,8,24-tetraene-1α,3β,12β,22S-tetraol (1), characterized by the presence of an aromatic B ring and hydroxylated at C-1, C-3, C-12, and C-22, was isolated from an endophytic fungus, Diaporthe sp. LG23, inhabiting leaves of the Chinese medicinal plant Mahonia
Induced production of steroids by co-cultivation of two endophytes from Mahonia fortunei.
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A new ergosterol derivative, 23R-hydroxy-(20Z,24R)-ergosta-4,6,8(14),20(22)-tetraen-3-one (1), and a biosynthetically related known compound, (22E,24R)-ergosta-4,6,8(14),22-tetraen-3-one (2), were isolated from the co-culture between endophytic fungus Pleosporales sp. F46 and endophytic bacterium
Fupyrones A and B, two new α-pyrones from an endophytic fungus, Fusarium sp. F20.
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Two new α-pyrones, fupyrones A and B (1 and 2) and a biosynthetically related known α-pyrone, 4-methyl-5,6-dihydro-2H-pyran-2-one (3), were isolated from an endophytic fungus, Fusarium sp. F20, harbored in the stems of the Chinese medicinal plant Mahonia fortunei. Their structures were determined on
Oxygen activation by photoexcited protoberberinium alkaloids from Mahonia aquifolium.
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Protoberberinium salts, i.e. berberine (I), palmatine (II) and jatrorrhizine (III) prepared from Mahonia aquifolium (Pursh) Nutt. belong to isoquinoline alkaloids possessing interesting biological activity (e.g. antibacterial, antimalarial, antitumor). The characteristic UV/Vis absorption band
Antimicrobial activity of Mahonia aquifolium crude extract and its major isolated alkaloids.
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The crude extract of Mahonia aquifolium (Pursh) Nutt. stem bark and its two main protoberberine alkaloids, berberine and jatrorrhizine, were tested for their in vitro antimicrobial activity. Twenty strains of coagulase-negative staphylococci and 20 strains of Propionibacterium acnes isolated from
Antimicrobial activity of four species of Berberidaceae.
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Ethanolic extracts of the stems and leaves of Nandina domestica, Mahonia fortunei, Mahonia bealei and Berberis thunbergii were tested for their antibacterial and antifungal activity. Most of the extracts have been proved to be active against Gram(+) bacteria.
Isolation and characterization of antimicrobial compounds in plant extracts against multidrug-resistant Acinetobacter baumannii.
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The number of fully active antibiotic options that treat nosocomial infections due to multidrug-resistant Acinetobacter baumannii (A. baumannii) is extremely limited. Magnolia officinalis, Mahonia bealei, Rabdosia rubescens, Rosa rugosa, Rubus chingii, Scutellaria baicalensis, and Terminalia chebula
Chamiside A, a Cytochalasan with a Tricyclic Core Skeleton from the Endophytic Fungus Chaetomium nigricolor F5.
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Chamiside A (1), a novel cytochalasan with a new 6/6/5-fused tricyclic core skeleton, was isolated from an endophytic fungus, Chaetomium nigricolor F5, harbored in the medicinal plant Mahonia fortunei. Its structure was unambiguously determined by extensive spectroscopic analyses, measurement of
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