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11 risultati
A novel flavonoid and furoquinoline alkaloids from Vepris glomerata and their antioxidant activity.
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The dichloromethane extract of the aerial part of the plant Vepris glomerata (Rutaceae) yielded a new flavonoid, which was accorded the trivial name veprisinol (1), together with four known furoquinoline alkaloids: haplopine-3,3'-dimethylallyl ether (2), anhydroevoxine (3), evoxine (4) and
Antimicrobial Furoquinoline Alkaloids from Vepris lecomteana (Pierre) Cheek & T. Heller (Rutaceae).
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Three new prenylated furoquinoline alkaloids named lecomtequinoline A (1), B (2), and C (3), together with the known compounds anhydroevoxine (4), evoxine (5), dictamnine (6), N-methylflindersine (7), evoxanthine (8), hesperidin, lupeol, β-sitosterol, stigmasterol,
A rotameric tryptamide alkaloid from the roots of Vepris lecomteana (Pierre) Cheek & T. Heller (Rutaceae).
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A rotameric tryptamide alkaloid (1a-1b) was isolated from the methanolic extract of the roots of Vepris lecomteana together with the known compounds anhydroevoxine (2), lecomtequinoline C (3), evoxine (4), N-methylflindersine (5), evoxanthine (6), hesperidin, lupeol, β-sitosterol and stigmasterol.
New cytotoxic alkaloids from the wood of Vepris punctata from the Madagascar rainforest.
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Bioassay-guided fractionation of a CH(2)Cl(2)/MeOH extract of the wood of Vepris punctata resulted in the isolation of three new furoquinoline alkaloids, 5-methoxymaculine (1), 5,8-dimethoxymaculine (2), and 4,5,6,7,8-pentamethoxyfuroquinoline (3), in addition to the four known alkaloids
[Alkaloids from the root bark of Vepris pilosa (author's transl)].
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Veprisinium salt, a novel antibacterial quaternary alkaloid from Vepris louisii.
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Furoquinoline Alkaloids from Vepris heterophylla.
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An azole, an amide and a limonoid from Vepris uguenensis (Rutaceae).
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The limonoid derivative, methyl uguenenoate, the azole, uguenenazole, and the amide, uguenenonamide, together with the known furoquinoline alkaloids flindersiamine and maculosidine, and syringaldehyde have been isolated from the root of the East African Rutaceae Vepris uguenensis. While methyl
Acridones from Vepris fitoravina and Vepris macrophylla.
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Four acridones were isolated from the leaves of VEPRIS FITORAVINA and VEPRIS MACROPHYLLA (Rutaceae). Three of these alkaloids were identified as arborinine, evoxanthine, and 1,3-dimethoxy-10-methylacridan-9-one by comparison with authentic samples or by comparison of their properties with published
Potential of Central, Eastern and Western Africa Medicinal Plants for Cancer Therapy: Spotlight on Resistant Cells and Molecular Targets.
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Cancer remains a major health hurdle worldwide and has moved from the third leading cause of death in the year 1990 to second place after cardiovascular disease since 2013. Chemotherapy is one of the most widely used treatment modes; however, its efficiency is limited due to the resistance of cancer
New cytotoxic terpenoids from the wood of Vepris punctata from the Madagascar Rainforest.
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Continuation of the chemical examination of the cytotoxic constituents of the wood of Vepris punctata resulted in the isolation of the two new terpenoids 1 and 2 and eight known compounds, glechomanolide (3), isogermafurenolide, (E,E)-germacra-1(10),4,7(11)-triene, alpha-amyrin, lupeol, lupeyl
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