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dicentrine/okoteja
Veza se sprema u međuspremnik
6 rezultatima
Antinociceptive effects of a chloroform extract and the alkaloid dicentrine isolated from fruits of Ocotea puberula.
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Prijava Registriraj se
The present work describes the chemical characterization of a chloroform fraction (CF) obtained from an extract of Ocotea puberula (Lauraceae) fruits, and preliminary antinociceptive analysis of CF and the alkaloid dicentrine, isolated from this fraction. CF (30-300 mg/kg, p. o.) caused dose-related
New aporphine alkaloids of Ocotea minarum.
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Fourteen aporphine alkaloids were isolated from the leaves of a Brazilian Lauracea, Ocotea minarum Nees (Mez). The known alkaloids were identified through their physico-chemical properties as: leucoxylonine (VII), dicentrine (IV), ocoteine (V), leucoxine (VI), ocopodine (VIII), predicentrine (IX),
Mutagenicity and recombinagenicity of Ocotea acutifolia (Lauraceae) aporphinoid alkaloids.
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The somatic mutation and recombination test (SMART) in wing cells of Drosophila melanogaster was used to test the mutagenic and recombinogenic activities of five aporphinoid alkaloids isolated from Ocotea acutifolia: thalicminine (1), (+)-dicentrine (2), (+)-ocoteine (3), (+)-6S-ocoteine N-oxide
Isolation and biochemical characterization of a new topoisomerase I inhibitor from Ocotea leucoxylon.
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In a continuation of our search for potential tumor inhibitors from plants, we found that a crude extract from Ocotea leucoxylon showed selective activity typical of inhibitors of the enzyme topoisomerase I in a yeast assay for DNA-damaging agents. Using a bioassay-directed fractionation approach,
Alkaloids of Ocotea brachybotra.
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Aporphine, proaporphine and morphinane alkaloids were isolated from the leaves of a Brazilian Lauracea, Ocotea brachybotra (Meiss.) Mez. The known alkaloids were identified through their physico-chemical properties as: (I) (+/-)-glaziovine, (II) dicentrine, (III) ocopodine, (IV) cassynthicine, (V)
Larvicidal activity against Aedes aegypti of some plants native to the West-Central region of Brazil.
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A total of 42 ethanolic extracts from 30 different plant species, native to the Pantanal and Cerrado of the West-Central region of Brazil, have been evaluated for their larvicidal activity against Aedes aegypti larvae, the vector of dengue and dengue hemorrhagic fevers. Among the extracts tested,
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