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4 rezultatus
Differential Sequestration of a Cytotoxic Vismione from the Host Plant Vismia baccifera by Periphoba arcaei and Pyrrhopyge thericles.
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We sought to compare the abilities of the specialist Lepidoptera Pyrrhopyge thericles (Hesperiidae) and the generalist Periphoba arcaei (Saturniidae) to assimilate three highly cytotoxic compounds from their larval host plant, Vismia baccifera (Clusiaceae) and to determine whether either insect
HPLC-UV/PAD and HPLC-MS(n) analyses of leaf and root extracts of Vismia guineensis and isolation and identification of two new bianthrones.
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In order to evaluate the possible use of the leaves instead of the roots of Vismia guineensis as a new source for the traditional use of this drug, the chemical composition of both organs were compared by HPLC-UV/PAD and HPLC-MS analyses. The leaves are analysed here for the first time. The results
Bioactive constituents from three Vismia species.
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Bioassay-guided fractionation of the methanolic extracts of Vismia baccifera, V. jefensis, and V. macrophylla against human breast, CNS, and lung cancer cell lines resulted in the isolation of a new compound, ferruginin C (1), and seven known compounds, ferruginins A (2) and B (3), vismin (4),
Anthranoid compounds with antiprotozoal activity from Vismia orientalis.
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A phytochemical investigation of the 80% ethanolic extract of stem bark of Vismia orientalis Engl. (Guttiferae or Clusiaceae), a plant used in traditional medicine in Tanzania, resulted in the isolation and spectroscopic characterisation of 3-geranyloxy-6-methyl-1,8-dihydroxyanthraquinone, emodin,
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