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Cytotoxic triterpenoid saponins of Albizia gummifera from the Madagascar rain forest.
Bioassay-guided fractionation of an EtOH extract obtained from the roots of the Madagascan plant Albizia gummifera led to the isolation of three new cytotoxic oleanane-type triterpenoid saponins,Expand
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A novel cytotoxic guttiferone analogue from Garcinia macrophylla from the Suriname rainforest.
Bioassay-guided fractionation of the EtOAc extract of the twigs of Garcinia macrophylla from Suriname produced the known benzophenone, guttiferone A (1), and a new guttiferone analogue, guttiferone GExpand
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Cytotoxic compounds from Mundulea chapelieri from the Madagascar Rainforest.
Bioassay-guided fractionation of methanolic extracts of Mundulea chapelieri resulted in the isolation of two new flavonoids, isomundulinol (1) and 3-deoxy-MS-II (2), in addition to the eight knownExpand
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Cytotoxic clerodane diterpenoids and their hydrolysis products from Casearia nigrescens from the rainforest of Madagascar.
Bioassay-guided fractionation of the cytotoxic leaf and flower extract of Casearia nigrescens led to the isolation of four new clerodane diterpenoids, designated caseanigrescens A-D (1-4). TheseExpand
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Two bioactive saponins from Albizia subdimidiata from the Suriname rainforest.
Bioassay-guided fractionation of a methanol extract of Albizia subdimidiata using the engineered yeast strains 1138, 1140, 1353, and Sc7 of Saccharomyces cerevisiae as the bioassay tool resulted inExpand
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Disruption of neophobia, conditioned odor aversion, and conditioned taste aversion in rats with hippocampal lesions.
Previous studies have implicated the hippocampus in the acquisition of conditioned taste aversions. However, the effect of hippocampal (HPC) lesions on the acquisition of conditioned aversions to theExpand
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Cytotoxic cardenolide glycosides of Roupellina (Strophanthus) boivinii from the Madagascar rainforest.
Bioassay-guided fractionation of an ethanol extract of Roupellina (Strophanthus) boivinii from the rainforest of Madagascar afforded the six new cardenolide glycosides boivinides 1-6, as well as theExpand
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Host conservatism, host shifts and diversification across three trophic levels in two Neotropical forests
Host–parasite systems have been models for understanding the connection between shifts in resource use and diversification. Despite theoretical expectations, ambiguity remains regarding the frequencyExpand
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New cytotoxic oleanane saponins from the infructescences of Polyscias amplifolia from the Madagascar rainforest.
Bioassay-guided fractionation of an ethanolic extract of the infructescences of Polyscias amplifolia resulted in the isolation of two new oleanolic acid saponins, polyfoliolides A (1) and B (2), inExpand
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Two new triterpene esters from the twigs of Brachylaena ramiflora from the Madagascar rainforest.
Bioassay-guided fractionation of a CH(2)Cl(2)/MeOH extract of the small twigs of Brachylaena ramiflora var. ramiflora resulted in the isolation of the two new triterpene esters 1 and 2 and five knownExpand
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