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Pyrrolizidine alkaloids from Heliotropium megalanthum.
Two pyrrolizidine alkaloids, megalanthonine (1) and lycopsamine (2), have been isolated from Heliotropium megalanthum. The structure of the novel compound 1 was determined by spectroscopic methods.Expand
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Bioactive saturated pyrrolizidine alkaloids from Heliotropium floridum
Abstract Here we describe the isolation and structural determination of the new saturated pyrrolizidine monoester alkaloids, 3′-acetyltrachelanthamine, floridine, floridinine and floridimine, alongExpand
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Antileishmanial, antitrypanosomal, and cytotoxic screening of ethnopharmacologically selected Peruvian plants
Extracts (34) from eight plant species of the Peruvian Amazonia currently used in traditional Peruvian medicine, mostly as antileishmanial remedies and also as painkiller, antiseptic, antipyretic,Expand
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Behavioral and Sublethal Effects of Structurally Related Lower Terpenes onMyzus persicae
The sesquiterpenes farnesol, caryophyllene oxide, and 2,10-bisaboladien-1-one (patent #9602748) and the monoterpenes citronellol and geraniol were tested for settling inhibition and chronic effectsExpand
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Natural Product-Based Biopesticides for Insect Control
Abstract Biopesticides offer a more sustainable solution to pest control than synthetic alternatives. As chemical pesticides are withdrawn owing to resistance problems or because they are no longerExpand
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Pyrrolizidine alkaloids from Heliotropium bovei
Abstract Heliotropium bovei was shown to contain lasiocarpine, europine, 5′-acetyllasiocarpine and a new alkaloid 7-acetyleuropine. Lasiocarpine N -oxide and 5′-acetyllasiocarpine N -oxide are alsoExpand
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In vitro activity of C20-diterpenoid alkaloid derivatives in promastigotes and intracellular amastigotes of Leishmania infantum.
The in vitro anti-proliferative effects are described of several atisine-type diterpenoid alkaloids against the protozoan parasite Leishmania infantum, which causes human visceral leishmaniasis andExpand
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Defensive chemistry of Senecio miser.
Three eremophilanolides, 1alpha-acetoxy-8beta-methoxy-10betaH-eremophil-7(11)-en-8alpha,12-olide (1); 1alpha-angeloyloxy-6beta-hydroxy-8beta-methoxy-10betaH-eremophil-7(11)-en-8alpha,12-olide (2);Expand
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Indole alkaloids from Geissospermum reticulatum.
Ten indole alkaloids were isolated from Geissospermum reticulatum, seven (1-7) from the leaves and three (8-10) from the bark. Seven were aspidospermatan-type alkaloids (1-3, 5-9), including fourExpand
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