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A New Clerodane Diterpene and Other Constituents from Ajuga chamaepitys ssp. laevigata
Abstract From Ajuga chamepitys ssp. laevigata, a new clerodane diterpene, ajugalaevigatic acid, has been isolated besides five known compounds, a diterpene, (13S)-15-hydroxylabd-8(17)-en-19-oic acid,Expand
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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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Cytotoxic diterpenoids from two lianas from the Suriname rainforest.
Bioassay-guided fractionation of the MeOH and EtOAc fractions of extracts of two lianas collected in Suriname has led to the isolation of five new diterpenoids, humirianthone 1,Expand
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Determination of alkali metal ion binding selectivities of calixarenes by matrix-assisted laser desorption ionization and electrospray ionization in a quadrupole ion trap
Abstract Matrix-assisted laser desorption ionization mass spectrometry (MALDI-MS) and electrospray ionization mass spectrometry (ESI-MS) are used to evaluate the alkali metal ion bindingExpand
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Alkaloids and aromatics of Cyathobasis fruticulosa (Bunge) Aellen.
A beta-carboline-, a tryptamine-, and two phenylethylamine-derived alkaloids and three known aromatic compounds were isolated from the aerial parts and roots of Cyathobasis fruticulosa (Bunge)Expand
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Antiproliferative cardenolides from Pentopetia androsaemifolia Decne. from the Madagascar rain forest.
Plant natural products have historically been very important to drug discovery and development, particularly in the anticancer field. This is illustrated by a discussion of the structures andExpand
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Integrating medicinal plants extraction into a high-value biorefinery: An example of Artemisia annua L.
A principle of biorefining is extended to medicinal plants with the view of developing a more sustainable business model for biomass producers and extractors. This is demonstrated for Artemisia annuaExpand
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Syntheses and characterizations of three vinyl copolymers containing pendant calix[4]arenes
Three new copolymers containing pendant calix[4]arene units have been synthesized via radical initiated reactions involving a vinylic calix[4]arene monomer with methylacrylate, acrylonitrile, andExpand
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Syntheses and characterizations of two copolymers containing cone conformations of calix[4]arenes in the polymer backbone
Two new polymers containing calix[4]arenes in the cone conformation were synthesized via condensation reactions.
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