Results 61 to 70 of about 229,471 (214)

Binding Parameters of Alkaloids Berberine and Sanguinarine with DNA [PDF]

open access: yesUkr.J.Phys., 2011, v.56, N2, p.524-533, 2012
We study the interaction of berberine and sanguinarine (plant alkaloids) with DNA in aqueous solutions, by using optical spectroscopy methods (absorption and fluorescence). The dependencies of alkaloid spectral characteristics on the concentration ratio N/c between the DNA base pairs and alkaloid molecules in the solutions are considered, and the ...
arxiv  

Transcriptional Profiles of Secondary Metabolite Biosynthesis Genes and Cytochromes in the Leaves of Four Papaver Species

open access: yesData, 2018
Poppies are well-known plants in the family Papaveraceae that are rich in alkaloids. This family contains 61 species, and in this study we sequenced the transcriptomes of four species’ (Papaver rhoeas, Papaver nudicaule, Papaver fauriei, and ...
Dowan Kim   +7 more
doaj   +1 more source

Molecular geometry of alkaloids present in seeds of mexican prickly poppy [PDF]

open access: yesarXiv, 2015
The work is a study of the geometry of the molecules via molecular mechanics of the main alkaloids found in the seeds of Argemone Mexicana Linn, a prickly poppy, which is considered one of the most important species of plants in traditional Mexican and Indian medicine system.
arxiv  

Evolution through time of Pyrrolizidine Alkaloids detection and quantification [PDF]

open access: yesarXiv, 2013
Pyrrolizidine Alkaloids (PAs) are a group of naturally occurring alkaloids that are produced by plants as a defense mechanism against insect herbivores. The analytical methodologies employed for their detection have come a long way since the first analytical experiment and in the last 30 years had an enormous development, both technological and ...
arxiv  

Preparative Isolation of Seven Diterpenoid Alkaloids from Aconitum coreanum by pH-Zone-Refining Counter-Current Chromatography

open access: yesMolecules, 2014
The aim of this paper was to seek an efficient method to preparative separation of alkaloid compounds from Aconitum coreanum (Guanbaifu), a well-known traditional Chinese medicinal plant for heart disease.
Xueyong Wang   +4 more
doaj   +1 more source

Marine indole alkaloids: potential new drug leads for the control of depression and anxiety.

open access: yesChemical Reviews, 2010
The marine environment has been explored in the search for new bioactive compounds over the last 50 years, becoming a highly important and rich source of potent molecules and drug leads reported to possess a wide scope of activities. Alkaloids constitute
Anna J Kochanowska-Karamyan, M. Hamann
semanticscholar   +1 more source

New extraction technique for alkaloids

open access: yesJournal of the Brazilian Chemical Society, 2006
A method of extraction of natural products has been developed. Compared with existing methods, the new technique is rapid, more efficient and consumes less solvent.
Djilani Abdelouaheb   +4 more
doaj  

Synthetic and Receptor Signaling Explorations of the Mitragyna Alkaloids: Mitragynine as an Atypical Molecular Framework for Opioid Receptor Modulators.

open access: yesJournal of the American Chemical Society, 2016
Mu-opioid receptor agonists represent mainstays of pain management. However, the therapeutic use of these agents is associated with serious side effects, including potentially lethal respiratory depression.
Andrew C. Kruegel   +7 more
semanticscholar   +1 more source

Total Synthesis of Aspidosperma and Strychnos Alkaloids through Indole Dearomatization.

open access: yesChemistry, 2019
Monoterpenoid indole alkaloids are the major class of tryptamine-derived alkaloids found in nature. Together with their structural complexity, this has attracted great interest from synthetic organic chemists.
Jordy M. Saya, Eelco Ruijter, R. Orru
semanticscholar   +1 more source

A Review of Bioinsecticidal Activity of Solanaceae Alkaloids

open access: yesToxins, 2016
Only a small percentage of insect species are pests. However, pest species cause significant losses in agricultural and forest crops, and many are vectors of diseases.
S. Chowański   +10 more
semanticscholar   +1 more source

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