Results 41 to 50 of about 4,070 (167)

Comprehensive review of β-carbolines from microbes and their biosynthesis

open access: yesEuropean Journal of Medicinal Chemistry Reports
β-carbolines were historically known as plant-derived metabolites. They are known to exhibit a broad spectrum of biological activities with clinical and economic significance.
Mary Ayeko Twumasi   +4 more
doaj   +1 more source

Recreational use, analysis and toxicity of tryptamines [PDF]

open access: yes, 2015
The definition New psychoactive substances (NPS) refers to emerging drugs whose chemical structures are similar to other psychoactive compounds but not identical, representing a "legal" alternative to internationally controlled drugs.
Mannocchi, Giulio   +3 more
core   +1 more source

In vitro Effect of Harmine Alkaloid and Its N-Methyl Derivatives Against Toxoplasma gondii

open access: yesFrontiers in Microbiology, 2021
Toxoplasmosis is one of the most prevalent and neglected zoonotic global diseases caused by Toxoplasma gondii. The current pharmacological treatments show clinical limitations, and therefore, the search for new drugs is an urgent need in order to ...
Maria L. Alomar   +4 more
doaj   +1 more source

Asymmetric synthesis of 2-substituted oxetan-3-ones via metalated SAMP/RAMP hydrazones [PDF]

open access: yes, 2013
2-Substituted oxetan-3-ones can be prepared in good yields and enantioselectivities (up to 84% ee) by the metalation of the SAMP/RAMP hydrazones of oxetan-3-one, followed by reaction with a range of electrophiles that include alkyl, allyl, and benzyl ...
Beasley, Benjamin   +3 more
core   +1 more source

Indole Alkaloids from Psychoactive Mushrooms: Chemical and Pharmacological Potential as Psychotherapeutic Agents

open access: yesBiomedicines, 2023
Neuropsychiatric diseases such as depression, anxiety, and post-traumatic stress represent a substantial long-term challenge for the global health systems because of their rising prevalence, uncertain neuropathology, and lack of effective pharmacological
Erika Plazas, Nicoletta Faraone
doaj   +1 more source

Inhibition of alpha oscillations through serotonin-2A receptor activation underlies the visual effects of ayahuasca in humans [PDF]

open access: yes, 2016
Ayahuasca is an Amazonian psychotropic plant tea typically obtained from two plants, Banisteriopsis caapi and Psychotria viridis. It contains the psychedelic 5-HT2A and sigma-1 agonist N,N-dimethyltryptamine (DMT) plus ß-carboline alkaloids with ...
Alonso, Joan Francesc   +12 more
core   +3 more sources

Cigarette Smoke Extract, but Not Electronic Cigarette Aerosol Extract, Inhibits Monoamine Oxidase in vitro and Produces Greater Acute Aversive/Anhedonic Effects Than Nicotine Alone on Intracranial Self-Stimulation in Rats

open access: yesFrontiers in Neuroscience, 2022
Conventional tobacco cigarettes appear to have greater abuse liability than non-combusted products such as electronic cigarettes (ECs) and nicotine replacement therapy (NRT).
Andrew C. Harris   +8 more
doaj   +1 more source

Discovery of a Plant Pictet–Spenglerase With R‐Stereoselectivity

open access: yesAngewandte Chemie International Edition, EarlyView.
Strictosidine synthases (STRs) are plant Pictet–Spenglerases catalyzing the coupling of a secoiridoid with tryptamine. All previously characterized strictosidine synthases are strictly S‐selective. Here, we report the discovery of Epi‐STR, an R‐selective STR ortholog from the medicinal plant Pogonopus speciosus.
Clara Morweiser   +3 more
wiley   +1 more source

Smoking-induced long-lasting modifications of human platelet serotonin catabolism through a MAO epigenetic regulation [PDF]

open access: yes, 2008
Postulating that serotonin, secreted from smoking-activated platelets, could be involved in smoking-induced vascular modifications, we studied 115 men distributed in smokers (S), former smokers (FS) and never smokers (NS).
Alain Simon   +8 more
core   +1 more source

Why Leave a Job Half Done? Recent Progress in Enzymatic Deracemizations [PDF]

open access: yes, 2015
Financial support of this work by the Spanish MICINN (Projects CTQ2011-24237 and CTQ2013-44153) is gratefully ...
Díaz Rodríguez, Alba   +2 more
core   +2 more sources

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