Results 11 to 20 of about 13,653 (252)

Monoamine Oxidase Inhibition by Plant-Derived β-Carbolines; Implications for the Psychopharmacology of Tobacco and Ayahuasca [PDF]

open access: yesFrontiers in Pharmacology, 2022
The monoamine oxidases (MAOs) are flavin-containing amine oxidoreductases responsible for metabolism of many biogenic amine molecules in the brain and peripheral tissues.
Ilana Berlowitz   +3 more
doaj   +4 more sources

Bioactive β-Carbolines Harman and Norharman in Sesame Seed Oils in China

open access: yesMolecules, 2022
The β-carbolines in our diet, mainly including harman and norharman, are a group of biologically active, naturally occurring plant-derived alkaloids. Fragrant sesame seed oil is one of the most popular flavor edible oils in China. Considering that sesame
Wei Liu, Zhaoyu Yang, Lili Shi, Yun Li
doaj   +3 more sources

Degradation of β-Carbolines Harman and Norharman in Edible Oils during Heating

open access: yesMolecules, 2021
The β-carbolines, mainly including harman and norharman, are a group of naturally occurring, plant-derived alkaloids, and are also considered as nonpolar heterocyclic aromatic amines.
Wei Liu   +4 more
doaj   +2 more sources

Metal-Catalyzed Cyclotrimerization Reactions of Cyanamides: Synthesis of 2-Aryl-α-carbolines

open access: yesOrganic Letters, 2020
The synthesis of annulated 2-aryl-α-carboline heterocycles is described using transition metal catalysis. A linear strategy is described that uses Rh(I) catalysis to form the α-carboline scaffold by [2+2+2] cyclotrimerization.
Kyle Medas   +5 more
semanticscholar   +2 more sources

A β-carboline natural product induces oxidative stress in Fusarium graminearum and limits the virulence of multiple fungal phytopathogens [PDF]

open access: yesmBio
The emergence of fungicide-resistant pathogens of many agronomically important crop species necessitates the development of novel strategies for controlling diseases caused by fungi.
Bradley Laflamme   +13 more
doaj   +2 more sources

Anti-inflammatory effects of Banisteriopsis caapi and beta-carbolines in neuronal cells: potential implications for neuro-COVID [PDF]

open access: yesFrontiers in Pharmacology
BackgroundNeuroinflammation plays a central role in neurodegenerative diseases such as Alzheimer’s and Parkinson’s, along with depression, anxiety, and infectious diseases including COVID-19.
Laura Seixas Bianco   +12 more
doaj   +2 more sources

Stereodivergent assembly of tetrahydro-γ-carbolines via synergistic catalytic asymmetric cascade reaction

open access: yesNature Communications, 2019
Tetrahydro-γ-carbolines are the basic structural unit in many natural products and pharmaceuticals. Here, the authors report a synergistic Cu/Ir system to assemble chiral tetrahydro-γ-carbolines via a stereodivergent allylation followed by a ...
Shi-Ming Xu   +5 more
doaj   +2 more sources

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   +2 more sources

Photocatalytic Enantioselective Radical Cascade Multicomponent Minisci Reaction of β‐Carbolines Using Diazo Compounds as Radical Precursors [PDF]

open access: yesAdvanced Science
Here, a photocatalytic asymmetric multicomponent cascade Minisci reaction of β‐carbolines with enamides and diazo compounds is reported, enabling an effective enantioselective radical C─H functionalization of β‐carbolines with high yields and ...
Yi‐Jie Gu   +4 more
doaj   +2 more sources

A Structure–Activity Relationship Study of Trypargine and Opacaline β-Carbolines [PDF]

open access: yesMarine Drugs
The marine environment represents a rich source of novel antimicrobial compounds. This study investigated the isolation and synthesis of antimicrobial agents from the New Zealand ascidian Pseudodistoma opacum to identify natural products and derivatives ...
Dan Chen   +4 more
doaj   +2 more sources

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