Results 41 to 50 of about 1,797 (189)

Marine Alkaloid 2,2-Bis(6-bromo-3-indolyl) Ethylamine and Its Synthetic Derivatives Inhibit Microbial Biofilms Formation and Disaggregate Developed Biofilms

open access: yesMicroorganisms, 2019
The antimicrobial activity of the marine bisindole alkaloid 2,2-bis(6-bromo-3-indolyl) ethylamine (1) and related synthetic analogues (compounds 2⁻8) against target microorganisms was investigated by Minimum Inhibitory Concentration (MIC ...
Raffaella Campana   +3 more
doaj   +1 more source

Development of Novel Indole and Coumarin Derivatives as Antibacterial Agents That Target Histidine Kinase in S. aureus

open access: yesApplied Microbiology, 2023
Heterocyclic compounds can specifically regulate bacterial development by targeting specific bacterial enzymes and metabolic pathways. The ESKAPE pathogens are multidrug-resistant and cause nosocomial infections, which is one of the greatest challenges ...
Lisha K. Poonacha   +12 more
doaj   +1 more source

Bioactive Bis(indole) Alkaloids from a Spongosorites sp. Sponge

open access: yesMarine Drugs, 2020
Six new bis(indole) alkaloids (1–6) along with eight known ones of the topsentin class were isolated from a Spongosorites sp. sponge of Korea. Based on the results of combined spectroscopic analyses, the structures of spongosoritins A–D (1–4) were ...
Jae Sung Park   +9 more
doaj   +1 more source

Cloning and Overexpression of Strictosidine β-D-Glucosidase Gene Short Sequence from Catharanthus roseus in Escherichia coli [PDF]

open access: yesAdvanced Pharmaceutical Bulletin, 2019
Purpose: Strictosidine-β-D-glucosidase (SGD) is considered as a key enzyme in the production of bisindole alkaloids in Catharanthus roseus. The present study illustrated the production of a short sequence of this enzyme in Escherichia coli without codon ...
Ahmed Saeed Arafa   +4 more
doaj   +1 more source

Marine bisindole alkaloid: A potential apoptotic inducer in human cancer cells

open access: yesEuropean Journal of Histochemistry, 2018
Marine organisms such as corals, sponges and tunicates produce active molecules which could represent a valid starting point for new drug development processes.
Sara Salucci   +8 more
doaj   +1 more source

Dimethyl‐, Diethyl‐, and Propylene Carbonates: An Emerging Class of Green Solvents for Organic Synthesis

open access: yesThe Chemical Record, Volume 26, Issue 8, August 2026.
This review highlights recent advances in the use of organic carbonates, dimethyl carbonate (DMC), diethyl carbonate (DEC), and propylene carbonate (PC), as solvents in organic synthesis. Based on over seventy studies from the past 6 years, it shows their application in different organic reaction types, emphasizing their role in safer and more ...
Gabriela T. Quadros   +5 more
wiley   +1 more source

Oxidative Rearrangements of the Alkaloid Intermediate Geissoschizine

open access: yesAngewandte Chemie, Volume 137, Issue 24, June 10, 2025.
19E‐geissoschizine is a key precursor in the biosynthesis of monoterpene indole alkaloids such as strychnine, ibogaine, and vinblastine. Using enzymatic assays and gene silencing, three CYPs were identified from C. roseus that oxidize this compound to four alkaloid scaffolds: strychnos, sarpagan, akuammiline, and mavacurane. Mutational analysis reveals
Mohamed O. Kamileen   +6 more
wiley   +2 more sources

Exploration of Indole Alkaloids from Marine Fungus Pseudallescheria boydii F44-1 Using an Amino Acid-Directed Strategy

open access: yesMarine Drugs, 2019
The composition of the culture medium has great influence on the metabolite production of the marine fungus Pseudallescheria boydii F44-1. By adding amino acids to GPY culture medium, two new bisindole alkaloids, pseudboindoles A and B (1 and 2 ...
Mei-Xiang Yuan   +7 more
doaj   +1 more source

Emerging Roles of Adenosine Metabolism in Astrocytes During Brain Injury

open access: yesCNS Neuroscience &Therapeutics, Volume 32, Issue 5, May 2026.
Adenosine, as a key metabolic and neurotransmitter in the brain, has become an important therapeutic target for improving the efficacy of immunotherapy for stroke. However, gaps in knowledge about its metabolic pathways have become a key factor limiting its clinical translation.
Shu Zhu   +4 more
wiley   +1 more source

Eight Indole Alkaloids from the Roots of Maerua siamensis and Their Nitric Oxide Inhibitory Effects

open access: yesMolecules, 2022
Maerua siamensis (Capparaceae) roots are used for treating pain and inflammation in traditional Thai medicine. Eight new indole alkaloids, named maeruanitriles A and B, maeroximes A–C, and maeruabisindoles A–C, were isolated from them.
Sasiwimon Nukulkit   +7 more
doaj   +1 more source

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