Results 1 to 10 of about 16,908 (263)

Palladium-catalyzed regioselective C1-selective nitration of carbazoles [PDF]

open access: yesBeilstein Journal of Organic Chemistry
Carbazoles are ubiquitous and privileged heterocyclic scaffolds in various functional organic materials and naturally occurring products. Although extensive efforts have focused on developing synthetic strategies toward carbazole derivatives, direct ...
Vikash Kumar   +5 more
doaj   +2 more sources

Can Fascaplysins Be Considered Analogs of Indolo[2,3-a]pyrrolo[3,4-c]carbazoles? Comparison of Biosynthesis, Biological Activity and Therapeutic Potential [PDF]

open access: yesMarine Drugs
For the first time, a comparative analysis has been conducted to elucidate the biosynthesis of three families of natural products—staurosporines/rebeccamycins, cladoniamides, and fascaplysins.
Maxim E. Zhidkov   +4 more
doaj   +2 more sources

Enantiotopic-group-selective coupling for unified access to carbazole atropisomers as versatile chiral chromophores [PDF]

open access: yesNature Communications
Chiral organic chromophores are foundational for advanced optical and electronic devices. Despite the widespread use of N-aryl carbazoles in visible-luminescent materials, chiroptical applications of their atropisomers have remained underdeveloped due to
Junqiang Wei   +3 more
doaj   +2 more sources

Synthesis of N-acyl carbazoles, phenoxazines and acridines from cyclic diaryliodonium salts [PDF]

open access: yesBeilstein Journal of Organic Chemistry
N-Acyl carbazoles can be efficiently produced through a single-step process using amides and cyclic diaryliodonium triflates. This convenient reaction is facilitated by copper iodide in p-xylene, using the commonly found activating ligand diglyme.
Nils Clamor   +4 more
doaj   +2 more sources

Anti-Breast Cancer Properties and In Vivo Safety Profile of a Bis-Carbazole Derivative [PDF]

open access: yesPharmaceutics
Background: Carbazoles represent one of the most important classes of nitrogen-based tricyclic aromatic heterocycles and are present in natural sources and chemically obtained drugs.
Jessica Ceramella   +10 more
doaj   +2 more sources

Intramolecular Oxidative Diaryl Coupling of Tetrasubstituted Diphenylamines for the Preparation of Bis(trifluoromethyl) Dimethyl Carbazoles

open access: yesSynOpen, 2021
Synthetic preparation of carbazoles can be challenging, requiring ring-building strategies and/or precious metal catalysts. Presented herein is a method for the preparation of carbazoles with the use of inexpensive and reliable hypervalent iodine ...
Addison M. Duda   +3 more
doaj   +1 more source

Novel Small-Molecule Hybrid-Antibacterial Agents against S. aureus and MRSA Strains

open access: yesMolecules, 2021
Ongoing resistance developments against antibiotics that also affect last-resort antibiotics require novel antibacterial compounds. Strategies to discover such novel structures have been dimerization or hybridization of known antibacterial agents.
Robin Gehrmann   +5 more
doaj   +1 more source

Efficient synthesis of polyfunctionalized carbazoles and pyrrolo[3,4-c]carbazoles via domino Diels–Alder reaction

open access: yesBeilstein Journal of Organic Chemistry, 2021
The p-TsOH-catalyzed Diels–Alder reaction of 3-(indol-3-yl)maleimides with chalcone in toluene at 60 °C afforded two diastereoisomers of tetrahydropyrrolo[3,4-c]carbazoles, which can be dehydrogenated by DDQ oxidation in acetonitrile at room temperature ...
Ren-Jie Fang   +4 more
doaj   +1 more source

A Nitrocarbazole as a New Microtubule-Targeting Agent in Breast Cancer Treatment

open access: yesApplied Sciences, 2021
Breast cancer is still considered a high-incidence disease, and numerous are the research efforts for the development of new useful and effective therapies.
Maria Stefania Sinicropi   +11 more
doaj   +1 more source

Effect of Substituents of Cerium Pyrazolates and Pyrrolates on Carbon Dioxide Activation

open access: yesMolecules, 2021
Homoleptic ceric pyrazolates (pz) Ce(RR’pz)4 (R = R’ = tBu; R = R’ = Ph; R = tBu, R’ = Me) were synthesized by the protonolysis reaction of Ce[N(SiHMe2)2]4 with the corresponding pyrazole derivative.
Uwe Bayer   +4 more
doaj   +1 more source

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