Results 1 to 10 of about 85,504 (285)

Marine Pyrrole Alkaloids [PDF]

open access: yesMarine Drugs, 2021
Nitrogen heterocycles are essential parts of the chemical machinery of life and often reveal intriguing structures. They are not only widespread in terrestrial habitats but can also frequently be found as natural products in the marine environment.
Kevin Seipp, Leander Geske, Till Opatz
doaj   +3 more sources

Synthesis of novel pyrroles and fused pyrroles as antifungal and antibacterial agents

open access: yesJournal of Enzyme Inhibition and Medicinal Chemistry, 2021
Pyrroles and its fused forms possess antimicrobial activities, they can easily interact with biomolecules of living systems. A series of substituted pyrroles, and its fused pyrimidines and triazines forms have been synthesised, all newly synthesised ...
Rania Helmy Abd El-Hameed   +5 more
doaj   +2 more sources

Analysis of the flavonoid component of bioactive New Zealand mānuka (Leptospermum scoparium) honey and the isolation, characterisation and synthesis of an unusual pyrrole [PDF]

open access: green, 2013
The flavonoid components of New Zealand mānuka (Leptospermum scoparium) honey have been quantified in a series of 31 honeys of varying non-peroxide antibacterial activity to clarify discrepancies between previous studies reported in the literature. Total
Alber, Dagmar G.   +5 more
core   +4 more sources

Substituted Pyrroles [PDF]

open access: yesMolecules, 2000
A stepwise synthesis of a-unsubstituted pyrroles with desired substituents in the b-positions of the ring has been devised.
O. A. Golubchicov   +2 more
doaj   +2 more sources

Recent advances in the syntheses of pyrroles

open access: yesGreen Synthesis and Catalysis, 2023
The pyrrole moiety is an important structural motif in functional materials, natural products, and pharmaceuticals. More and more synthetic strategies toward pyrroles have emerged, where various efficient building blocks are developed and these synthons ...
Tao Shi   +7 more
doaj   +1 more source

Carbon Atom Insertion into Pyrroles and Indoles Promoted by Chlorodiazirines

open access: yesJournal of the American Chemical Society, 2021
Herein, we report a reaction that selectively generates 3-arylpyridine and quinoline motifs by inserting aryl carbynyl cation equivalents into pyrrole and indole cores, respectively.
Balu D. Dherange   +4 more
semanticscholar   +1 more source

Fused Pyrroles in Cholestane and Norcholestane Side Chains: Acaricidal and Plant Growth-Promoting Effects

open access: yesMolecules, 2022
Herein, we describe the synthesis and characterization of fused pyrroles in cholestane and norcholestane side chains derived from kryptogenin and diosgenin, respectively.
María G. De los Santos   +7 more
doaj   +1 more source

A green protocol for the synthesis of N-aryl pyrroles: A modified Clauson-Kaas approach using zinc catalyst

open access: yesResults in Chemistry, 2022
The first zinc-catalyzed simple and convenient protocol for the synthesis of N-substituted pyrroles through a modified Clauson-Kaas reaction without co-catalyst, ligand, base and solvent has been described.
C.M.A. Afsina, K.R. Rohit, G. Anilkumar
doaj   +1 more source

An Easy Synthesis of Monofluorinated Derivatives of Pyrroles from β-Fluoro-β-Nitrostyrenes

open access: yesMolecules, 2021
The catalyst-free conjugate addition of pyrroles to β-Fluoro-β-nitrostyrenes was investigated. The reaction was found to proceed under solvent-free conditions to form 2-(2-Fluoro-2-nitro-1-arylethyl)-1H-pyrroles.
Alexander S. Aldoshin   +3 more
doaj   +1 more source

Synthesis of N-perfluoroalkyl-3,4-disubstituted pyrroles by rhodium-catalyzed transannulation of N-fluoroalkyl-1,2,3-triazoles with terminal alkynes

open access: yesBeilstein Journal of Organic Chemistry, 2021
The rhodium-catalyzed transannulation of N-perfluoroalkyl-1,2,3-triazoles with aromatic and aliphatic terminal alkynes under microwave heating conditions afforded N-perfluoroalkyl-3,4-disubstituted pyrroles (major products) and N-fluoroalkyl-2,4 ...
Olga Bakhanovich   +3 more
doaj   +1 more source

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