Results 11 to 20 of about 17,074 (296)

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

Regioselective Stepwise Synthesis of Unsymmetrical 1,2,5-Triarylpyrroles via Palladium-Catalyzed Decarboxylative Cross-Coupling and C–H Arylation [PDF]

open access: yesMolecules
Pyrrole derivatives are natural organic molecules that are important to the pharmaceutical industry due to their occurrence in nature and their use in a wide range of medical applications. In general, non-symmetric, 1,2,5-triaryl-substituted pyrroles are
Cindy Buonomano   +6 more
doaj   +2 more sources

Pyrrole and Fused Pyrrole Compounds with Bioactivity against Inflammatory Mediators [PDF]

open access: yesMolecules, 2017
A new series of pyrrolopyridines and pyrrolopyridopyrimidines have been synthesized from aminocyanopyrroles. The synthesized compounds have been characterized by FTIR, 1H-NMR and mass spectroscopy.
Samar Said Fatahala   +4 more
doaj   +3 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

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

Pyrrole-Pyridine and Pyrrole-Naphthyridine Hosts for Anion Recognition [PDF]

open access: yesMolecules, 2015
The association constants of the complexes formed by two hosts containing pyrrole, amide and azine (pyridine and 1,8-naphthyridine) groups and six guests, all monoanions (Cl−, CH3CO2−, NO3−, H2PO4−, BF4−, PF6−), have been determined using NMR titrations.
M. García   +7 more
openaire   +9 more sources

The Intramolecular Photometathesis of Pyrroles. [PDF]

open access: yesChemInform, 2007
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Luke D, Elliott   +3 more
openaire   +2 more sources

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

Diabetes mellitus is associated with elevated urinary pyrrole markers of γ-diketones known to cause axonal neuropathy

open access: yesBMJ Open Diabetes Research & Care, 2020
Introduction Progressive distal symmetrical axonal neuropathy, a complication of diabetes mellitus (DM), has an unknown cause. Normal physiological metabolism and diabetic dysmetabolism are associated with the generation of γ-diketones.
Wenting Feng   +3 more
doaj   +1 more source

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