Results 31 to 40 of about 63,566 (303)

Effect of Antiepileptic Drugs on the Urinary Excretion of Porphyrins in Non-porphyric Subjects

open access: yesJournal of Pharmacological Sciences, 2005
The action of some anticonvulsant drugs as the causal agents of attacks of acute porphyria has been widely documented in the literature. However, little attention has been paid to the effect of these drugs on the urinary excretion of porphyrins in non ...
Maria J. Tutor-Crespo   +2 more
doaj   +1 more source

A Modified Vilsmeier–Haack Strategy to Construct β-Pyridine-Fused 5,10,15,20-Tetraarylporphyrins

open access: yesSynOpen, 2020
A modified Vilsmeier–Haack strategy has been developed to construct a novel series of π-extended nickel(II) or copper(II) complexes of 2-chloro-3-formyl- and 3-formylpyrido[2,3-b]porphyrins from 2-acetamido-meso-tetraarylporphyrins. After chromatographic
Pargat Singh, Mahendra Nath
doaj   +1 more source

Doubly N-confused and ring-contracted [24]hexaphyrin Pd-complexes as stable antiaromatic N-confused expanded porphyrins

open access: yesNature Communications, 2023
As isomers of the regular porphyrins, N-confused porphyrins have attracted extensive attention of chemists because of their unique chemical structures, chemical reactivities, and physical properties, which result in their promising applications in the ...
Fuying Luo   +7 more
doaj   +1 more source

Spectroscopic Investigations of Porphyrin-TiO2 Nanoparticles Complexes

open access: yesMolecules, 2022
This study presents the spectral characterization of TiO2 nanoparticles (NPs) functionalized with three porphyrin derivatives: 5,10,15,20-(Tetra-4-aminophenyl) porphyrin (TAPP), 5,10,15,20-(Tetra-4-methoxyphenyl) porphyrin (TMPP), and 5,10,15,20-(Tetra-4-
Andra Dinache   +6 more
doaj   +1 more source

Two-Dimensional Molecular Patterning by Surface-Enhanced Zn-Porphyrin Coordination [PDF]

open access: yes, 2009
In this contribution, we show how zinc-5,10,15,20-meso-tetradodecylporphyrins (Zn-TDPs) self-assemble into stable organized arrays on the surface of graphite, thus positioning their metal center at regular distances from each other, creating a molecular ...
Elemans J. A. A. W.   +20 more
core   +3 more sources

Synthesis and Photostability of Cyclooctatetraene-Substituted Free Base Porphyrins

open access: yesChemistry, 2021
A series of free base meso-tetraarylporphyrins functionalized with substituents containing one, two, and four cyclooctatetraene (COT) moieties have been obtained and characterized by spectral and photophysical studies. Three COT-free porphyrins served as
Joanna Buczyńska   +6 more
doaj   +1 more source

Urinary porphyrin excretion in hepatitis C infection [PDF]

open access: yes, 1999
A high prevalence of hepatitis C virus infection in porphyria cutanea tarda in some populations suggests a close link between viral hepatitis and alteration of porphyrin metabolism.
Jacob, Karl   +2 more
core   +1 more source

Photomodulation Approaches to Overcome Antimicrobial Resistance

open access: yesPharmaceuticals, 2023
Photopharmacology is an approach that aims to be an alternative to classical chemotherapy. Herein, the different classes of photoswitches and photocleavage compounds and their biological applications are described. Proteolysis targeting chimeras (PROTACs)
Sofia N. Sarabando   +4 more
doaj   +1 more source

Huisgen-based conjugation of water-soluble porphyrins to deprotected sugars: Towards mild strategies for the labelling of glycans [PDF]

open access: yes, 2014
Fully deprotected alkynyl-functionalised mono- and oligosaccharides undergo CuAAC-based conjugation with water-soluble porphyrin azides in aqueous environments.
Boyle, Ross W.   +4 more
core   +1 more source

Porphyrins as Catalysts in Scalable Organic Reactions

open access: yesMolecules, 2016
Catalysis is a topic of continuous interest since it was discovered in chemistry centuries ago. Aiming at the advance of reactions for efficient processes, a number of approaches have been developed over the last 180 years, and more recently, porphyrins ...
Juan C. Barona-Castaño   +3 more
doaj   +1 more source

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