Results 21 to 30 of about 20,113 (257)

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

Journal 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, Jesús Hermida, J. Carlos Tutor   +2 more
doaj   +1 more source

Anthracene‐Porphyrin Nanoribbons

Angewandte Chemie International Edition, 2023
Abstract π‐Conjugated nanoribbons attract interest because of their unusual electronic structures and charge‐transport behavior. Here, we report the synthesis of a series of fully edge‐fused porphyrin‐anthracene oligomeric ribbons (dimer and trimer), together with a computational study of the corresponding ...
Zhu, H, Chen, Q, Rončević, I, Christensen, KE, Anderson, HL   +4 more
openaire   +3 more sources

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

SynOpen, 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

Photophysical and Bactericidal Properties of Pyridinium and Imidazolium Porphyrins for Photodynamic Antimicrobial Chemotherapy

Molecules, 2021
Despite advances achieved over the last decade, infections caused by multi-drug-resistant bacterial strains are increasingly becoming important societal issues that need to be addressed.
Florent Le Guern, Tan-Sothéa Ouk, Issabayev Yerzhan, Yesmurzayeva Nurlykyz, Philippe Arnoux, Céline Frochot, Stéphanie Leroy-Lhez, Vincent Sol   +7 more
doaj   +1 more source

Synthesis and Photostability of Cyclooctatetraene-Substituted Free Base Porphyrins

Chemistry, 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, Agnieszka Gajewska, Aleksander Gorski, Barbara Golec, Krzysztof Nawara, Renata Rybakiewicz, Jacek Waluk   +6 more
doaj   +1 more source

Spectroscopic Investigations of Porphyrin-TiO₂ Nanoparticles Complexes

Molecules, 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, Simona Nistorescu, Tatiana Tozar, Adriana Smarandache, Mihai Boni, Petronela Prepelita, Angela Staicu   +6 more
doaj   +1 more source

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

Nature 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, Le Liu, Han Wu, Ling Xu, Yutao Rao, Mingbo Zhou, Atsuhiro Osuka, Jianxin Song   +7 more
doaj   +1 more source

Photomodulation Approaches to Overcome Antimicrobial Resistance

Pharmaceuticals, 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, Andreia Palmeira, Maria Emília Sousa, Maria Amparo F. Faustino, Carlos J. P. Monteiro   +4 more
doaj   +1 more source

UiO‐66 metal–organic frameworks in biomedicine: From structural tunability to bioimaging, photodiagnostics, and photodynamic cancer therapy

FEBS Open Bio, EarlyView.
UiO‐66(Zr) metal–organic frameworks are chemically stable, biocompatible, and highly tunable nanomaterials. Their modular structure enables controlled drug delivery, multimodal bioimaging, and light‐activated photodynamic therapy, supporting integrated diagnostic and therapeutic (theranostic) applications in cancer and biomedical research.
Veronika Huntošová, Grigorii Rakhalskii, Miroslav Almáši   +2 more
wiley   +1 more source

The biosynthesis of porphyrins

Ergebnisse der Physiologie Biologischen Chemie und Experimentellen Pharmakologie, 1948
This article is intended as a summary of some of the work which has been done, over the past ten years, on the biosynthesis of porphyrins. The treatment accorded to this subject should not be considered to be that of an exhaustive review article. It will consider only those papers which, in the author’s opinion, are most pertinent to the particular ...
openaire   +3 more sources