A domino approach of hydrolysis/dehydrohalogenation/Heck coupling was used to synthesize styrene sulfonate salts from iodoarenes and chloroethanesulfonyl chloride in good to excellent yields. Methodology was applicable for heterocyclic as well as disubstituted iodoarenes. Some of the key features of this synthetic methodology include the use of phosphine free catalytic system, water as an environmentally friendly solvent, short reaction times, and absence of additives.
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http://dx.doi.org/10.1021/ja111462h | DOI Listing |
Nucleic Acids Res
January 2025
Institut de Mathématiques de Jussieu - Paris Rive Gauche (IMJ-PRG), UMR 7586, CNRS, Université Paris Diderot, 8, Pace Aurélie Nemours, 75013 Paris, France.
Accurate protein synthesis requires ribosomes to integrate signals from distant functional sites and execute complex dynamics. Despite advances in understanding ribosome structure and function, two key questions remain: how information is transmitted between these distant sites, and how ribosomal movements are synchronized? We recently highlighted the existence of ribosomal protein networks, likely evolved to participate in ribosome signaling. Here, we investigate the relationship between ribosomal protein networks and ribosome dynamics.
View Article and Find Full Text PDFEntropy (Basel)
December 2024
Institute of Informatics, University of Amsterdam, 1098 XH Amsterdam, The Netherlands.
Complex networks, from neuronal assemblies to social systems, can exhibit abrupt, system-wide transitions without external forcing. These endogenously generated "noise-induced transitions" emerge from the intricate interplay between network structure and local dynamics, yet their underlying mechanisms remain elusive. Our study unveils two critical roles that nodes play in catalyzing these transitions within dynamical networks governed by the Boltzmann-Gibbs distribution.
View Article and Find Full Text PDFWorld J Gastroenterol
December 2024
Department of Gastroenterology, University of Balamand, Beirut 3187, Beyrouth, Lebanon.
(. ) is widely used in traditional Chinese medicine due to its anti-tumor effects. .
View Article and Find Full Text PDFOrg Biomol Chem
December 2024
Organic Chemistry Department, Science Faculty, Patrice Lumumba Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, 117198 Moscow, Russia.
A domino approach towards β-carboline natural product taraxacine A and its analogues was developed. The main step relies on a silver(I) and base co-catalysed imidate-alkyne cyclization. The reaction tolerates primary and secondary alcohols, and various substitutions in the indole are possible.
View Article and Find Full Text PDFJ Ultrasound
December 2024
Geriatrics Unit, Garibaldi-Nesima Hospital, Catania, Italy.
Early detection of abdominal aortic aneurysm (AAA) is crucial as untreated lesions can be life-threatening. We describe the case of a fortuitous ultrasound (US) detection of AAA by a trainee which allowed two subsequent "domino" diagnoses. A 69 y.
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