The NMR characterization of locked conformations of two stereoisomers of calix[4]tetrahydrofuran.

Magn Reson Chem

Department of Chemistry, University of Neuchâtel, Avenue Bellevaux 51, CH-2000, Neuchâtel, Switzerland.

Published: December 2016

Download full-text PDF

Source
http://dx.doi.org/10.1002/mrc.4481DOI Listing

Publication Analysis

Top Keywords

nmr characterization
4
characterization locked
4
locked conformations
4
conformations stereoisomers
4
stereoisomers calix[4]tetrahydrofuran
4
nmr
1
locked
1
conformations
1
stereoisomers
1
calix[4]tetrahydrofuran
1

Similar Publications

This study aimed to produce a novel resistant maltodextrin (RMD) from the remaining starch in cassava pulp via pyrodextrinization and enzymatic hydrolysis. The optimum conditions involved a temperature of 180 °C, 0.5 % HCl, and a reaction time of 5 h, resulting in a significant RMD yield (18.

View Article and Find Full Text PDF

Identification and structural characterization of glucosylceramides in Holothuria (Halodeima) grisea: Insights from TLC and NMR techniques.

Carbohydr Res

January 2025

Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, 81531-990, Curitiba, PR, Brazil. Electronic address:

Sea cucumbers are widely used in oriental cuisine due to their medicinal properties. Antioxidant, antifungal, antiviral, anticancer and neuroprotective activities have already been identified in several species and in different tissues. Among the class of compounds with biological activity are cerebrosides, which have important functions for the proper functioning of cells, especially neuronal cells.

View Article and Find Full Text PDF

Exploring redox-active electrolytes to boost energy density of carbon-based supercapacitors.

J Colloid Interface Sci

January 2025

School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, 928 Second Street, Hangzhou 310018 China; Zhejiang Sci-Tech University Shengzhou Innovation Research Institute, Shengzhou 312400, China. Electronic address:

To boost supercapacitor (SC) energy density, we introduced redox-active molecules into an aqueous HSO electrolyte. Using retrosynthetic analysis, we identified aminoquinones, specifically triaminochlorobenzoquinone (TACBQ), as promising candidates. Characterization via elemental analysis, Fourier Transform Infrared Spectrometer (FT-IR), nuclear magnetic resonance (NMR), and X-ray photoelectron spectroscopy (XPS) confirmed structure of TACBQ.

View Article and Find Full Text PDF

Anxiety and depression disorders show high prevalence rates, and stress is a significant risk factor for both. However, studies investigating the interplay between anxiety, depression, and stress regulation in the brain are scarce. The present manuscript included 124 law students from the LawSTRESS project.

View Article and Find Full Text PDF

Paddlewheel-type and half-paddlewheel-type diruthenium(II,II) complexes with 1,8-naphthyridine-2-carboxylate.

Dalton Trans

January 2025

Department of Chemistry, Graduate School of Natural Science and Technology, Shimane University, 1060, Nishikawatsu, Matsue, Shimane, 690-8504, Japan.

Paddlewheel-type diruthenium(II,II) complexes are paramagnetic with two unpaired electrons ( = 1) and can be utilized as versatile building blocks for higher-order structures, such as supramolecular complexes, coordination polymers, and metal-organic frameworks, although they are generally highly air-sensitive. In this study, we developed an air-stable paddlewheel-type diruthenium(II,II) complex with two electron-withdrawing 1,8-naphthyridine-2-carboxylate (npc) ligands, [Ru(μ-npc)(OCMe)] (1). The two acetate ligands in 1 can be replaced by other carboxylate ligands; the solvothermal reactions of 1 with benzoic acid (HOCPh) yields the heteroleptic [Ru(μ-npc)(OCPh)] (2), whereas its reaction with 1,8-naphthyridine-2-carboxylic acid (Hnpc) produces the homoleptic [Ru(μ-npc)(η-npc)] (3).

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!