The 1,2,3-triazole ring has recently attracted a renewed interest as a structural scaffold with many applications in different fields. However, very often, the unambiguous assignment of the correct structure is not an easy task, and the development of robust characterization methodologies is needed. Herein, the three possible isomeric forms of disubstituted 1,2,3-triazole (1,4- or 1,5- or 2,4-disubstituted derivatives) have been characterized and distinguished by routine (1)H/(15)N gHMBC experiments at (15)N natural abundance. The calculated (GIAO-B3LYP/6-311++G**) (15)N NMR chemical shifts showed good agreement with the experimental values, further supporting their unambiguous structural characterization.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1039/c3ob41587b | DOI Listing |
Biomol NMR Assign
December 2024
NMR Laboratory, Medical Physics Department, Institute of Physics, Kazan Federal University, Kremlevskaya Str., 18, Kazan, 420008, Russia.
Angew Chem Int Ed Engl
December 2024
University of California, Riverside, Chemistry, 501 Big Springs Rd, 92521, Riverside, UNITED STATES OF AMERICA.
Sulfated zirconium oxide (SZO) catalyzes the hydrogenolysis of isotactic polypropylene (iPP, Mn = 13.3 kDa, Đ = 2.4,
Nat Catal
October 2024
Department of Molecular Biology and Biochemistry, University of California, Irvine, CA 92697-3900.
Heterologous expression of nitrogenase has been actively pursued because of the far-reaching impact of this enzyme on agriculture, energy and environment. Yet, isolation of an active two-component, metallocentre-containing nitrogenase from a non-diazotrophic host has yet to be accomplished. Here, we report the heterologous synthesis of an active Mo-nitrogenase by combining genes from and in .
View Article and Find Full Text PDFDiagn Interv Imaging
December 2024
Univ. Bordeaux, CNRS, CRMSB, UMR 5536, IHU Liryc, 33000 Bordeaux, France.
Purpose: The primary purpose of this study was to evaluate the accuracy of an MR-thermometry sequence for monitoring prostate temperature. The secondary purposes were to analyze clinical and technical factors that may affect accuracy and testing the method in a realistic setting, with MR-guided Laser ablation on an ex vivo muscle sample.
Materials And Methods: An ex vivo muscle sample was subjected to Laser ablation while using a two-dimensional multislice segmented echo planar imaging sequence for MR thermometry.
Biomol NMR Assign
December 2024
Institute for Organic Chemistry and Chemical Biology, Center for Biomolecular Magnetic Resonance (BMRZ), Johann Wolfgang Goethe University, Max-von-Laue-Str. 7, 60438, Frankfurt/Main, Germany.
Ephrin receptors regulate intercellular communication and are thus involved in tumor development. Ephrin receptor A2 (EphA2), in particular, is overexpressed in a variety of cancers and is a proven target for anti-cancer drugs. The N-terminal ligand-binding domain of ephrin receptors is responsible for the recognition of their ligands, ephrins, and is directly involved in receptor activation.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!