NMR calculations with quantum methods: development of new tools for structural elucidation and beyond

MO Marcarino, MM Zanardi, S Cicetti… - Accounts of Chemical …, 2020 - ACS Publications
structural elucidation to our efforts to understand their scope and limitations in the in silico
assignment and revisions of structures … (CASE) expert systems coupled with DFT calculations

Enhancing computer‐assisted structure elucidation with DFT analysis of J‐couplings

AV Buevich, ME Elyashberg - Magnetic Resonance in …, 2020 - Wiley Online Library
… As such, we believe that the addition of the DFT calculations of J-couplings to the CASE
expert systems should further improve the robustness of the CASE algorithm and thus help to …

Tailoring, structural elucidation, DFT calculation, DNA interaction and pharmaceutical applications of some aryl hydrazone Mn (II), Cu (II) and Fe (III) complexes

AM Abu-Dief, RM El-khatib, SM El Sayed… - … of Molecular Structure, 2021 - Elsevier
Calculations based on Density Functional Theory (DFT) were used and offered a satisfactory
explanation to better understands the electronic and structural properties of these metal …

Synergistic combination of CASE algorithms and DFT chemical shift predictions: a powerful approach for structure elucidation, verification, and revision

AV Buevich, ME Elyashberg - Journal of natural products, 2016 - ACS Publications
… the DFT calculations could improve the empirical CASE structure elucidation algorithm …
latter approach had difficulties in determining a single structure. To check this hypothesis, three …

Towards unbiased and more versatile NMR‐based structure elucidation: A powerful combination of CASE algorithms and DFT calculations

AV Buevich, ME Elyashberg - Magnetic Resonance in …, 2018 - Wiley Online Library
… However, CASE applications are generally limited to structural isomer problems and can …
and density functional theory calculations that broadens the range of amenable structural

Computer assisted structure elucidation (CASE): current and future perspectives

M Elyashberg, D Argyropoulos - Magnetic Resonance in …, 2021 - Wiley Online Library
… [ 110 ] conclude that these results suggest that DFT calculations of coupling constants
are accurate enough for use in structure elucidation, even for heterocycles and bridged ring …

Synthesis, structural elucidation, DFT calculation, biological studies and DNA interaction of some aryl hydrazone Cr3+, Fe3+, and Cu2+ chelates

AM Abu-Dief, RM El-Khatib, FS Aljohani… - … Biology and Chemistry, 2022 - Elsevier
Density Functional Theory (DFT) computations were used and provided a reasonable
explanation for these metal chelates' electrical and structural features. Furthermore, investigations …

The role of computer-assisted structure elucidation (CASE) programs in the structure elucidation of complex natural products

DC Burns, EP Mazzola, WF Reynolds - Natural product reports, 2019 - pubs.rsc.org
… 3D structures is also described. Other types of computer assistance for structure elucidation
… the increasing use of theoretical DFT calculations to determine 3D structures and to predict …

Vibrational analysis as a powerful tool in structure elucidation of polyarsenicals: a DFT-based investigation of arsenicin A

G Guella, I Mancini, G Mariotto, B Rossi… - Physical Chemistry …, 2009 - pubs.rsc.org
… In our opinion, this discrepancy is not due to a shortcoming of DFT calculations, but rather
to changes occurring in the preparation of arsenicin A samples. Polymorphism phenomena …

Structural Elucidation by NMR Analysis Assisted by DFT Calculations of a Novel Natural Product from Conchocarpus Mastigophorus (Rutaceae)

BNS Pinto, ES Alvarenga, AR Santos… - Asian Journal of …, 2022 - Wiley Online Library
Structural elucidation of a new natural product is the first step towards understanding its …
complete structure elucidation of these natural products, using NMR and DFT calculations