Determination of relative configuration in organic compounds by NMR spectroscopy and computational methods
G Bifulco, P Dambruoso, L Gomez-Paloma… - Chemical …, 2007 - ACS Publications
Stereochemical features have a profound impact on a variety of molecular properties, such
as chemical reactivity and catalytic, biological, and pharmacological activities. In light of the …
as chemical reactivity and catalytic, biological, and pharmacological activities. In light of the …
Structural characterisation of natural products by means of quantum chemical calculations of NMR parameters: New insights
In the early 2000s, the first articles regarding the calculation of NMR parameters for natural
products appeared in the literature. Since then, modelling 1H and 13C chemical shifts and …
products appeared in the literature. Since then, modelling 1H and 13C chemical shifts and …
The quantum-chemical calculation of NMR indirect spin–spin coupling constants
We present here a review of currently available methods for the calculation of indirect
nuclear spin–spin coupling constants, discussing some of the questions and difficulties …
nuclear spin–spin coupling constants, discussing some of the questions and difficulties …
Indirect Nonbonded Nuclear Spin–Spin Coupling: A Guide for the Recognition and Understanding of “Through-Space” NMR J Constants in Small Organic …
JC Hierso - Chemical reviews, 2014 - ACS Publications
Nuclear magnetic resonance (NMR) is widely employed for investigating a range of
important issues from the determination of novel molecular structures in inorganic, organic …
important issues from the determination of novel molecular structures in inorganic, organic …
The effect of lone pairs and electronegativity on the indirect nuclear spin–spin coupling constants in NH, O, S): Ab initio calculations using optimized …
The indirect nuclear spin–spin coupling constants of C 2 H 4, CH 2 NH, CH 2 O, and CH 2 S
were investigated by means of correlated ab initio calculations at the level of the second …
were investigated by means of correlated ab initio calculations at the level of the second …
Absolute configuration determination by quantum mechanical calculation of chiroptical spectra: Basics and applications to fungal metabolites
Background: Quantum mechanical simulations of chiroptical properties, such as electronic
circular dichroism (ECD), optical rotation (OR), and vibrational circular dichroism (VCD) …
circular dichroism (ECD), optical rotation (OR), and vibrational circular dichroism (VCD) …
Spin–spin coupling tensors as determined by experiment and computational chemistry
J Vaara, J Jokisaari, RE Wasylishen… - Progress in Nuclear …, 2002 - Elsevier
Our aim is to examine the recent experimental and theoretical research involving the nuclear
spin–spin coupling tensor, the indirect coupling mediated by the electronic structure, JMN …
spin–spin coupling tensor, the indirect coupling mediated by the electronic structure, JMN …
New Mono‐ and Dimeric Members of the Secalonic Acid Family: Blennolides A–G Isolated from the Fungus Blennoria sp.
W Zhang, K Krohn, U Flörke, G Pescitelli… - … A European Journal, 2008 - Wiley Online Library
Abstract Blennolides A–G (2–8), seven unusual chromanones, were isolated together with
secalonic acid B (1) from Blennoria sp., an endophytic fungus from Carpobrotus edulis. This …
secalonic acid B (1) from Blennoria sp., an endophytic fungus from Carpobrotus edulis. This …
Recent advances in theoretical calculations of indirect spin–spin coupling constants
LB Krivdin, RH Contreras - Annual Reports on NMR Spectroscopy, 2007 - Elsevier
Recent trends in theoretical calculations of indirect spin–spin coupling constants covering
the period of May 2003–July 2006 are outlined with the emphasis on the currently used …
the period of May 2003–July 2006 are outlined with the emphasis on the currently used …
DFT Calculation of NMR JFF Spin−Spin Coupling Constants in Fluorinated Pyridines
All four isotropic contributions to the NMR fluorine− fluorine coupling constants (Fermi
contact, FC, spin-dipolar, SD, paramagnetic spin− orbit, PSO, and diamagnetic spin− orbit …
contact, FC, spin-dipolar, SD, paramagnetic spin− orbit, PSO, and diamagnetic spin− orbit …