Relative and absolute configurational assignments of acyclic polyols by circular dichroism. 2. Determination of nondegenerate exciton coupling interactions by assignment of prochiral aryloxymethylene protons for proton NMR conformational analysis

1990 ◽  
Vol 112 (14) ◽  
pp. 5574-5583 ◽  
Author(s):  
William T. Wiesler ◽  
Koji Nakanishi
Keyword(s):  
Circular Dichroism ◽  
Conformational Analysis ◽  
Proton Nmr ◽  
Exciton Coupling ◽  
Circular Dichroïsm

scholarly journals Vibrational Circular Dichroism: Recent Advances for the Assignment of the Absolute Configuration of Natural Products

2015 ◽  
Vol 10 (10) ◽  
pp. 1934578X1501001 ◽  
Author(s):  
Eleuterio Burgueño-Tapia ◽  
Pedro Joseph-Nathan
Keyword(s):  
Natural Products ◽  
Circular Dichroism ◽  
Absolute Configuration ◽  
Aromatic Compounds ◽  
Vibrational Circular Dichroism ◽  
Exciton Coupling ◽  
Coupling Approach ◽  
The Absolute ◽  
Circular Dichroïsm

Vibrational circular dichroism (VCD) emerged during the last decade as a reliable tool for the absolute configuration (AC) determination of organic compounds. The principles, instrumentation, and methodology applied prior to early 2013 were recently reviewed by us. Since VCD is a very dynamic field, the aim of this review is to update VCD advances for the AC assignment of terpenoids, aromatic compounds, alkaloids, and other natural products for the 2013-2014 period, when VCD was applied to the AC assignment of some 70 natural products. In addition, although discovered in 2012, a brief introduction to the VCD exciton coupling approach and its applications in natural products AC assignment is presented.

Vibrational Circular Dichroism (VCD), VCD Exciton Coupling, and X-ray Determination of the Absolute Configuration of an α ,β -Unsaturated Germacranolide

Chirality ◽  
2015 ◽  
Vol 27 (3) ◽  
pp. 247-252 ◽  
Author(s):  
Mariano Sánchez-Castellanos ◽  
María A. Bucio ◽  
Angelina Hernández-Barragán ◽  
Pedro Joseph-Nathan ◽  
Gabriel Cuevas ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Absolute Configuration ◽  
Vibrational Circular Dichroism ◽  
X Ray ◽  
Exciton Coupling ◽  
The Absolute ◽  
Circular Dichroïsm
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