Capsidiol and 1-epicapsidiol: absolute configuration, nmr, and optical spectra of the dibenzoates

1981 ◽  
Vol 59 (15) ◽  
pp. 2303-2305 ◽  
Author(s):  
M. J. Stillman ◽  
J. B. Stothers ◽  
A. Stoess
Keyword(s):  
Circular Dichroism ◽  
Absolute Configuration ◽  
Magnetic Circular Dichroism ◽  
Optical Spectra ◽  
Circular Dichroism Spectra ◽  
The Absolute ◽  
Circular Dichroïsm ◽  
Magnetic Circular Dichroism Spectra ◽  
Absolute Stereochemistry

Application of the exciton chirality method has confirmed that capsidiol, a unique eremophilane, has the absolute stereochemistry depicted in 1. The 1H and 13Cmr, circular dichroism, and magnetic circular dichroism spectra of capsidiol and 1-epicapsidiol dibenzoates are discussed.

scholarly journals Natural and magnetic circular dichroism spectra of nucleosides: effect of the dynamics and environment

RSC Advances ◽  
2021 ◽  
Vol 11 (14) ◽  
pp. 8411-8419
Author(s):  
Jakub Kaminský ◽  
Valery Andrushchenko ◽  
Petr Bouř
Keyword(s):  
Molecular Dynamics ◽  
Circular Dichroism ◽  
Nucleic Acids ◽  
Electronic Absorption ◽  
Magnetic Circular Dichroism ◽  
Circular Dichroism Spectra ◽  
Circular Dichroïsm ◽  
Magnetic Circular Dichroism Spectra

Electronic absorption, natural and magnetic circular dichroism spectra of several nucleosides are simulated to understand their dependence on molecular dynamics and environment, their sensitivity to nucleoside pairing and stacking in nucleic acids.

Magnetic circular dichroism studies. 59. Substituent-induced sign variation in the magnetic circular dichroism spectra of chlorins

1981 ◽  
Vol 103 (11) ◽  
pp. 3201-3203 ◽  
Author(s):  
Joseph D. Keegan ◽  
Alan M. Stolzenberg ◽  
Yu-Cheng Lu ◽  
Robert E. Linder ◽  
Guenter Barth ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Magnetic Circular Dichroism ◽  
Circular Dichroism Spectra ◽  
Circular Dichroïsm ◽  
Magnetic Circular Dichroism Spectra

Absolute configuration determination of theanti-head-to-head photocyclodimer of anthracene-2-carboxylic acid through cocrystallization withL-prolinol

2013 ◽  
Vol 69 (11) ◽  
pp. 1411-1413 ◽  
Author(s):  
Yuko Kawanami ◽  
Hidekazu Tanaka ◽  
Jun-ichi Mizoguchi ◽  
Nobuko Kanehisa ◽  
Gaku Fukuhara ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Circular Dichroism ◽  
Carboxylic Acid ◽  
Absolute Configuration ◽  
Void Space ◽  
Circular Dichroism Spectra ◽  
The Absolute ◽  
Circular Dichroïsm ◽  
Hydrogen Bonded

The absolute configuration has been established of the enantiopureanti-head-to-head cyclodimer of anthracene-2-carboxylic acid (AC) cocrystallized with L-propinol and dichloromethane [systematic name: (S)-2-(hydroxymethyl)pyrrolidin-1-ium (5R,6S,11R,12S)-8-carboxy-5,6,11,12-tetrahydro-5,12:6,11-bis([1,2]benzeno)dibenzo[a,e][8]annulene-2-carboxylate dichloromethane monosolvate], C5H12NO+·C30H19O4−·CH2Cl2. In the crystal structure, the AC dimer interacts with L-prolinol through a nine-membered hydrogen-bonded ring [R22(9)], while the dichloromethane molecule is incorporated to fill the void space. The absolute configuration determined in this study verifies a recent assignment made by comparing theoreticalversusexperimental circular dichroism spectra.

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