Mechanism for chiral recognition of a prochiral center and for amino acid complexation to a cobalt(III) tetramine. Crystal structure, absolute configuration, and circular dichroism of .lambda.(-)436-.beta.-2-[(2S,9S)-2,9-diamino-4,7-diazadecanecobalt(III) aminomethylmalonate] perchlorate monohydrate

1974 ◽  
Vol 96 (18) ◽  
pp. 5741-5751 ◽  
Author(s):  
Jenny P. Glusker ◽  
H. L. Carrell ◽  
Robert Job ◽  
Thomas C. Bruice
Keyword(s):  
Crystal Structure ◽  
Circular Dichroism ◽  
Amino Acid ◽  
Absolute Configuration ◽  
Chiral Recognition ◽  
Beta 2 ◽  
Circular Dichroïsm

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.

scholarly journals Redetermination and absolute configuration of berkeleydione

2015 ◽  
Vol 71 (4) ◽  
pp. o248-o248 ◽  
Author(s):  
Andrea Stierle ◽  
Donald Stierle ◽  
Daniel Decato
Keyword(s):  
Crystal Structure ◽  
Circular Dichroism ◽  
Absolute Configuration ◽  
Title Compound ◽  
Crystal Packing ◽  
The Absolute ◽  
Circular Dichroïsm

The crystal structure of the title compound, berkeleydione [systematic name; (5aS,7R,9S,11R,11aS)-methyl 9-hydroxy-1,1,5,7,9,11a-hexamethyl-14-methylidene-3,8,10-trioxo-1,3,4,5a,6,7,8,9,10,11,11a,12-dodecahydro-7,11-methanocycloocta[4,5]cyclohepta[1,2-c]pyran-11-carboxylate], C26H32O7, has been reported previously [Stierleet al.(2004).Org. Lett.6, 1049–1052]. However, the absolute configuration could not be determined from the data collected with MoKα radiation and has now been determined by refinement of the Flack parameter with data collected using CuKα radiation. It is in agreement with the previous circular dichroism assignment, and the crystal packing is similar to that described previously.

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