A CD Exciton Chirality Method for Determination of the Absolute Configuration of <i>t</i><i>hreo-</i>β-Aryl-β-hydroxy-α-amino Acid Derivatives
作者:Lee-Chiang Lo、Chun-Tzu Yang、Charng-Sheng Tsai
DOI:10.1021/jo016070l
日期:2002.2.1
The absoluteconfiguration of threo-beta-aryl-beta-hydroxy-alpha-amino acids was studied by CD exciton chirality method using 7-diethylaminocoumarin-3-carboxylate as a red-shifted chromophore. Bischromophoric derivatives for a series of threo-beta-aryl-beta-hydroxy-alpha-amino acids (3a-h) were prepared and their CDspectra measured in CH2Cl2. By combining the data of CD and NMR coupling constants