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- W2051207804 abstract "A procedure for the synthesis of (R)- and (S)-enantiomers of α-carbon deuterium-labelled α-amino acids, exemplified for (R)- and (S)-[2-2H1]-Leu is described. Starting from the respective (S)- or (R)-enantiomer or from the racemic mixture of an α-amino acid the selective proton exchange at the α-carbon is carried out by racemization via a Schiff base in monodeuterated acetic acid as solvent which serves as deuterium source. After N-protection the racemic mixture is liquid chromatographically separated into the individual (R)- and (S)-enantiomers on preparative scale employing a chiral anion exchanger based on carbamoylated quinine as chiral selector. After deprotection the enantiomerically pure products can be obtained in good yields. Copyright © 2000 John Wiley & Sons, Ltd." @default.
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- W2051207804 date "2000-04-01" @default.
- W2051207804 modified "2023-09-23" @default.
- W2051207804 title "Simple and efficient preparation of (R)- and (S)-enantiomers of ?-carbon deuterium-labelled ?-amino acids" @default.
- W2051207804 doi "https://doi.org/10.1002/(sici)1099-1344(200004)43:5<449::aid-jlcr331>3.0.co;2-0" @default.
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