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- W2043453975 abstract "THE optical isomers of α-keto-(β-methylvaleric acid have been prepared by enzymatic oxidation of the corresponding D-amino-acids1. The keto-acid isomers (and their 2,4-dinitrophenylhydrazones) prepared by enzymatic oxidation of D-isoleucine and D-alloisoleucine exhibited optical rotations which were equal in magnitude and opposite in direction1,2. Furthermore, from microbiological studies (to be reported in detail elsewhere), a purity of at least 98 per cent may be assigned to the lævorotatory isomer of α-keto-β-methylvaleric acid prepared by enzymatic oxidation of D-isoleucine. These findings indicate that the configuration about the β-carbon atom is not measurably altered by enzymatic oxidation of the D-amino-acids or during isolation of the keto-acid." @default.
- W2043453975 created "2016-06-24" @default.
- W2043453975 creator A5000178422 @default.
- W2043453975 date "1951-12-01" @default.
- W2043453975 modified "2023-10-10" @default.
- W2043453975 title "Enzymatic Conversion of the Stereoisomers of isoLeucine to the Corresponding α-Keto-Acids" @default.
- W2043453975 cites W1493050134 @default.
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- W2043453975 doi "https://doi.org/10.1038/1681119a0" @default.
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