Process for the biotechnological preparation of l-thienylalanines in enantiomerically pure form from 2-hydroxy-3-thienylacrylic acids, and their use
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United States of America Patent
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Jan 2, 1996
Grant Date -
N/A
app pub date -
Jul 29, 1993
filing date -
Jul 31, 1992
priority date (Note) -
Expired
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Abstract
L-Thienylalanines are prepared via the hydantoin or the azlactone route. The starting substances used for the biotransformation are 2-hydroxy-3-thienylacrylic acids. The innovative step consists in the transamination of the enol form of the 2-hydroxy-3-thienylacrylic acids to give L-thienylalanines with the aid of biotransformation. The transaminiation is carried out in the presence of L-aspartic acid or L-glutamic acid as amino donor.
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