cas 3685-51-6, L-3-THIENYLALANINE | Articles data ｜lookchem

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3685-51-6

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Process for the biotechnological preparation of L-thienylalanines in enantiomerically pure form from 2-hydroxy-3-thienylacrylic acids and their use
Process for the biotechnological preparation of L-thienylalanines in enantiomerically pure form from 2-hydroxy-3-thienylacrylic acids, and their use. 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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(2008/06/13)

Asymmetric synthesis of L-thienylalanines
L-Thienylalanines were prepared via the hydantoin and azlactone routes with the key step consisting of the microbial transamination of 2-hydroxy-3-thienylacrylic with L-aspartic acid as amino donor.The transamination reaction was performed by a genetically engineered E. coli strain on scales up to 100 g of L-3-(2-thienyl)alanine 1a and is also applicable to the preparation of the isomeric amino acid 1b and some ring-substituted derivatives.
Meiwes, Johannes,Schudok, Manfred,Kretzschmar, Gerhard
p. 527 - 536
(2007/10/03)

Inhibitors of interleukin-1β converting enzyme
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(2008/06/13)

Studies on Cyclic Dipeptides, I: Aryl Modifications of cyclo-[Phe-His]
Seven new cyclic dipeptides have been synthesized and tested for their applicability as tools to elucidate the mechanism of formation of mandelonitrile with (SS)-cyclo-[Phe-His] type catalysts. Conformational analyses based on 1H NMR spectra are presented for all prepared cyclic dipeptides.
Noe,Weigand,Pirker
p. 1081 - 1097
(2007/10/03)

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83825-42-7
(2S)-2-[(tert-butoxycarbonyl)amino]-3-(thiophen-3-yl)propanoic acid

Chemical Properties

Boiling Point: 320.3°Cat760mmHg
Flash Point:147.5°C
Density: 1.349g/cm³
Storage Temp.:Store at RT.
Vapor Pressure: 3E-06mmHg at 25°C
PKA: 2.23±0.10(Predicted)
PSA: 91.56000
LogP: 1.40280

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