Kinetic aspects involved in the simultaneous enzymatic synthesis of (S)-3-fluoroalanine and (R)-3-fluorolactic acid
作者:Luciana P.B. Gonçalves、O.A.C. Antunes、Gerson F. Pinto、Enrique G. Oestreicher
DOI:10.1016/j.jfluchem.2003.08.009
日期:2003.12
enzymatic system for the simultaneous synthesis of (S)-3-fluoroalanine (1a) and (R)-3-fluorolactic acid (3) with l-ALADH and l-lactate dehydrogenaseusing rac-1 and NAD+. Analysis of isolated products revealed 1a in 60% yield and 86% ee and 3 in 80% yield and over 99% ee. Compounds 1a and 3 represent chiral building blocks for the synthesis of several products with pharmacological activity. The presence
Kinetic Resolution of 3-Fluoroalanine Using a Fusion Protein of<scp>D</scp>-Amino Acid Oxidase with<i>Vitroscilla</i>Hemoglobin
作者:Young-Man SEO、Yong-Ho KHANG、Hyungdon YUN
DOI:10.1271/bbb.110122
日期:2011.4.23
In this study, a fusion protein (VHb-DAAO) of d-amino acid oxidase (DAAO) with Vitreoscilla hemoglobin (VHb) was functionally expressed in Escherichia coli and purified. The k cat value VHb-DAAO (47.1 s−1) towards rac-3-flouroalanine was about 2-fold higher than that of DAAO (21.9 s−1). rac-3-Flouroalanine (500 mm) was kinetically resolved into (R)-3-fluoroalanine with high enatiomeric excess (>99%) by VHb-DAAO with about 52% conversion.
Fluorine-containing amino acids and their derivatives. 6. An efficient synthesis of β-fluorinated alanines via fluorohalomethylation of aminomalonates
作者:Tadahiko Tsushima、Kenji Kawada
DOI:10.1016/s0040-4039(00)94849-4
日期:1985.1
in good yields. These products were successfully converted to various versatile β-fluorinated alanine derivatives, i.e., β,β-difluoroalanine (), N-acyl-β-fluorodehydroalaninate (), and fluoropyruvic acid ().
Process for preparing 3-fluoro-D-alanine and its deutero analogs
申请人:Merck & Co., Inc.
公开号:US03976689A1
公开(公告)日:1976-08-24
3-Fluoro-D-alanine and its deutero analogs, which are potent antibacterial agents, are prepared from fluoropyruvic acid by asymmetric synthesis using an optically active amine such as D-.alpha.-methyl-benzylamine.