Kinetic Resolution of Aromatic β-Amino Acids Using a Combination of Phenylalanine Ammonia Lyase and Aminomutase Biocatalysts
作者:Nicholas J. Weise、Syed T. Ahmed、Fabio Parmeggiani、Nicholas J. Turner
DOI:10.1002/adsc.201600894
日期:2017.5.2
linked to the first ever proposed biosynthesis of pyloricidin‐like secondary metabolites and was shown to display better β‐lyase activity in many cases. In spite of this, a method combining the higher conversion of EncP with a strict α‐lyase from Anabaena variabilis (AvPAL) was found to be more amenable, allowing kinetic resolution of five racemic substrates and a preparative‐scale reaction with >98% (R)
Phenylalanine Aminomutase-Catalyzed Addition of Ammonia to Substituted Cinnamic Acids: a Route to Enantiopure α- and β-Amino Acids
作者:Wiktor Szymanski、Bian Wu、Barbara Weiner、Stefaan de Wildeman、Ben L. Feringa、Dick B. Janssen
DOI:10.1021/jo901833y
日期:2009.12.4
approach is described for the synthesis of aromatic α- and β-amino acids that uses phenylalanine aminomutase to catalyze a highly enantioselective addition of ammonia to substituted cinnamic acids. The reaction has a broad scope and yields substitutedα- and β-phenylalanines with excellent enantiomeric excess. The regioselectivity of the conversion is determined by substituents present at the aromatic ring
3-Amino-3-arylpropionic acid n-alkyl esters, process for production thereof, and process for production of optically active 3-amino-3-arylpropionic acids and esters of the antipodes thereto
申请人:Yamamoto Yasuhito
公开号:US20060178433A1
公开(公告)日:2006-08-10
The present invention is to provide an n-alkyl 3-amino-3-arylpropionate represented by the formula (I):
wherein Ar
1
represents an aryl group which may have a substituent(s), provided that a phenyl group and 4-methoxyphenyl group are excluded, R
1
represents an n-propyl group or an n-butyl group,
and a process for preparing the same, and its optically active compound and an optically active (S or R)-3-amino-3-arylpropionic acid represented by the formula (III-a):
wherein Ar represents an aryl group which may have a substituent(s), and * represents an asymmetric carbon,
and a process for preparing an optically active n-alkyl (R or S)-3-amino-3-arylpropionate represented by the formula (IV-a):
wherein Ar and R
1
have the same meanings as defined above, * represents an asymmetric carbon, provided that it has a reverse absolute configuration to the compound of the formula (III-a).
3-AMINO-3-ARYLPROPIONIC ACID n-ALKYL ESTERS, PROCESS FOR PRODUCTION THEREOF, AND PROCESS FOR PRODUCTION OF OPTICALLY ACTIVE 3-AMINO-3-ARYLPROPIONIC ACIDS AND ESTERS OF THE ANTIPODES THERETO
申请人:Ube Industries, Ltd.
公开号:EP1621529A1
公开(公告)日:2006-02-01
The present invention is to provide an n-alkyl 3-amino-3-arylpropionate represented by the formula (I):
wherein Ar1 represents an aryl group which may have a substituent(s), provided that a phenyl group and 4-methoxyphenyl group are excluded, R1 represents an n-propyl group or an n-butyl group,
and a process for preparing the same, and its optically active compound and an optically active (S or R)-3-amino-3-arylpropionic acid represented by the formula (III-a):
wherein Ar represents an aryl group which may have a substituent(s), and * represents an asymmetric carbon,
and a process for preparing an optically active n-alkyl (R or S)-3-amino-3-arylpropionate represented by the formula (IV-a):
wherein Ar and R1 have the same meanings as defined above, * represents an asymmetric carbon, provided that it has a reverse absolute configuration to the compound of the formula (III-a).
β-Styryl- and β-Aryl-β-alanine Products of Phenylalanine Aminomutase Catalysis
作者:Karin L. Klettke、Sanjit Sanyal、Washington Mutatu、Kevin D. Walker
DOI:10.1021/ja071328w
日期:2007.6.6
The substrate specificity of a Taxus-derived phenylalanine aminomutase (PAM) was investigated, and the enzyme was found to catalyze the conversion of variously substituted vinyl- and aryl-S-alpha-alanines to corresponding beta-amino acids. This study shows the broad substrate specificity of PAM and thus demonstrates a potential, practical biosynthetic route toward unnatural beta-amino acid subunits of Taxol analogues and beta-peptides.