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Juma WP, Nyoni D, Brady D, Bode ML. The Application of Biocatalysis in the Preparation and Resolution of Morita-Baylis-Hillman Adducts and Their Derivatives. Chembiochem 2021; 23:e202100527. [PMID: 34822736 DOI: 10.1002/cbic.202100527] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 11/25/2021] [Indexed: 12/16/2022]
Abstract
The Morita-Baylis-Hillman (MBH) reaction affords highly functionalised allylic alcohols containing a new stereogenic centre. These MBH adducts are very versatile and have been transformed into a large range of products, some of which have medicinal potential. Several examples of asymmetric syntheses of MBH adducts have been reported, although a generally applicable method remains to be developed. Biocatalytic approaches for the synthesis and enzymatic kinetic resolution of MBH adducts have been reported, and are discussed in detail in this review. Enzymes able to catalyse the asymmetric MBH reaction have been identified, but selectivity and efficiency have generally been low. Lipases, esterases and nitrile-converting enzymes have all been successfully applied in the resolution of MBH adducts, with excellent selectivity being realised in most cases.
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Affiliation(s)
- Wanyama Peter Juma
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Private Bag 3, PO WITS, 2050, Johannesburg, South Africa
| | - Dubekile Nyoni
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Private Bag 3, PO WITS, 2050, Johannesburg, South Africa
| | - Dean Brady
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Private Bag 3, PO WITS, 2050, Johannesburg, South Africa
| | - Moira L Bode
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Private Bag 3, PO WITS, 2050, Johannesburg, South Africa
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2
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Conversion of phenylglycinonitrile by recombinant Escherichia coli cells synthesizing variants of the arylacetonitrilase from Pseudomonas fluorescens EBC191. Appl Microbiol Biotechnol 2019; 103:6737-6746. [PMID: 31222384 DOI: 10.1007/s00253-019-09957-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 05/06/2019] [Accepted: 05/29/2019] [Indexed: 10/26/2022]
Abstract
The conversion of phenylglycinonitrile (2-aminophenylacetonitrile) by Escherichia coli strains was studied, which recombinantly expressed the arylacetonitrilase (NitA) from Pseudomonas fluorescens EBC191 and different nitrilase variants with altered reaction specificities. The whole-cell catalysts which formed the wild-type nitrilase converted (R,S)-phenylglycinonitrile preferentially to (S)-phenylglycine with a low degree of enantioselectivity. A recombinant strain which formed a variant of NitA produced mainly (S)-phenylglycine amide from (R,S)-phenylglycinonitrile and a second variant showed an almost complete enantioconversion and produced (R)-phenylglycine and left (S)-phenylglycinonitrile. The microbial-produced (S)-phenylglycinonitrile was used to study the chemical racemisation of (S)-phenylglycinonitrile at alkaline pH values in order to establish a dynamic kinetic resolution of the substrate. Subsequently, the conversion of (R,S)-phenylglycinonitrile by the whole-cell catalysts was studied at a pH of 10.8 which allowed a sufficient racemisation rate of phenylglycinonitrile. Surprisingly, under these conditions, strongly increased amounts of (S)-phenylglycine were formed by the recombinant E. coli cells expressing the amide-forming nitrilase variant. The aminopeptidase PepA from E. coli was identified by the construction of a deletion mutant and subsequent complementation as responsible amidase activity, which converted (S)-phenylglycine amide to (S)-phenylglycine.
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3
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Xu F, Song Y, Li Y, Li E, Wang X, Li W, Liu C. An Efficient Protocol for the Synthesis of Primary Amides via Rh‐Catalyzed Rearrangement of Aldoximes. ChemistrySelect 2018. [DOI: 10.1002/slct.201800265] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Fen Xu
- Department of Material and Chemical EngineeringZhengzhou University of Light Industry Zhengzhou 450002, P. R. China
| | - Yuan‐Yuan Song
- Department of Material and Chemical EngineeringZhengzhou University of Light Industry Zhengzhou 450002, P. R. China
| | - Yan‐Jie Li
- Department of Material and Chemical EngineeringZhengzhou University of Light Industry Zhengzhou 450002, P. R. China
| | - Er‐Long Li
- Department of Material and Chemical EngineeringZhengzhou University of Light Industry Zhengzhou 450002, P. R. China
| | - Xin‐Ran Wang
- Department of Material and Chemical EngineeringZhengzhou University of Light Industry Zhengzhou 450002, P. R. China
| | - Wen‐Yue Li
- Department of Material and Chemical EngineeringZhengzhou University of Light Industry Zhengzhou 450002, P. R. China
| | - Chun‐Sen Liu
- Department of Material and Chemical EngineeringZhengzhou University of Light Industry Zhengzhou 450002, P. R. China
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4
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Wei Q, Zhang F, Zhao X, Wang C, Xiao J, Tang W. Ru-Catalyzed highly diastereoselective hydrogenation of N-tert-butylsulfinyl ketimines for the synthesis of aryl glycine derivatives. Org Biomol Chem 2017. [DOI: 10.1039/c7ob01329a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Ru-Pincer catalyst enables the diastereoselective hydrogenation of N-tert-butylsulfinyl ketimino esters, affording a promising method for the synthesis of aryl glycine derivatives.
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Affiliation(s)
- Qiaoling Wei
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education
- and School of Chemistry & Chemical Engineering
- Shaanxi Normal University
- Xi'an
- China
| | - Feng Zhang
- College of Science
- Hunan Agricultural University
- Changsha
- China
| | - Xiaofang Zhao
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education
- and School of Chemistry & Chemical Engineering
- Shaanxi Normal University
- Xi'an
- China
| | - Chao Wang
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education
- and School of Chemistry & Chemical Engineering
- Shaanxi Normal University
- Xi'an
- China
| | - Jianliang Xiao
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education
- and School of Chemistry & Chemical Engineering
- Shaanxi Normal University
- Xi'an
- China
| | - Weijun Tang
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education
- and School of Chemistry & Chemical Engineering
- Shaanxi Normal University
- Xi'an
- China
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5
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Abstract
The hydration and hydrolysis of nitriles are valuable synthetic methods used to prepare carboxamides and carboxylic acids. However, chemical hydration and hydrolysis of nitriles involve harsh reaction conditions, have low selectivity, and generate large amounts of waste. Therefore, researchers have confined the scope of these reactions to simple nitrile substrates. However, biological transformations of nitriles are highly efficient, chemoselective, and environmentally benign, which has led synthetic organic chemists and biotechologists to study these reactions in detail over the last two decades. In nature, biological systems degrade nitriles via two distinct pathways: nitrilases catalyze the direct hydrolysis of nitriles to afford carboxylic acids with release of ammonia, and nitrile hydratases catalyze the conversion of nitriles into carboxamides, which then furnish carboxylic acids via hydrolysis in the presence of amidases. Researchers have subsequently developed biocatalytic methods into useful industrial processes for the manufacture of commodity chemicals, including acrylamide. Since the late 1990s, research by my group and others has led to enormous progress in the understanding and application of enantioselective biotransformations of nitriles in organic synthesis. In this Account, I summarize the important advances in enantioselective biotransformations of nitriles and amides, with a primary focus on research from my laboratory. I describe microbial whole-cell-catalyzed kinetic resolution of various functionalized nitriles, amino- and hydroxynitriles, and nitriles that contain small rings and the desymmetrization of prochiral and meso dinitriles and diamides. I also demonstrate how we can apply the biocatalytic protocol to synthesize natural products and bioactive compounds. These nitrile biotransformations offer an attractive and unique protocol for the enantioselective synthesis of polyfunctionalized organic compounds that are not readily obtainable by other methods. Nitrile substrates are readily available, and the mild reaction conditions are specific toward cyano and amido functional groups without interfering with other reactive functional groups. I anticipate that further advances in this field will lead to new and engineered nitrile-hydrolyzing enzymes or catalytic systems with improved activity and altered selectivity. These advances will broaden the scope of these transformations and their applications in organic synthesis.
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Affiliation(s)
- Mei-Xiang Wang
- MOE Key
Laboratory of Bioorganic
Phosphorus Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
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Large α-aminonitrilase activity screening of nitrilase superfamily members: Access to conversion and enantiospecificity by LC–MS. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2014.05.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Verma PK, Sharma U, Bala M, Kumar N, Singh B. Transition metal-free 1,3-dimethylimidazolium hydrogen carbonate catalyzed hydration of organonitriles to amides. RSC Adv 2013. [DOI: 10.1039/c2ra22868h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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8
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Zhang LB, Wang DX, Zhao L, Wang MX. Synthesis and Application of Enantioenriched Functionalized α-Tetrasubstituted α-Amino Acids from Biocatalytic Desymmetrization of Prochiral α-Aminomalonamides. J Org Chem 2012; 77:5584-91. [DOI: 10.1021/jo3007122] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Li-Bing Zhang
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Molecular Recognition
and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - De-Xian Wang
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Molecular Recognition
and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Liang Zhao
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Mei-Xiang Wang
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
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Ma X, He Y, Wang P, Lu M. The hydration of nitriles catalyzed by simple transition metal salt of the fourth period with the aid of acetaldoxime. Appl Organomet Chem 2012. [DOI: 10.1002/aoc.2876] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xiaoyun Ma
- Chemical Engineering College; Nanjing University of Science and Technology; Nanjing; 210094; People's Republic of China
| | - Ying He
- Chemical Engineering College; Nanjing University of Science and Technology; Nanjing; 210094; People's Republic of China
| | - Pengcheng Wang
- Chemical Engineering College; Nanjing University of Science and Technology; Nanjing; 210094; People's Republic of China
| | - Ming Lu
- Chemical Engineering College; Nanjing University of Science and Technology; Nanjing; 210094; People's Republic of China
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Chen P, Gao M, Wang DX, Zhao L, Wang MX. Enantioselective Biotransformations of Racemic and Meso Pyrrolidine-2,5-dicarboxamides and Their Application in Organic Synthesis. J Org Chem 2012; 77:4063-72. [DOI: 10.1021/jo300412j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peng Chen
- Beijing National Laboratory for Molecular
Sciences, CAS Key Laboratory of Molecular Recognition and Function,
Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Ming Gao
- Beijing National Laboratory for Molecular
Sciences, CAS Key Laboratory of Molecular Recognition and Function,
Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - De-Xian Wang
- Beijing National Laboratory for Molecular
Sciences, CAS Key Laboratory of Molecular Recognition and Function,
Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Liang Zhao
- MOST Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Mei-Xiang Wang
- MOST Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
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Chen P, Gao M, Wang DX, Zhao L, Wang MX. Practical biocatalytic desymmetrization of meso-N-heterocyclic dicarboxamides and their application in the construction of aza-sugar containing nucleoside analogs. Chem Commun (Camb) 2012; 48:3482-4. [PMID: 22322323 DOI: 10.1039/c2cc18012j] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Amidase-catalyzed desymmetrization of meso-N-heterocyclic dicarboxamides under very mild conditions provided a highly efficient and practical method for the preparation of enantiomerically pure carbamoyl-substituted heterocyclic amino acids that were unique and versatile platforms for the construction of both antipodes of aza-sugar containing nucleoside analogs.
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Affiliation(s)
- Peng Chen
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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12
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Ma XY, Lu M. An Improved Method for the Conversion of Nitriles to Amides Using N,N-Disubstituted Hydroxylamine. JOURNAL OF CHEMICAL RESEARCH 2011. [DOI: 10.3184/174751911x13133294115830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
An improved method for the selective hydration of nitriles to amides employing N,N-disubstituted hydroxylamine is described leading to a reduction in reaction time and improved yield. Amides having electron-donating groups, which were not reported using the original method, were obtained in excellent yields. The amount of N,N-disubstituted hydroxylamine was reduced from three equivalents to one equivalent and the use of water as the reaction medium is environmentally friendly.
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Affiliation(s)
- Xiao-yun Ma
- Chemical Engineering College, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Ming Lu
- Chemical Engineering College, Nanjing University of Science and Technology, Nanjing 210094, China
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13
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Pérez-Fuertes Y, Taylor JE, Tickell DA, Mahon MF, Bull SD, James TD. Asymmetric Strecker synthesis of α-arylglycines. J Org Chem 2011; 76:6038-47. [PMID: 21627154 DOI: 10.1021/jo200528s] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A practically simple three-component Strecker reaction for the asymmetric synthesis of enantiopure α-arylglycines has been developed. Addition of a range of aryl-aldehydes to a solution of sodium cyanide and (S)-1-(4-methoxyphenyl)ethylamine affords highly crystalline (S,S)-α-aminonitriles that are easily obtained in diastereomerically pure form. Heating the resultant (S,S)-α-aminonitriles in 6 M aqueous HCl at reflux resulted in cleavage of their chiral auxiliary fragments and concomitant hydrolysis of their nitrile groups to afford enantiopure (S)-α-arylglycines. The enantiopurities of these (S)-α-arylglycines were determined via derivatization of their corresponding methyl esters with 2-formylphenylboronic acid and (S)-BINOL, followed by (1)H NMR spectroscopic analysis of the resultant mixtures of diastereomeric iminoboronate esters.
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14
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Zhao SM, Wang MX. Synthesis of Optically Active β - Alkyl - α - methylene - δ - butyro -lactones from Enantioselective Biotransformation of Nitriles, an Unusual Inversion of Enantioselectivity†. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.20020201124] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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15
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Crisóstomo C, Crestani MG, García JJ. Catalytic hydration of cyanopyridines using nickel(0). Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2009.07.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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16
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Veitía MSI, Brun PL, Jorda P, Falguières A, Ferroud C. Synthesis of novel N-protected β3-amino nitriles: study of their hydrolysis involving a nitrilase-catalyzed step. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2009.07.045] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Ma DY, Wang DX, Pan J, Huang ZT, Wang MX. Nitrile Biotransformations for the Synthesis of Highly Enantioenriched β-Hydroxy and β-Amino Acid and Amide Derivatives: A General and Simple but Powerful and Efficient Benzyl Protection Strategy To Increase Enantioselectivity of the Amidase. J Org Chem 2008; 73:4087-91. [DOI: 10.1021/jo800074k] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Da-You Ma
- Beijing National Laboratory for Molecular Sciences, Laboratory of Chemical Biology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
| | - De-Xian Wang
- Beijing National Laboratory for Molecular Sciences, Laboratory of Chemical Biology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
| | - Jie Pan
- Beijing National Laboratory for Molecular Sciences, Laboratory of Chemical Biology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
| | - Zhi-Tang Huang
- Beijing National Laboratory for Molecular Sciences, Laboratory of Chemical Biology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
| | - Mei-Xiang Wang
- Beijing National Laboratory for Molecular Sciences, Laboratory of Chemical Biology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
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Alonso FOM, Oestreicher EG, Antunes OAC. Production of enantiomerically pure D-Phenylglycine using Pseudomonas aeruginosa 10145 as biocatalyst. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2008. [DOI: 10.1590/s0104-66322008000100002] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Ma DY, Wang DX, Pan J, Huang ZT, Wang MX. Nitrile biotransformations for the synthesis of enantiomerically enriched β2-, and β3-hydroxy and -alkoxy acids and amides, a dramatic O-substituent effect of the substrates on enantioselectivity. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.tetasy.2008.01.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Liu J, Wang DX, Zheng QY, Wang MX. Biocatalytic Synthesis of Highly Enantiopure 1,4-Benzodioxane-2-carboxylic Acid and Amide. CHINESE J CHEM 2006. [DOI: 10.1002/cjoc.200690312] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Chemoenzymatic synthesis of enantiopure geminally dimethylated cyclopropane-based C2- and pseudo-C2-symmetric diamines. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.tetasy.2006.10.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Crestani M, Arévalo A, García J. Catalytic Hydration of Benzonitrile and Acetonitrile using Nickel(0). Adv Synth Catal 2006. [DOI: 10.1002/adsc.200505382] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Moorthy JN, Singhal N. Facile and highly selective conversion of nitriles to amides via indirect acid-catalyzed hydration using TFA or AcOH-H2SO4. J Org Chem 2005; 70:1926-9. [PMID: 15730325 DOI: 10.1021/jo048240a] [Citation(s) in RCA: 120] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Both aliphatic and aromatic nitriles are conveniently and selectively converted in a single step, via an indirect acid-catalyzed hydration, into the corresponding amides in 1-8 h using a TFA-H2SO4 mixture as a reagent system. Although the same reagent did not work for the sterically hindered nitriles such as mesitonitrile, the transformation could be accomplished by changing TFA to AcOH at higher temperatures (>90 degrees C).
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Control of the nitrile-hydrolyzing enzyme activity in Rhodococcus rhodochrous IFO 15564: preferential action of nitrile hydratase and amidase depending on the reaction condition factors and its application to the one-pot preparation of amides from aldehydes. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.molcatb.2003.12.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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26
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Synthesis of high enantiomeric purity gem-dihalocyclopropane derivatives from biotransformations of nitriles and amides. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.tetasy.2003.11.016] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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27
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Cowan DA, Cameron RA, Tsekoa TL. Comparative biology of mesophilic and thermophilic nitrile hydratases. ADVANCES IN APPLIED MICROBIOLOGY 2003; 52:123-58. [PMID: 12964242 DOI: 10.1016/s0065-2164(03)01005-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Don A Cowan
- Advanced Research Centre for Applied Microbiology, Department of Biotechnology, University of the Western Cape, Bellville 7535, Cape Town, South Africa
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Wang MX, Lin SJ, Liu CS, Zheng QY, Li JS. Nitrile biotransformations for highly efficient and enantioselective syntheses of electrophilic oxiranecarboxamides. J Org Chem 2003; 68:4570-3. [PMID: 12762774 DOI: 10.1021/jo0267201] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Catalyzed by a nitrile hydratase/amidase-containing microbial Rhodococcus sp. AJ270 whole-cell catalyst, a number of racemic trans-2,3-epoxy-3-arylpropanenitriles 1 underwent rapid and efficient hydrolysis under very mild conditions to afford 2R,3S-2-arylglycidamides 2 in excellent yield with enantiomeric excess higher than 99.5%. The overall enantioselectivity of the biotransformations originated from the combined effects of a dominantly high 2S-enantioselective amidase and low 2S-enantioselective nitrile hydratase involved in the cell. The influence of the substrates on both reaction efficiency and enantioselectivity was also discussed in terms of steric and electronic effects.
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Affiliation(s)
- Mei-Xiang Wang
- Laboratory for Chemical Biology, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China.
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29
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Guo L, Lin SJ, Yang YF, Qi L, Wang MX, Chen Y. Fast enantioseparation of arylglycine amides by capillary electrophoresis with highly sulfated-beta-cyclodextrin as a chiral selector. J Chromatogr A 2003; 998:221-8. [PMID: 12862386 DOI: 10.1016/s0021-9673(03)00653-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Nine racemic arylglycine amides were synthesized and successfully enantioseparated by capillary electrophoresis (CE) using highly sulfated beta-cyclodextrin (HS-beta-CD) as a chiral selector. Baseline enantioseparation of the analytes was obtained around neutral pH but not in the acidic conditions that are commonly used. HS-beta-CD content, buffer pH, type and concentration, and organic modifier concentration were studied and optimized for fast and efficient separation. A chiral CE separation system composed of 1.5% (w/v) HS-beta-CD, 0 to 10% (v/v) methanol and 20 mM 3-(N-morpholino)propanesulfonic acid at pH 6.5 was shown suitable for baseline enantioseparation of the mentioned amides within 6 min, including simultaneous enantioseparation of three positional isomer series (methyl-, methoxyl or chloro-substituted). By using this system, D-enantiomers migrated ahead of the L-enantiomers and the enantiomeric resolution order of arylglycine amides was more or less parallel to the pK(a), order of the analytes.
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Affiliation(s)
- Lei Guo
- Laboratory of Chemical Biology, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, P.O. Box 2709, Beijing 100080, People's Republic of China
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Solhy A, Smahi A, El Badaoui H, Elaabar B, Amoukal A, Tikad A, Sebti S, Macquarrie D. Efficient hydration of nitriles to amides catalysed by sodium nitrate modified fluorapatite. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)00872-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Wang MX, Feng GQ. Enzymatic synthesis of optically active 2-methyl- and 2,2-dimethylcyclopropanecarboxylic acids and their derivatives. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s1381-1177(02)00105-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Wang MX, Lin SJ. Practical and convenient enzymatic synthesis of enantiopure alpha-amino acids and amides. J Org Chem 2002; 67:6542-5. [PMID: 12201779 DOI: 10.1021/jo0256282] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Catalyzed by the nitrile hydratase and the amidease in Rhodococcus sp. AJ270 cells under very mild conditions, a number of alpha-aryl- and alpha-alkyl-substituted DL-glycine nitriles 1 rapidly underwent a highly enantioselective hydrolysis to afford D-(-)-alpha-amino acid amides 2 and L-(+)-alpha-amino acids 3 in high yields with excellent enantiomeric excesses in most cases. The overall enantioselectivity of the biotransformations of nitriles originated from the combined effects of a high L-enantioselective amidase and a low enantioselective nitrile hydratase. The influence of the substrates on both reaction efficiency and enantioselectivity was also discussed in terms of steric and electronic effects. Coupled with chemical hydrolysis of D-(-)-alpha-phenylglycine amide, biotransformation of DL-phenylglycine nitrile was applied in practical scale to produce both D- and L-phenylglycines in high optical purity.
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Affiliation(s)
- Mei-Xiang Wang
- Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China.
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Wang MX, Zhao SM. Highly enantioselective biotransformations of 2-aryl-4-pentenenitriles, a novel chemoenzymatic approach to ( R )-(−)-baclofen. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)01449-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Wang MX, Zhao SM. Synthesis of enantiomerically enriched (S)-(+)-2-aryl-4-pentenoic acids and (R)-(−)-2-aryl-4-pentenamides via microbial hydrolysis of nitriles, a chemoenzymatic approach to stereoisomers of α,γ-disubstituted γ-butyrolactones. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s0957-4166(02)00470-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Enzymatic desymmetrization of 3-alkyl- and 3-arylglutaronitriles, a simple and convenient approach to optically active 4-amino-3-phenylbutanoic acids. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s0957-4166(02)00028-9] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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