1
|
Crochet P, Cadierno V. Access to
α
‐ and
β
‐Hydroxyamides and Ureas Through Metal‐Catalyzed C≡N Bond Hydration and Transfer Hydration Reactions. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Pascale Crochet
- Departamento de Química Orgánica e Inorgánica Universidad de Oviedo Julián Clavería 8 33006 Oviedo Spain
| | - Victorio Cadierno
- Departamento de Química Orgánica e Inorgánica Universidad de Oviedo Julián Clavería 8 33006 Oviedo Spain
| |
Collapse
|
2
|
Mareya TM, Coady TM, O'Reilly C, Kinsella M, Coffey L, Lennon CM. Process Optimisation Studies and Aminonitrile Substrate Evaluation of Rhodococcus erythropolis SET1, A Nitrile Hydrolyzing Bacterium. ChemistryOpen 2020; 9:512-520. [PMID: 32346499 PMCID: PMC7184877 DOI: 10.1002/open.202000088] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Indexed: 11/16/2022] Open
Abstract
A comprehensive series of optimization studies including pH, solvent and temperature were completed on the nitrile hydrolyzing Rhodococcus erythropolis bacterium SET1 with the substrate 3-hydroxybutyronitrile. These identified temperature of 25 °C and pH of 7 as the best conditions to retain enantioselectivity and activity. The effect of the addition of organic solvents to the biotransformation mixture was also determined. The results of the study suggested that SET1 is suitable for use in selected organo-aqueous media at specific ratios only. The functional group tolerance of the isolate with unprotected and protected β-aminonitriles, structural analogues of β-hydroxynitriles was also investigated with disappointingly poor isolated yields and selectivity obtained. The isolate was further evaluated with the α- aminonitrile phenylglycinonitrile generating acid in excellent yield and ee (>99 % (S) - isomer and 50 % yield). A series of pH studies with this substrate indicated pH 7 to be the optimum pH to avoid product and substrate degradation.
Collapse
Affiliation(s)
- Tatenda M. Mareya
- Department of ScienceWaterford Institute of TechnologyCork RoadWaterfordX91K0EKIreland
| | - Tracey M. Coady
- Department of ScienceWaterford Institute of TechnologyCork RoadWaterfordX91K0EKIreland
| | - Catherine O'Reilly
- Department of ScienceWaterford Institute of TechnologyCork RoadWaterfordX91K0EKIreland
| | - Michael Kinsella
- Department of ScienceWaterford Institute of TechnologyCork RoadWaterfordX91K0EKIreland
| | - Lee Coffey
- Department of ScienceWaterford Institute of TechnologyCork RoadWaterfordX91K0EKIreland
| | - Claire M. Lennon
- Department of ScienceWaterford Institute of TechnologyCork RoadWaterfordX91K0EKIreland
| |
Collapse
|
3
|
González-Fernández R, Crochet P, Cadierno V. Synthesis of β-hydroxyamides through ruthenium-catalyzed hydration/transfer hydrogenation of β-ketonitriles in water: Scope and limitations. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.05.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
4
|
Zhu L, Kitanosono T, Xu P, Kobayashi S. Chiral Cu(II)-catalyzed enantioselective β-borylation of α,β-unsaturated nitriles in water. Beilstein J Org Chem 2015; 11:2007-11. [PMID: 26664621 PMCID: PMC4661013 DOI: 10.3762/bjoc.11.217] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 09/01/2015] [Indexed: 12/14/2022] Open
Abstract
The promising performance of copper(II) complexes was demonstrated for asymmetric boron conjugate addition to α,β-unsaturated nitriles in water. The catalyst system, which consisted of Cu(OAc)2 and a chiral 2,2′-bipyridine ligand, enabled β-borylation and chiral induction in water. Subsequent protonation, which was accelerated in aqueous medium, led to high activity of this asymmetric catalysis. Both solid and liquid substrates were suitable despite being insoluble in water.
Collapse
Affiliation(s)
- Lei Zhu
- Department of Chemistry, School of Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Taku Kitanosono
- Department of Chemistry, School of Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Pengyu Xu
- Department of Chemistry, School of Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Shū Kobayashi
- Department of Chemistry, School of Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan
| |
Collapse
|
5
|
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.
Collapse
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
| |
Collapse
|
6
|
Coady TM, Coffey LV, O'Reilly C, Lennon CM. Substrate Evaluation ofRhodococcus erythropolisSET1, a Nitrile Hydrolysing Bacterium, Demonstrating Dual Activity Strongly Dependent on Nitrile Sub-Structure. European J Org Chem 2015. [DOI: 10.1002/ejoc.201403201] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
7
|
A high throughput screening strategy for the assessment of nitrile-hydrolyzing activity towards the production of enantiopure β-hydroxy acids. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcatb.2013.08.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
8
|
Zhang B, Chen T, Chen Z, Wang M, Zheng D, Wu J, Jiang X, Li X. Synthesis and anti-hyperglycemic activity of hesperidin derivatives. Bioorg Med Chem Lett 2012; 22:7194-7. [DOI: 10.1016/j.bmcl.2012.09.049] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2012] [Revised: 09/13/2012] [Accepted: 09/17/2012] [Indexed: 11/26/2022]
|
9
|
Reis JS, Andrade LH. Lipase-catalyzed kinetic resolution of β-borylated carboxylic esters. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2012.08.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
10
|
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
| |
Collapse
|
11
|
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
| |
Collapse
|
12
|
Microbial whole cell-catalyzed desymmetrization of prochiral malonamides: practical synthesis of enantioenriched functionalized carbamoylacetates and their application in the preparation of unusual α-amino acids. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.05.103] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
13
|
|
14
|
Overexpression of a recombinant amidase in a complex auto-inducing culture: purification, biochemical characterization, and regio- and stereoselectivity. J Ind Microbiol Biotechnol 2011; 38:1931-8. [DOI: 10.1007/s10295-011-0979-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2011] [Accepted: 04/19/2011] [Indexed: 11/26/2022]
|
15
|
Zhang ZJ, Xu JH, He YC, Ouyang LM, Liu YY, Imanaka T. Efficient production of (R)-(−)-mandelic acid with highly substrate/product tolerant and enantioselective nitrilase of recombinant Alcaligenes sp. Process Biochem 2010. [DOI: 10.1016/j.procbio.2010.02.011] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
16
|
Yang L, Wang DX, Zheng QY, Pan J, Huang ZT, Wang MX. Highly efficient and concise synthesis of both antipodes of SB204900, clausenamide, neoclausenamide, homoclausenamide and ζ-clausenamide. Implication of biosynthetic pathways of clausena alkaloids. Org Biomol Chem 2009; 7:2628-34. [DOI: 10.1039/b901965k] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
17
|
Fujino A, Sugai T. Chemoenzymatic Approach to Enantiomerically Pure (R)-3-Hydroxy-3-methyl-4-pentenoic Acid Ester and Its Application to a Formal Total Synthesis of Taurospongin A. Adv Synth Catal 2008. [DOI: 10.1002/adsc.200800191] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
18
|
|
19
|
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
| |
Collapse
|
20
|
Höhne M, Robins K, Bornscheuer U. A Protection Strategy Substantially Enhances Rate and Enantioselectivity in ω-Transaminase-Catalyzed Kinetic Resolutions. Adv Synth Catal 2008. [DOI: 10.1002/adsc.200800030] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
21
|
Wang JY, Wang DX, Pan J, Huang ZT, Wang MX. Nitrile and Amide Biotransformations for the Synthesis of Enantiomerically Pure 3-Arylaziridine-2-carboxamide Derivatives and Their Stereospecific Ring-Opening Reactions. J Org Chem 2007; 72:9391-4. [DOI: 10.1021/jo701732h] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jin-Yuan Wang
- 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
| |
Collapse
|
22
|
Gao M, Wang DX, Zheng QY, Huang ZT, Wang MX. Remarkable Electronic and Steric Effects in the Nitrile Biotransformations for the Preparation of Enantiopure Functionalized Carboxylic Acids and Amides: Implication for an Unsaturated Carbon−Carbon Bond Binding Domain of the Amidase. J Org Chem 2007; 72:6060-6. [PMID: 17604398 DOI: 10.1021/jo070581b] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Biotransformations of various functionalized racemic nitriles catalyzed by Rhodococcus erythropolis AJ270, a nitrile hydratase/amidase-containing microbial whole-cell catalyst, were studied. While the nitrile hydratase exhibits high catalytic efficiency but very low enantioselectivity against almost all nitrile substrates examined, the amidase is very sensitive toward the structure of the amides. The release of the steric crowdedness around the stereocenter of the substrates and the introduction of an unsaturated carbon-carbon bond into the substrates led to the significant acceleration of the reaction rate and the dramatic enhancement of the enantioselectivity. Nitrile biotransformations provide a unique and high-yielding synthetic route to highly enantiopure carboxylic acids and amides functionalized with an allyl, propargyl, allenyl, or vinyl group. The synthetic applications have been demonstrated by the synthesis of enantiopure heterocyclic compounds including iodoenol gamma-lactone, gamma-lactam, and 3-allyl-1-phenyl-3,4-dihydro-1H-quinolin-2-one derivatives.
Collapse
Affiliation(s)
- Ming Gao
- Beijing National Laboratory for Molecular Sciences, Laboratory of Chemical Biology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
| | | | | | | | | |
Collapse
|
23
|
Wang JY, Wang DX, Zheng QY, Huang ZT, Wang MX. Nitrile Biotransformations for the Efficient Synthesis of Highly Enantiopure 1-Arylaziridine-2-carboxylic Acid Derivatives and Their Stereoselective Ring-Opening Reactions. J Org Chem 2007; 72:2040-5. [PMID: 17286438 DOI: 10.1021/jo062339v] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Catalyzed by the Rhodococcus erythropolis AJ270 whole cell catalyst under very mild conditions, biotransformations of racemic 1-arylaziridine-2-carbonitriles proceeded efficiently and enantioselectively to produce highly enantiopure S-1-arylaziridine-2-carboxamides and R-1-arylaziridine-2-carboxylic acids in excellent yields. Although the nitrile hydratase exhibits no selectivity against all nitrile substrates, the amidase is highly R-enantioselective towards 1-arylaziridine-2-carboxamides. When treated with benzyl bromide, 1-phenylaziridine-2S-carboxamide underwent a highly regioselective and enantiospecific ring-opening reaction to afford an almost quantitative yield of R-beta-[(benzyl)phenylamino]-alpha-bromopropanamide (C-2 attack) and R-alpha-[(benzyl)phenylamino]-beta-bromopropanamide (C-3 attack) in a 10.5:1 ratio. Further treatment of the resulting ring-opening products with an N-nucleophilic reagent such as amine and azide led to, through most probably the aziridinium intermediate, the formation of S-alpha-substituted-beta-[(benzyl)phenylamino]propanamides in good chemical yields with high enantiomeric purity.
Collapse
Affiliation(s)
- Jin-Yuan Wang
- Beijing National Laboratory for Molecular Sciences, Laboratory of Chemical Biology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
| | | | | | | | | |
Collapse
|
24
|
Gao M, Wang DX, Zheng QY, Wang MX. An Unusual β-Vinyl Effect Leading to High Efficiency and Enantioselectivity of the Amidase, Nitrile Biotransformations for the Preparation of Enantiopure 3-Arylpent-4-enoic Acids and Amides and Their Applications in Synthesis. J Org Chem 2006; 71:9532-5. [PMID: 17137391 DOI: 10.1021/jo061664f] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Biotransformations of 3-arylpent-4-enenitriles catalyzed by Rhodococcus erythropolis AJ270, a nitrile hydratase/amidase-containing microbial whole-cell catalyst were studied, and an unusual beta-vinyl effect of the substrate on the biocatalytic efficiency and enantioselectivity of the amidase was observed. While 3-arylpent-4-enenitriles and 3-phenylpentanenitrile were efficiently hydrated by the action of the less R-enantioselective nitrile hydratase, the amidase showed greater activity and higher enantioselectivity against 3-arylpent-4-enoic acid amides than 3-arylpentanoic acid amides. Under very mild conditions, nitrile biotransformations provided an efficient synthesis of highly enantiopure (R)-3-arylpent-4-enoic acids and (S)-3-arylpent-4-enoic acid amides, and their applications were demonstrated by the synthesis of chiral gamma-amino acid, 2-pyrrolidinone, and 2-azepinone derivatives.
Collapse
Affiliation(s)
- Ming Gao
- Beijing National Laboratory for Molecular Sciences, Laboratory of Chemical Biology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
| | | | | | | |
Collapse
|
25
|
Kamila S, Zhu D, Biehl ER, Hua L. Unexpected Stereorecognition in Nitrilase-Catalyzed Hydrolysis of β-Hydroxy Nitriles. Org Lett 2006; 8:4429-31. [PMID: 16986917 DOI: 10.1021/ol061542+] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Biocatalytic enantioselective hydrolysis of beta-hydroxy nitriles to corresponding (S)-enriched beta-hydroxy carboxylic acids has been achieved for the first time by an isolated nitrilase bll6402 from Bradyrhizobium japonicum USDA110. This offers a new "green" approach to optically pure beta-hydroxy nitriles and beta-hydroxy carboxylic acids. The observed remote stereorecognition is surprising because this nitrilase shows no enantioselectivity for the hydrolysis of alpha-hydroxy nitriles such as mandelonitrile.
Collapse
Affiliation(s)
- Sukanta Kamila
- Department of Chemistry, Southern Methodist University, Dallas, Texas 75275, USA
| | | | | | | |
Collapse
|