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Ibrahim MA. Microwave-assisted synthesis of α-aryl malonates: Key intermediates for the preparation of azaheterocycles. ARAB J CHEM 2016. [DOI: 10.1016/j.arabjc.2016.01.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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2
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Smith ME, Fibinger MPC, Bornscheuer UT, Masterson DS. An Investigation of the Interaction of Co-Solvent with Substrates in the Pig Liver Esterase-Catalyzed Hydrolysis of Malonate Esters. ChemCatChem 2015. [DOI: 10.1002/cctc.201500597] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Maureen E. Smith
- Department of Chemistry and Biochemistry; The University of Southern Mississippi; 118 College Drive 5043 Hattiesburg MS 39406 USA
| | - Michael P. C. Fibinger
- Institute of Biochemistry; Department of Biotechnology and Enzyme Catalysis; Greifswald University; Felix-Hausdorff-Strasse 4 17487 Greifswald Germany
| | - Uwe T. Bornscheuer
- Institute of Biochemistry; Department of Biotechnology and Enzyme Catalysis; Greifswald University; Felix-Hausdorff-Strasse 4 17487 Greifswald Germany
| | - Douglas S. Masterson
- Department of Chemistry and Biochemistry; The University of Southern Mississippi; 118 College Drive 5043 Hattiesburg MS 39406 USA
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3
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Hernández-Linares MG, Guerrero-Luna G, Pérez-Estrada S, Ellison M, Ortin MM, Garcia-Garibay MA. Large-Scale Green Chemical Synthesis of Adjacent Quaternary Chiral Centers by Continuous Flow Photodecarbonylation of Aqueous Suspensions of Nanocrystalline Ketones. J Am Chem Soc 2015; 137:1679-84. [DOI: 10.1021/ja512524j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
| | - Gabriel Guerrero-Luna
- Department of Chemistry
and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Salvador Pérez-Estrada
- Department of Chemistry
and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Martha Ellison
- Department of Chemistry
and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Maria-Mar Ortin
- Department of Chemistry
and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Miguel A. Garcia-Garibay
- Department of Chemistry
and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
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4
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Johnson A, Saunders MJ, Back TG. Stereodivergent synthesis of the LFA-1 antagonist BIRT-377 by porcine liver esterase desymmetrization and Curtius rearrangement. Org Biomol Chem 2015; 13:1463-9. [DOI: 10.1039/c4ob02303j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
BIRT-377 was synthesized by enzymatic desymmetrization in conjunction with Curtius rearrangement, affording a key α-quaternary amine intermediate in high ee.
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Affiliation(s)
- Aaron Johnson
- Department of Chemistry
- University of Calgary
- 2500 University Drive NW
- Calgary AB
- Canada
| | - Matthew J. Saunders
- Department of Chemistry
- University of Calgary
- 2500 University Drive NW
- Calgary AB
- Canada
| | - Thomas G. Back
- Department of Chemistry
- University of Calgary
- 2500 University Drive NW
- Calgary AB
- Canada
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5
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Banerjee S, Smith J, Smith J, Faulkner C, Masterson DS. A stereoselective cyclization strategy for the preparation of γ-lactams and their use in the synthesis of α-methyl-β-proline. J Org Chem 2012; 77:10925-30. [PMID: 23126540 DOI: 10.1021/jo3015903] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A straightforward stereoselective and enantiodivergent cyclization strategy for the construction of γ-lactams is described. The cyclization strategy makes use of chiral malonic esters prepared from enantiomerically enriched monoesters of disubstituted malonic acid. The cyclization occurs with the selective displacement of a substituted benzyl alcohol as the leaving group. A Hammett study illustrates that the cyclization is under electronic control. The resulting γ-lactam can be readily converted into a novel proline analogue.
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Affiliation(s)
- Souvik Banerjee
- Department of Chemistry and Biochemistry, The University of Southern Mississippi, 118 College Drive No. 5043, Hattiesburg, Mississippi 39406, USA
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Smith ME, Banerjee S, Shi Y, Schmidt M, Bornscheuer UT, Masterson DS. Investigation of the Cosolvent Effect on Six Isoenzymes of PLE in the Enantioselective Hydrolysis of Selected α,α-Disubstituted Malonate Esters. ChemCatChem 2012. [DOI: 10.1002/cctc.201100490] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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7
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Behera M, Venkat Ragavan R, Sambaiah M, Erugu B, Rama Krishna Reddy J, Mukkanti K, Yennam S. An efficient method for the preparation of mono α-aryl derivatives of diethyl malonate and ethyl cyanoacetate using ethyl-1-imidazole carbamate (EImC). Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2011.12.067] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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8
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Iosub V, Haberl AR, Leung J, Tang M, Vembaiyan K, Parvez M, Back TG. Enantioselective Synthesis of α-Quaternary Amino Acid Derivatives by Sequential Enzymatic Desymmetrization and Curtius Rearrangement of α,α-Disubstituted Malonate Diesters. J Org Chem 2010; 75:1612-9. [DOI: 10.1021/jo902584r] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Violeta Iosub
- Department of Chemistry, University of Calgary, Calgary, AB, Canada, T2N 1N4
| | - Anton R. Haberl
- Department of Chemistry, University of Calgary, Calgary, AB, Canada, T2N 1N4
| | - Jennifer Leung
- Department of Chemistry, University of Calgary, Calgary, AB, Canada, T2N 1N4
| | - Michael Tang
- Department of Chemistry, University of Calgary, Calgary, AB, Canada, T2N 1N4
| | - Kannan Vembaiyan
- Department of Chemistry, University of Calgary, Calgary, AB, Canada, T2N 1N4
| | - Masood Parvez
- Department of Chemistry, University of Calgary, Calgary, AB, Canada, T2N 1N4
| | - Thomas G. Back
- Department of Chemistry, University of Calgary, Calgary, AB, Canada, T2N 1N4
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9
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Affiliation(s)
- Kurt Faber
- Institute of Organic Chemistry, Graz University of Technology, Stremayrgasse 16, A-8010, Graz, Austria
| | - Gianluca Ottolina
- Istituto di Chimica degli Ormoni, C.N.R., Via Mario Bianco 9, 1-20131, Milano, Italy
| | - Sergio Riva
- Istituto di Chimica degli Ormoni, C.N.R., Via Mario Bianco 9, 1-20131, Milano, Italy
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Development of a practical mass spectrometry based assay for determining enantiomeric excess. A fast and convenient method for the optimization of PLE-catalyzed hydrolysis of prochiral disubstituted malonates. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2009.05.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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11
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Cabrera Z, Lopez-Gallego F, Fernandez-Lorente G, Palomo JM, Montes T, Grazu V, Guisán JM, Fernández-Lafuente R. Asymmetric hydrolysis of dimethyl phenylmalonate by immobilized penicillin G acylase from E. coli. Enzyme Microb Technol 2007. [DOI: 10.1016/j.enzmictec.2006.11.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Synthetic applications of enzymatic reactions in organic solvents. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2006. [DOI: 10.1007/bfb0102317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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13
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Hu B, Prashad M, Har D, Prasad K, Repič O, Blacklock TJ. An Efficient Synthesis of (R)-2-Butyl-3-hydroxypropionic Acid. Org Process Res Dev 2006. [DOI: 10.1021/op060199l] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bin Hu
- Process R & D, Chemical and Analytical Development, Novartis Pharmaceuticals Corporation, One Health Plaza, East Hanover, New Jersey 07936, U.S.A
| | - Mahavir Prashad
- Process R & D, Chemical and Analytical Development, Novartis Pharmaceuticals Corporation, One Health Plaza, East Hanover, New Jersey 07936, U.S.A
| | - Denis Har
- Process R & D, Chemical and Analytical Development, Novartis Pharmaceuticals Corporation, One Health Plaza, East Hanover, New Jersey 07936, U.S.A
| | - Kapa Prasad
- Process R & D, Chemical and Analytical Development, Novartis Pharmaceuticals Corporation, One Health Plaza, East Hanover, New Jersey 07936, U.S.A
| | - Oljan Repič
- Process R & D, Chemical and Analytical Development, Novartis Pharmaceuticals Corporation, One Health Plaza, East Hanover, New Jersey 07936, U.S.A
| | - Thomas J. Blacklock
- Process R & D, Chemical and Analytical Development, Novartis Pharmaceuticals Corporation, One Health Plaza, East Hanover, New Jersey 07936, U.S.A
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Ellison ME, Ng D, Dang H, Garcia-Garibay MA. Enantiospecific synthesis of vicinal stereogenic tertiary and quaternary centers by combination of configurationally-trapped radical pairs in crystalline solids. Org Lett 2003; 5:2531-4. [PMID: 12841773 DOI: 10.1021/ol0347803] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] Photochemical irradiation of crystalline (2R,4S)-2-carbomethoxy-4-cyano-2,4-diphenyl-3-butanone 1 led to highly efficient decarbonylation reactions. Experiments with optically pure and racemic crystals showed that the intermediate radical pairs undergo a highly diastereo- and enantiospecific radical-radical combination that leads to the formation of two adjacent stereogenic centers in good chemical yield and with high chemical control. Reactions with chiral crystals occurred with quantitative enantiomeric yields and >95% diastereomeric yields.
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Affiliation(s)
- Martha E Ellison
- Department of Chemistry and Biochemistry, University of California-Los Angeles, Los Angeles, California 90095-1569, USA
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16
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Beare NA, Hartwig JF. Palladium-catalyzed arylation of malonates and cyanoesters using sterically hindered trialkyl- and ferrocenyldialkylphosphine ligands. J Org Chem 2002; 67:541-55. [PMID: 11798329 DOI: 10.1021/jo016226h] [Citation(s) in RCA: 181] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Palladium-catalyzed reactions of aryl bromides and chlorides with two common stabilized carbanions-enolates of dialkyl malonates and alkyl cyanoesters-are reported. An exploration of the scope of these reactions was conducted, and the processes were shown to occur in a general fashion. Using P(t-Bu)(3) (1), the pentaphenylferrocenyl ligand (Ph(5)C(5))Fe(C(5)H(4))P(t-Bu)(2) (2), or the adamantyl ligand (1-Ad)P(t-Bu)(2) (3), reactions of electron-poor and electron-rich, sterically hindered and unhindered aryl bromides and chlorides were shown to react with diethyl malonate, di-tert-butyl malonate, diethyl fluoromalonate, ethyl cyanoacetate, and ethyl phenylcyanoacetate. Although alkyl malonates and ethyl alkylcyanoacetates did not react with aryl halides using these catalysts, the same products were formed conveniently in one pot from diethylmalonate by cross-coupling of an aryl halide in the presence of excess base and subsequent alkylation.
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Affiliation(s)
- Neil A Beare
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107, USA
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Salgado A, Huybrechts T, Eeckhaut A, Van der Eycken J, Szakonyi Z, Fülöp F, Tkachev A, De Kimpe N. Synthesis of (1S)-1-amino-2,2-dimethylcyclopropane-1-carboxylic acid via PLE mediated hydrolysis of bis(2,2,2-trifluoroethyl) 2,2-dimethylcyclopropane-1,1-dicarboxylate. Tetrahedron 2001. [DOI: 10.1016/s0040-4020(01)00112-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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19
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Honda T, Koizumi T, Komatsuzaki Y, Yamashita R, Kanai K, Nagase H. Chemoenzymatic synthesis of an α-substituted serine derivative. ACTA ACUST UNITED AC 1999. [DOI: 10.1016/s0957-4166(99)00270-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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20
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Chemoenzymatic synthesis of 2-substituted 2-fluoro-1,3-dioxygenated chiral building blocks. ACTA ACUST UNITED AC 1999. [DOI: 10.1016/s0957-4166(99)00088-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Lemke K, Lemke M, Theil F. A Three-Dimensional Predictive Active Site Model for Lipase from Pseudomonas cepacia. J Org Chem 1997. [DOI: 10.1021/jo970838d] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Karin Lemke
- Institut für Angewandte Chemie Berlin-Adlershof e.V., Rudower Chaussee 5, D-12484 Berlin, Germany
| | - Michael Lemke
- Institut für Angewandte Chemie Berlin-Adlershof e.V., Rudower Chaussee 5, D-12484 Berlin, Germany
| | - Fritz Theil
- Institut für Angewandte Chemie Berlin-Adlershof e.V., Rudower Chaussee 5, D-12484 Berlin, Germany
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Breznik M, Kikelj D. Pig liver esterase catalyzed hydrolysis of dimethyl and diethyl 2-methyl-2-(o-nitrophenoxy)malonates. ACTA ACUST UNITED AC 1997. [DOI: 10.1016/s0957-4166(96)00535-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Herdan JM, Balulescu M, Cira O. Enantioselective hydrolysis of racemic esters using pig liver esterase. ACTA ACUST UNITED AC 1996. [DOI: 10.1016/1381-1169(95)00241-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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25
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O. Hallinan K, Honda T. Enantiodivergent Synthesis of the Key Intermediate for Aphanorphine by Chemoenzymatic Process. Tetrahedron 1995. [DOI: 10.1016/0040-4020(95)00784-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Basavaiah D, Krishna PR, Bharathi TK. A convenient enantioselective synthesis of trans-2-aryloxycyclohexan-1-ols using pig liver acetone powder (PLAP) as biocatalyst. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/0957-4166(95)00029-o] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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27
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Shapira M, Gutman AL. Enzymatic synthesis of chiral monosubstituted malonates in organic solvents. ACTA ACUST UNITED AC 1994. [DOI: 10.1016/0957-4166(94)80080-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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28
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Faber K, Franssen MC. Prospects for the increased application of biocatalysts in organic transformations. Trends Biotechnol 1993; 11:461-70. [PMID: 7764400 DOI: 10.1016/0167-7799(93)90079-o] [Citation(s) in RCA: 82] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Predicting the future use of biocatalysts for the transformation of organic compounds--both natural substrates and other compounds--needs to take many factors into account. To date, relatively few biotransformations have been developed to the industrial scale, primarily because there has been little economic incentive to replace existing successful processes with biocatalysts, with their inherent problems of instability, lack of selectivity and narrow operational range. However, advances that improve biocatalyst performance, coupled with the increasing emphasis on 'chirotechnology', are driving the development of biocatalysis as a complementary, if not a rival technology to existing chemical approaches.
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Affiliation(s)
- K Faber
- Institute of Organic Chemistry, Graz University of Technology, Austria
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Enzymes in organic synthesis 51. Probing the dimensions of the large hydrophobic pocket of the active site of pig liver esterase. ACTA ACUST UNITED AC 1993. [DOI: 10.1016/s0957-4166(00)82251-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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30
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Exl C, Hönig H, Renner G, Rogi-Kohlenprath R, Seebauer V, Seufer-Wasserthal P. How large are the active sites of the lipases from Candida rugosa and from Pseudomonas cepacia ? ACTA ACUST UNITED AC 1992. [DOI: 10.1016/0957-4166(92)80014-n] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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