1
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Wang F, Nishimoto Y, Yasuda M. Lewis Acid‐Catalyzed Diastereoselective C−C Bond Insertion of Diazo Esters into Secondary Benzylic Halides for the Synthesis of α,β‐Diaryl‐β‐haloesters. Angew Chem Int Ed Engl 2022; 61:e202204462. [DOI: 10.1002/anie.202204462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Fei Wang
- Department of Applied Chemistry Graduate School of Engineering Osaka University 2-1 Yamadaoka Suita Osaka 565-0871 Japan
| | - Yoshihiro Nishimoto
- Department of Applied Chemistry Graduate School of Engineering Osaka University 2-1 Yamadaoka Suita Osaka 565-0871 Japan
- Innovative Catalysis Science Division Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI) Osaka University Suita Osaka 565-0871 Japan
| | - Makoto Yasuda
- Department of Applied Chemistry Graduate School of Engineering Osaka University 2-1 Yamadaoka Suita Osaka 565-0871 Japan
- Innovative Catalysis Science Division Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI) Osaka University Suita Osaka 565-0871 Japan
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2
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Wang F, Nishimoto Y, Yasuda M. Lewis Acid‐Catalyzed Diastereoselective C–C Bond Insertion of Diazo Esters into Secondary Benzylic Halides for the Synthesis of α,β‐Diaryl‐β‐haloesters. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Fei Wang
- Osaka University School of Engineering Graduate School of Engineering: Osaka Daigaku Kogakubu Daigakuin Kogaku Kenkyuka Applied Chemistry JAPAN
| | | | - Makoto Yasuda
- Osaka University Department of Applied Chemistry, Graduate School of Engineering 2-1 Yamadaoka, Suita 565-0871 Osaka JAPAN
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3
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Hosokawa S. Synthesis of Polyacetate and Acetate-propionate Hybrid-type Polyketides Using Novel Remote Asymmetric Induction Reactions. J SYN ORG CHEM JPN 2021. [DOI: 10.5059/yukigoseikyokaishi.79.109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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4
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Moreira R, Noden M, Taylor SD. Synthesis of Azido Acids and Their Application in the Preparation of Complex Peptides. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1707314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AbstractAzido acids are important synthons for the synthesis of complex peptides. As a protecting group, the azide moiety is atom-efficient, easy to install and can be reduced in the presence of many other protecting groups, making it ideal for the synthesis of branched and/or cyclic peptides. α-Azido acids are less bulky than urethane-protected counterparts and react more effectively in coupling reactions of difficult-to-form peptide and ester bonds. Azido acids can also be used to form azoles on complex intermediates. This review covers the synthesis of azido acids and their application to the total synthesis of complex peptide natural products.1 Introduction2 Synthesis of α-Azido Acids2.1 From α-Amino Acids or Esters2.2 Via α-Substitution2.3 Via Electrophilic Azidation2.4 Via Condensation of N-2-Azidoacetyl-4-Phenylthiazolidin- 2-Thi one Enolates with Aldehydes and Acetals2.5 Synthesis of α,β-Unsaturated α-Azido Acids and Esters3 Synthesis of β-Azido Acids3.1 Preparation of Azidoalanine and 3-Azido-2-aminobutanoic Acids3.2 General Approaches to Preparing β-Azido Acids Other Than Azi doalanine and AABA4 Azido Acids in Total Synthesis4.1 α-Azido Acids4.2 β-Azido Acids and Azido Acids Containing an Azide on the Side
Chain5 Conclusions
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6
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Stevens JM, Parra-Rivera AC, Dixon DD, Beutner GL, DelMonte AJ, Frantz DE, Janey JM, Paulson J, Talley MR. Direct Lewis Acid Catalyzed Conversion of Enantioenriched N-Acyloxazolidinones to Chiral Esters, Amides, and Acids. J Org Chem 2018; 83:14245-14261. [DOI: 10.1021/acs.joc.8b02451] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Jason M. Stevens
- Chemical and Synthetic Development, Bristol-Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08901, United States
| | - Ana Cristina Parra-Rivera
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, Texas 78249, United States
| | - Darryl D. Dixon
- Chemical and Synthetic Development, Bristol-Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08901, United States
| | - Gregory L. Beutner
- Chemical and Synthetic Development, Bristol-Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08901, United States
| | - Albert J. DelMonte
- Chemical and Synthetic Development, Bristol-Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08901, United States
| | - Doug E. Frantz
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, Texas 78249, United States
| | - Jacob M. Janey
- Chemical and Synthetic Development, Bristol-Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08901, United States
| | - James Paulson
- Chemical and Synthetic Development, Bristol-Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08901, United States
| | - Michael R. Talley
- Chemical and Synthetic Development, Bristol-Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08901, United States
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7
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Guissart C, Barros A, Rosa Barata L, Evano G. Broadly Applicable Ytterbium-Catalyzed Esterification, Hydrolysis, and Amidation of Imides. Org Lett 2018; 20:5098-5102. [DOI: 10.1021/acs.orglett.8b01896] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Céline Guissart
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Andre Barros
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Luis Rosa Barata
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Gwilherm Evano
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
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8
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Turkyilmaz S, Wilcox CS. Asymmetric solution-phase mixture aldol reaction using oligomeric ethylene glycol tagged chiral oxazolidinones. Tetrahedron Lett 2017; 58:2031-2033. [PMID: 29056780 PMCID: PMC5646709 DOI: 10.1016/j.tetlet.2017.04.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sorting tags are oligomeric structures that can be used as protecting groups or chiral auxiliaries enabling solution-phase mixture syntheses of multiple tagged compounds in one pot and allowing for facile and predictable chromatographic separation of products at the end of synthetic sequences. Perfluorinated hydrocarbon and oligomeric ethylene glycol (OEG) derivatives are known classes of sorting tags. Herein we describe the preparation of OEGylated chiral oxazolidinones and their use in asymmetric solution-phase mixture aldol reactions. Through the use of such oxazolidinones based on tyrosine four different individually tagged aldol adducts were obtained as a mixture, chromatographically demixed, detagged, and it was shown that these processes gave the desired aldol products in good yield and enantioselectivity.
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Affiliation(s)
- Serhan Turkyilmaz
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Istanbul University, 34116 Beyazit, Istanbul, Turkey
| | - Craig S. Wilcox
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
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9
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Ejima H, Wakita F, Imamura R, Kato T, Hosokawa S. Stereoselective Synthesis of Tabtoxinine-β-lactam by Using the Vinylogous Mukaiyama Aldol Reaction with Acetate-Type Vinylketene Silyl N,O-Acetal and α-Keto-β-lactam. Org Lett 2017; 19:2530-2532. [DOI: 10.1021/acs.orglett.7b00814] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hirotaka Ejima
- Department of Applied Chemistry,
Faculty of Science and Engineering, Waseda University 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Fumihiro Wakita
- Department of Applied Chemistry,
Faculty of Science and Engineering, Waseda University 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Ryo Imamura
- Department of Applied Chemistry,
Faculty of Science and Engineering, Waseda University 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Takuya Kato
- Department of Applied Chemistry,
Faculty of Science and Engineering, Waseda University 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Seijiro Hosokawa
- Department of Applied Chemistry,
Faculty of Science and Engineering, Waseda University 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
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10
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Saikia I, Borah AJ, Phukan P. Use of Bromine and Bromo-Organic Compounds in Organic Synthesis. Chem Rev 2016; 116:6837-7042. [PMID: 27199233 DOI: 10.1021/acs.chemrev.5b00400] [Citation(s) in RCA: 287] [Impact Index Per Article: 35.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Bromination is one of the most important transformations in organic synthesis and can be carried out using bromine and many other bromo compounds. Use of molecular bromine in organic synthesis is well-known. However, due to the hazardous nature of bromine, enormous growth has been witnessed in the past several decades for the development of solid bromine carriers. This review outlines the use of bromine and different bromo-organic compounds in organic synthesis. The applications of bromine, a total of 107 bromo-organic compounds, 11 other brominating agents, and a few natural bromine sources were incorporated. The scope of these reagents for various organic transformations such as bromination, cohalogenation, oxidation, cyclization, ring-opening reactions, substitution, rearrangement, hydrolysis, catalysis, etc. has been described briefly to highlight important aspects of the bromo-organic compounds in organic synthesis.
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Affiliation(s)
| | - Arun Jyoti Borah
- Department of Chemistry, Gauahti University , Guwahati-781014, Assam, India
| | - Prodeep Phukan
- Department of Chemistry, Gauahti University , Guwahati-781014, Assam, India
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11
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Chung WJ, Vanderwal CD. Stereoselective Halogenation in Natural Product Synthesis. Angew Chem Int Ed Engl 2016; 55:4396-434. [PMID: 26833878 PMCID: PMC6028003 DOI: 10.1002/anie.201506388] [Citation(s) in RCA: 197] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 08/27/2015] [Indexed: 01/23/2023]
Abstract
At last count, nearly 5000 halogenated natural products have been discovered. In approximately half of these compounds, the carbon atom to which the halogen is bound is sp(3) -hybridized; therefore, there are an enormous number of natural products for which stereocontrolled halogenation must be a critical component of any synthesis strategy. In this Review, we critically discuss the methods and strategies used for stereoselective introduction of halogen atoms in the context of natural product synthesis. Using the successes of the past, we also attempt to identify gaps in our synthesis technology that would aid the synthesis of halogenated natural products, as well as existing methods that have not yet seen application in complex molecule synthesis. The chemistry described herein demonstrates yet again how natural products continue to provide the inspiration for critical advances in chemical synthesis.
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Affiliation(s)
- Won-jin Chung
- Department of Chemistry, Gwangju Institute of Science and Technology, Gwangju, South Korea.
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12
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Chung WJ, Vanderwal CD. Stereoselektive Halogenierungen in der Naturstoffsynthese. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201506388] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Won-jin Chung
- Department of Chemistry; Gwangju Institute of Science and Technology; Gwangju Südkorea
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13
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Marchiori MF, Pires Souto DE, Oliveira Bortot L, Francisco Pereira J, Kubota LT, Cummings RD, Dias-Baruffi M, Carvalho I, Campo VL. Synthetic 1,2,3-triazole-linked glycoconjugates bind with high affinity to human galectin-3. Bioorg Med Chem 2015; 23:3414-25. [DOI: 10.1016/j.bmc.2015.04.044] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Revised: 04/02/2015] [Accepted: 04/13/2015] [Indexed: 11/29/2022]
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14
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Chen CY, Liao YF, Chang MY, Hu MK. Difluorophenylglycinols as new modulators of proteolytic processing of amyloid precursor proteins. Arch Pharm (Weinheim) 2013; 347:161-73. [PMID: 24339192 DOI: 10.1002/ardp.201300283] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2013] [Revised: 09/07/2013] [Accepted: 09/17/2013] [Indexed: 11/06/2022]
Abstract
Synthesis and evaluation of difluorophenylglycinols as new modulators of proteolytic processing of the amyloid-β precursor proteins for Alzheimer's therapies were described. A range of N-substituted (R)- and (S)-difluorophenylglycinols, structured on the amino alcohol framework, were explored by incorporating the arylsulfonyl moieties and various N-substituents. Evans' chiral auxiliary strategy was employed for the asymmetric synthesis of these enantiomeric difluorophenylglycinols. Compounds with effects on the γ-secretase inhibition and ERK-mediated signaling pathways were evaluated on cell-based assays. Among them, N-cyclopropylmethyl derivatives R-12c and R-13c showed modest γ-secretase inhibition as well as ERK-dependent activation.
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Affiliation(s)
- Chia-Yu Chen
- School of Pharmacy, National Defense Medical Center, Taipei, Taiwan
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15
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Yu TY, Wang Y, Xu PF. An Unusual Triphenylphosphine Oxide Catalyzed Stereoselective 1,3-Dichlorination of Unsaturated Ketoesters. Chemistry 2013; 20:98-101. [DOI: 10.1002/chem.201303688] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Indexed: 01/02/2023]
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16
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Erdbrink H, Nyakatura EK, Huhmann S, Gerling UIM, Lentz D, Koksch B, Czekelius C. Synthesis of enantiomerically pure (2S,3S)-5,5,5-trifluoroisoleucine and (2R,3S)-5,5,5-trifluoro-allo-isoleucine. Beilstein J Org Chem 2013; 9:2009-2014. [PMID: 24204411 PMCID: PMC3817528 DOI: 10.3762/bjoc.9.236] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Accepted: 09/11/2013] [Indexed: 12/26/2022] Open
Abstract
A practical route for the stereoselective synthesis of (2S,3S)-5,5,5-trifluoroisoleucine (L-5-F3Ile) and (2R,3S)-5,5,5-trifluoro-allo-isoleucine (D-5-F3-allo-Ile) was developed. The hydrophobicity of L-5-F3Ile was examined and it was incorporated into a model peptide via solid phase peptide synthesis to determine its α-helix propensity. The α-helix propensity of 5-F3Ile is significantly lower than Ile, but surprisingly high when compared with 4’-F3Ile.
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Affiliation(s)
- Holger Erdbrink
- Department of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Elisabeth K Nyakatura
- Department of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Susanne Huhmann
- Department of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Ulla I M Gerling
- Department of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Dieter Lentz
- Department of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Beate Koksch
- Department of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Constantin Czekelius
- Department of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
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17
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Alabanza LM, Dong Y, Wang P, Wright JA, Zhang Y, Briggs AJ. A Practical Synthesis of an Aminopyridine as a Component of a BTK Inhibitor. Org Process Res Dev 2013. [DOI: 10.1021/op400046y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lady Mae Alabanza
- Process Research and Synthesis, Hoffmann-La Roche, Inc., 340 Kingsland Street, Nutley, New Jersey
07110, United States
| | - Yan Dong
- Process Research and Synthesis, Hoffmann-La Roche, Inc., 340 Kingsland Street, Nutley, New Jersey
07110, United States
| | - Ping Wang
- Process Research and Synthesis, Hoffmann-La Roche, Inc., 340 Kingsland Street, Nutley, New Jersey
07110, United States
| | - James A. Wright
- Process Research and Synthesis, Hoffmann-La Roche, Inc., 340 Kingsland Street, Nutley, New Jersey
07110, United States
| | - Yingchao Zhang
- Process Research and Synthesis, Hoffmann-La Roche, Inc., 340 Kingsland Street, Nutley, New Jersey
07110, United States
| | - Andrew J. Briggs
- Process Research and Synthesis, Hoffmann-La Roche, Inc., 340 Kingsland Street, Nutley, New Jersey
07110, United States
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18
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Carbon–carbon bond-forming reactions of α-carbonyl carbocations: exploration of a reversed-polarity equivalent of enolate chemistry. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.07.065] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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19
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Thorn K, Nielsen CU, Jakobsen P, Steffansen B, Zercher CK, Begtrup M. The tandem chain extension aldol reaction used for synthesis of ketomethylene tripeptidomimetics targeting hPEPT1. Bioorg Med Chem Lett 2011; 21:4597-601. [PMID: 21703856 PMCID: PMC3237634 DOI: 10.1016/j.bmcl.2011.05.108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2011] [Revised: 05/26/2011] [Accepted: 05/26/2011] [Indexed: 11/16/2022]
Abstract
The rationale for targeting the human di-/tripeptide transporter hPEPT1 for oral drug delivery has been well established by several drug and prodrug cases. The aim of this study was to synthesize novel ketomethylene modified tripeptidomimetics and to investigate their binding affinity for hPEPT1. Three related tripeptidomimetics of the structure H-Phe-ψ[COCH(2)]-Ser(Bz)-X(aa)-OH were synthesized applying the tandem chain extension aldol reaction, where amino acid derived β-keto imides were stereoselectively converted to α-substituted γ-keto imides. In addition, three corresponding tripeptides, composed of amide bonds, were synthesized for comparison of binding affinities. The six investigated compounds were all defined as high affinity ligands (K(i)-values <0.5 mM) for hPEPT1 by measuring the concentration dependent inhibition of apical [(14)C]Gly-Sar uptake in Caco-2 cells. Consequently, the ketomethylene replacement for the natural amide bond and α-side chain modifications appears to offer a promising strategy to modify tripeptidic structures while maintaining a high affinity for hPEPT1.
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Affiliation(s)
- Karina Thorn
- Protein Chemistry, Biogen Idec Hemophilia, Waltham, MA 02451, USA.
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20
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Hamashima Y, Nagi T, Shimizu R, Tsuchimoto T, Sodeoka M. Catalytic Asymmetric α-Chlorination of 3-Acyloxazolidin-2-one with a Trinary Catalytic System. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100453] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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21
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Denton RM, Tang X, Przeslak A. Catalysis of phosphorus(V)-mediated transformations: dichlorination reactions of epoxides under Appel conditions. Org Lett 2011; 12:4678-81. [PMID: 20845932 DOI: 10.1021/ol102010h] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A stereospecific triphenylphosphine oxide-catalyzed 1,2-dichlorination reaction of epoxides has been developed. The reaction is effective for a range of terminal and internal epoxides. In contrast to the classical Appel-type dichlorination of epoxides, oxalyl chloride is used as a stoichiometric reagent to generate the chlorophosphonium salt responsible for dichlorination from catalytic triphenylphosphine oxide.
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Affiliation(s)
- Ross M Denton
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom.
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22
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Legters J, Willems JGH, Thijs L, Zwanenburg B. Synthesis of functionalized amino acids by ring-opening reactions of aliphatically substituted aziridine-2-carboxylic esters. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/recl.19921110201] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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23
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24
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Krief A, Kremer A. Synthesis of Alkali Metal Carboxylates and Carboxylic Acids Using “Wet” and “Anhydrous” Alkali Metal Hydroxides. Chem Rev 2010; 110:4772-819. [DOI: 10.1021/cr9003506] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alain Krief
- Facultes Universitaires Notre-Dame de la Paix, Departement de Chimie, 61 rue de Bruxelles, Namur B-5000, Belgium
| | - Adrian Kremer
- Facultes Universitaires Notre-Dame de la Paix, Departement de Chimie, 61 rue de Bruxelles, Namur B-5000, Belgium
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25
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Paull DH, Weatherwax A, Lectka T. Catalytic, asymmetric reactions of ketenes and ketene enolates. Tetrahedron 2009; 65:3771-6803. [PMID: 21494417 DOI: 10.1016/j.tet.2009.05.079] [Citation(s) in RCA: 163] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Daniel H Paull
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA
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Jiang Z, Yang Y, Pan Y, Zhao Y, Liu H, Tan CH. Synthesis of alpha-stereogenic amides and ketones by enantioselective conjugate addition of 1,4-dicarbonyl but-2-enes. Chemistry 2009; 15:4925-30. [PMID: 19301341 DOI: 10.1002/chem.200802601] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
In the conjugate addition reaction of a alpha,beta-unsaturated compound, the new stereogenic center is created in the beta-position. In contrast, conjugate addition to 1,4-dicarbonyl but-2-enes will generate an alpha-stereogenic center with respect to one of the carbonyl groups, which informally, can be considered as an inversion of normal reactivity patterns or Umpolung. In this paper, we demonstrate that chiral bicyclic guanidine can catalyze the addition of 1,3-dicarbonyl compounds to 1,4-dicarbonyl but-2-enes [(E)-4-oxo-4-arylbutenamides and (E)-4-oxo-4-arylbutenones] with high regioselectivity and enantioselectivity (ee values up to 97%).
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Affiliation(s)
- Zhiyong Jiang
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore
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27
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Dogo-Isonagie C, Bekele T, France S, Wolfer J, Weatherwax A, Taggi AE, Paull DH, Dudding T, Lectka T. A Mechanistic Study on the Catalytic, Asymmetric α-Bromination of Acid Chlorides. European J Org Chem 2007. [DOI: 10.1002/ejoc.200600819] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lee HT, Hicks JL, Johnson DR. Chiral synthesis of L-[14C]phenylalanine and its incorporation into the renin inhibitor PD 132002. J Labelled Comp Radiopharm 2006. [DOI: 10.1002/jlcr.2580290912] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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29
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Bull SD, Davies SG, Garner AC, Kruchinin D, Key MS, Roberts PM, Savory ED, Smith AD, Thomson JE. SuperQuat 5,5-dimethyl-4-iso-propyloxazolidin-2-one as a mimic of Evans 4-tert-butyloxazolidin-2-one. Org Biomol Chem 2006; 4:2945-64. [PMID: 16855744 DOI: 10.1039/b605244d] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The incorporation of a gem-dimethyl group at the 5-position of a chiral oxazolidinone biases the conformation of the adjacent C(4)-stereodirecting group such that the gem-dimethyl-4-iso-propyl combination mimics a C(4)-tert-butyl group, providing higher levels of stereocontrol than a simple 4-iso-propyloxazolidinone. The generality of this principle is demonstrated with applications in stereoselective enolate alkylations, kinetic resolutions, Diels-Alder cycloadditions and Pd-catalysed asymmetric acetalisation reactions.
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Affiliation(s)
- Steven D Bull
- The Department of Organic Chemistry, University of Oxford, Chemistry Research Laboratory, UK.
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Lorente SO, Jimenez CJ, Gros L, Yardley V, de Luca-Fradley K, Croft SL, A Urbina J, Ruiz-Perez LM, Pacanowska DG, Gilbert IH. Preparation of transition-state analogues of sterol 24-methyl transferase as potential anti-parasitics. Bioorg Med Chem 2005; 13:5435-53. [PMID: 16046134 DOI: 10.1016/j.bmc.2005.06.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2004] [Accepted: 05/24/2005] [Indexed: 11/24/2022]
Abstract
There is an urgent need for new drugs to treat leishmaniasis and Chagas disease. One important drug target in these organisms is sterol biosynthesis. In these organisms the main endogenous sterols are ergosta- and stigmata-like compounds in contrast to the situation in mammals, which have cholesterol as the sole sterol. In this paper we discuss the design, synthesis and evaluation of potential transition state analogues of the enzyme Delta24(25)-methyltransferase (24-SMT). This enzyme is essential for the biosynthesis of ergosterol, but not required for the biosynthesis of cholesterol. A series of compounds were successfully synthesised in which mimics of the S-adenosyl methionine co-factor were attached to the sterol nucleus. Compounds were evaluated against recombinant Leishmania major 24-SMT and the parasites L. donovani and Trypanosoma cruzi in vitro, causative organisms of leishmaniasis and Chagas disease, respectively. Some of the compounds showed inhibition of the recombinant Leishmania major 24-SMT and induced growth inhibition of the parasites. Some compounds also showed anti-parasitic activity against L. donovani and T. cruzi, but no inhibition of the enzyme. In addition, some of the compounds had anti-proliferative activity against the bloodstream forms of Trypanosoma brucei rhodesiense, which causes African trypanosomiasis.
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Affiliation(s)
- Silvia Orenes Lorente
- Welsh School of Pharmacy, Cardiff University, Redwood Building, King Edward VII Avenue, Cardiff, CF10 3XF, UK
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Oestreich M. Strategies for Catalytic Asymmetric Electrophilic ? Halogenation of Carbonyl Compounds. Angew Chem Int Ed Engl 2005; 44:2324-7. [PMID: 15827954 DOI: 10.1002/anie.200500478] [Citation(s) in RCA: 127] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Martin Oestreich
- Institut für Organische Chemie und Biochemie, Albert-Ludwigs-Universität, Freiburg, Germany.
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Oestreich M. Strategien zur katalytischen asymmetrischen elektrophilen ?-Halogenierung von Carbonylverbindungen. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200500478] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Treweeke NR, Hitchcock PB, Pardoe DA, Caddick S. Controlling diastereoselectivity in the reactions of enantiomerically pure α-bromoacyl-imidazolidinones with nitrogen nucleophiles: substitution reactions with retention or inversion of configuration. Chem Commun (Camb) 2005:1868-70. [PMID: 15795770 DOI: 10.1039/b417954d] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Diastereoselective substitution reactions of [small alpha]-bromoacyl-imidazolidinones with nitrogen nucleophiles can be promoted with either retention or inversion of configuration by carrying out reactions under epimerising or non-epimerising conditions.
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Affiliation(s)
- N R Treweeke
- Department of Chemistry, University College London, 20 Gordon Street, London, UK
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A simple method removing 2-oxazolidinone and 2-hydroxyethylamine auxiliaries in methoxide–carbonate systems for synthesis of planar-chiral nicotinate. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)00698-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Sibi MP, Hasegawa H, Ghorpade SR. A convenient method for the conversion of N-acyloxazolidinones to hydroxamic acids. Org Lett 2002; 4:3343-6. [PMID: 12323014 DOI: 10.1021/ol0263301] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Treatment of N-acyloxazolidinones with hydroxylamines using samarium triflate as a Lewis acid provides the corresponding hydroxamic acids in 50-98% yields at room temperature. The conversion proceeds with high degree of chemoselectivity and without racemization of chiral centers alpha- to the acyl group. [reaction: see text]
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Affiliation(s)
- Mukund P Sibi
- Department of Chemistry, North Dakota State University, Fargo, ND 58015, USA.
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Synthesis and utility of the 3,3-dimethyl-5-substituted-2-pyrrolidinone ‘Quat’ chiral auxiliary. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s0957-4166(02)00166-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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38
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Arndt HD, Vescovi A, Schrey A, Pfeifer JR, Koert U. Solution phase synthesis and purification of the minigramicidin ion channels and a succinyl-linked gramicidin. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(02)00179-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Karlsson S, Han F, Högberg HE, Caldirola P. trans-3,4-Disubstituted pyrrolidines by 1,3-dipolar cycloaddition: enantioselective approaches and their limitations. ACTA ACUST UNITED AC 1999. [DOI: 10.1016/s0957-4166(99)00244-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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40
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Bigi F, Bocelli G, Maggi R, Sartori G. Stereoselective Synthesis of Optically Active 2-Hydroxymandelic Acids and Esters via Friedel−Crafts Coordinated Reaction: Crystal Structure of Chiral Dichloro[2-(1-oxido-1-menthoxy- carbonylmethyl)-4-methoxyphenoxido-O,O,O]titanium. J Org Chem 1999; 64:5004-5009. [DOI: 10.1021/jo982170o] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Franca Bigi
- Dipartimento di Chimica Organica e Industriale dell'Università, Parco Area delle Scienze 17A, I-43100 Parma, Italy, and Centro di Studio per la Strutturistica Diffrattometrica del C.N.R., Parco Area delle Scienze 17A, I-43100 Parma, Italy
| | - Gabriele Bocelli
- Dipartimento di Chimica Organica e Industriale dell'Università, Parco Area delle Scienze 17A, I-43100 Parma, Italy, and Centro di Studio per la Strutturistica Diffrattometrica del C.N.R., Parco Area delle Scienze 17A, I-43100 Parma, Italy
| | - Raimondo Maggi
- Dipartimento di Chimica Organica e Industriale dell'Università, Parco Area delle Scienze 17A, I-43100 Parma, Italy, and Centro di Studio per la Strutturistica Diffrattometrica del C.N.R., Parco Area delle Scienze 17A, I-43100 Parma, Italy
| | - Giovanni Sartori
- Dipartimento di Chimica Organica e Industriale dell'Università, Parco Area delle Scienze 17A, I-43100 Parma, Italy, and Centro di Studio per la Strutturistica Diffrattometrica del C.N.R., Parco Area delle Scienze 17A, I-43100 Parma, Italy
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Patel RN, Banerjee A, Hanson RL, Brzozowski DB, Parker LW, Szarka LJ. Oxidation of Nα-protected-l-lysine by Rhodotorula graminis to produce novel chiral compounds. ACTA ACUST UNITED AC 1999. [DOI: 10.1016/s0957-4166(98)00495-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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42
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Iwanowicz EJ, Malley MF, Smith K. A General Approach for the Enantioselective Synthesis ofanti-β-Hydroxy-α-Amino Acids: Preparation of an Oxazolidine-Functionalized Chiral Glycine Equivalent. SYNTHETIC COMMUN 1998. [DOI: 10.1080/00397919808004918] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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43
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Fukuzawa SI, Hongo Y. Transesterification of N-acyloxazolidinones with alcohol by lanthanum(III) Iodide. Tetrahedron Lett 1998. [DOI: 10.1016/s0040-4039(98)00521-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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44
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Allin SM, Bulman Page PC. THE DEVELOPMENT AND APPLICATION OF 1,3-DITHIANE 1-OXIDE DERIVATIVES AS CHIRAL AUXILIARIES AND ASYMMETRIC BUILDING BLOCKS FOR ORGANIC SYNTHESIS. A REVIEW. ORG PREP PROCED INT 1998. [DOI: 10.1080/00304949809355275] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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45
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Péter A, Tóth G. Chromatographic methods for the separation of enantiomers and epimers of β-alkyl amino acids and peptides containing them. Anal Chim Acta 1997. [DOI: 10.1016/s0003-2670(97)00224-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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46
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Kelly NM, Sutherland A, Willis CL. Syntheses of amino acids incorporating stable isotopes. Nat Prod Rep 1997. [DOI: 10.1039/np9971400205] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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47
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Matsunaga H, Ishizuka T, Kunieda T. Chiral electrophilic “glycinal” equivalents. New synthons for optically active α-amino acids and 4-substituted 2-oxazolidinones. Tetrahedron 1997. [DOI: 10.1016/s0040-4020(96)01077-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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48
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Patel RN. Stereoselective biotransformations in synthesis of some pharmaceutical intermediates. ADVANCES IN APPLIED MICROBIOLOGY 1997; 43:91-140. [PMID: 9097413 DOI: 10.1016/s0065-2164(08)70224-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- R N Patel
- Department of Microbial Technology, Bristol-Myers Squibb Pharmaceutical Research Institute, New Brunswick, New Jersey 08903, USA
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49
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Tang JS, Verkade JG. Chiral Auxiliary-Bearing Isocyanides as Synthons: Synthesis of Strongly Fluorescent (+)-5-(3,4-Dimethoxyphenyl)-4-[[N- [(4S)-2-oxo-4-(phenylmethyl)-2-oxazolidinyl]]carbonyl]oxazole and Its Enantiomer. J Org Chem 1996; 61:8750-8754. [PMID: 11667848 DOI: 10.1021/jo961554g] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Both (4S-(+)-3-(isocyanoacetyl)-4-(phenylmethyl)-2-oxazolidinone (R)-1 and its enantiomer (S)-1 have been synthesized as potentially useful synthons in asymmetric synthesis. Optically active (+)-5-(3,4-dimethoxyphenyl)-4-[[N-[(4S)-2-oxo-4-(phenylmethyl)-2-oxazolidinyl]]carbonyl] oxazole (S)-2 and its enantiomer (R)-2 obtained by treating 3,4-dimethoxybenzoyl chloride with (S)-1 and (R)-1, respectively, in the presence of the nonionic superbase P(MeNCH(2)CH(2))(3)N, have high fluorescence quantum yields. The molecular structure of (S)-2 obtained by X-ray means is also presented.
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Affiliation(s)
- Jian S. Tang
- Department of Chemistry, Gilman Hall, Iowa State University, Ames, Iowa 50011
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