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Neis N, Xie F, Krug D, Zhao H, Siebert A, Binz T, Fu C, Müller R, Kazmaier U. Stereoselective Syntheses of Deuterated Pipecolic Acids as Tools to Investigate the Stereoselectivity of the Hydroxylase GetF. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200162] [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]
Affiliation(s)
- Nadine Neis
- Saarland University: Universitat des Saarlandes Organic Chemistry GERMANY
| | - Feng Xie
- Helmholtz Centre for Infection Research: Helmholtz-Zentrum fur Infektionsforschung GmbH Microbial Natural Products GERMANY
| | - Daniel Krug
- Helmholtz Centre for Infection Research: Helmholtz-Zentrum fur Infektionsforschung GmbH Microbial Natural Products GERMANY
| | - Haowen Zhao
- Helmholtz Centre for Infection Research: Helmholtz-Zentrum fur Infektionsforschung GmbH Microbial Natural Products GERMANY
| | - Andreas Siebert
- Saarland University: Universitat des Saarlandes Organic Chemistry GERMANY
| | - Tina Binz
- Helmholtz-Zentrum für Infektionsforschung GmbH: Helmholtz-Zentrum fur Infektionsforschung GmbH Microbial Natural Products GERMANY
| | - Chengzhang Fu
- Helmholtz-Zentrum für Infektionsforschung GmbH: Helmholtz-Zentrum fur Infektionsforschung GmbH Microbial Natural Products GERMANY
| | - Rolf Müller
- Helmholtz-Zentrum für Infektionsforschung GmbH: Helmholtz-Zentrum fur Infektionsforschung GmbH Microbial Natural Products GERMANY
| | - Uli Kazmaier
- Saarland University Organic Chemistry Campus, Bldg. C4.2 66123 Saarbrücken GERMANY
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Jeon H, Chung Y, Kim S. Proline Ester Enolate Claisen Rearrangement and Formal Total Synthesis of (-)-Cephalotaxine. J Org Chem 2019; 84:8080-8089. [PMID: 31190529 DOI: 10.1021/acs.joc.9b00933] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A concise formal total synthesis of (-)-cephalotaxine was achieved via an ester enolate Claisen rearrangement (EECR). A series of EECRs of proline allyl esters were examined to obtain the desired relative stereochemistry of an azaspiranic tetracyclic backbone. An unexpected reversal or low diastereoselectivity of ( Z)-cinnamyl ester was observed. The diastereoselectivity was controlled by substitution patterns of a styrene region. This result represents a useful guide in aiding the prediction of stereochemical outcome of EECR of α-amino allylic esters.
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Affiliation(s)
- Hongjun Jeon
- College of Pharmacy , Seoul National University , 1 Gwanak-ro , Gwanak-gu, Seoul 08826 , Republic of Korea
| | - Yundong Chung
- College of Pharmacy , Seoul National University , 1 Gwanak-ro , Gwanak-gu, Seoul 08826 , Republic of Korea
| | - Sanghee Kim
- College of Pharmacy , Seoul National University , 1 Gwanak-ro , Gwanak-gu, Seoul 08826 , Republic of Korea
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Servatius P, Kazmaier U. Total synthesis of the natural HDAC inhibitor Cyl-1. Org Biomol Chem 2018; 16:3464-3472. [DOI: 10.1039/c8ob00391b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A chelate enolate Claisen rearrangement was used as a key step in the first total synthesis of Cyl-1, a cyclic tetrapeptide from Cylindrocladium scoparium.
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Affiliation(s)
- Phil Servatius
- Institute of Organic Chemistry
- Saarland University
- 66041 Saarbrücken
- Germany
| | - Uli Kazmaier
- Institute of Organic Chemistry
- Saarland University
- 66041 Saarbrücken
- Germany
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4
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Becker D, Kazmaier U. Synthesis and Biological Evaluation of Dichlorinated Chondramide Derivatives. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500369] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Chaudhuri R, Kazmaier U. Synthesis of 2,3-Disubstituted Pyrroles Initiated by 1,4-Addition of Chelated Enolates onto Alkynyl Carbene Complexes. Organometallics 2013. [DOI: 10.1021/om4008136] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Rupsha Chaudhuri
- Institute
of Organic Chemistry, Saarland University,
Campus, Building C4.2, D-66123 Saarbruecken, Germany
| | - Uli Kazmaier
- Institute
of Organic Chemistry, Saarland University,
Campus, Building C4.2, D-66123 Saarbruecken, Germany
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6
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Barbie P, Huo L, Müller R, Kazmaier U. Stereoselective Synthesis of Deuterium-Labeled (2S)-Cyclohexenyl Alanines, Biosynthetic Intermediates of Cinnabaramide. Org Lett 2012; 14:6064-7. [DOI: 10.1021/ol3029548] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Philipp Barbie
- Saarland University, Institute of Organic Chemistry, Campus, Bldg. C4.2, and Helmholtz Institute for Pharmaceutical Research Saarland, Helmholtz Centre for Infection Research and Department of Pharmaceutical Biotechnology, D-66123 Saarbruecken, Germany
| | - Liujie Huo
- Saarland University, Institute of Organic Chemistry, Campus, Bldg. C4.2, and Helmholtz Institute for Pharmaceutical Research Saarland, Helmholtz Centre for Infection Research and Department of Pharmaceutical Biotechnology, D-66123 Saarbruecken, Germany
| | - Rolf Müller
- Saarland University, Institute of Organic Chemistry, Campus, Bldg. C4.2, and Helmholtz Institute for Pharmaceutical Research Saarland, Helmholtz Centre for Infection Research and Department of Pharmaceutical Biotechnology, D-66123 Saarbruecken, Germany
| | - Uli Kazmaier
- Saarland University, Institute of Organic Chemistry, Campus, Bldg. C4.2, and Helmholtz Institute for Pharmaceutical Research Saarland, Helmholtz Centre for Infection Research and Department of Pharmaceutical Biotechnology, D-66123 Saarbruecken, Germany
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7
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Liu Z, Mehta SJ, Hruby VJ. Strategies for Asymmetric Synthesis of Amino Acids with γ,δ-Unsaturation. ORG PREP PROCED INT 2012. [DOI: 10.1080/00304948.2012.676507] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Zhihua Liu
- a Department of Chemistry and Biochemistry , University of Arizona, Tucson , Arizona , USA
| | - Sukeshi J. Mehta
- a Department of Chemistry and Biochemistry , University of Arizona, Tucson , Arizona , USA
| | - Victor J. Hruby
- a Department of Chemistry and Biochemistry , University of Arizona, Tucson , Arizona , USA
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Mizota I, Tanaka K, Shimizu M. Synthesis of γ,δ-unsaturated quaternary α-alkylamino acids using umpolung reaction and Claisen rearrangement. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.01.133] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Deska J, Hähn S, Kazmaier U. Stereoselective Synthesis of Deuterated β-Cyclohexenylserine, a Biosynthetic Intermediate of the Salinosporamides. Org Lett 2011; 13:3210-3. [DOI: 10.1021/ol201120k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jan Deska
- Universität des Saarlandes, Institut für Organische Chemie, Im Stadtwald, Geb. C4.2, D-66123 Saarbrücken, Germany
| | - Saskia Hähn
- Universität des Saarlandes, Institut für Organische Chemie, Im Stadtwald, Geb. C4.2, D-66123 Saarbrücken, Germany
| | - Uli Kazmaier
- Universität des Saarlandes, Institut für Organische Chemie, Im Stadtwald, Geb. C4.2, D-66123 Saarbrücken, Germany
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Gawas D, Kazmaier U. Diastereotopos-differentiating allylic alkylation as a key step in the synthesis of gamma-glutamyl boletine. Org Biomol Chem 2009; 8:457-62. [PMID: 20066284 DOI: 10.1039/b917589j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A straightforward approach towards gamma-glutamyl boletine is described, based on a diastereotopos-differentiating allylic alkylation of chelated amino acid ester enolates. Independent of the configuration of the leaving group in the allylic substrate, the allylation product is obtained as a single stereoisomer. Its configuration is solely controlled by the stereogenic center adjacent to the pi-allyl complex formed.
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Affiliation(s)
- Dnyaneshwar Gawas
- Institut für Organische Chemie, Universität des Saarlandes, D-66123 Saarbrücken, Germany
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Bukovec C, Kazmaier U. A Straightforward Protocol for One-Pot Allylic Aminations/Stille Couplings. Org Lett 2009; 11:3518-21. [DOI: 10.1021/ol901415p] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christian Bukovec
- Universität des Saarlandes, Institut für Organische Chemie, Im Stadtwald, Geb. C4.2, D-66123 Saarbrücken, Germany
| | - Uli Kazmaier
- Universität des Saarlandes, Institut für Organische Chemie, Im Stadtwald, Geb. C4.2, D-66123 Saarbrücken, Germany
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12
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Gawas D, Kazmaier U. Highly diastereoselective anti-aldol reactions of glycolate titanium enolates. J Org Chem 2009; 74:1788-90. [PMID: 19125691 DOI: 10.1021/jo8025466] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Diastereoselective aldol reactions of enolates of alpha-hydroxy ester with different aldehydes are metal tunable, providing either anti- or syn- products. The highest anti-selectivities were obtained with TiCl(OiPr)(3), while Ti(OiPr)(4) provides the opposite syn-products.
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Affiliation(s)
- Dnyaneshwar Gawas
- Institut für Organische Chemie, Universität des Saarlandes, 66123 Saarbrücken, Germany
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13
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Krämer K, Deska J, Hebach C, Kazmaier U. A straightforward approach towards glycoamino acids and glycopeptidesviaPd-catalysed allylic alkylation. Org Biomol Chem 2009; 7:103-10. [DOI: 10.1039/b813978d] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Tellam JP, Kociok-Köhn G, Carbery DR. An Ireland−Claisen Approach to β-Alkoxy α-Amino Acids. Org Lett 2008; 10:5199-202. [PMID: 18928292 DOI: 10.1021/ol802169j] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- James P. Tellam
- Department of Chemistry, University of Bath, Bath, BA2 7AY, U.K
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Schmidt C, Kazmaier U. Synthesis of highly substituted pyroglutamates via a domino Michael addition–Claisen rearrangement–lactamisation approach. Org Biomol Chem 2008; 6:4643-8. [DOI: 10.1039/b811382c] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Ester-enolate Claisen rearrangement of proline-containing α-acyloxy-α-vinylsilane. Synthesis of pyrrolidine-fused glutamate analogs. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.05.066] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Chai Y, Hong SP, Lindsay HA, McFarland C, McIntosh MC. New aspects of the Ireland and related Claisen rearrangements. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(02)00164-3] [Citation(s) in RCA: 171] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kazmaier U, Zumpe F. Chelated Enolates of Amino Acid Esters − New and Efficient Nucleophiles for Isomerization-Free, Stereoselective Palladium-Catalyzed Allylic Substitutions. European J Org Chem 2001. [DOI: 10.1002/1099-0690(200111)2001:21<4067::aid-ejoc4067>3.0.co;2-4] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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20
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The asymmetric synthesis of unnatural α-amino acids as building blocks for complex molecule synthesis. ACTA ACUST UNITED AC 2001. [DOI: 10.1016/s1047-773x(01)80004-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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22
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Meffre P. Syntheses of optically active 2-amino-4-oxobutyric acid and N,O-protected derivatives. Amino Acids 1999; 16:251-72. [PMID: 10399015 DOI: 10.1007/bf01388171] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Strategies for the synthesis of optically active aspartaldehyde derivatives are reviewed. Most of them are using the chiral pool: allylglycine or naturally occurring homoserine, aspartic acid or methionine and side chain modifications. This will be developed in the first part. Some other original routes are also displayed in the second part. Different aspects of each strategy are discussed: the nature and number of steps, the problem of protecting groups, the price and availability of starting materials. Some synthetic applications of such interesting chiral synthons are shown in the last part.
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Affiliation(s)
- P Meffre
- Ecole Nationale Supérieure de Chimie de Paris, France.
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