1
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Shen MH, Wang YJ, Wang Y, Zhou Y, Gu J, Liu XQ, Guo J, Ouyang M, Deng L, Xu HD. α-Vinyl azide–cysteine click coupling reaction enabled bioorthogonal peptide/protein modification. Org Chem Front 2022. [DOI: 10.1039/d2qo00736c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
α-Alkyl and α-aryl vinyl azides were found to be able to couple with cysteine-derived alkyl thiols chemoselectively under mild conditions, providing the corresponding β-ketosulfides with simultaneous extrusion of N2 and ammonia.
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Affiliation(s)
- Mei-Hua Shen
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu Province, 213164, China
| | - Yu-Jiao Wang
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu Province, 213164, China
| | - Yong Wang
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu Province, 213164, China
| | - Ying Zhou
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu Province, 213164, China
| | - Jie Gu
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu Province, 213164, China
| | - Xiao-Qian Liu
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu Province, 213164, China
| | - Jia Guo
- Institute of Biomedical Engineering and Health Sciences, Changzhou University, Changzhou, Jiangsu Province, 213164, China
| | - Mingxing Ouyang
- Institute of Biomedical Engineering and Health Sciences, Changzhou University, Changzhou, Jiangsu Province, 213164, China
| | - Linhong Deng
- Institute of Biomedical Engineering and Health Sciences, Changzhou University, Changzhou, Jiangsu Province, 213164, China
| | - Hua-Dong Xu
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu Province, 213164, China
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2
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Zhu Y, Liu L, Tan D, Sun W, Ke Q, Yue X, Bai B. S-desulfurization: A different covalent modification mechanism from persulfidation by GSH. Free Radic Biol Med 2021; 167:54-65. [PMID: 33711417 DOI: 10.1016/j.freeradbiomed.2021.02.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 02/22/2021] [Accepted: 02/24/2021] [Indexed: 11/22/2022]
Abstract
Post-translational transformation of cysteine residues to persulfides, known as protein S-sulfhydration or persulfidation, is a beneficial H2S signaling mechanism. In this paper, we found that GSH is bound to active cysteine sites of protein by S-desulfurization, which is a new covalent modification mechanism of protein, thus regulating catalytic activity. Here, we provide direct evidence that GSH modifies the reactive cysteine residues of four enzymes (alliinase/D-LDH/ADH/G6PD) and generates protein-SG or protein-SSG derivatives by S-desulfurization. S-desulfurization, α-carbon nucleophilic substitution or thiol-disulfide exchange occurs and H2S is released as a by-product. S-desulfurization is the opposite of persulfidation in terms of H2S production/consumption and enzyme inhibition/mitigation. Here, we elucidated the GSH mechanisms and H2S mechanisms in the enzyme-metabolite system and the beneficial roles of persulfidation and S-desulfurization. These theoretical findings are now shedding light on understanding GSH and H2S molecular functions and providing new theoretical basis for them in cell signaling pathways.
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Affiliation(s)
- Yanwen Zhu
- College of Food Science, Shenyang Agricultural University, Shenyang, 110866, China
| | - Ling Liu
- College of Food Science, Shenyang Agricultural University, Shenyang, 110866, China
| | - Dehong Tan
- College of Food Science, Shenyang Agricultural University, Shenyang, 110866, China
| | - Weijie Sun
- College of Food Science, Shenyang Agricultural University, Shenyang, 110866, China
| | - Qin Ke
- Affiliated Hospital of Chifeng University, Chifeng, 024005, China
| | - Xiqing Yue
- College of Food Science, Shenyang Agricultural University, Shenyang, 110866, China
| | - Bing Bai
- College of Food Science, Shenyang Agricultural University, Shenyang, 110866, China.
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3
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Schlatzer T, Kriegesmann J, Schröder H, Trobe M, Lembacher-Fadum C, Santner S, Kravchuk AV, Becker CFW, Breinbauer R. Labeling and Natural Post-Translational Modification of Peptides and Proteins via Chemoselective Pd-Catalyzed Prenylation of Cysteine. J Am Chem Soc 2019; 141:14931-14937. [PMID: 31469558 PMCID: PMC6776382 DOI: 10.1021/jacs.9b08279] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Indexed: 02/06/2023]
Abstract
The prenylation of peptides and proteins is an important post-translational modification observed in vivo. We report that the Pd-catalyzed Tsuji-Trost allylation with a Pd/BIPHEPHOS catalyst system allows the allylation of Cys-containing peptides and proteins with complete chemoselectivity and high n/i regioselectivity. In contrast to recently established methods, which use non-native connections, the Pd-catalyzed prenylation produces the natural n-prenylthioether bond. In addition, a variety of biophysical probes such as affinity handles and fluorescent tags can be introduced into Cys-containing peptides and proteins. Furthermore, peptides containing two cysteine residues can be stapled or cyclized using homobifunctional allylic carbonate reagents.
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Affiliation(s)
- Thomas Schlatzer
- Institute
of Organic Chemistry, Graz University of
Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Julia Kriegesmann
- Institute
of Biological Chemistry, Faculty of Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria
| | - Hilmar Schröder
- Institute
of Organic Chemistry, Graz University of
Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Melanie Trobe
- Institute
of Organic Chemistry, Graz University of
Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Christian Lembacher-Fadum
- Institute
of Organic Chemistry, Graz University of
Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Simone Santner
- Institute
of Organic Chemistry, Graz University of
Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Alexander V. Kravchuk
- Institute
of Biological Chemistry, Faculty of Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria
| | - Christian F. W. Becker
- Institute
of Biological Chemistry, Faculty of Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria
| | - Rolf Breinbauer
- Institute
of Organic Chemistry, Graz University of
Technology, Stremayrgasse 9, A-8010 Graz, Austria
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4
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Affiliation(s)
- Seiji SAKAMOTO
- Graduate School of Engineering, Department of Synthetic Chemistry and Biological Chemistry, Kyoto University
| | - Itaru HAMACHI
- Graduate School of Engineering, Department of Synthetic Chemistry and Biological Chemistry, Kyoto University
- ERATO Innovative Molecular Technology for Neuroscience Project, Japan Science and Technology Agency (JST)
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5
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Sinha AK, Equbal D. Thiol−Ene Reaction: Synthetic Aspects and Mechanistic Studies of an Anti-Markovnikov-Selective Hydrothiolation of Olefins. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800639] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Arun K. Sinha
- Medicinal and Process Chemistry Division; C.S.I.R.-Central Drug Research Institute; Council of Scientific and Industrial Research); Lucknow- 226021 (U.P.) India
- Academy of Scientific and Innovative Research (AcSIR); Postal Staff College Area, Sector 19; Kamla Nehru Nagar; Ghaziabad, Uttar Pradesh- 201002
| | - Danish Equbal
- Medicinal and Process Chemistry Division; C.S.I.R.-Central Drug Research Institute; Council of Scientific and Industrial Research); Lucknow- 226021 (U.P.) India
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6
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Ruddraraju KV, Parsons ZD, Lewis CD, Gates KS. Correction to “Allylation and Alkylation of Biologically Relevant Nucleophiles by Diallyl Sulfides”. J Org Chem 2017; 82:2306. [DOI: 10.1021/acs.joc.7b00246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Fitzpatrick J, Kalyvas H, Filipovic MR, Ivanović-Burmazović I, MacDonald JC, Shearer J, Kim E. Transformation of a Mononitrosyl Iron Complex to a [2Fe-2S] Cluster by a Cysteine Analogue. J Am Chem Soc 2014; 136:7229-32. [DOI: 10.1021/ja5024207] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jessica Fitzpatrick
- Department
of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Harris Kalyvas
- Department
of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Milos R. Filipovic
- Department
of Chemistry and Pharmacy, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
| | | | - John C. MacDonald
- Department
of Chemistry and Biochemistry, Worcester Polytechnic Institute, Worcester, Massachusetts 01609-2280, United States
| | - Jason Shearer
- Department
of Chemistry, University of Nevada, Reno, Nevada 89557, United States
| | - Eunsuk Kim
- Department
of Chemistry, Brown University, Providence, Rhode Island 02912, United States
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8
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Subramanian V, Moumé-Pymbock M, Hu T, Crich D. Protecting group-free glycoligation by the desulfurative rearrangement of allylic disulfides as a means of assembly of oligosaccharide mimetics. J Org Chem 2011; 76:3691-709. [PMID: 21428425 PMCID: PMC3094498 DOI: 10.1021/jo102411j] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
2-(2-Pyridyldithio-3-butenyl) glycosides react with carbohydrate-based thiols in a two-step process involving sulfenyl transfer followed by desulfurative 2,3-allylic rearrangement, promoted by either triphenylphosphine or silver nitrate, to give novel saccharide mimetics. In an alternative embodiment of the same chemistry anomeric thiols are coupled with carbohydrates derivatized in the form of 2-(2-pyridyldithio-3-butenyl) ethers. This new method of glycoligation does not require protection of hydroxyl groups and is compatible with the presence of acetamides, azides, trichloroethoxycarbamates, and thioglycosides. Variations on the general theme enable the preparation of mimetics of reducing and nonreducing oligosaccharides as well as of nonglycosidically linked systems.
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Affiliation(s)
| | - Myriame Moumé-Pymbock
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, MI 48202
| | - Tianshun Hu
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, MI 48202
| | - David Crich
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, MI 48202
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
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9
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Zhang D, Devarie-Baez NO, Pan J, Wang H, Xian M. One-pot thioether formation from S-nitrosothiols. Org Lett 2010; 12:5674-6. [PMID: 21080645 DOI: 10.1021/ol102491n] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Protein S-nitrosation is an important post-translational modification. However, the detection of S-nitrosation is still problematic because S-nitrosation products, that is, S-nitrosothiols, are unstable species. Here a new reaction which can selectively convert unstable S-nitrosothiols to stable thioethers in one-pot under very mild conditions is reported. This reaction has the potential to be applied in the detection of protein S-nitrosation.
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Affiliation(s)
- Dehui Zhang
- Department of Chemistry, Washington State University, Pullman, Washington 99164, USA
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10
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Krishnamurthy VR, Wilson JT, Cui W, Song X, Yi L, Cummings RD, Chaikof EL. Chemoselective immobilization of peptides on abiotic and cell surfaces at controlled densities. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:7675-7678. [PMID: 20450194 PMCID: PMC2894806 DOI: 10.1021/la101192v] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We report herein a new and enabling approach for decorating both abiotic and cell surfaces with the extracellular matrix IKVAV peptide in a site-specific manner using strain promoted azide-alkyne cycloaddition. A cyclooctyne-derivatized IKVAV peptide was synthesized and immobilized on the surface of pancreatic islets through strain-promoted azide-alkyne cycloaddition with cell surface azides generated by the electrostatic adsorption of a cytocompatible poly(L-lysine)-graft-poly(ethylene glycol) (PLL-g-PEG) copolymer bearing azido groups (PP-N(3)). Both "one-pot" and sequential addition of PP-N(3) and a cyclooctyne-derivatized IKVAV peptide conjugate enabled efficient modification of the pancreatic islet surface in less than 60 min. The ability to bind peptides at controlled surface densities was demonstrated in a quantitative manner using microarrays. Additionally, the technique is remarkably rapid and highly efficient, opening new avenues for the molecular engineering of cellular interfaces and protein and peptide microarrays.
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Affiliation(s)
| | - John T. Wilson
- Departments of Biomedical Engineering and Surgery, Emory University, Atlanta, GA-30322, USA
- Department of Biomedical Engineering, Emory University/Georgia Institute of Technology, Atlanta, GA-30322, USA
| | - Wanxing Cui
- Departments of Biomedical Engineering and Surgery, Emory University, Atlanta, GA-30322, USA
| | - XueZheng Song
- Department of Biochemistry, Emory University, Atlanta, GA-30322, USA
| | - Lasanajak Yi
- Department of Biochemistry, Emory University, Atlanta, GA-30322, USA
| | | | - Elliot L. Chaikof
- Departments of Biomedical Engineering and Surgery, Emory University, Atlanta, GA-30322, USA
- Department of Biomedical Engineering, Emory University/Georgia Institute of Technology, Atlanta, GA-30322, USA
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11
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Crich D, Subramanian V, Karatholuvhu M. Silver-mediated allylic disulfide rearrangement for conjugation of thiols in protic media. J Org Chem 2010; 74:9422-7. [PMID: 19911776 DOI: 10.1021/jo902012m] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Alkyl and aryl allyl disulfides are induced to undergo the desulfurative allylic rearrangement by silver nitrate in protic solvents at room temperature, thereby removing the necessity for the use of phosphines as thiophilic reagents. The silver-mediated reaction functions at ambient temperature in protic solvents and in the absence of protecting groups.
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Affiliation(s)
- David Crich
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France.
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12
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Braverman S, Cherkinsky M, Meridor D, Sprecher M. Synthesis and reactivity of dipropargylic disulfides: tandem rearrangements, cyclization, and oxidative dimerization. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.01.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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13
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14
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Affiliation(s)
- Charles E Hoyle
- School of Polymers and High Performance Materials, University of Southern Mississippi, Hattiesburg, MS 39406-0001, USA
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15
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16
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Chalker JM, Bernardes GJL, Lin YA, Davis BG. Chemical modification of proteins at cysteine: opportunities in chemistry and biology. Chem Asian J 2009; 4:630-40. [PMID: 19235822 DOI: 10.1002/asia.200800427] [Citation(s) in RCA: 469] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Chemical modification of proteins is a rapidly expanding area in chemical biology. Selective installation of biochemical probes has led to a better understanding of natural protein modification and macromolecular function. In other cases such chemical alterations have changed the protein function entirely. Additionally, tethering therapeutic cargo to proteins has proven invaluable in campaigns against disease. For controlled, selective access to such modified proteins, a unique chemical handle is required. Cysteine, with its unique reactivity, has long been used for such modifications. Cysteine has enjoyed widespread use in selective protein modification, yet new applications and even new reactions continue to emerge. This Focus Review highlights the enduring utility of cysteine in protein modification with special focus on recent innovations in chemistry and biology associated with such modifications.
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Affiliation(s)
- Justin M Chalker
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, UK
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17
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Lin YA, Chalker JM, Davis BG. Olefin Metathesis for Site-Selective Protein Modification. Chembiochem 2009; 10:959-69. [DOI: 10.1002/cbic.200900002] [Citation(s) in RCA: 131] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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18
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Shiu HY, Chan TC, Ho CM, Liu Y, Wong MK, Che CM. Electron-Deficient Alkynes as Cleavable Reagents for the Modification of Cysteine-Containing Peptides in Aqueous Medium. Chemistry 2009; 15:3839-50. [DOI: 10.1002/chem.200800669] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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19
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Chalker JM, Lin YA, Boutureira O, Davis BG. Enabling olefin metathesis on proteins: chemical methods for installation of S-allyl cysteine. Chem Commun (Camb) 2009:3714-6. [DOI: 10.1039/b908004j] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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20
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Li Z, Wang C, Fu Y, Guo QX, Liu L. Substituent Effect on the Efficiency of Desulfurizative Rearrangement of Allylic Disulfides. J Org Chem 2008; 73:6127-36. [DOI: 10.1021/jo800747g] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Zhe Li
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Chen Wang
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Yao Fu
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Qing-Xiang Guo
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Lei Liu
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China
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21
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Fraser HL, Hopper DW, Kutterer KM, Crombie AL. Chapter 6.1 Six-membered ring systems: pyridine and benzo derivatives. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/s0959-6380(08)80014-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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22
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Gamblin DP, van Kasteren S, Bernardes GJL, Chalker JM, Oldham NJ, Fairbanks AJ, Davis BG. Chemical site-selective prenylation of proteins. MOLECULAR BIOSYSTEMS 2008; 4:558-61. [DOI: 10.1039/b802199f] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Crich D, Krishnamurthy V, Brebion F, Karatholuvhu M, Subramanian V, Hutton TK. Dechalcogenative allylic selenosulfide and disulfide rearrangements: complementary methods for the formation of allylic sulfides in the absence of electrophiles. Scope, limitations, and application to the functionalization of unprotected peptides in aqueous media. J Am Chem Soc 2007; 129:10282-94. [PMID: 17655306 PMCID: PMC2729405 DOI: 10.1021/ja072969u] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Primary allylic selenosulfates (seleno Bunte salts) and selenocyanates transfer the allylic selenide moiety to thiols giving primary allylic selenosulfides, which undergo rearrangement in the presence of PPh3 with the loss of selenium to give allylically rearranged allyl alkyl sulfides. This rearrangement may be conducted with prenyl-type selenosulfides to give isoprenyl alkyl sulfides. Alkyl secondary and tertiary allylic disulfides, formed by sulfide transfer from allylic heteroaryl disulfides to thiols, undergo desulfurative allylic rearrangement on treatment with PPh3 in methanolic acetonitrile at room temperature. With nerolidyl alkyl disulfides this rearrangement provides an electrophile-free method for the introduction of the farnesyl chain onto thiols. Both rearrangements are compatible with the full range of functionality found in the proteinogenic amino acids, and it is demonstrated that the desulfurative rearrangement functions in aqueous media, enabling the derivatization of unprotected peptides. It is also demonstrated that the allylic disulfide rearrangement can be induced in the absence of phosphine at room temperature by treatment with piperidine, or simply by refluxing in methanol. Under these latter conditions the reaction is also applicable to allyl aryl disulfides, providing allylically rearranged allyl aryl sulfides in good yields.
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Affiliation(s)
- David Crich
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, USA.
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24
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Maity S, Ghosh S. The first total synthesis of sequosempervirin A through an orthoester Claisen rearrangement—ring closing metathesis sequence. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.03.084] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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25
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Crich D, Zou Y, Brebion F. Sigmatropic rearrangements as tools for amino acid and peptide modification: application of the allylic sulfur ylide rearrangement to the preparation of neoglycoconjugates and other conjugates. J Org Chem 2007; 71:9172-7. [PMID: 17109543 PMCID: PMC2615470 DOI: 10.1021/jo061439y] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reaction of S-allyl cysteine derivatives, generated by the selenocysteine ligation, with rhodium carbenoids, stabilized and unstabilized, enables the attachment of diverse functionality onto cysteine residues. The reaction is successfully applied to the introduction of lipid-like residues, a fluorous alkyl chain, and mono- and disaccharides.
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Affiliation(s)
- David Crich
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, USA.
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