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Sang D, Dong B, Yu K, Tian J. Ferric Chloride-Mediated Transacylation of N-Acylsulfonamides. J Org Chem 2024; 89:2306-2319. [PMID: 38272854 DOI: 10.1021/acs.joc.3c02288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Transacylation of N-acylsulfonamides, which replaces the N-acyl group with a new one, is a challenging and underdeveloped fundamental transformation. Herein, a general method for transacylation of N-acylsulfonamides is presented. The transformation is enabled by coincident catalytic reactivities of FeCl3 for nonhydrolytic deacylation of N-acylsulfonamides and subsequent acylation of the resultant sulfonamides and can be conducted either stepwise or in a one-pot manner. GaCl3 and RuCl3·xH2O are similarly effective for the reaction. This method is mild, efficient, and operationally simple. A variety of functional groups such as halogeno, keto, nitro, cyano, ether, and ester are well tolerated, providing the transacylation products in good to excellent yields.
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Affiliation(s)
- Dayong Sang
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
| | - Bingqian Dong
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
| | - Kangkang Yu
- College of Biotechnology, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
| | - Juan Tian
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
- Hubei Provincial Key Laboratory of Drug Synthesis and Optimization, Jingmen, Hubei 448000, P. R. China
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2
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Sang D, Dong B, Liu Y, Tian J. Chemoselective Cleavage of Acylsulfonamides and Sulfonamides by Aluminum Halides. J Org Chem 2022; 87:3586-3595. [PMID: 35157468 DOI: 10.1021/acs.joc.1c03133] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The chemoselective cleavage of C-N bonds of amides, sulfonamides, and acylsulfonamides by aluminum halides is described. AlCl3 and AlI3 display complementary reactivities toward N-alkyl and N-acyl moieties. N-Alkylacylsulfonamides, secondary N-(tert-butyl)sulfonamides, and tertiary N-(tert-butyl)amides undergo N-dealkylation upon treatments with AlI3 generated in situ from aluminum and iodine in acetonitrile. In contrast, AlCl3 preferentially cleaves N-acyl groups of tertiary and secondary sulfonamides.
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Affiliation(s)
- Dayong Sang
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
| | - Bingqian Dong
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China.,School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, Hubei 430205, P. R. China
| | - Yunfeng Liu
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
| | - Juan Tian
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
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3
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Liu P, Yang J, Ai Y, Hao S, Chen X, Li F. Recyclable covalent triazine framework-supported iridium catalyst for the N-methylation of amines with methanol in the presence of carbonate. J Catal 2021. [DOI: 10.1016/j.jcat.2021.02.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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5
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Liu P, Tung NT, Xu X, Yang J, Li F. N-Methylation of Amines with Methanol in the Presence of Carbonate Salt Catalyzed by a Metal-Ligand Bifunctional Ruthenium Catalyst [( p-cymene)Ru(2,2'-bpyO)(H 2O)]. J Org Chem 2021; 86:2621-2631. [PMID: 33502847 DOI: 10.1021/acs.joc.0c02685] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A ruthenium complex [(p-cymene)Ru(2,2'-bpyO)(H2O)] was found to be a general and efficient catalyst for the N-methylation of amines with methanol in the presence of carbonate salt. Moreover, a series of sensitive substituents, such as nitro, ester, cyano, and vinyl groups, were tolerated under present conditions. It was confirmed that OH units in the ligand are crucial for the catalytic activity. Notably, this research exhibited the potential of metal-ligand bifunctional ruthenium catalysts for the hydrogen autotransfer process.
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Affiliation(s)
- Peng Liu
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People's Republic of China
| | - Nguyen Thanh Tung
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People's Republic of China
| | - Xiangchao Xu
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People's Republic of China
| | - Jiazhi Yang
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People's Republic of China
| | - Feng Li
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People's Republic of China
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6
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Che S, Zhu Q, Luo Z, Lian Y, Zhao Z. Copper-catalyzed oxidative methylation of sulfonamides by dicumyl peroxide. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1859118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Shiying Che
- College of Pharmacy, Shaanxi University of Chinese Medicine, Shaanxi, P.R. China
- School of Chemistry and Materials Science, Huaihua University, Huaihua, P.R. China
- Key Laboratory of Research and Utilization of Ethnomedicinal Plant Resources of Hunan Province, Huaihua University, Huaihua, P.R. China
| | - Qiao Zhu
- College of Pharmacy, Shaanxi University of Chinese Medicine, Shaanxi, P.R. China
- School of Chemistry and Materials Science, Huaihua University, Huaihua, P.R. China
- Key Laboratory of Research and Utilization of Ethnomedicinal Plant Resources of Hunan Province, Huaihua University, Huaihua, P.R. China
| | - Zhenghong Luo
- School of Chemistry and Materials Science, Huaihua University, Huaihua, P.R. China
| | - Yan Lian
- School of Chemistry and Materials Science, Huaihua University, Huaihua, P.R. China
| | - Zijian Zhao
- College of Pharmacy, Shaanxi University of Chinese Medicine, Shaanxi, P.R. China
- School of Chemistry and Materials Science, Huaihua University, Huaihua, P.R. China
- Key Laboratory of Research and Utilization of Ethnomedicinal Plant Resources of Hunan Province, Huaihua University, Huaihua, P.R. China
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7
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Meng C, Liu P, Tung NT, Han X, Li F. N-Methylation of Amines with Methanol in Aqueous Solution Catalyzed by a Water-Soluble Metal–Ligand Bifunctional Dinuclear Iridium Catalyst. J Org Chem 2020; 85:5815-5824. [PMID: 32237717 DOI: 10.1021/acs.joc.9b03411] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Chong Meng
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People’s Republic of China
| | - Peng Liu
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People’s Republic of China
| | - Nguyen Thanh Tung
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People’s Republic of China
| | - Xingyou Han
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People’s Republic of China
| | - Feng Li
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People’s Republic of China
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, People’s Republic of China
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Adriaenssens Y, Jiménez Fernández D, Vande Walle L, Elvas F, Joossens J, Lambeir A, Augustyns K, Lamkanfi M, Van der Veken P. Carboxylate isosteres for caspase inhibitors: the acylsulfonamide case revisited. Org Biomol Chem 2017; 15:7456-7473. [PMID: 28837200 DOI: 10.1039/c7ob01403a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As part of an ongoing effort to discover inhibitors of caspase-1 with an optimized selectivity and biopharmaceutical profile, acylsulfonamides were explored as carboxylate isosteres for caspase inhibitors. Acylsulfonamide analogues of the clinically investigated caspase-1 inhibitor VRT-043198 and of the pan-caspase inhibitor Z-VAD-CHO were synthesized. The isostere-containing analogues with an aldehyde warhead had inhibitory potencies comparable to the carboxylate references. In addition, the conformational and tautomeric characteristics of these molecules were determined using 1H- and 13C-based NMR. The propensity of acylsulfonamides with an aldehyde warhead to occur in a ring-closed conformation at physiological pH significantly increases the sensitivity to hydrolysis of the acylsulfonamide moiety, yielding the parent carboxylate containing inhibitors. These results indicate that the acylsulfonamide analogues of the aldehyde-based inhibitor VRT-043198 might have potential as a novel type of prodrug for the latter. Finally, inhibition of caspase 1 and 11 mediated inflammation in mouse macrophages was found to correlate with the potencies of the compounds in enzymatic assays.
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Affiliation(s)
- Y Adriaenssens
- Laboratory of Medicinal Chemistry, University of Antwerp, Universiteitsplein 1, B-2610 Wilrijk, Belgium.
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Feldman KS, Folda TS. Studies on the Synthesis of the Alkaloid (−)-Gilbertine via Indolidene Chemistry. J Org Chem 2016; 81:4566-75. [DOI: 10.1021/acs.joc.6b00348] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ken S. Feldman
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Tamara S. Folda
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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10
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Fülöpová V, Soural M. Mining the Chemical Space: Application of 2/4-Nitrobenzenesulfonamides in Solid-Phase Synthesis. ACS COMBINATORIAL SCIENCE 2015; 17:570-91. [PMID: 26325251 DOI: 10.1021/acscombsci.5b00089] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Polymer-supported benzenesulfonamides prepared from various immobilized primary amines and 2/4-nitrobenzenesulfonyl chloride have been used as key intermediates in different chemical transformations, including unusual rearrangements to yield a number of diverse privileged scaffolds. This review summarizes individual strategies in their application to date.
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Affiliation(s)
- Veronika Fülöpová
- Department of Organic Chemistry,
Institute of Molecular and Translational Medicine, Faculty of Science, Palacky University, 17 listopadu 12, 771 46 Olomouc, Czech Republic
| | - Miroslav Soural
- Department of Organic Chemistry,
Institute of Molecular and Translational Medicine, Faculty of Science, Palacky University, 17 listopadu 12, 771 46 Olomouc, Czech Republic
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11
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Moustafa AH, El-Sayed HA, El-Fattah Z Haikal AEFZ, Abd El-Hady RAA. Synthesis and antimicrobial activity of some 2-pyridone nucleosides containing a sulfonamide moiety. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2015; 32:221-38. [PMID: 23581715 DOI: 10.1080/15257770.2013.775449] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Glycosylation of 2-pyridonesulfonamide 1a,b with glycosyl/galactosyl bromide gave the corresponding glycosides 2a,b, 3a,b, 6a,b, and 7a,b, respectively. Deacetylation of the resulting glycosides gave the corresponding glycosides 4a,b, 5a,b, 8a,b, and 9a,b, respectively, in good yields. Furthermore, reaction of 2-pyridonesulfonamide 1b with lactosyl bromide gave a mixture the corresponding N, O-lactosides 10 and 11, which were deacetylated to give the corresponding glycosides 12 and 13, respectively. The structures of the new synthesized compounds were characterized by using IR, 1H, 13C NMR spectra, and microanalysis. Selected members of these compounds were screened for antimicrobial activity.
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Affiliation(s)
- Ahmed H Moustafa
- Department of Chemistry, Faculty of Science, Zagazig University, Zagazig, Egypt
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12
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Li F, Xie J, Shan H, Sun C, Chen L. General and efficient method for direct N-monomethylation of aromatic primary amines with methanol. RSC Adv 2012. [DOI: 10.1039/c2ra21487c] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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13
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De Marco R, Di Gioia ML, Liguori A, Perri F, Siciliano C, Spinella M. N-Alkylation of N-arylsulfonyl-α-amino acid methyl esters by trialkyloxonium tetrafluoroborates. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.10.042] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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García Ruano JL, Parra A, Marzo L, Yuste F, Mastranzo VM. One-pot synthesis of sulfonamides from methyl sulfinates using ultrasound. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.02.060] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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16
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Severinsen R, Bourne GT, Tran TT, Ankersen M, Begtrup M, Smythe ML. Library of Biphenyl Privileged Substructures using a Safety-Catch Linker Approach. ACTA ACUST UNITED AC 2008; 10:557-66. [DOI: 10.1021/cc800006g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rune Severinsen
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, 4072 Queensland, Australia, Purification & Chemistry, Novo Nordisk A/S, Novo Nordisk Park, 2760, Maaløv, Denmark, Protagonist Pty. Ltd., Level 7 Queensland Bioscience Precinct, 306 Carmody Road, St Lucia, 4072 Australia, and The Danish University for Pharmaceutical Sciences, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Gregory T. Bourne
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, 4072 Queensland, Australia, Purification & Chemistry, Novo Nordisk A/S, Novo Nordisk Park, 2760, Maaløv, Denmark, Protagonist Pty. Ltd., Level 7 Queensland Bioscience Precinct, 306 Carmody Road, St Lucia, 4072 Australia, and The Danish University for Pharmaceutical Sciences, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Tran T. Tran
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, 4072 Queensland, Australia, Purification & Chemistry, Novo Nordisk A/S, Novo Nordisk Park, 2760, Maaløv, Denmark, Protagonist Pty. Ltd., Level 7 Queensland Bioscience Precinct, 306 Carmody Road, St Lucia, 4072 Australia, and The Danish University for Pharmaceutical Sciences, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Michael Ankersen
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, 4072 Queensland, Australia, Purification & Chemistry, Novo Nordisk A/S, Novo Nordisk Park, 2760, Maaløv, Denmark, Protagonist Pty. Ltd., Level 7 Queensland Bioscience Precinct, 306 Carmody Road, St Lucia, 4072 Australia, and The Danish University for Pharmaceutical Sciences, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Mikael Begtrup
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, 4072 Queensland, Australia, Purification & Chemistry, Novo Nordisk A/S, Novo Nordisk Park, 2760, Maaløv, Denmark, Protagonist Pty. Ltd., Level 7 Queensland Bioscience Precinct, 306 Carmody Road, St Lucia, 4072 Australia, and The Danish University for Pharmaceutical Sciences, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Mark L. Smythe
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, 4072 Queensland, Australia, Purification & Chemistry, Novo Nordisk A/S, Novo Nordisk Park, 2760, Maaløv, Denmark, Protagonist Pty. Ltd., Level 7 Queensland Bioscience Precinct, 306 Carmody Road, St Lucia, 4072 Australia, and The Danish University for Pharmaceutical Sciences, Universitetsparken 2, 2100 Copenhagen, Denmark
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Merkx R, van Haren MJ, Rijkers DTS, Liskamp RMJ. Resin-Bound Sulfonyl Azides: Efficient Loading and Activation Strategy for the Preparation of the N-Acyl Sulfonamide Linker. J Org Chem 2007; 72:4574-7. [PMID: 17497928 DOI: 10.1021/jo0704513] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This paper describes an optimized protocol for the efficient loading of resin-bound aminoethane sulfonyl azides by either Boc- or Fmoc-protected amino thioacids. The resulting N-acyl sulfonamide is a convenient linker for use in Boc- or Fmoc-based solid-phase peptide synthesis. Activation of the N-acyl sulfonamide via a microwave-assisted alkylation procedure and subsequent treatment with functionalized nucleophiles yields C-terminally modified peptides that can be applied in chemoselective (bio)conjugation or ligation reactions.
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Affiliation(s)
- Remco Merkx
- Department of Medicinal Chemistry and Chemical Biology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, P. O. Box 80082, 3508 TB Utrecht, The Netherlands
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Zohrabi-Kalantari V, Heidler P, Larsen T, Link A. O,N,N'-trialkylisoureas as mild activating reagents for N-acylsulfonamide anchors. Org Lett 2006; 7:5665-7. [PMID: 16321017 DOI: 10.1021/ol052351u] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[chemical reaction: see text]. Prior to detachment of compounds synthesized on sulfonamide based safety-catch linkers, the molecular anchor has to be activated. This is achieved by alkylation of the nitrogen atom of the N-acylsulfonamide using different established protocols. As an addition to the existing repertoire of activating reagents, we suggest the use of O,N,N'-trialkylisoureas. Besides the demonstration of the feasibility of these mild alkylating agents for this purpose, custom-tailored novel O,N,N'-trialkylisoureas prepared from electron-deficient alcohols are reported.
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Affiliation(s)
- Vida Zohrabi-Kalantari
- Institut für Pharmazeutische Chemie, Philipps-Universität Marburg, Marbacher Weg 6, D-35032 Marburg, Germany
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Barlett KN, Kolakowski RV, Katukojvala S, Williams LJ. Thio Acid/Azide Amidation: An Improved Route to N-Acyl Sulfonamides. Org Lett 2006; 8:823-6. [PMID: 16494450 DOI: 10.1021/ol052671d] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A one-pot procedure for the conversion of carboxylic acids to N-acyl sulfonamides, via thio acid/azide amidation, is presented. The method is compatible with acid- and base-sensitive amino acid protection. N-Acyl sulfonamide synthesis on solid support, peptide thio acid/sulfonazide coupling, and N-alkyl amide synthesis via selective cleavage of sulfonyl from an N-alkyl-N-acyl sulfonamide are also reported.
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Affiliation(s)
- Kristin N Barlett
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, USA
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20
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Tai CH, Wu HC, Li WR. Studies on a novel safety-catch linker cleaved by Pummerer rearrangement. Org Lett 2005; 6:2905-8. [PMID: 15330644 DOI: 10.1021/ol049120s] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We describe the use of a sulfide linkage as a safety-catch linker. This linker is significantly stable to acidic as well as basic conditions and allows transformations to be carried out on solid supports. Moreover, its cleavage is facile by applying Pummerer rearrangement after transforming it to sulfoxide.
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Affiliation(s)
- Chih-Ho Tai
- Department of Chemistry, National Central University, Chung-Li, Taiwan, 32054
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21
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Heidler P, Link A. N-Acyl-N-alkyl-sulfonamide anchors derived from Kenner’s safety-catch linker: powerful tools in bioorganic and medicinal chemistry. Bioorg Med Chem 2005; 13:585-99. [PMID: 15653327 DOI: 10.1016/j.bmc.2004.10.045] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2004] [Accepted: 10/18/2004] [Indexed: 11/16/2022]
Abstract
In 1971 Kenner et al. introduced the safety-catch principle into solid phase peptide synthesis. Thus two contradicting needs were addressed. On the one hand, sufficient stability of the linker substrate bond to impede hydrolysis or similar side reactions, on the other hand mild chemical conditions allowing for unscathed liberation of the precious products. Over the years this linker type emerged in several different chemical disciplines and nowadays it presents a useful and broadly applicable tool. Recent advancements and applications based on Kenner's safety-catch linker are reviewed.
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Affiliation(s)
- Philipp Heidler
- Faculty of Pharmacy, Philipps-University Marburg, Marbacher Weg 6, D-35032, Germany
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22
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Johnson DC, Widlanski TS. A reversible safety-catch method for the hydrogenolysis of N-benzyl moieties. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.09.118] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Caddick S, Wilden JD, Judd DB. Direct Synthesis of Sulfonamides and Activated Sulfonate Esters from Sulfonic Acids. J Am Chem Soc 2004; 126:1024-5. [PMID: 14746462 DOI: 10.1021/ja0397658] [Citation(s) in RCA: 157] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A general new method for the preparation of sulfonamides and activated sulfonate esters by the direct coupling of sulfonic acid salts with amines and alcohols using the reagent triphenylphosphine ditriflate is described. A new reusable polymer-supported reagent for these transformations under heterogeneous conditions is also described. These methods provide a fundamentally new approach to making small molecules containing the sulfonamide functional group.
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Affiliation(s)
- Stephen Caddick
- The Christopher Ingold Laboratories, Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK.
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Maclean D, Zhu J, Chen M, Hale R, Satymurthy N, Barrio JR. Safety-catch linker strategies for the production of radiopharmaceuticals labeled with positron-emitting isotopes. J Am Chem Soc 2003; 125:10168-9. [PMID: 12926928 DOI: 10.1021/ja034725p] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel synthetic stratetegy for compounds labeled with the positron-emitting isotope carbon-11 is described. The use of precursors attached to a solid support via safety-catch linkers allows selective release of radiolabeled material, leaving unreacted precursor attached to the support. Two different linkers demonstrate the application to the preparation of radiolabeled N-alkyl tertiary amines and N-alkylsulfonamides. This technique is expected to lead to more widespread use of positron emission tomography for the in vivo analysis of compound behavior.
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Affiliation(s)
- Derek Maclean
- Affymax Research Institute, 4001 Miranda Avenue, Palo Alto, California 94304, USA.
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Horton DA, Bourne GT, Smythe ML. Exploring privileged structures: the combinatorial synthesis of cyclic peptides. Mol Divers 2003; 5:289-304. [PMID: 12549678 DOI: 10.1023/a:1021365402751] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Head-to-tail cyclic peptides have been reported to bind to multiple, unrelated classes of receptor with high affinity. They may therefore be considered to be privileged structures. This review outlines the strategies by which both macrocyclic cyclic peptides and cyclic dipeptides or diketopiperazines have been synthesised in combinatorial libraries. It also briefly outlines some of the biological applications of these molecules, thereby justifying their inclusion as privileged structures.
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Affiliation(s)
- Douglas A Horton
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, 4072, Qld., Australia
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27
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Dolle RE. Comprehensive survey of combinatorial library synthesis: 2001. JOURNAL OF COMBINATORIAL CHEMISTRY 2002; 4:369-418. [PMID: 12217012 DOI: 10.1021/cc020039v] [Citation(s) in RCA: 104] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Roland E Dolle
- Department of Chemistry, Adolor Corporation, 371 Phoenixville Pike, Malvern, PA 19355, USA.
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Horton DA, Bourne GT, Smythe ML. Exploring privileged structures: the combinatorial synthesis of cyclic peptides. J Comput Aided Mol Des 2002; 16:415-30. [PMID: 12489688 DOI: 10.1023/a:1020863921840] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Head-to-tail cyclic peptides have been reported to bind to multiple, unrelated classes of receptor with high affinity. They may therefore be considered to be privileged structures. This review outlines the strategies by which both macrocyclic cyclic peptides and cyclic dipeptides or diketopiperazines have been synthesised in combinatorial libraries. It also briefly outlines some of the biological applications of these molecules, thereby justifying their inclusion as privileged structures.
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Affiliation(s)
- Douglas A Horton
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, 4072, Qld., Australia
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