1
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Kitoun C, Saidjalolov S, Bouquet D, Djago F, Remaury QB, Sargueil B, Poinot P, Etheve-Quelquejeu M, Iannazzo L. Traceless Staudinger Ligation to Access Stable Aminoacyl- or Peptidyl-Dinucleotide. ACS OMEGA 2023; 8:3850-3860. [PMID: 36743074 PMCID: PMC9893454 DOI: 10.1021/acsomega.2c06135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 10/26/2022] [Indexed: 06/18/2023]
Abstract
Aminoacyl- and peptidyl-tRNA are specific biomolecules involved in many biological processes, from ribosomal protein synthesis to the synthesis of peptidoglycan precursors. Here, we report a post-synthetic approach based on traceless Staudinger ligation for the synthesis of a stable amide bond to access aminoacyl- or peptidyl-di-nucleotide. A series of amino-acid and peptide ester phenyl phosphines were synthetized, and their reactivity was studied on a 2'-N3 di-nucleotide. The corresponding 2'-amide di-nucleotides were obtained and characterized by LC-HRMS, and mechanistic interpretations of the influence of the amino acid phenyl ester phosphine were proposed. We also demonstrated that enzymatic 5'-OH phosphorylation is compatible with the acylated di-nucleotide, allowing the possibility to access stable aminoacylated-tRNA.
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Affiliation(s)
- Camélia Kitoun
- Université
Paris Cité, CNRS, Laboratoire de Chimie et Biochimie Pharmacologiques
et Toxicologiques, Paris F-75006, France
| | - Saidbakhrom Saidjalolov
- Université
Paris Cité, CNRS, Laboratoire de Chimie et Biochimie Pharmacologiques
et Toxicologiques, Paris F-75006, France
| | - Delphine Bouquet
- Université
Paris Cité, CNRS, Laboratoire de Chimie et Biochimie Pharmacologiques
et Toxicologiques, Paris F-75006, France
| | - Fabiola Djago
- Institut
de Chimie des Milieux et Matériaux de Poitiers IC2MP, Université
de Poitiers, UMR 7285, Poitiers 86073, France
| | - Quentin Blancart Remaury
- Institut
de Chimie des Milieux et Matériaux de Poitiers IC2MP, Université
de Poitiers, UMR 7285, Poitiers 86073, France
| | - Bruno Sargueil
- Université
Paris Cité, CNRS, UMR 8038/CiTCoM, Paris F-75006, France
| | - Pauline Poinot
- Institut
de Chimie des Milieux et Matériaux de Poitiers IC2MP, Université
de Poitiers, UMR 7285, Poitiers 86073, France
| | - Mélanie Etheve-Quelquejeu
- Université
Paris Cité, CNRS, Laboratoire de Chimie et Biochimie Pharmacologiques
et Toxicologiques, Paris F-75006, France
| | - Laura Iannazzo
- Université
Paris Cité, CNRS, Laboratoire de Chimie et Biochimie Pharmacologiques
et Toxicologiques, Paris F-75006, France
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2
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Zhao F, Russo P, Mancuso R, Gabriele B, Wu XF. Copper-Catalyzed Carbonylative Coupling of Alkyl Iodides with Phenols for the Synthesis of Esters. J Catal 2022. [DOI: 10.1016/j.jcat.2022.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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3
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Meynier V, Iannazzo L, Catala M, Oerum S, Braud E, Atdjian C, Barraud P, Fonvielle M, Tisné C, Ethève-Quelquejeu M. Synthesis of RNA-cofactor conjugates and structural exploration of RNA recognition by an m6A RNA methyltransferase. Nucleic Acids Res 2022; 50:5793-5806. [PMID: 35580049 PMCID: PMC9178011 DOI: 10.1093/nar/gkac354] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 04/22/2022] [Accepted: 05/10/2022] [Indexed: 11/14/2022] Open
Abstract
Chemical synthesis of RNA conjugates has opened new strategies to study enzymatic mechanisms in RNA biology. To gain insights into poorly understood RNA nucleotide methylation processes, we developed a new method to synthesize RNA-conjugates for the study of RNA recognition and methyl-transfer mechanisms of SAM-dependent m6A RNA methyltransferases. These RNA conjugates contain a SAM cofactor analogue connected at the N6-atom of an adenosine within dinucleotides, a trinucleotide or a 13mer RNA. Our chemical route is chemo- and regio-selective and allows flexible modification of the RNA length and sequence. These compounds were used in crystallization assays with RlmJ, a bacterial m6A rRNA methyltransferase. Two crystal structures of RlmJ in complex with RNA–SAM conjugates were solved and revealed the RNA-specific recognition elements used by RlmJ to clamp the RNA substrate in its active site. From these structures, a model of a trinucleotide bound in the RlmJ active site could be built and validated by methyltransferase assays on RlmJ mutants. The methyl transfer by RlmJ could also be deduced. This study therefore shows that RNA-cofactor conjugates are potent molecular tools to explore the active site of RNA modification enzymes.
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Affiliation(s)
- Vincent Meynier
- Expression Génétique Microbienne, UMR 8261, CNRS, Université Paris Cité, Institut de Biologie Physico-Chimique (IBPC), 75005, Paris, France
| | - Laura Iannazzo
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601, CNRS, Université Paris Cité, 75006, Paris, France
| | - Marjorie Catala
- Expression Génétique Microbienne, UMR 8261, CNRS, Université Paris Cité, Institut de Biologie Physico-Chimique (IBPC), 75005, Paris, France
| | - Stephanie Oerum
- Expression Génétique Microbienne, UMR 8261, CNRS, Université Paris Cité, Institut de Biologie Physico-Chimique (IBPC), 75005, Paris, France
| | - Emmanuelle Braud
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601, CNRS, Université Paris Cité, 75006, Paris, France
| | - Colette Atdjian
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601, CNRS, Université Paris Cité, 75006, Paris, France
| | - Pierre Barraud
- Expression Génétique Microbienne, UMR 8261, CNRS, Université Paris Cité, Institut de Biologie Physico-Chimique (IBPC), 75005, Paris, France
| | - Matthieu Fonvielle
- Sorbonne Université, Université Paris Cité, Centre de recherche des Cordeliers, 75006, Paris, France
| | - Carine Tisné
- Expression Génétique Microbienne, UMR 8261, CNRS, Université Paris Cité, Institut de Biologie Physico-Chimique (IBPC), 75005, Paris, France
| | - Mélanie Ethève-Quelquejeu
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601, CNRS, Université Paris Cité, 75006, Paris, France
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4
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Wingen LM, Braun C, Rausch M, Gross H, Schneider T, Menche D. Versatile synthesis of pathogen specific bacterial cell wall building blocks. RSC Adv 2022; 12:15046-15069. [PMID: 35702425 PMCID: PMC9115884 DOI: 10.1039/d2ra01915a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 05/05/2022] [Indexed: 11/21/2022] Open
Abstract
Full details on the design, strategies and tactics for development of a novel synthetic sequence to farnesyl lipid I and II analogs is reported. The modular route was based on a three coupling strategy involving an efficient solid phase synthesis of the elaborate peptide fragment, which proceeded with excellent yield and stereoselectivity and was efficiently applied for the convergent synthesis of 3-lipid I and II. Furthermore, the generality of this route was demonstrated by synthesis of 3-lipid I congeners that are characteristic for S. aureus and E. faecalis. All 3-lipid I and II building blocks were obtained in high purity revealing high spectroscopic resolution. A modular three coupling strategy involving a versatile solid phase peptide synthesis enables access to pathogen specific lipid analogs in high yield, revealing high spectroscopic resolution of these key bacterial cell wall building blocks.![]()
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Affiliation(s)
- Lukas Martin Wingen
- Kekulé Institute of Organic Chemistry and Biochemistry, University of Bonn, D-53121 Bonn, Germany
| | - Christina Braun
- Kekulé Institute of Organic Chemistry and Biochemistry, University of Bonn, D-53121 Bonn, Germany
| | - Marvin Rausch
- Institute for Pharmaceutical Microbiology, University Clinic Bonn, University of Bonn, D-53115 Bonn, Germany
- German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, Germany
| | - Harald Gross
- Pharmaceutical Institute, Dept. of Pharmaceutical Biology, University of Tübingen, D-72076 Tübingen, Germany
| | - Tanja Schneider
- Institute for Pharmaceutical Microbiology, University Clinic Bonn, University of Bonn, D-53115 Bonn, Germany
| | - Dirk Menche
- Kekulé Institute of Organic Chemistry and Biochemistry, University of Bonn, D-53121 Bonn, Germany
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5
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Lv J, Li ZH, Deng AJ, Qin HL. A unified total synthesis of benzo[ d][1,3]dioxole-type benzylisoquinoline alkaloids of aporphines, coptisines, and dibenzopyrrocolines. Org Biomol Chem 2021; 20:658-666. [PMID: 34951439 DOI: 10.1039/d1ob02258j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The first total synthesis of (S)-(+)-ovigerine, (S)-(+)-N-formylovigerine, and (6aS,6a'S)-(+)-ovigeridimerine of aporphine alkaloids with a benzo[d][1,3]dioxole structure feature was established. The strategy was based upon the well-known Pd-catalyzed arylation to set the aporphine framework, and Noyori asymmetric hydrogenation followed by diastereoselective resolution to achieve excellent enantioselectivity. By slightly modifying the total synthetic route and strategically combining it with a aza-Michael addition, Bischler-Napieralski reaction and N-arylation, this methodology was also applied to the total syntheses of benzo[d][1,3]dioxole-type benzylisoquinoline alkaloids of coptisines and dibenzopyrrocolines, including two impatiens, tetrahydrocoptisine, and quaternary coptisine bromide of coptisines and two dibenzopyrrocoline analogues, with the syntheses of all of these target compounds being efficient. Among the nine synthesized compounds, the total syntheses of the three aporphines and the two impatiens, all with ee values of greater than 99%, were reported for the first time. This work also represents the first unification of synthetic routes for the total synthesis of benzo[d][1,3]dioxole-type aporphines, coptisines, and dibenzopyrrocolines.
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Affiliation(s)
- Jie Lv
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
| | - Zhi-Hong Li
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
| | - An-Jun Deng
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
| | - Hai-Lin Qin
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
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6
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Duan S, Yang X, Yang Z, Liu Y, Shi Q, Yang Z, Wu H, Han Y, Wang Y, Shen H, Huang Z, Dong XH, Zhang Z. A Versatile Synthetic Platform for Discrete Oligo- and Polyesters Based on Optimized Protective Groups Via Iterative Exponential Growth. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01498] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Suhua Duan
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
| | - Xiaojie Yang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
| | - Ze Yang
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, 510640 Guangzhou, China
| | - Yuxin Liu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
| | - Qiunan Shi
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
| | - Zhilin Yang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
| | - Haibing Wu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
| | - Yue Han
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
| | - Yongquan Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
| | - Hang Shen
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
| | - Zhihao Huang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
| | - Xue-Hui Dong
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, 510640 Guangzhou, China
| | - Zhengbiao Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
- State Key Laboratory of Radiation Medicine and Protection, Soochow University, 215123 Suzhou, China
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7
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Veltri L, Amuso R, Petrilli M, Cuocci C, Chiacchio MA, Vitale P, Gabriele B. A Zinc-Mediated Deprotective Annulation Approach to New Polycyclic Heterocycles. Molecules 2021; 26:molecules26082318. [PMID: 33923572 PMCID: PMC8072660 DOI: 10.3390/molecules26082318] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/12/2021] [Accepted: 04/15/2021] [Indexed: 11/25/2022] Open
Abstract
A straightforward approach to new polycyclic heterocycles, 1H-benzo[4,5]imidazo[1,2-c][1,3]oxazin-1-ones, is presented. It is based on the ZnCl2-promoted deprotective 6-endo-dig heterocyclization of N-Boc-2-alkynylbenzimidazoles under mild conditions (CH2Cl2, 40 °C for 3 h). The zinc center plays a dual role, as it promotes Boc deprotection (with formation of the tert-butyl carbocation, which can be trapped by substrates bearing a nucleophilic group) and activates the triple bond toward intramolecular nucleophilic attack by the carbamate group. The structure of representative products has been confirmed by X-ray diffraction analysis.
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Affiliation(s)
- Lucia Veltri
- Laboratory of Industrial and Synthetic Organic Chemistry (LISOC), Department of Chemistry and Chemical Technologies, University of Calabria, Via Pietro Bucci 12/C, 87036 Arcavacata di Rende, Italy; (R.A.); (M.P.)
- Correspondence: (L.V.); (B.G.); Tel.: +39-0984-492817 (L.V.); +39-0984-492815 (B.G.)
| | - Roberta Amuso
- Laboratory of Industrial and Synthetic Organic Chemistry (LISOC), Department of Chemistry and Chemical Technologies, University of Calabria, Via Pietro Bucci 12/C, 87036 Arcavacata di Rende, Italy; (R.A.); (M.P.)
| | - Marzia Petrilli
- Laboratory of Industrial and Synthetic Organic Chemistry (LISOC), Department of Chemistry and Chemical Technologies, University of Calabria, Via Pietro Bucci 12/C, 87036 Arcavacata di Rende, Italy; (R.A.); (M.P.)
| | - Corrado Cuocci
- Institute of Crystallography, National Research Council, Via Amendola, 122/O, 70126 Bari, Italy;
| | - Maria A. Chiacchio
- Department of Drug Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy;
| | - Paola Vitale
- Department of Pharmacy—Pharmaceutical Sciences, University of Bari “Aldo Moro”, Via E. Orabona 4, 70125 Bari, Italy;
| | - Bartolo Gabriele
- Laboratory of Industrial and Synthetic Organic Chemistry (LISOC), Department of Chemistry and Chemical Technologies, University of Calabria, Via Pietro Bucci 12/C, 87036 Arcavacata di Rende, Italy; (R.A.); (M.P.)
- Correspondence: (L.V.); (B.G.); Tel.: +39-0984-492817 (L.V.); +39-0984-492815 (B.G.)
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8
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Wosniok PR, Knopf C, Dreisigacker S, Orozco‐Rodriguez JM, Hinkelmann B, Mueller PP, Brönstrup M, Menche D. SAR Studies of the Leupyrrins: Design and Total Synthesis of Highly Potent Simplified Leupylogs. Chemistry 2020; 26:15074-15078. [PMID: 32608026 PMCID: PMC7756798 DOI: 10.1002/chem.202002622] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Indexed: 02/01/2023]
Abstract
Leupyrrins are highly potent antifungal agents. A structure-activity-relationship study of natural and synthetic derivatives is reported which reveals important insights into the biological relevance of several structural subunits leading to the discovery of highly potent but drastically simplified leupylogs that incorporate a stable and readily available aromatic side chain. For their synthesis a concise strategy is described that enables a short and versatile access.
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Affiliation(s)
- Paul R. Wosniok
- Kekulé-Institut für Organische Chemie und BiochemieUniversität BonnGerhard-Domagk-Str. 153121BonnGermany
- Current address: Eurofins Umwelt West GmbH Wesseling, Vorgebirgsstrasse 20, 50389 Wesseling, Germany
| | - Christopher Knopf
- Kekulé-Institut für Organische Chemie und BiochemieUniversität BonnGerhard-Domagk-Str. 153121BonnGermany
- Current address: Eurofins Umwelt West GmbH Wesseling, Eurofins Genomics Europe Synthesis GmbH, Anzinger Str. 7a, 85560 Ebersberg, Germany
| | - Sandra Dreisigacker
- Kekulé-Institut für Organische Chemie und BiochemieUniversität BonnGerhard-Domagk-Str. 153121BonnGermany
- Current address: HWI pharma services GmbHRheinzaberner Straße 876761RuelzheimGermany
| | | | - Bettina Hinkelmann
- Helmholtz Centre for Infection ResearchInhoffenstraße 738124BraunschweigGermany
| | - Peter P. Mueller
- Helmholtz Centre for Infection ResearchInhoffenstraße 738124BraunschweigGermany
| | - Mark Brönstrup
- Helmholtz Centre for Infection ResearchInhoffenstraße 738124BraunschweigGermany
| | - Dirk Menche
- Kekulé-Institut für Organische Chemie und BiochemieUniversität BonnGerhard-Domagk-Str. 153121BonnGermany
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9
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Kalita S, Kalita S, Paul A, Sarkar A, Mandal B. Peptidomimetics prepared by tail-to-side chain one component peptide stapling inhibit Alzheimer's amyloid-β fibrillogenesis. Chem Sci 2020; 11:4171-4179. [PMID: 34122880 PMCID: PMC8152599 DOI: 10.1039/c9sc06076f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Alzheimer's disease (AD) is the most common form of dementia affecting the elderly population worldwide. Despite enormous efforts and considerable advancement in research, no therapeutic agents have come to light to date. However, many peptide-based and small molecule inhibitors interact efficiently with the amyloid-β (Aβ) peptide and alter its aggregation pathway. On the other hand, stapled peptides have been developed mainly to stabilize α-helix conformations and study protein–protein interactions. β-Sheet stabilization or destabilization by stapled peptides has not been explored enough. Herein, we describe the generation of a library of “tail-to-side chain” stapled peptides via lactamization and their application for the first time as modulators of Aβ1-40 self-association and fibrillogenesis. They also disrupt the preformed fibrillar aggregates into nontoxic species. Their stability in the presence of proteolytic enzymes is increased due to stapling. Therefore, the stapled peptides thus formed can be useful as potent amyloid aggregation inhibitors and pave a therapeutic pathway for combating amyloid-related diseases. Also, they may help in gaining insight into the process of aggregation. Tail to side-chain stapled peptides inhibit fibrillogenesis of Alzheimer's amyloid β peptide by facilitating off-pathway aggregation.![]()
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Affiliation(s)
- Sujan Kalita
- Laboratory of Peptide and Amyloid Research, Department of Chemistry, Indian Institute of Technology Guwahati Assam-781039 India
| | - Sourav Kalita
- Laboratory of Peptide and Amyloid Research, Department of Chemistry, Indian Institute of Technology Guwahati Assam-781039 India
| | - Ashim Paul
- Laboratory of Peptide and Amyloid Research, Department of Chemistry, Indian Institute of Technology Guwahati Assam-781039 India
| | - Amar Sarkar
- Laboratory of Peptide and Amyloid Research, Department of Chemistry, Indian Institute of Technology Guwahati Assam-781039 India
| | - Bhubaneswar Mandal
- Laboratory of Peptide and Amyloid Research, Department of Chemistry, Indian Institute of Technology Guwahati Assam-781039 India
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10
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Abstract
The protection of amino acid reactive functionalities including the α-amino group, the side chain (amines, carboxylic acids, alcohols, and thiols), or the carboxylic acid terminus is an essential strategy in peptide chemistry. This is mandatory to prevent polymerization of the amino acids and to minimize undesirable side reactions during the synthetic process. Proper protecting group manipulation strategies can maximize the yield of the desired product or allow the construction of complex peptide-based structures. Thus, the compatibility and orthogonality of each protecting group are key to achieve the proper control of molecular structure. Herein, we describe some common protecting groups and their general unmasking methods, in order to mask and expose amine, carboxylic acid, alcohol, and thiol functionalities to achieve the synthesis of peptides and related molecules.
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11
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Kumpina I, Brodyagin N, MacKay JA, Kennedy SD, Katkevics M, Rozners E. Synthesis and RNA-Binding Properties of Extended Nucleobases for Triplex-Forming Peptide Nucleic Acids. J Org Chem 2019; 84:13276-13298. [PMID: 31538780 DOI: 10.1021/acs.joc.9b01133] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Triple-helix formation, using Hoogsteen hydrogen bonding of triplex-forming oligonucleotides, represents an attractive method for sequence-specific recognition of double-stranded nucleic acids. However, practical applications using triple-helix-forming oligonucleotides and their analogues are limited to long homopurine sequences. The key problem for recognition of pyrimidines is that they present only one hydrogen-bond acceptor or donor group in the major groove. Herein, we report our first attempt to overcome this problem by using peptide nucleic acids (PNAs) modified with extended nucleobases that form three hydrogen bonds along the entire Hoogsteen edge of the Watson-Crick base pair. New nucleobase triples (five) were designed, and their hydrogen bonding feasibility was confirmed by ab initio calculations. PNA monomers carrying the modified nucleobases were synthesized and incorporated in short model PNA sequences. Isothermal titration calorimetry showed that these nucleobases had a modest binding affinity for their double-stranded RNA (dsRNA) targets. Finally, molecular modeling of the modified triples in PNA-dsRNA helix suggested that the modest binding affinity was caused by subtle structural deviations from ideal hydrogen-bonding arrangements or disrupted π-stacking of the extended nucleobase scaffolds.
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Affiliation(s)
- Ilze Kumpina
- Latvian Institute of Organic Synthesis , Aizkraukles 21 , Riga LV-1006 , Latvia
| | - Nikita Brodyagin
- Department of Chemistry , Binghamton University, State University of New York , Binghamton , New York 13902 , United States
| | - James A MacKay
- Department of Chemistry and Biochemistry , Elizabethtown College , Elizabethtown , Pennsylvania 17022 , United States
| | - Scott D Kennedy
- Department of Biochemistry and Biophysics , University of Rochester School of Medicine and Dentistry , Rochester , New York 14642 , United States
| | - Martins Katkevics
- Latvian Institute of Organic Synthesis , Aizkraukles 21 , Riga LV-1006 , Latvia
| | - Eriks Rozners
- Department of Chemistry , Binghamton University, State University of New York , Binghamton , New York 13902 , United States
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12
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Schulze D, Traber J, Ritter M, Görls H, Pohnert G, Westerhausen M. Total syntheses of the bilirubin oxidation end product Z-BOX C and its isomeric form Z-BOX D. Org Biomol Chem 2019; 17:6489-6496. [PMID: 31206115 DOI: 10.1039/c9ob01117j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oxidative degradation products of bilirubin (BOXes) are biologically highly active and certain BOXes cause long-lasting narrowing of cerebral blood vessels presumably with a significant role in subarachnoid hemorrhage. Due to the fact that mode of action as well as fate of these BOXes is widely unknown, larger amounts of these bilirubin degradation end products are required. The total synthesis of colorless (Z)-3-(5-(2-amino-2-oxoethylidene)-4-methyl-2-oxo-2,5-dihydro-1H-pyrrol-3-yl)propanoic acid (BOX C) succeeds via a seven-step procedure with a total yield of 20%. Its isomeric form (Z)-3-(2-(2-amino-2-oxoethylidene)-4-methyl-5-oxo-2,5-dihydro-1H-pyrrol-3-yl)propanoic acid (BOX D) can be prepared via a five-step protocol with a yield of 30%. NMR and crystallographic studies reveal that charge delocalization within the conjugated π-systems of BOXes C and D is negligible. Exposure of solutions of Z-BOX C and Z-BOX D to bright sunlight leads to Z/E-isomerization and mixtures of the respective E/Z-BOXes C and D.
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Affiliation(s)
- Daniel Schulze
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, D-07743 Jena, Germany.
| | - Juliane Traber
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, D-07743 Jena, Germany.
| | - Marcel Ritter
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Lessingstraße 8, D-07743 Jena, Germany
| | - Helmar Görls
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, D-07743 Jena, Germany.
| | - Georg Pohnert
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Lessingstraße 8, D-07743 Jena, Germany
| | - Matthias Westerhausen
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, D-07743 Jena, Germany.
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13
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Chinthakindi PK, Benediktsdottir A, Ibrahim A, Wared A, Aurell CJ, Pettersen A, Zamaratski E, Arvidsson PI, Chen Y, Sandström A. Synthesis of Sulfonimidamide-Based Amino Acid Building Blocks with Orthogonal Protecting Groups. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801541] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Praveen K. Chinthakindi
- Department of Medicinal Chemistry; Drug Design and Discovery; Uppsala University, Box 574, 75123; Uppsala Sweden
| | - Andrea Benediktsdottir
- Department of Medicinal Chemistry; Drug Design and Discovery; Uppsala University, Box 574, 75123; Uppsala Sweden
| | - Ayah Ibrahim
- Department of Medicinal Chemistry; Drug Design and Discovery; Uppsala University, Box 574, 75123; Uppsala Sweden
| | - Atta Wared
- Department of Medicinal Chemistry; Drug Design and Discovery; Uppsala University, Box 574, 75123; Uppsala Sweden
| | - Carl-Johan Aurell
- Large Scale Chemistry; Early Chemical Development; AstraZeneca; 83 Gothenburg Sweden
| | - Anna Pettersen
- Early Product Development; Pharmaceutical Sciences; IMED Biotech Unit; AstraZeneca; 83 Gothenburg Sweden
| | - Edouard Zamaratski
- Department of Medicinal Chemistry; Drug Design and Discovery; Uppsala University, Box 574, 75123; Uppsala Sweden
| | - Per I. Arvidsson
- Science for Life Laboratory; Drug Discovery and Development Platform and Division of Translational Medicine and Chemical Biology; Department of Medical Biochemistry and Biophysics; Karolinska Institutet; 171 77 Stockholm Sweden
- Catalysis and Peptide Research Unit; University of KwaZulu Natal; 4000 Durban South Africa
| | - Yantao Chen
- Medicinal Chemistry; Cardiovascular Renal and Metabolism; IMED Biotech Unit; AstraZeneca; 431 83 Gothenburg Sweden
| | - Anja Sandström
- Department of Medicinal Chemistry; Drug Design and Discovery; Uppsala University, Box 574, 75123; Uppsala Sweden
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14
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Atdjian C, Iannazzo L, Braud E, Ethève-Quelquejeu M. Synthesis of SAM-Adenosine Conjugates for the Study of m 6
A-RNA Methyltransferases. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800798] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Colette Atdjian
- Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques; Team “Chemistry of RNAs, nucleosides, peptides and heterocycles”; Université Paris Descartes; UMR 8601; 75005 Paris France
| | - Laura Iannazzo
- Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques; Team “Chemistry of RNAs, nucleosides, peptides and heterocycles”; Université Paris Descartes; UMR 8601; 75005 Paris France
| | - Emmanuelle Braud
- Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques; Team “Chemistry of RNAs, nucleosides, peptides and heterocycles”; Université Paris Descartes; UMR 8601; 75005 Paris France
| | - Mélanie Ethève-Quelquejeu
- Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques; Team “Chemistry of RNAs, nucleosides, peptides and heterocycles”; Université Paris Descartes; UMR 8601; 75005 Paris France
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15
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La MT, Kim HK. A fast and practical synthesis of tert-butyl esters from 2-tert-butoxypyridine using boron trifluoride·diethyl etherate under mild conditions. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.05.050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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16
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Schlimm A, Stucke N, Flöser BM, Rusch T, Krahmer J, Näther C, Strunskus T, Magnussen OM, Tuczek F. Influence of a Metal Substrate on Small-Molecule Activation Mediated by a Surface-Adsorbed Complex. Chemistry 2018; 24:10732-10744. [DOI: 10.1002/chem.201800911] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 03/29/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Alexander Schlimm
- Institute of Inorganic Chemistry; Christian Albrechts University Kiel; Max-Eyth-Strasse 2 24118 Kiel Germany
| | - Nadja Stucke
- Institute of Inorganic Chemistry; Christian Albrechts University Kiel; Max-Eyth-Strasse 2 24118 Kiel Germany
| | - Benedikt M. Flöser
- Institute of Inorganic Chemistry; Christian Albrechts University Kiel; Max-Eyth-Strasse 2 24118 Kiel Germany
| | - Talina Rusch
- Institute of Experimental and Applied Physics; Christian Albrechts University Kiel; Leibnizstrasse 19 24118 Kiel Germany
| | - Jan Krahmer
- Institute of Inorganic Chemistry; Christian Albrechts University Kiel; Max-Eyth-Strasse 2 24118 Kiel Germany
| | - Christian Näther
- Institute of Inorganic Chemistry; Christian Albrechts University Kiel; Max-Eyth-Strasse 2 24118 Kiel Germany
| | - Thomas Strunskus
- Institute for Materials Science-Multicomponent Materials; Christian Albrechts University Kiel; Kaiserstrasse 2 24143 Kiel Germany
| | - Olaf M. Magnussen
- Institute of Experimental and Applied Physics; Christian Albrechts University Kiel; Leibnizstrasse 19 24118 Kiel Germany
| | - Felix Tuczek
- Institute of Inorganic Chemistry; Christian Albrechts University Kiel; Max-Eyth-Strasse 2 24118 Kiel Germany
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17
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Fraczyk J, Kaminski ZJ, Katarzynska J, Kolesinska B. 4-(4,6-Dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium Toluene-4-sulfonate (DMT/NMM/TsO−
) Universal Coupling Reagent for Synthesis in Solution. Helv Chim Acta 2017. [DOI: 10.1002/hlca.201700187] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Justyna Fraczyk
- Institute of Organic Chemistry; Lodz University of Technology; 90-924 Lodz Poland
| | - Zbigniew J. Kaminski
- Institute of Organic Chemistry; Lodz University of Technology; 90-924 Lodz Poland
| | - Joanna Katarzynska
- Institute of Organic Chemistry; Lodz University of Technology; 90-924 Lodz Poland
| | - Beata Kolesinska
- Institute of Organic Chemistry; Lodz University of Technology; 90-924 Lodz Poland
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18
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Giri R, Manne SR, Dolai G, Paul A, Kalita T, Mandal B. FeCl 3-Mediated Side Chain Modification of Aspartic Acid- and Glutamic Acid-Containing Peptides on a Solid Support. ACS OMEGA 2017; 2:6586-6597. [PMID: 31457256 PMCID: PMC6644899 DOI: 10.1021/acsomega.7b01143] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 09/18/2017] [Indexed: 06/10/2023]
Abstract
An efficient, convenient, and selective Lewis acid-based strategy for on-resin deprotection of the side chain tert-butyl-protected aspartic acid and glutamic acid of a peptide is achieved. The method is mild, cost-effective, and Fmoc chemistry compatible and allows on-resin incorporation of amides, esters, and thioesters in good yield. This method will find wide applicability in peptide and protein modification because it enriches the toolbox of orthogonal protection/deprotection techniques.
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19
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Dexter HL, Williams HEL, Lewis W, Moody CJ. Total Synthesis of the Post-translationally Modified Polyazole Peptide Antibiotic Goadsporin. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201612103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
| | | | - William Lewis
- School of Chemistry; University Park Nottingham NG7 2RD UK
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20
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Dexter HL, Williams HEL, Lewis W, Moody CJ. Total Synthesis of the Post-translationally Modified Polyazole Peptide Antibiotic Goadsporin. Angew Chem Int Ed Engl 2017; 56:3069-3073. [PMID: 28145618 DOI: 10.1002/anie.201612103] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 01/17/2017] [Indexed: 11/06/2022]
Abstract
The structurally unique polyazole antibiotic goadsporin contains six heteroaromatic oxazole and thiazole rings integrated into a linear array of amino acids that also contains two dehydroalanine residues. An efficient total synthesis of goadsporin is reported in which the key steps are the use of rhodium(II)-catalyzed reactions of diazocarbonyl compounds to generate the four oxazole rings, which demonstrates the power of rhodium carbene chemistry in organic chemical synthesis.
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Affiliation(s)
- Hannah L Dexter
- School of Chemistry, University Park, Nottingham, NG7 2RD, UK
| | | | - William Lewis
- School of Chemistry, University Park, Nottingham, NG7 2RD, UK
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21
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Xie Y, Moreno N, Calo VM, Cheng H, Hong PY, Sougrat R, Behzad AR, Tayouo R, Nunes SP. Synthesis of highly porous poly(tert-butyl acrylate)-b-polysulfone-b-poly(tert-butyl acrylate) asymmetric membranes. Polym Chem 2016. [DOI: 10.1039/c6py00215c] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
For the first time, self-assembly and non-solvent induced phase separation was applied to polysulfone-based linear block copolymers, reaching mechanical stability much higher than other block copolymer membranes used in this method, which were mainly based on polystyrene blocks.
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Affiliation(s)
- Yihui Xie
- King Abdullah University of Science Technology (KAUST)
- Biological and Environmental Science and Engineering Division (BESE)
- 23955-6900 Thuwal
- Saudi Arabia
| | - Nicolas Moreno
- King Abdullah University of Science Technology (KAUST)
- Biological and Environmental Science and Engineering Division (BESE)
- 23955-6900 Thuwal
- Saudi Arabia
| | - Victor M. Calo
- King Abdullah University of Science and Technology (KAUST)
- Numerical Porous Media Center (NumPor)
- 23955-6900 Thuwal
- Saudi Arabia
- Curtin University, Applied Geology Department
| | - Hong Cheng
- King Abdullah University of Science Technology (KAUST)
- Water Desalination and Reuse Center
- Biological and Environmental Science and Engineering Division (BESE)
- 23955-6900 Thuwal
- Saudi Arabia
| | - Pei-Ying Hong
- King Abdullah University of Science Technology (KAUST)
- Water Desalination and Reuse Center
- Biological and Environmental Science and Engineering Division (BESE)
- 23955-6900 Thuwal
- Saudi Arabia
| | - Rachid Sougrat
- King Abdullah University of Science Technology (KAUST)
- Imaging and Characterization Core Lab
- 23955-6900 Thuwal
- Saudi Arabia
| | - Ali R. Behzad
- King Abdullah University of Science Technology (KAUST)
- Imaging and Characterization Core Lab
- 23955-6900 Thuwal
- Saudi Arabia
| | - Russell Tayouo
- King Abdullah University of Science Technology (KAUST)
- Biological and Environmental Science and Engineering Division (BESE)
- 23955-6900 Thuwal
- Saudi Arabia
| | - Suzana P. Nunes
- King Abdullah University of Science Technology (KAUST)
- Biological and Environmental Science and Engineering Division (BESE)
- 23955-6900 Thuwal
- Saudi Arabia
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22
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Banerjee S, Soulestin T, Patil Y, Ladmiral V, Ameduri B. Towards new strategies for the synthesis of functional vinylidene fluoride-based copolymers with tunable wettability. Polym Chem 2016. [DOI: 10.1039/c6py00508j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
–COOH functionalized poly(vinylidene fluoride) prepared using water-based non-fluorinated solvents displays tunable wettability suitable for potential application in coating, oil recovery and water purification.
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Affiliation(s)
- Sanjib Banerjee
- Ingénierie et Architectures Macromoléculaires
- Institut Charles Gerhardt
- UMR 5253 CNRS
- UM
- ENSCM
| | - Thibaut Soulestin
- Ingénierie et Architectures Macromoléculaires
- Institut Charles Gerhardt
- UMR 5253 CNRS
- UM
- ENSCM
| | - Yogesh Patil
- Ingénierie et Architectures Macromoléculaires
- Institut Charles Gerhardt
- UMR 5253 CNRS
- UM
- ENSCM
| | - Vincent Ladmiral
- Ingénierie et Architectures Macromoléculaires
- Institut Charles Gerhardt
- UMR 5253 CNRS
- UM
- ENSCM
| | - Bruno Ameduri
- Ingénierie et Architectures Macromoléculaires
- Institut Charles Gerhardt
- UMR 5253 CNRS
- UM
- ENSCM
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23
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Berthet M, Davanier F, Dujardin G, Martinez J, Parrot I. MgI2-Mediated Chemoselective Cleavage of Protecting Groups: An Alternative to Conventional Deprotection Methodologies. Chemistry 2015; 21:11014-6. [DOI: 10.1002/chem.201501799] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Indexed: 01/08/2023]
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24
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Vu HD, Renault J, Roisnel T, Robert C, Jéhan P, Gouault N, Uriac P. Reactivity ofN-Boc-Protected Amino-Ynones in the Presence of Zinc Chloride: Formation of Acetylenic Cyclic Imines and Their Palladium Complexes. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500569] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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25
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Majumdar S, De J, Chakraborty A, Roy D, Maiti DK. A protic ionic liquid catalyzed strategy for selective hydrolytic cleavage of tert-butyloxycarbonyl amine (N-Boc). RSC Adv 2015. [DOI: 10.1039/c4ra13419b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An efficient strategy for selective hydrolytic cleavage of N-tert-butyloxycarbonyl (Boc) group is devised using protic ionic liquid as catalyst. The cleavage reaction proceeded well in the presence of many other labile protecting groups.
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Affiliation(s)
| | - Jhinuk De
- Department of Chemistry
- Tripura University
- India
| | | | - Dipanwita Roy
- Department of Chemistry
- University of Calcutta
- Kolkata 700 009
- India
| | - Dilip K. Maiti
- Department of Chemistry
- University of Calcutta
- Kolkata 700 009
- India
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26
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Rublack N, Müller S. Synthesis of a bifunctional cytidine derivative and its conjugation to RNA for in vitro selection of a cytidine deaminase ribozyme. Beilstein J Org Chem 2014; 10:1906-13. [PMID: 25246949 PMCID: PMC4168874 DOI: 10.3762/bjoc.10.198] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Accepted: 07/30/2014] [Indexed: 11/23/2022] Open
Abstract
Over the past 20 years, the generation of functional RNAs by in vitro selection has become a standard technique. Apart from aptamers for simple binding of defined ligands, also RNAs for catalysis of chemical reactions have been selected. In the latter case, a key step often is the conjugation of one of the two reactants to the library, requiring suitable strategies for terminal or internal RNA functionalization. With the aim of selecting a ribozyme for deamination of cytidine, we have set up a selection scheme involving the attachment of the cytidine acting as deamination substrate to the 3'-terminus of the RNAs in the library, and library immobilization. Here, we report the synthesis of a bifunctional cytidine derivative suitable for conjugation to RNA and linkage of the conjugated library to a streptavidine-coated surface. Successful conjugation of the cytidine derivative to the 3'-terminus of a model RNA is demonstrated.
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Affiliation(s)
- Nico Rublack
- Institut für Biochemie, Ernst-Moritz-Arndt-Universität Greifswald, Felix-Hausdorff-Str. 4, D-17487 Greifswald, Germany
| | - Sabine Müller
- Institut für Biochemie, Ernst-Moritz-Arndt-Universität Greifswald, Felix-Hausdorff-Str. 4, D-17487 Greifswald, Germany
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27
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Liu F, Hu J, Liu G, Lin S, Tu Y, Hou C, Zou H, Yang Y, Wu Y, Mo Y. Emulsion and nanocapsules of ternary graft copolymers. Polym Chem 2014. [DOI: 10.1039/c3py01316b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Claverie C, Ghinet A, Gautret P, Vuong CT, Rigo B. The revisited synthesis of tert-butyl pyroglutamate derivatives. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.06.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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29
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Banerjee S, Wiggins WJ, Geoghegan JL, Anthony CT, Woltering EA, Masterson DS. Novel synthesis of various orthogonally protected Cα-methyllysine analogues and biological evaluation of a Vapreotide analogue containing (S)-α-methyllysine. Org Biomol Chem 2013; 11:6307-19. [DOI: 10.1039/c3ob41282b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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30
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Nelissen J, Nuyts K, De Zotti M, Lavigne R, Lamberigts C, De Borggraeve WM. Total synthesis of Septocylindrin B and C-terminus modified analogues. PLoS One 2012; 7:e51708. [PMID: 23284749 PMCID: PMC3527430 DOI: 10.1371/journal.pone.0051708] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Accepted: 11/05/2012] [Indexed: 11/19/2022] Open
Abstract
The total synthesis is reported of the peptaibol Septocylindrin B which is related to the well documented channel forming peptaibol antibiotic Alamethicin. Several analogues were synthesized with a modified C-terminus, to investigate the SAR of the terminal residue Phaol. All these peptides were tested for their membrane perturbation properties by fluorescent dye leakage assay and for their antibacterial activity.
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Affiliation(s)
- Jo Nelissen
- Molecular Design and Synthesis, Department of Chemistry, University of Leuven, Heverlee, Belgium
| | - Koen Nuyts
- Molecular Design and Synthesis, Department of Chemistry, University of Leuven, Heverlee, Belgium
| | - Marta De Zotti
- Department of Chemistry, University of Padova, Padova, Italy
| | - Rob Lavigne
- Laboratory of Gene Technology, Biosystems Department, University of Leuven, Heverlee, Belgium
| | - Chris Lamberigts
- Laboratory of Gene Technology, Biosystems Department, University of Leuven, Heverlee, Belgium
| | - Wim M. De Borggraeve
- Molecular Design and Synthesis, Department of Chemistry, University of Leuven, Heverlee, Belgium
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31
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Bielski R, Witczak Z. Strategies for Coupling Molecular Units if Subsequent Decoupling Is Required. Chem Rev 2012; 113:2205-43. [DOI: 10.1021/cr200338q] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Roman Bielski
- Value Recovery, Inc., 510 Heron Drive, Suite 301, Bridgeport, New Jersey
08014, United States
| | - Zbigniew Witczak
- Department
of Pharmaceutical
Sciences, Nesbitt School of Pharmacy, Wilkes University, Wilkes-Barre, Pennsylvania 18766, United States
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32
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Itoh H, Matsuoka S, Kreir M, Inoue M. Design, Synthesis and Functional Analysis of Dansylated Polytheonamide Mimic: An Artificial Peptide Ion Channel. J Am Chem Soc 2012; 134:14011-8. [DOI: 10.1021/ja303831a] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Hiroaki Itoh
- Graduate School of Pharmaceutical
Sciences, The University of Tokyo, Hongo,
Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shigeru Matsuoka
- Graduate School of Pharmaceutical
Sciences, The University of Tokyo, Hongo,
Bunkyo-ku, Tokyo 113-0033, Japan
| | - Mohamed Kreir
- Nanion Technologies GmbH, Gabrielenstrasse 9, D-80636 Munich, Germany
| | - Masayuki Inoue
- Graduate School of Pharmaceutical
Sciences, The University of Tokyo, Hongo,
Bunkyo-ku, Tokyo 113-0033, Japan
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33
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Jentzsch KI, Min T, Etcheson JI, Fettinger JC, Franz AK. Silyl Fluoride Electrophiles for the Enantioselective Synthesis of Silylated Pyrrolidine Catalysts. J Org Chem 2011; 76:7065-75. [DOI: 10.1021/jo200991q] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kaleb I. Jentzsch
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Taewoo Min
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Jennifer I. Etcheson
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - James C. Fettinger
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Annaliese K. Franz
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
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34
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Gopinath P, Nilaya S, Muraleedharan KM. Highly Chemoselective Esterification Reactions and Boc/THP/TBDMS Discriminating Deprotections under Samarium(III) Catalysis. Org Lett 2011; 13:1932-5. [DOI: 10.1021/ol200247c] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Surapaneni Nilaya
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600 036, India
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35
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Inoue M, Matsuoka S. Convergent Total Synthesis of the Complex Non-Ribosomal Peptide Polytheonamide B. Isr J Chem 2011. [DOI: 10.1002/ijch.201100002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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36
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Combining the benefits of homogeneous and heterogeneous catalysis with tunable solvents and nearcritical water. Molecules 2010; 15:8400-24. [PMID: 21081860 PMCID: PMC6259171 DOI: 10.3390/molecules15118400] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2010] [Accepted: 11/08/2010] [Indexed: 11/30/2022] Open
Abstract
The greatest advantage of heterogeneous catalysis is the ease of separation, while the disadvantages are often limited activity and selectivity. We report solvents that use tunable phase behavior to achieve homogeneous catalysis with ease of separation. Tunable solvents are homogeneous mixtures of water or polyethylene glycol with organics such as acetonitrile, dioxane, and THF that can be used for homogeneously catalyzed reactions. Modest pressures of a soluble gas, generally CO2, achieve facile post-reaction heterogeneous separation of products from the catalyst. Examples shown here are rhodium-catalyzed hydroformylation of 1-octene and p-methylstyrene and palladium catalyzed C-O coupling to produce o-tolyl-3,5-xylyl ether and 3,5-di-tert-butylphenol. Both were successfully carried out in homogeneous tunable solvents followed by separation efficiencies of up to 99% with CO2 pressures of 3 MPa. Further examples in tunable solvents are enzyme catalyzed reactions such as kinetic resolution of rac-1-phenylethyl acetate and hydrolysis of 2-phenylethyl acetate (2PEA) to 2-phenylethanol (2PE). Another tunable solvent is nearcritical water (NCW), whose unique properties offer advantages for developing sustainable alternatives to traditional processes. Some examples discussed are Friedel-Crafts alkylation and acylation, hydrolysis of benzoate esters, and water-catalyzed deprotection of N-Boc-protected amine compounds.
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37
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Karppanen EJ, Koskinen AMP. The 9-phenyl-9-fluorenyl group for nitrogen protection in enantiospecific synthesis. Molecules 2010; 15:6512-47. [PMID: 20877241 PMCID: PMC6257761 DOI: 10.3390/molecules15096512] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2010] [Revised: 09/13/2010] [Accepted: 09/14/2010] [Indexed: 11/17/2022] Open
Abstract
One of the biggest challenges in asymmetric synthesis is to prevent racemization of enantiopure starting materials. However, at least some of the enantiopurity is lost in most of the existing reactions used in synthetic organic chemistry. This translates into unnecessary material losses. Naturally enantiopure proteinogenic amino acids that can be transformed into many useful intermediates in drug syntheses, for example, are especially vulnerable to this. The phenylfluoren-9-yl (Pf) group, a relatively rarely used protecting group, has proven to be able to prevent racemization in α-amino compounds. This review article showcases the use of Pf-protected amino acid derivatives in enantiospecific synthesis.
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Affiliation(s)
| | - Ari M. P. Koskinen
- Laboratory of Organic Chemistry, Department of Chemistry, Aalto University, School of Science and Technology, PO Box 16100, Kemistintie 1, FI-00076 Aalto, Finland;
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38
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Pedersen PJ, Adolph SK, Subramanian AK, Arouri A, Andresen TL, Mouritsen OG, Madsen R, Madsen MW, Peters GH, Clausen MH. Liposomal Formulation of Retinoids Designed for Enzyme Triggered Release. J Med Chem 2010; 53:3782-92. [DOI: 10.1021/jm100190c] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Palle J. Pedersen
- Department of Chemistry, Technical University of Denmark, Kemitorvet, Building 201 and 207, DK-2800 Kgs. Lyngby, Denmark
| | - Sidsel K. Adolph
- LiPlasome Pharma A/S, Technical University of Denmark, Diplomvej 378, DK-2800 Kgs. Lyngby, Denmark
| | - Arun K. Subramanian
- Department of Chemistry, Technical University of Denmark, Kemitorvet, Building 201 and 207, DK-2800 Kgs. Lyngby, Denmark
| | - Ahmad Arouri
- Department of Physics and Chemistry, MEMPHYS−Center for Biomembrane Physics, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Thomas L. Andresen
- Department of Micro- and Nanotechnology, Technical University of Denmark, DK-4000 Roskilde, Denmark
| | - Ole G. Mouritsen
- Department of Physics and Chemistry, MEMPHYS−Center for Biomembrane Physics, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Robert Madsen
- Department of Chemistry, Technical University of Denmark, Kemitorvet, Building 201 and 207, DK-2800 Kgs. Lyngby, Denmark
| | - Mogens W. Madsen
- LiPlasome Pharma A/S, Technical University of Denmark, Diplomvej 378, DK-2800 Kgs. Lyngby, Denmark
| | - Günther H. Peters
- Department of Chemistry, Technical University of Denmark, Kemitorvet, Building 201 and 207, DK-2800 Kgs. Lyngby, Denmark
| | - Mads H. Clausen
- Department of Chemistry, Technical University of Denmark, Kemitorvet, Building 201 and 207, DK-2800 Kgs. Lyngby, Denmark
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39
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Affiliation(s)
- Albert Isidro-Llobet
- Institute for Research in Biomedicine, Barcelona Science Park, Baldiri Reixac 10, 08028 Barcelona, Spain
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40
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41
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42
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Kim MH, Choi SH, Lee YJ, Lee J, Nahm K, Jeong BS, Park HG, Jew SS. The highly enantioselective phase-transfer catalytic mono-alkylation of malonamic esters. Chem Commun (Camb) 2009:782-4. [DOI: 10.1039/b821468a] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Yang SM, Lagu B, Wilson LJ. Mild and efficient Lewis acid-promoted detritylation in the synthesis of N-hydroxy amides: a concise synthesis of (-)-Cobactin T. J Org Chem 2007; 72:8123-6. [PMID: 17880142 DOI: 10.1021/jo701411d] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient, high-yielding Lewis acid promoted deprotection of O-trityl hydroxylamine derivatives is described. A range of acid-labile protecting groups, such as N-Boc and O-TBS, were tolerated under these mild conditions. The present method is applicable to the synthesis of a broad range of hydroxylamine derivatives, including N-hydroxy amides (hydroxamic acids), N-hydroxy sulfonamides, and N-hydroxy ureas, which often exhibit significant biological activities. An application of this methodology for a concise synthesis of (-)-Cobactin T (18) is also demonstrated.
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Affiliation(s)
- Shyh-Ming Yang
- Johnson & Johnson Pharmaceutical Research and Development, L.L.C. 8 Clarke Drive, Cranbury, New Jersey 08512, USA.
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45
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Abstract
An enantioselective synthetic method for (-)-cis-clavicipitic acid (1) was reported. 1 was obtained in 10 steps (99% ee and 20% overall yield) from 1H-indole-3-carboxylic acid methyl ester (9) via asymmetric phase-transfer catalytic alkylation and diastereoselective Pd(II)-catalyzed intramolecular aminocyclization as key steps.
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Affiliation(s)
- Jin-Mo Ku
- Research Institute of Pharmaceutical Science and College of Pharmacy, Seoul National University, Seoul 151-742, Korea
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46
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Murray AJ, Parsons PJ, Hitchcock P. The combined use of stereoelectronic control and ring closing metathesis for the synthesis of (−)-8-epi-swainsonine. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.03.103] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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47
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Walters KB, Hirt DE. Synthesis and Characterization of a Tertiary Amine Polymer Series from Surface-Grafted Poly(tert-butyl acrylate) via Diamine Reactions. Macromolecules 2007. [DOI: 10.1021/ma0700882] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Keisha B. Walters
- Dave C. Swalm School of Chemical Engineering, Mississippi State University, Mississippi State, Mississippi 39762-9595, and Department of Chemical and Biomolecular Engineering and Center for Advanced Engineering Fibers and Films, Clemson University, Clemson, South Carolina 29634-0909
| | - Douglas E. Hirt
- Dave C. Swalm School of Chemical Engineering, Mississippi State University, Mississippi State, Mississippi 39762-9595, and Department of Chemical and Biomolecular Engineering and Center for Advanced Engineering Fibers and Films, Clemson University, Clemson, South Carolina 29634-0909
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48
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Cadierno V, Gimeno J, Nebra N. A Novel Propargylation/Cycloisomerization Tandem Process Catalyzed by a Ruthenium(II)/Trifluoroacetic Acid System: One-Pot Entry to Fully Substituted Furans from Readily Available Secondary Propargylic Alcohols and 1,3-Dicarbonyl Compounds. Adv Synth Catal 2007. [DOI: 10.1002/adsc.200600366] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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49
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Li B, Berliner M, Buzon R, Chiu CKF, Colgan ST, Kaneko T, Keene N, Kissel W, Le T, Leeman KR, Marquez B, Morris R, Newell L, Wunderwald S, Witt M, Weaver J, Zhang Z, Zhang Z. Aqueous Phosphoric Acid as a Mild Reagent for Deprotection of tert-Butyl Carbamates, Esters, and Ethers. J Org Chem 2006; 71:9045-50. [PMID: 17109528 DOI: 10.1021/jo061377b] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Aqueous phosphoric acid (85 wt %) is an effective, environmentally benign reagent for the deprotection of tert-butyl carbamates, tert-butyl esters, and tert-butyl ethers. The reaction conditions are mild and offer good selectivity in the presence of other acid-sensitive groups, including CBZ carbamates, azetidine, benzyl and methyl esters, TBDMS, and methyl phenyl ethers. The mildness of the reaction is further demonstrated in the synthesis of clarithromycin derivative, in which a tert-butyl ester is removed in the presence of cyclic carbamate, lactone, ketal, acetate ester, and epimerizable methyl ketone functionalities. The reaction preserves the stereochemical integrity of the substrates. The reactions are high yielding, and the workup is convenient.
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Affiliation(s)
- Bryan Li
- Groton Laboratories, Pfizer Global Research and Development, Groton, Connecticut 06340, USA.
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50
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Walters KB, Hirt DE. Grafting of end-functionalized poly(tert-butyl acrylate) to poly(ethylene-co-acrylic acid) film. POLYMER 2006. [DOI: 10.1016/j.polymer.2006.07.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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