1
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Gwak S, Park JY, Cho M, Kwon HJ, Han H. Efficient and Inexpensive Synthesis of 15N-Labeled 2-Azido-1,3-dimethylimidazolinium Salts Using Na 15NO 2 Instead of Na 15NNN. ACS OMEGA 2024; 9:6556-6560. [PMID: 38371833 PMCID: PMC10870284 DOI: 10.1021/acsomega.3c07147] [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: 09/18/2023] [Revised: 11/09/2023] [Accepted: 11/17/2023] [Indexed: 02/20/2024]
Abstract
15N-Labeled azides are important probes for infrared and magnetic resonance spectroscopy and imaging. They can be synthesized by reaction of primary amines with a 15N-labeled diazo-transfer reagent. We present the synthesis of 15N-labeled 2-azido-1,3-dimethylimidazolinium salts 1 as a 15N-labeled diazo-transfer reagent. Nitrosation of 1,3-dimethylimidazolinium-2-yl hydrazine (2) with Na15NO2 under acidic conditions gave 1 as a 1:1 mixture of α- and γ-15N-labeled azides, α- and γ-1, rather than γ-1 alone. The isotopomeric mixture thus obtained was then subjected to the diazo-transfer reaction with primary amines 3 to afford azides 4 as a 1:1 mixture of β-15N-labeled azides β-4 and unlabeled ones 4'. The efficient and inexpensive synthesis of 1 as a 1:1 mixture of α- and γ-1 using Na15NO2 instead of Na15NNN facilitates their wide use as a 15N-labeled diazo-transfer reagent for preparing 15N-labeled azides as molecular probes.
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Affiliation(s)
- Sungduk Gwak
- Department
of Chemistry, Korea University, Seoul 02841, Korea
| | - Jun Young Park
- Department
of Chemistry, Korea University, Seoul 02841, Korea
- Center
for Molecular Spectroscopy and Dynamics, Institute for Basic Science (IBS), Seoul 02841, Korea
| | - Minhaeng Cho
- Department
of Chemistry, Korea University, Seoul 02841, Korea
- Center
for Molecular Spectroscopy and Dynamics, Institute for Basic Science (IBS), Seoul 02841, Korea
| | - Hyeok-Jun Kwon
- Department
of Chemistry, Korea University, Seoul 02841, Korea
| | - Hogyu Han
- Department
of Chemistry, Korea University, Seoul 02841, Korea
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2
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Punjajom K, Sinclair PP, Saha I, Seierstad M, Ameriks MK, García-Reynaga P, Lebold TP, Sarpong R. Convergent synthesis of thiodiazole dioxides from simple ketones and amines through an unusual nitrogen-migration mechanism. Chem Sci 2023; 15:328-335. [PMID: 38131085 PMCID: PMC10731909 DOI: 10.1039/d3sc04478e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 11/25/2023] [Indexed: 12/23/2023] Open
Abstract
We report the modular preparation of dihydro-1,2,5-thiodiazole dioxide heterocycles starting from methyl ketones and primary amines. This one-pot, three-component coupling employs 2,3-dimethylimidazole-1-sulfonyl azide triflate as a coupling reagent and oxidant. The transformation is scalable and various ketones and amines can be used, yielding thiodiazole dioxide products in up to 89% yield. In addition, 15N- and 13C-labeling studies suggest a mechanism involving a 1,2-nitrogen migration. Together with the mechanistic studies, DFT calculations provide insight into the reaction pathway and set the stage for further exploration of the mechanistic nuances of reactions that use sulfamoyl azides. In combination with the demonstrated modularity of the approach reported herein, the derivatization of the thiodiazole dioxide products highlights the potential of this methodology to rapidly access diverse chemical structures.
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Affiliation(s)
| | - Paul P Sinclair
- Department of Chemistry, University of California Berkeley CA 94720 USA
| | - Ishika Saha
- Janssen Research and Development San Diego California 92121 USA
| | - Mark Seierstad
- Janssen Research and Development San Diego California 92121 USA
| | | | | | - Terry P Lebold
- Janssen Research and Development San Diego California 92121 USA
| | - Richmond Sarpong
- Department of Chemistry, University of California Berkeley CA 94720 USA
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3
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Kwon HJ, Gwak S, Park JY, Cho M, Han H. TfNN 15N: A γ- 15N-Labeled Diazo-Transfer Reagent for the Synthesis of β- 15N-Labeled Azides. ACS OMEGA 2022; 7:293-298. [PMID: 35036700 PMCID: PMC8757338 DOI: 10.1021/acsomega.1c04679] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 11/30/2021] [Indexed: 06/14/2023]
Abstract
Azides are infrared (IR) probes that are important for structure and dynamics studies of proteins. However, they often display complex IR spectra owing to Fermi resonances and multiple conformers. Isotopic substitution of azides weakens the Fermi resonance, allowing more accurate IR spectral analysis. Site-specifically 15N-labeled aromatic azides, but not aliphatic azides, are synthesized through nitrosation. Both 15N-labeled aromatic and aliphatic azides are synthesized through nucleophilic substitution or diazo-transfer reaction but as an isotopomeric mixture. We present the synthesis of TfNN15N, a γ-15N-labeled diazo-transfer reagent, and its use to prepare β-15N-labeled aliphatic as well as aromatic azides.
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Affiliation(s)
- Hyeok-Jun Kwon
- Department
of Chemistry, Korea University, Seoul 02841, Korea
| | - Sungduk Gwak
- Department
of Chemistry, Korea University, Seoul 02841, Korea
| | - Jun Young Park
- Department
of Chemistry, Korea University, Seoul 02841, Korea
- Center
for Molecular Spectroscopy and Dynamics, Institute for Basic Science (IBS), Seoul 02841, Korea
| | - Minhaeng Cho
- Department
of Chemistry, Korea University, Seoul 02841, Korea
- Center
for Molecular Spectroscopy and Dynamics, Institute for Basic Science (IBS), Seoul 02841, Korea
| | - Hogyu Han
- Department
of Chemistry, Korea University, Seoul 02841, Korea
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4
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Gao P, Chen H, Bai ZJ, Zhang S, Zhao MN, Yang D, Li Y, Zhang J, Wang X. Iodine-Mediated Cyclization of Enamines to Imidazole-4-Carboxylic Derivatives with Sequential Removal of Nitrogen Atoms from TMSN 3. J Org Chem 2021; 86:10492-10500. [PMID: 34308649 DOI: 10.1021/acs.joc.1c01145] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
An iodine-mediated oxidative [4+1] cyclization of enamines with TMSN3 for the synthesis of 2,5-disubstituted imidazole-4-carboxylic derivatives has been developed. The mechanistic studies revealed that the reaction proceeds through a sequential removal of two nitrogen atoms from TMSN3. The synthetic utility was further demonstrated with a gram-scale reaction and various derivatization transformations of the products.
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Affiliation(s)
- Peng Gao
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013, P. R. China.,Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Huaijuan Chen
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013, P. R. China
| | - Zi-Jing Bai
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013, P. R. China
| | - Sheng Zhang
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013, P. R. China
| | - Mi-Na Zhao
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013, P. R. China
| | - Desuo Yang
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013, P. R. China
| | - Yingchun Li
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013, P. R. China
| | - Jiangwei Zhang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, China
| | - Xiaomei Wang
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013, P. R. China
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5
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Geng J, Zhang Y, Gao Q, Neumann K, Dong H, Porter H, Potter M, Ren H, Argyle D, Bradley M. Switching on prodrugs using radiotherapy. Nat Chem 2021; 13:805-810. [PMID: 34112990 PMCID: PMC7611443 DOI: 10.1038/s41557-021-00711-4] [Citation(s) in RCA: 72] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 04/22/2021] [Indexed: 02/05/2023]
Abstract
Chemotherapy is a powerful tool in the armoury against cancer, but it is fraught with problems due to its global systemic toxicity. Here we report the proof of concept of a chemistry-based strategy, whereby gamma/X-ray irradiation mediates the activation of a cancer prodrug, thereby enabling simultaneous chemo-radiotherapy with radiotherapy locally activating a prodrug. In an initial demonstration, we show the activation of a fluorescent probe using this approach. Expanding on this, we show how sulfonyl azide- and phenyl azide-caged prodrugs of pazopanib and doxorubicin can be liberated using clinically relevant doses of ionizing radiation. This strategy is different to conventional chemo-radiotherapy radiation, where chemo-sensitization of the cancer takes place so that subsequent radiotherapy is more effective. This approach could enable site-directed chemotherapy, rather than systemic chemotherapy, with 'real time' drug decaging at the tumour site. As such, it opens up a new era in targeted and directed chemotherapy.
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Affiliation(s)
- Jin Geng
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, UK.
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.
| | - Yichuan Zhang
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, UK
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Quan Gao
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Kevin Neumann
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, UK
| | - Hua Dong
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, UK
| | - Hamish Porter
- The Royal (Dick) School of Veterinary Studies and Roslin Institute, University of Edinburgh, Edinburgh, UK
| | - Mark Potter
- Department of Surgery, Western General Hospital, Edinburgh, UK
| | - Hua Ren
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital and Shen Zhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, China
| | - David Argyle
- The Royal (Dick) School of Veterinary Studies and Roslin Institute, University of Edinburgh, Edinburgh, UK
| | - Mark Bradley
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, UK.
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6
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Widyan K. An Improved Synthesis of Sulfonyl Azides in Ionic Liquids. ORG PREP PROCED INT 2021. [DOI: 10.1080/00304948.2021.1933333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Khalid Widyan
- Department of Chemistry, Tafila Technical University, Tafila, Jordan
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7
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Dumas A, Li D, Pinet S, Corona-Becerril D, Hanessian S. Divergent reactivities of 2-pyridyl sulfonate esters. Exceptionally mild access to alkyl bromides and 2-substituted pyridines. CAN J CHEM 2021. [DOI: 10.1139/cjc-2020-0510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A series of 2- and 3-pyridyl sulfonate and tosylate esters of primary and secondary alcohols were synthesized and evaluated in the bromination reaction with MgBr2·Et2O. The greater coordinating ability of the 2-pyridyl sulfonate esters accounted for its observed superior reactivity and selectivity. Reaction of neopentyl and phenyl 2-pyridyl sulfonates with a variety of aryl and heteroaryl Li reagents led to 2-substituted pyridines at temperatures as low as −78 °C via an SNAr process. Mechanistic considerations are discussed.
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Affiliation(s)
- Adrien Dumas
- Department of Chemistry, Université de Montréal, P.O. Box 6128, Station Centre-Ville, Montréal, QC, Canada
- Department of Chemistry, Université de Montréal, P.O. Box 6128, Station Centre-Ville, Montréal, QC, Canada
| | - Da Li
- Department of Chemistry, Université de Montréal, P.O. Box 6128, Station Centre-Ville, Montréal, QC, Canada
- Department of Chemistry, Université de Montréal, P.O. Box 6128, Station Centre-Ville, Montréal, QC, Canada
| | - Sonia Pinet
- Department of Chemistry, Université de Montréal, P.O. Box 6128, Station Centre-Ville, Montréal, QC, Canada
- Department of Chemistry, Université de Montréal, P.O. Box 6128, Station Centre-Ville, Montréal, QC, Canada
| | - David Corona-Becerril
- Department of Chemistry, Université de Montréal, P.O. Box 6128, Station Centre-Ville, Montréal, QC, Canada
- Department of Chemistry, Université de Montréal, P.O. Box 6128, Station Centre-Ville, Montréal, QC, Canada
| | - Stephen Hanessian
- Department of Chemistry, Université de Montréal, P.O. Box 6128, Station Centre-Ville, Montréal, QC, Canada
- Department of Chemistry, Université de Montréal, P.O. Box 6128, Station Centre-Ville, Montréal, QC, Canada
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8
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Affiliation(s)
- Tiziano De Ventura
- Department of Chemistry and Pharmaceutical Sciences University of Ferrara Via Fossato di Mortara 17 44121 Ferrara Italy
| | - Vinicio Zanirato
- Department of Chemistry and Pharmaceutical Sciences University of Ferrara Via Fossato di Mortara 17 44121 Ferrara Italy
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9
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Modular click chemistry libraries for functional screens using a diazotizing reagent. Nature 2019; 574:86-89. [PMID: 31578481 DOI: 10.1038/s41586-019-1589-1] [Citation(s) in RCA: 166] [Impact Index Per Article: 33.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 08/08/2019] [Indexed: 12/20/2022]
Abstract
Click chemistry is a concept in which modular synthesis is used to rapidly find new molecules with desirable properties1. Copper(I)-catalysed azide-alkyne cycloaddition (CuAAC) triazole annulation and sulfur(VI) fluoride exchange (SuFEx) catalysis are widely regarded as click reactions2-4, providing rapid access to their products in yields approaching 100% while being largely orthogonal to other reactions. However, in the case of CuAAC reactions, the availability of azide reagents is limited owing to their potential toxicity and the risk of explosion involved in their preparation. Here we report another reaction to add to the click reaction family: the formation of azides from primary amines, one of the most abundant functional groups5. The reaction uses just one equivalent of a simple diazotizing species, fluorosulfuryl azide6-11 (FSO2N3), and enables the preparation of over 1,200 azides on 96-well plates in a safe and practical manner. This reliable transformation is a powerful tool for the CuAAC triazole annulation, the most widely used click reaction at present. This method greatly expands the number of accessible azides and 1,2,3-triazoles and, given the ubiquity of the CuAAC reaction, it should find application in organic synthesis, medicinal chemistry, chemical biology and materials science.
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10
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Schembri LS, Eriksson J, Odell LR. Palladium(0)-Catalyzed Carbonylative Synthesis of N-Acylsulfonamides via Regioselective Acylation. J Org Chem 2019; 84:6970-6981. [DOI: 10.1021/acs.joc.9b00740] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Luke S. Schembri
- Department of Medicinal Chemistry, Uppsala Biomedical Center, Uppsala University, P. O. Box 574, Uppsala SE-751 23, Sweden
| | - Jonas Eriksson
- Department of Medicinal Chemistry, Uppsala Biomedical Center, Uppsala University, P. O. Box 574, Uppsala SE-751 23, Sweden
| | - Luke R. Odell
- Department of Medicinal Chemistry, Uppsala Biomedical Center, Uppsala University, P. O. Box 574, Uppsala SE-751 23, Sweden
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11
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He X, Zhou Y, Shang Y, Yang C, Zuo Y. Synthesis of 2-Arylimino-6,7-dihydrobenzo[ d][1,3]oxathiol-4(5 H)-ones via Rh 2(OAc) 4-Catalyzed Reactions of Cyclic 2-Diazo-1,3-diketones with Aryl Isothiocyanates. ACS OMEGA 2016; 1:1277-1283. [PMID: 31457195 PMCID: PMC6640800 DOI: 10.1021/acsomega.6b00295] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Accepted: 12/07/2016] [Indexed: 06/10/2023]
Abstract
A convenient and efficient synthesis of 2-arylimino-6,7-dihydrobenzo[d][1,3]oxathiol-4(5H)-ones was developed via a Rh2(OAc)4-catalyzed reaction of cyclic 2-diazo-1,3-diketones and aryl isothiocyanates in acetone at 60 °C. This reaction uses readily available stable cyclic 2-diazo-1,3-diketones as a starting material and generates the desired products in good to excellent yields (78-93%). The reaction proceeds under mild reaction conditions, produces only N2 as the byproduct, and features a broad substrate scope. A plausible mechanism for this reaction is also discussed.
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12
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Stevens MY, Chow SY, Estrada S, Eriksson J, Asplund V, Orlova A, Mitran B, Antoni G, Larhed M, Åberg O, Odell LR. Synthesis of 11C-labeled Sulfonyl Carbamates through a Multicomponent Reaction Employing Sulfonyl Azides, Alcohols, and [ 11C]CO. ChemistryOpen 2016; 5:566-573. [PMID: 28032026 PMCID: PMC5167284 DOI: 10.1002/open.201600091] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Indexed: 12/13/2022] Open
Abstract
We describe the development of a new methodology focusing on 11C-labeling of sulfonyl carbamates in a multicomponent reaction comprised of a sulfonyl azide, an alkyl alcohol, and [11C]CO. A number of 11C-labeled sulfonyl carbamates were synthesized and isolated, and the developed methodology was then applied in the preparation of a biologically active molecule. The target compound was obtained in 24±10 % isolated radiochemical yield and was evaluated for binding properties in a tumor cell assay; in vivo biodistribution and imaging studies were also performed. This represents the first successful radiolabeling of a non-peptide angiotensin II receptor subtype 2 agonist, C21, currently in clinical trials for the treatment of idiopathic pulmonary fibrosis.
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Affiliation(s)
- Marc Y. Stevens
- Department of Medicinal ChemistryDivision of Organic Pharmaceutical ChemistryUppsala University75123UppsalaSweden
| | - Shiao Y. Chow
- Department of Medicinal ChemistryDivision of Organic Pharmaceutical ChemistryUppsala University75123UppsalaSweden
| | - Sergio Estrada
- Department of Medicinal ChemistryPreclinical PET PlatformUppsala University75183UppsalaSweden
| | - Jonas Eriksson
- Department of Medicinal ChemistryDivision of Molecular ImagingUppsala University75183UppsalaSweden
| | - Veronika Asplund
- Department of Medicinal ChemistryPreclinical PET PlatformUppsala University75183UppsalaSweden
| | - Anna Orlova
- Department of Medicinal ChemistryDivision of Molecular ImagingUppsala University75183UppsalaSweden
| | - Bogdan Mitran
- Department of Medicinal ChemistryDivision of Molecular ImagingUppsala University75183UppsalaSweden
| | - Gunnar Antoni
- Department of Medicinal ChemistryDivision of Molecular ImagingUppsala University75183UppsalaSweden
| | - Mats Larhed
- Department of Medicinal ChemistryScience for Life LaboratoryUppsala University75123UppsalaSweden
| | - Ola Åberg
- Department of Medicinal ChemistryPreclinical PET PlatformUppsala University75183UppsalaSweden
| | - Luke R. Odell
- Department of Medicinal ChemistryDivision of Organic Pharmaceutical ChemistryUppsala University75123UppsalaSweden
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13
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Potter GT, Jayson GC, Miller GJ, Gardiner JM. An Updated Synthesis of the Diazo-Transfer Reagent Imidazole-1-sulfonyl Azide Hydrogen Sulfate. J Org Chem 2016; 81:3443-6. [DOI: 10.1021/acs.joc.6b00177] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Garrett T. Potter
- Manchester
Institute of Biotechnology and School of Chemistry, The University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K
| | - Gordon C. Jayson
- Institute
of Cancer Sciences, Faculty of Medical and Human Sciences, The University of Manchester, Manchester M20 4BX, U.K
| | - Gavin J. Miller
- Manchester
Institute of Biotechnology and School of Chemistry, The University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K
| | - John M. Gardiner
- Manchester
Institute of Biotechnology and School of Chemistry, The University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K
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14
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Chow SY, Stevens MY, Odell LR. Sulfonyl Azides as Precursors in Ligand-Free Palladium-Catalyzed Synthesis of Sulfonyl Carbamates and Sulfonyl Ureas and Synthesis of Sulfonamides. J Org Chem 2016; 81:2681-91. [DOI: 10.1021/acs.joc.5b02755] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Shiao Y. Chow
- Organic
Pharmaceutical Chemistry,
Department of Medicinal Chemistry, Uppsala Biomedical Center, Uppsala University, P.O.
Box 574, SE-751 23 Uppsala, Sweden
| | - Marc Y. Stevens
- Organic
Pharmaceutical Chemistry,
Department of Medicinal Chemistry, Uppsala Biomedical Center, Uppsala University, P.O.
Box 574, SE-751 23 Uppsala, Sweden
| | - Luke R. Odell
- Organic
Pharmaceutical Chemistry,
Department of Medicinal Chemistry, Uppsala Biomedical Center, Uppsala University, P.O.
Box 574, SE-751 23 Uppsala, Sweden
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15
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Shen MH, Xu K, Sun CH, Xu HD. The Reaction of 2,3-Dimethylimidazole-1-sulfonyl Azide Triflate with 3-Substituted Indoles: Reactivity and Scope. Org Lett 2015; 17:3654-7. [DOI: 10.1021/acs.orglett.5b01464] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mei-Hua Shen
- Changzhou University, School of Pharmaceutical Engineering
and Life Science, No.
1 Middle Gehu Road, Changzhou, Jiangsu Province 213164, China
| | - Ke Xu
- Changzhou University, School of Pharmaceutical Engineering
and Life Science, No.
1 Middle Gehu Road, Changzhou, Jiangsu Province 213164, China
| | - Chu-Han Sun
- Changzhou University, School of Pharmaceutical Engineering
and Life Science, No.
1 Middle Gehu Road, Changzhou, Jiangsu Province 213164, China
| | - Hua-Dong Xu
- Changzhou University, School of Pharmaceutical Engineering
and Life Science, No.
1 Middle Gehu Road, Changzhou, Jiangsu Province 213164, China
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16
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17
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Kakuchi R. Metal-Catalyzed Multicomponent Reactions for the Synthesis of Polymers. MULTI-COMPONENT AND SEQUENTIAL REACTIONS IN POLYMER SYNTHESIS 2014. [DOI: 10.1007/12_2014_300] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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