1
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Sawahata R, Takagi Y, Kitamura Y. Azidomethylation of Nucleobases and Related N-Heterocycles, Benzazoles, and Bis(arene)sulfonimides Using Azidomethyl Esters with Silyl Triflates. Org Lett 2024; 26:3806-3809. [PMID: 38662603 DOI: 10.1021/acs.orglett.4c00938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2024]
Abstract
An efficient method for the azidomethylation of amines using azidomethyl esters with silyl triflates is described. This protocol enables the azidomethylation of various amines that can be activated with silyl groups, including nucleobases.
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Affiliation(s)
- Ryoga Sawahata
- Department of Life Science and Chemistry, Graduate School of Natural Science and Technology, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Yuga Takagi
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Yoshiaki Kitamura
- Department of Life Science and Chemistry, Graduate School of Natural Science and Technology, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
- Center for One Medicine Innovative Translational Research (COMIT), Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
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2
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Kitamura M, Ohtsuka K, Eto T, Tsuzaki M, Wada M, Shimooka H, Okauchi T. Diazo-Transfer Reaction of Nonactivated Ketones with 2-Azido-1,3-bis(2,6-diisopropylphenyl)imidazolium Hexafluorophosphate (IPrAP). J Org Chem 2023; 88:15494-15500. [PMID: 37874046 DOI: 10.1021/acs.joc.3c01743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
The diazo-transfer reaction of nonactivated ketone under mild reaction conditions was developed. Various nonactivated ketones such as aryl methyl ketones, sec-alkyl methyl ketones, and cyclic ketones were transformed into their corresponding α-diazoketones in one step by treating 2-azido-1,3-bis(2,6-diisopropylphenyl)imidazolium hexafluorophosphate (IPrAP) in the presence of iPr2NH in ethylene glycol. In the reaction of IPrAP with prim-alkyl methyl ketone and prim-alkyl aryl ketones, migratory amidation proceeded under the reaction conditions to afford the corresponding amides.
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Affiliation(s)
- Mitsuru Kitamura
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
| | - Kazuki Ohtsuka
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
| | - Takashi Eto
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
| | - Masato Tsuzaki
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
| | - Mayuko Wada
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
| | - Hirokazu Shimooka
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
| | - Tatsuo Okauchi
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
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3
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Wong CHA, Hubert JG, Sparrow KJ, Harris LD, Tyler PC, Brimble MA. Expedient synthesis of imino-C-nucleoside fleximers featuring a one-pot procedure to prepare aryl triazoles. Org Biomol Chem 2023; 21:6134-6140. [PMID: 37462413 DOI: 10.1039/d3ob00956d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
Nucleoside analogues such as the antiviral agents galidesivir and ribavirin are of synthetic interest. This work reports a "one-pot" preparation of similar fleximers using a bifunctional copper catalyst that generates the aryl azide in situ, which is captured by a terminal alkyne to effect triazole formation.
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Affiliation(s)
- C H Andy Wong
- School of Chemical Sciences, University of Auckland, 23 Symonds St., Auckland 1010, New Zealand.
| | - Jonathan G Hubert
- School of Chemical Sciences, University of Auckland, 23 Symonds St., Auckland 1010, New Zealand.
| | - Kevin J Sparrow
- Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Rd, Lower Hutt 5040, New Zealand
| | - Lawrence D Harris
- Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Rd, Lower Hutt 5040, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, Private Bag 92019, Auckland 1010, New Zealand
| | - Peter C Tyler
- Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Rd, Lower Hutt 5040, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, University of Auckland, 23 Symonds St., Auckland 1010, New Zealand.
- Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, Private Bag 92019, Auckland 1010, New Zealand
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4
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Premsagar Miriyala V, Raj Thommandru P, Kashanna J, Govinda V, Ravi G, Kishore R. Design, Synthesis and Cytotoxicity of New Coumarin-1,2,3-triazole Derivatives: Evaluation of Anticancer Activity and Molecular Docking Studies. Chem Biodivers 2023; 20:e202300269. [PMID: 37204157 DOI: 10.1002/cbdv.202300269] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 05/16/2023] [Accepted: 05/18/2023] [Indexed: 05/20/2023]
Abstract
A library of new coumarin-1,2,3-triazole hybrids 7a-l were synthesized from 4-(diethylamino)-2-hydroxybenzaldehyde precursor through a series of reactions including Vilsmeier-Haack reaction and condensation reaction to achieve key intermediate oxime and further performed click reaction by using different aromatic azides. We screened all molecules in silico against crystal structure of Serine/threonine-protein kinase 24 (MST3), based on these results all molecules were screened for their cytotoxicity against human breast cancer MCF-7 and lung cancer A-549 cell lines. Compound 7 b (p-bromo) showed best activity against both cell lines MCF-7 and A-549 with IC50 value of 29.32 and 21.03 μM, respectively, in comparison to Doxorubicin corresponding IC50 value of 28.76 and 20.82 μM. Another compound 7 f (o-methoxy) also indicated good activity against both cell lines with IC50 value of 29.26 and 22.41 μM. The toxicity of all compounds tested against normal HEK-293 cell lines have not shown any adverse effects.
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Affiliation(s)
- Victor Premsagar Miriyala
- Department of Chemistry, School of Science, GITAM (Deemed to be University), Visakhapatnam, 530045, India
| | - Prakash Raj Thommandru
- Department of Chemistry, School of Science, GITAM (Deemed to be University), Visakhapatnam, 530045, India
| | - Jajula Kashanna
- Department of Chemistry, Rajiv Gandhi University of Knowledge Technologies-Basar, Nirmal, 504107, India
| | - Varadhi Govinda
- Department of Chemistry, Gayatri Vidya Parishad College, Visakhapatnam, 530045, India
| | - Guguloth Ravi
- Department of Chemistry, University College of Science, Osmania University, Hyderabad, Telangana-500007, India
| | - Ravada Kishore
- Department of Chemistry, School of Science, GITAM (Deemed to be University), Visakhapatnam, 530045, India
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5
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Vasilyeva SV, Baranovskaya EE, Dyudeeva ES, Lomzov AA, Pyshnyi DV. Synthesis of Oligonucleotides Carrying Inter-nucleotide N-(Benzoazole)-phosphoramide Moieties. ACS OMEGA 2023; 8:1556-1566. [PMID: 36643477 PMCID: PMC9835791 DOI: 10.1021/acsomega.2c07083] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 12/12/2022] [Indexed: 06/17/2023]
Abstract
In this work, we present new oligonucleotide derivatives containing inter-nucleotide N-benzimidazole, N-benzoxazole, N-benzothiazole, and 1,3-dimethyl-N-benzimidazole (benzoazoles) phosphoramide groups. These modifications were introduced via the Staudinger reaction with appropriate azides during standard automated solid-phase oligonucleotide synthesis. The principal structural difference between the new azido modifiers and those already known is that they are bulk heterocyclic structures, similar to purine nucleoside bases. Modified oligonucleotides with one and two modifications at different positions and multiple modified heteronucleotide sequences were obtained with high yields. The possibility of multiple modifications in the process of automatic DNA synthesis is fundamental and critical for further application of our oligonucleotide derivatives. Initial studies on the properties of new oligonucleotides were carried out. The stability of the oligodeoxyribonucleotide duplex containing phosphoramide groups of N-benzoazoles with complementary DNA or RNA is slightly lower than that of native complexes.
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6
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Fujiwara K, Kurose T, Yoshikawa K, Shang R, Kubo K, Kume S, Mizuta T. Improved Syntheses of Doubly Naphthalene-Bridged Diphosphine and its Diiminodiphosphorane Derivatives Linking Two Cu(I) Centers. Polyhedron 2023. [DOI: 10.1016/j.poly.2023.116306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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7
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Kurosawa T, Tega Y, Uchida Y, Higuchi K, Tabata H, Sumiyoshi T, Kubo Y, Terasaki T, Deguchi Y. Proteomics-Based Transporter Identification by the PICK Method: Involvement of TM7SF3 and LHFPL6 in Proton-Coupled Organic Cation Antiport at the Blood-Brain Barrier. Pharmaceutics 2022; 14:pharmaceutics14081683. [PMID: 36015309 PMCID: PMC9413594 DOI: 10.3390/pharmaceutics14081683] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 08/07/2022] [Accepted: 08/09/2022] [Indexed: 01/20/2023] Open
Abstract
A proton-coupled organic cation (H+/OC) antiporter working at the blood–brain barrier (BBB) in humans and rodents is thought to be a promising candidate for the efficient delivery of cationic drugs to the brain. Therefore, it is important to identify the molecular entity that exhibits this activity. Here, for this purpose, we established the Proteomics-based Identification of transporter by Crosslinking substrate in Keyhole (PICK) method, which combines photo-affinity labeling with comprehensive proteomics analysis using SWATH-MS. Using preselected criteria, the PICK method generated sixteen candidate proteins. From these, knockdown screening in hCMEC/D3 cells, an in vitro BBB model, identified two proteins, TM7SF3 and LHFPL6, as candidates for the H+/OC antiporter. We synthesized a novel H+/OC antiporter substrate for functional analysis of TM7SF3 and LHFPL6 in hCMEC/D3 cells and HEK293 cells. The results suggested that both TM7SF3 and LHFPL6 are components of the H+/OC antiporter.
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Affiliation(s)
- Toshiki Kurosawa
- Laboratory of Drug Disposition and Pharmacokinetics, Faculty of Pharma-Sciences, Teikyo University, Tokyo 173-8605, Japan
| | - Yuma Tega
- Laboratory of Drug Disposition and Pharmacokinetics, Faculty of Pharma-Sciences, Teikyo University, Tokyo 173-8605, Japan
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536, USA
| | - Yasuo Uchida
- Division of Membrane Transport and Drug Targeting, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
- Correspondence: (Y.U.); (Y.D.); Tel.: +81-22-795-6832 (Y.U.); +81-3-3964-8246 (Y.D.)
| | - Kei Higuchi
- Department of Biopharmaceutics, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Tokyo 192-0392, Japan
| | - Hidetsugu Tabata
- Laboratory of Medicinal Chemistry, Faculty of Pharma-Sciences, Teikyo University, Tokyo 173-8605, Japan
| | - Takaaki Sumiyoshi
- Department of Life Science and Biotechnology, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Osaka 564-8680, Japan
| | - Yoshiyuki Kubo
- Laboratory of Drug Disposition and Pharmacokinetics, Faculty of Pharma-Sciences, Teikyo University, Tokyo 173-8605, Japan
| | - Tetsuya Terasaki
- Division of Membrane Transport and Drug Targeting, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Yoshiharu Deguchi
- Laboratory of Drug Disposition and Pharmacokinetics, Faculty of Pharma-Sciences, Teikyo University, Tokyo 173-8605, Japan
- Correspondence: (Y.U.); (Y.D.); Tel.: +81-22-795-6832 (Y.U.); +81-3-3964-8246 (Y.D.)
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8
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Maeda H, Nishimura T, Haketa Y, Tanaka H, Fujita M, Yasuda N. Ion-Pairing Assemblies of Anion-Responsive π-Electronic Systems Bearing Triazole Moieties Introduced by Click Chemistry. J Org Chem 2022; 87:7818-7825. [PMID: 35671353 DOI: 10.1021/acs.joc.2c00463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this study, the diverse derivatives of dipyrrolyldiketone boron complexes as anion-responsive π-electronic systems were synthesized via the Huisgen cycloaddition of an ethynyl-substituted anion receptor and azide derivatives. The obtained triazole-substituted anion receptors showed effective anion-binding behaviors and ion-pairing assemblies comprising receptor-anion complexes and countercations. Solid-state ion-pairing structures were modulated according to the introduced azide moieties along with coexisting bulky and π-electronic cations.
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Affiliation(s)
- Hiromitsu Maeda
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu 525-8577, Japan
| | - Tadahiro Nishimura
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu 525-8577, Japan
| | - Yohei Haketa
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu 525-8577, Japan
| | - Hiroki Tanaka
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu 525-8577, Japan
| | - Masaki Fujita
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu 525-8577, Japan
| | - Nobuhiro Yasuda
- Diffraction and Scattering Division, Japan Synchrotron Radiation Research Institute, Sayo 679-5198, Japan
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9
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Fairbanks AJ. Applications of Shoda's reagent (DMC) and analogues for activation of the anomeric centre of unprotected carbohydrates. Carbohydr Res 2020; 499:108197. [PMID: 33256953 DOI: 10.1016/j.carres.2020.108197] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 11/10/2020] [Accepted: 11/11/2020] [Indexed: 10/23/2022]
Abstract
2-Chloro-1,3-dimethylimidazolinium chloride (DMC, herein also referred to as Shoda's reagent) and its derivatives are useful for numerous synthetic transformations in which the anomeric centre of unprotected reducing sugars is selectively activated in aqueous solution. As such unprotected sugars can undergo anomeric substitution with a range of added nucleophiles, providing highly efficient routes to a range of glycosides and glycoconjugates without the need for traditional protecting group manipulations. This mini-review summarizes the development of DMC and some of its derivatives/analogues, and highlights recent applications for protecting group-free synthesis.
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Affiliation(s)
- Antony J Fairbanks
- School of Physical and Chemical Sciences, University of Canterbury, Private Bag 4800, Christchurch, 8140, New Zealand.
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10
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Sumimoto S. Sulfur (VI) Fluoride Exchange (SuFEx) and Azide Formation Reactions Using a Fluorosulfuryl Group. J SYN ORG CHEM JPN 2020. [DOI: 10.5059/yukigoseikyokaishi.78.979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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11
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Clerc A, Bénéteau V, Pale P, Chassaing S. Chan‐Lam‐type Azidation and One‐Pot CuAAC under Cu
I
‐Zeolite Catalysis. ChemCatChem 2020. [DOI: 10.1002/cctc.201902058] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Arnaud Clerc
- Laboratoire de Synthèse Réactivité Organiques & Catalyse (LASYROC) Institut de Chimie, CNRS-UMR 7177Université de Strasbourg 4 rue Blaise Pascal 67070 Strasbourg France
| | - Valérie Bénéteau
- Laboratoire de Synthèse Réactivité Organiques & Catalyse (LASYROC) Institut de Chimie, CNRS-UMR 7177Université de Strasbourg 4 rue Blaise Pascal 67070 Strasbourg France
| | - Patrick Pale
- Laboratoire de Synthèse Réactivité Organiques & Catalyse (LASYROC) Institut de Chimie, CNRS-UMR 7177Université de Strasbourg 4 rue Blaise Pascal 67070 Strasbourg France
| | - Stefan Chassaing
- Laboratoire de Synthèse Réactivité Organiques & Catalyse (LASYROC) Institut de Chimie, CNRS-UMR 7177Université de Strasbourg 4 rue Blaise Pascal 67070 Strasbourg France
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12
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13
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Albakour M, Zeyrek Ongun M, Topal SZ, Gürek AG. Zn(ii) phthalocyanines tetra substituted by aryl and alkyl azides: design, synthesis and optical detection of H2S. NEW J CHEM 2020. [DOI: 10.1039/d0nj00383b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Experimental examination of two novel Zn(ii)-phthalocyanines having aryl and alkyl azide functional groups at the peripheral positions that have been designed/synthesized for hydrogen sulfide (H2S) sensing purposes.
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Affiliation(s)
- Mohamad Albakour
- Department of Chemisytry
- Gebze Technical University
- 41400 Gebze
- Turkey
| | - Merve Zeyrek Ongun
- Chemistry Technology Program
- Izmir Vocational High School
- Dokuz Eylul University
- Izmir
- Turkey
| | | | - Ayşe Gül Gürek
- Department of Chemisytry
- Gebze Technical University
- 41400 Gebze
- Turkey
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14
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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: 174] [Impact Index Per Article: 34.8] [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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15
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Kitamura M, Murakami K, Koga T, Eto T, Ishikawa A, Shimooka H, Okauchi T. Direct Azidation of Phenols. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900967] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mitsuru Kitamura
- Kyushu Institute of Technology; Department Applied Chemistry; 1-1 Sensuicho 804-8550 Tobata, Kitakyushu Japan
| | - Kento Murakami
- Kyushu Institute of Technology; Department Applied Chemistry; 1-1 Sensuicho 804-8550 Tobata, Kitakyushu Japan
| | - Tatsuya Koga
- Kyushu Institute of Technology; Department Applied Chemistry; 1-1 Sensuicho 804-8550 Tobata, Kitakyushu Japan
| | - Takashi Eto
- Kyushu Institute of Technology; Department Applied Chemistry; 1-1 Sensuicho 804-8550 Tobata, Kitakyushu Japan
| | - Akihiro Ishikawa
- Kyushu Institute of Technology; Department Applied Chemistry; 1-1 Sensuicho 804-8550 Tobata, Kitakyushu Japan
| | - Hirokazu Shimooka
- Kyushu Institute of Technology; Department Applied Chemistry; 1-1 Sensuicho 804-8550 Tobata, Kitakyushu Japan
| | - Tatsuo Okauchi
- Kyushu Institute of Technology; Department Applied Chemistry; 1-1 Sensuicho 804-8550 Tobata, Kitakyushu Japan
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16
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Regier J, Maillet R, Bolshan Y. A Direct Brønsted Acid-Catalyzed Azidation of Benzhydrols and Carbohydrates. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900104] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jeffery Regier
- Faculty of Science; University of Ontario Institute of Technology; 2000 Simcoe Street North Oshawa Ontario L1H 7K Canada
| | - Robert Maillet
- Faculty of Medicine; University of Ottawa; 451 Smyth Rd. Ottawa Ontario K1H 8M5 Canada
| | - Yuri Bolshan
- Faculty of Science; University of Ontario Institute of Technology; 2000 Simcoe Street North Oshawa Ontario L1H 7K Canada
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17
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Arunachalam PN, Kuppusamy P, Ganesan S, Krishnamoorthy S, Nimje RY, Jarugu LB, Kanikahalli Chikkananjaiah N, Anki Reddy C, Anjanappa P, Botlagunta M, Vanteru S, Maddala N, Shankar M, Nair S, Hynes J, Santella JB, Carter PH, Rampulla R, Vetrichelvan M, Gupta A, Gupta AK, Mathur A. Development of a Scalable Synthesis for the Potent Kinase Inhibitor BMS-986236; 1-(5-(4-(3-Hydroxy-3-methylbutyl)-1H-1,2,3-triazol-1-yl)-4-(isopropylamino)pyridin-2-yl)-1H-pyrazolo[3,4-b]pyridine-5-carbonitrile. Org Process Res Dev 2019. [DOI: 10.1021/acs.oprd.9b00023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Pirama Nayagam Arunachalam
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb Research Center, Biocon Park, Bommasandra IV Phase, Jigani Link Road, Bangalore-560 099, India
| | - Prakasam Kuppusamy
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb Research Center, Biocon Park, Bommasandra IV Phase, Jigani Link Road, Bangalore-560 099, India
| | - Sivakumar Ganesan
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb Research Center, Biocon Park, Bommasandra IV Phase, Jigani Link Road, Bangalore-560 099, India
| | - Suresh Krishnamoorthy
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb Research Center, Biocon Park, Bommasandra IV Phase, Jigani Link Road, Bangalore-560 099, India
| | - Roshan Y. Nimje
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb Research Center, Biocon Park, Bommasandra IV Phase, Jigani Link Road, Bangalore-560 099, India
| | - Lokesh Babu Jarugu
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb Research Center, Biocon Park, Bommasandra IV Phase, Jigani Link Road, Bangalore-560 099, India
| | | | - China Anki Reddy
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb Research Center, Biocon Park, Bommasandra IV Phase, Jigani Link Road, Bangalore-560 099, India
| | - Prakash Anjanappa
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb Research Center, Biocon Park, Bommasandra IV Phase, Jigani Link Road, Bangalore-560 099, India
| | - Murali Botlagunta
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb Research Center, Biocon Park, Bommasandra IV Phase, Jigani Link Road, Bangalore-560 099, India
| | - Sridhar Vanteru
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb Research Center, Biocon Park, Bommasandra IV Phase, Jigani Link Road, Bangalore-560 099, India
| | - Nageswararao Maddala
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb Research Center, Biocon Park, Bommasandra IV Phase, Jigani Link Road, Bangalore-560 099, India
| | - Muniyappa Shankar
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb Research Center, Biocon Park, Bommasandra IV Phase, Jigani Link Road, Bangalore-560 099, India
| | - Satheesh Nair
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb Research Center, Biocon Park, Bommasandra IV Phase, Jigani Link Road, Bangalore-560 099, India
| | - John Hynes
- Discovery Chemistry, Bristol-Myers Squibb, P.O. Box 5400, Princeton, New Jersey 08543-4000, United States
| | - Joseph B. Santella
- Discovery Chemistry, Bristol-Myers Squibb, P.O. Box 5400, Princeton, New Jersey 08543-4000, United States
| | - Percy H. Carter
- Discovery Chemistry, Bristol-Myers Squibb, P.O. Box 5400, Princeton, New Jersey 08543-4000, United States
| | - Richard Rampulla
- Discovery Chemistry, Bristol-Myers Squibb, P.O. Box 5400, Princeton, New Jersey 08543-4000, United States
| | - Muthalagu Vetrichelvan
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb Research Center, Biocon Park, Bommasandra IV Phase, Jigani Link Road, Bangalore-560 099, India
| | - Anuradha Gupta
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb Research Center, Biocon Park, Bommasandra IV Phase, Jigani Link Road, Bangalore-560 099, India
| | - Arun Kumar Gupta
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb Research Center, Biocon Park, Bommasandra IV Phase, Jigani Link Road, Bangalore-560 099, India
| | - Arvind Mathur
- Discovery Chemistry, Bristol-Myers Squibb, P.O. Box 5400, Princeton, New Jersey 08543-4000, United States
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BURTOLOSO ANTONIOC, MOMO PATRÍCIAB, NOVAIS GRAZIELEL. Traditional and New methods for the Preparation of Diazocarbonyl Compounds. ACTA ACUST UNITED AC 2018; 90:859-893. [DOI: 10.1590/0001-3765201820170768] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 11/16/2017] [Indexed: 12/14/2022]
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19
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Klaehn JR, Rollins HW, McNally JS, Arulsamy N, Dufek EJ. Phosphoranimines containing cationic N-imidazolinium moieties. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.05.075] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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20
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Levina AS, Repkova MN, Chelobanov BP, Bessudnova EV, Mazurkova NA, Stetsenko DA, Zarytova VF. Impact of delivery method on antiviral activity of phosphodiester, phosphorothioate, and phosphoryl guanidine oligonucleotides in MDCK cells infected with H5N1 bird flu virus. Mol Biol 2017. [DOI: 10.1134/s0026893317040136] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Kitamura M. Azidoimidazolinium Salts: Safe and Efficient Diazo-transfer Reagents and Unique Azido-donors. CHEM REC 2016; 17:653-666. [PMID: 28000372 DOI: 10.1002/tcr.201600118] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Indexed: 11/06/2022]
Abstract
2-Azido-1,3-dimethylimidazolinium chloride (ADMC) and its corresponding hexafluorophosphate (ADMP) were found to be efficient diazo-transfer reagents to various organic compounds. ADMC was prepared by the reaction of 2-chloro-1,3-dimethylimidazolinium chloride (DMC) and sodium azide. ADMP was isolated as a crystal having good thermal stability and low explosibility. ADMC and ADMP reacted with 1,3-dicarbonyl compounds under mild basic conditions to give 2-diazo-1,3-dicarbonyl compounds in high yields, which were easily isolated in virtue of the high water solubility of the by-products. ADMP showed high diazo-transfer ability to primary amines even in the absence of metal salt such as Cu(II). Using this diazotization approach, various alkyl/aryl azides were directly obtained from their corresponding primary amines in high yields. Furthermore, naphthols reacted with ADMC to give the corresponding diazonaphthoquinones in good to high yields. In addition, 2-azido-1,3-dimethylimidazolinium salts were employed as azide-transfer and migratory amidation reagents.
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Affiliation(s)
- Mitsuru Kitamura
- Department Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu, 804-8550, Japan
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22
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Leal RA, Bischof C, Lee YV, Sawano S, McAtee CC, Latimer LN, Russ ZN, Dueber JE, Yu JQ, Sarpong R. Application of a Palladium-Catalyzed C−H Functionalization/Indolization Method to Syntheses ofcis-Trikentrin A and Herbindole B. Angew Chem Int Ed Engl 2016; 55:11824-8. [DOI: 10.1002/anie.201605475] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Raul A. Leal
- Department of Chemistry; University of California, Berkeley; Berkeley CA 94720 USA
| | - Caroline Bischof
- Department of Chemistry; University of California, Berkeley; Berkeley CA 94720 USA
| | - Youjin V. Lee
- Department of Chemistry; University of California, Berkeley; Berkeley CA 94720 USA
| | - Shota Sawano
- Department of Chemistry; University of California, Berkeley; Berkeley CA 94720 USA
| | | | - Luke N. Latimer
- Department of Bioengineering; University of California, Berkeley; Berkeley CA 94720 USA
| | - Zachary N. Russ
- Department of Bioengineering; University of California, Berkeley; Berkeley CA 94720 USA
| | - John E. Dueber
- Department of Bioengineering; University of California, Berkeley; Berkeley CA 94720 USA
| | - Jin-Quan Yu
- Department of Chemistry; The Scripps Research Institute; La Jolla CA 92037 USA
| | - Richmond Sarpong
- Department of Chemistry; University of California, Berkeley; Berkeley CA 94720 USA
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23
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Leal RA, Bischof C, Lee YV, Sawano S, McAtee CC, Latimer LN, Russ ZN, Dueber JE, Yu J, Sarpong R. Application of a Palladium‐Catalyzed C−H Functionalization/Indolization Method to Syntheses of
cis
‐Trikentrin A and Herbindole B. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201605475] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Raul A. Leal
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
| | - Caroline Bischof
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
| | - Youjin V. Lee
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
| | - Shota Sawano
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
| | | | - Luke N. Latimer
- Department of Bioengineering University of California, Berkeley Berkeley CA 94720 USA
| | - Zachary N. Russ
- Department of Bioengineering University of California, Berkeley Berkeley CA 94720 USA
| | - John E. Dueber
- Department of Bioengineering University of California, Berkeley Berkeley CA 94720 USA
| | - Jin‐Quan Yu
- Department of Chemistry The Scripps Research Institute La Jolla CA 92037 USA
| | - Richmond Sarpong
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
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24
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Synthesis, structure, and reaction of chiral 2-azidoimidazolinium salts: (7aS)-3-azido-5,6,7,7a-tetrahydro-2-[(1R)-1-phenylethyl]-1H-pyrrolo[1,2-c]imidazolium hexafluorophosphate and 2-azido-1,3-bis[(S)-1-phenylethyl]imidazolinium hexafluorophosphate. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.03.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Dworak A, Lipowska D, Szweda D, Suwinski J, Trzebicka B, Szweda R. Degradable polymeric nanoparticles by aggregation of thermoresponsive polymers and "click" chemistry. NANOSCALE 2015; 7:16823-16833. [PMID: 26399397 DOI: 10.1039/c5nr04448k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This study describes a novel approach to the preparation of crosslinked polymeric nanoparticles of controlled sizes that can be degraded under basic conditions. For this purpose thermoresponsive copolymers containing azide and alkyne functions were obtained by ATRP of di(ethylene glycol) monomethyl ether methacrylate (D) and 2-aminoethyl methacrylate (A) followed by post polymerization modification. The amino groups of A were reacted with propargyl chloroformate or 2-azido-1,3-dimethylimidazolinium hexafluorophosphate, which led to two types of copolymers. Increasing the temperature of aqueous solutions of the mixed copolymers caused their aggregation into spherical nanoparticles composed of both types of chains. Their dimensions could be controlled by changing the concentration and heating rate of the solutions. Covalent stabilization of aggregated chains was performed by a "click" reaction between the azide and alkyne groups. Due to the presence of a carbamate bond the nanoparticles undergo pH dependent degradation under mild basic conditions. The proposed procedure opens a route to new carriers for the controlled release of active species.
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Affiliation(s)
- Andrzej Dworak
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland.
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Ford A, Miel H, Ring A, Slattery CN, Maguire AR, McKervey MA. Modern Organic Synthesis with α-Diazocarbonyl Compounds. Chem Rev 2015; 115:9981-10080. [PMID: 26284754 DOI: 10.1021/acs.chemrev.5b00121] [Citation(s) in RCA: 1093] [Impact Index Per Article: 121.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | - Hugues Miel
- Almac Discovery Ltd. , David Keir Building, Stranmillis Road, Belfast BT9 5AG, United Kingdom
| | | | | | | | - M Anthony McKervey
- Almac Sciences Ltd. , Almac House, 20 Seagoe Industrial Estate, Craigavon BT63 5QD, United Kingdom
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29
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Kitamura M, Takahashi S, Okauchi T. Rh-Catalyzed Cyclization of 3-Aryloxycarbonyldiazonaphthoquinones for the Synthesis of β-Phenylnaphthalene Lactones and Formal Synthesis of Pradimicinone. J Org Chem 2015; 80:8406-16. [DOI: 10.1021/acs.joc.5b01251] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mitsuru Kitamura
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550 Japan
| | - Shuhei Takahashi
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550 Japan
| | - Tatsuo Okauchi
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550 Japan
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30
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Kitamura M, Sakata R, Tashiro N, Ikegami A, Okauchi T. Synthesis of Diazonaphthoquinones from Naphthols by Diazo-Transfer Reaction. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2015. [DOI: 10.1246/bcsj.20150021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Rie Sakata
- Department of Applied Chemistry, Kyushu Institute of Technology
| | | | - Azusa Ikegami
- Department of Applied Chemistry, Kyushu Institute of Technology
| | - Tatsuo Okauchi
- Department of Applied Chemistry, Kyushu Institute of Technology
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Hickey SM, Ashton TD, Pfeffer FM. Facile Synthesis of Guanidine Functionalised Building Blocks. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201402242] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Suárez JR, Collado-Sanz D, Cárdenas DJ, Chiara JL. Nonafluorobutanesulfonyl Azide as a Shelf-Stable Highly Reactive Oxidant for the Copper-Catalyzed Synthesis of 1,3-Diynes from Terminal Alkynes. J Org Chem 2014; 80:1098-106. [DOI: 10.1021/jo5025909] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- José Ramón Suárez
- Instituto de Química Orgánica General (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - Daniel Collado-Sanz
- Departamento
de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain
| | - Diego J. Cárdenas
- Departamento
de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain
| | - Jose Luis Chiara
- Instituto de Química Orgánica General (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
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34
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A unique one-pot reaction via CC cleavage from aminomethylene benzimidazoles to access benzimidazolones with wide potentiality. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.05.113] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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35
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Kitamura M, Kato S, Yano M, Tashiro N, Shiratake Y, Sando M, Okauchi T. A reagent for safe and efficient diazo-transfer to primary amines: 2-azido-1,3-dimethylimidazolinium hexafluorophosphate. Org Biomol Chem 2014; 12:4397-406. [DOI: 10.1039/c4ob00515e] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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36
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Kitamura M. Development of Safe Diazo-transfer Reagent: Synthesis and Reaction of Guanidino Diazonium Salt (Azide Imidazolinium Salt). J SYN ORG CHEM JPN 2014. [DOI: 10.5059/yukigoseikyokaishi.72.14] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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37
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Leitans J, Sprudza A, Tanc M, Vozny I, Zalubovskis R, Tars K, Supuran CT. 5-Substituted-(1,2,3-triazol-4-yl)thiophene-2-sulfonamides strongly inhibit human carbonic anhydrases I, II, IX and XII: Solution and X-ray crystallographic studies. Bioorg Med Chem 2013; 21:5130-8. [DOI: 10.1016/j.bmc.2013.06.041] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2013] [Accepted: 06/16/2013] [Indexed: 12/16/2022]
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38
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Kitamura M, Murakami K, Shiratake Y, Okauchi T. Synthesis of α-Arylcarboxylic Acid Amides from Silyl Enol Ether via Migratory Amidation with 2-Azido-1,3-dimethylimidazolinium Hexafluorophosphate. CHEM LETT 2013. [DOI: 10.1246/cl.130195] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Kento Murakami
- Department of Applied Chemistry, Kyushu Institute of Technology
| | | | - Tatsuo Okauchi
- Department of Applied Chemistry, Kyushu Institute of Technology
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39
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Tanimoto H, Kakiuchi K. Recent Applications and Developments of Organic Azides in Total Synthesis of Natural Products. Nat Prod Commun 2013. [DOI: 10.1177/1934578x1300800730] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Organic azides have been exploited since their discovery because of their high reactivities. Various organic reactions using azides have been synthetically applied in chemical biology pharmaceuticals medicinal and agricultural areas. In this review we present some recent applications and developments of organic azides in the total synthesis of natural products (mostly within five years) especially alkaloids. We focus not only on application examples of organic azides but also show their preparation methods including recently reported procedures concerning their decomposing and reducing methods in the syntheses of bioactive molecules.
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Affiliation(s)
- Hiroki Tanimoto
- Graduate School of Materials Science Nara Institute of Science and Technology (NAIST) 8916-5 Takayama-cho Ikoma Nara 630-0192 Japan
| | - Kiyomi Kakiuchi
- Graduate School of Materials Science Nara Institute of Science and Technology (NAIST) 8916-5 Takayama-cho Ikoma Nara 630-0192 Japan
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Hansen MB, van Gurp THM, van Hest JCM, Löwik DWPM. Simple and Efficient Solid-Phase Preparation of Azido-peptides. Org Lett 2012; 14:2330-3. [DOI: 10.1021/ol300740g] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Morten B. Hansen
- Radboud University, Institute for Molecules and Materials, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Theodorus H. M. van Gurp
- Radboud University, Institute for Molecules and Materials, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Jan C. M. van Hest
- Radboud University, Institute for Molecules and Materials, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Dennis W. P. M. Löwik
- Radboud University, Institute for Molecules and Materials, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
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43
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Development of a General Approach to the Leucetta-Derived Alkaloids. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/b978-0-12-386540-3.00008-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Abstract
Convenient methods for the direct conversion of imidazolium salts to the corresponding 2-imidazolone or 2-imino imidazole derivatives have been developed. Treatment of the salt with commercial bleach leads to effective oxidation at C2 and the formation of the corresponding imidazolone. Alternatively, treatment of the salt with an N-chloro amide affords the corresponding protected 2-amino derivative in good yield.
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Affiliation(s)
- Heather M Lima
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA
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Synthesis of α,α-diarylacetamides from benzyl aryl ketones using 2-azido-1,3-dimethylimidazolinium hexafluorophosphate. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.04.042] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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46
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Kitamura M, Sakata R, Okauchi T. Palladium-catalyzed cross-coupling reactions of 2-diazonaphthoquinones with arylboronic acids. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.02.047] [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]
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47
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