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Kazmi MZH, Schneider OM, Hall DG. Expanding the Role of Boron in New Drug Chemotypes: Properties, Chemistry, Pharmaceutical Potential of Hemiboronic Naphthoids. J Med Chem 2023; 66:13768-13787. [PMID: 37752013 DOI: 10.1021/acs.jmedchem.3c01194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2023]
Abstract
New chemotypes and bioisosteres can open a new chemical space in drug discovery and help meet an urgent demand for novel agents to fight infections and other diseases. With the aim of identifying new boron-containing drug chemotypes, this article details a comprehensive evaluation of the pseudoaromatic hemiboronic naphthoids, benzoxaza- and benzodiazaborines. Relevant physical properties in aqueous media (acidity, solubility, log P, and stability) of prototypic members of four subclasses were determined. Both scaffolds are amenable to common reactions used in drug discovery, such as chemoselective Suzuki-Miyaura, Chan-Lam, and amidation reactions. Small model libraries were prepared to assess the scope of these transformations, and the entire collection was screened for antifungal (Candida albicans) and antibacterial activity (MRSA, Escherichia coli), unveiling promising benzoxazaborines with low micromolar minimum inhibitory concentration values. Select DMPK assays of representative compounds suggest promising drug-like behavior for all four subclasses. Moreover, several drug isosteres were evaluated for anti-inflammatory and anticancer activity as appropriate.
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Affiliation(s)
- M Zain H Kazmi
- Department of Chemistry, Centennial Center for Interdisciplinary Science, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Olivia M Schneider
- Department of Chemistry, Centennial Center for Interdisciplinary Science, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Dennis G Hall
- Department of Chemistry, Centennial Center for Interdisciplinary Science, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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2
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Martinelli J, Tei L, Geninatti Crich S, Alberti D, Djanashvili K. Towards Enhanced MRI Performance of Tumor-Specific Dimeric Phenylboronic Contrast Agents. Molecules 2021; 26:molecules26061730. [PMID: 33808910 PMCID: PMC8003780 DOI: 10.3390/molecules26061730] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 03/15/2021] [Accepted: 03/16/2021] [Indexed: 01/06/2023] Open
Abstract
It is known that phenylboronic acid (PBA) can target tumor tissues by binding to sialic acid, a substrate overexpressed by cancer cells. This capability has previously been explored in the design of targeting diagnostic probes such as Gd- and 68Ga-DOTA-EN-PBA, two contrast agents for magnetic resonance imaging (MRI) and positron emission tomography (PET), respectively, whose potential has already been demonstrated through in vivo experiments. In addition to its high resolution, the intrinsic low sensitivity of MRI stimulates the search for more effective contrast agents, which, in the case of small-molecular probes, basically narrows down to either increased tumbling time of the entire molecule or elevated local concentration of the paramagnetic ions, both strategies resulting in enhanced relaxivity, and consequently, a higher MRI contrast. The latter strategy can be achieved by the design of multimeric GdIII complexes. Based on the monomeric PBA-containing probes described recently, herein, we report the synthesis and characterization of the dimeric analogues (GdIII-DOTA-EN)2-PBA and (GdIII-DOTA-EN)2F2PBA. The presence of two Gd ions in one molecule clearly contributes to the improved biological performance, as demonstrated by the relaxometric study and cell-binding investigations.
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Affiliation(s)
- Jonathan Martinelli
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands;
- Department of Science and Technological Innovation, Università del Piemonte Orientale, Viale Michel 11, 15121 Alessandria, Italy;
| | - Lorenzo Tei
- Department of Science and Technological Innovation, Università del Piemonte Orientale, Viale Michel 11, 15121 Alessandria, Italy;
| | - Simonetta Geninatti Crich
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126 Torino, Italy; (S.G.C.); (D.A.)
| | - Diego Alberti
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126 Torino, Italy; (S.G.C.); (D.A.)
| | - Kristina Djanashvili
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands;
- Correspondence: ; Tel.: +31-15-278-9052
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3
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Martinelli J, Jiménez-Juárez R, Alberti D, Geninatti Crich S, Djanashvili K. Solid-phase synthesis and evaluation of tumour-targeting phenylboronate-based MRI contrast agents. Org Biomol Chem 2020; 18:7899-7906. [PMID: 33000853 DOI: 10.1039/d0ob01552k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Paramagnetic macrocycles functionalized with phenylboronic moieties have proven to be interesting for MRI applications based on their ability to recognize cancer cells and generate local contrast. However, full use of the potential of this class of compounds is hampered by laborious and inefficient synthetic and, especially, purification procedures. The amphiphilic character of water-soluble phenylboronates renders them difficult compounds to be prepared through conventional solution synthesis due to the tendency to aggregate and form adducts with other nucleophiles. The new strategy described herein exploits the advantage of solid-phase synthesis with the application of DEAM-PS resin for anchorage and the subsequent simplified derivatization of boronates. GdDOTA-EN-PBA and its fluorinated analogue GdDOTA-EN-F2PBA were synthesized in a much easier, faster and economically convenient way to achieve good yields and purity. Furthermore, the effect of electron-withdrawing fluorine atoms on the aromatic ring of the latter compound was investigated by comparing the physico-chemical properties of both compounds as well as their binding affinity towards melanoma cancer cells.
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Affiliation(s)
- Jonathan Martinelli
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands.
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4
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Hinkes SPA, Kämmerer S, Klein CDP. Diversity-oriented synthesis of peptide-boronic acids by a versatile building-block approach. Chem Sci 2020; 11:9898-9903. [PMID: 34094250 PMCID: PMC8162117 DOI: 10.1039/d0sc03999c] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 08/20/2020] [Indexed: 12/25/2022] Open
Abstract
A new strategy for the synthesis of peptide-boronic acids (PBAs) is presented. 20 Fmoc-protected natural amino acids with orthogonal side-chain protection were straightforwardly converted into their corresponding boron analogues in three simple steps. Subsequent immobilisation on commercially available 1-glycerol polystyrene resin and on-resin transformations yielded a diversity of sequences in high purity. The strategy eliminates various synthetic obstacles such as multi-step routes, low yields, and inseparable impurities. The described method comprises great potential to be implemented in automated combinatorial approaches by markedly facilitating the access to a variety of PBAs. The coupling of amino acids or other building blocks with α-aminoboronates allows the creation of hybrid molecules with significant potential in various scientific disciplines, such as medicinal chemistry, structural biology, and materials science.
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Affiliation(s)
- Stefan P A Hinkes
- Department of Medicinal Chemistry, Institute of Pharmacy and Molecular Biotechnology (IPMB), Heidelberg University Im Neuenheimer Feld 364 69120 Heidelberg Germany
| | - Severin Kämmerer
- Department of Medicinal Chemistry, Institute of Pharmacy and Molecular Biotechnology (IPMB), Heidelberg University Im Neuenheimer Feld 364 69120 Heidelberg Germany
| | - Christian D P Klein
- Department of Medicinal Chemistry, Institute of Pharmacy and Molecular Biotechnology (IPMB), Heidelberg University Im Neuenheimer Feld 364 69120 Heidelberg Germany
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Verzele D, Ruiz García Y, Madder A. Untapped Opportunities of Resin-to-Resin Transfer Reactions (RRTR) for the Convergent Assembly of Multivalent Peptide Conjugates. Chemistry 2020; 26:4701-4705. [PMID: 31997431 DOI: 10.1002/chem.202000434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Indexed: 11/07/2022]
Abstract
Handling of the individual fragments remains a bottleneck in the convergent assembly of peptides. Overlooked since the emergence of ligation chemistries during the past two decades, so-called resin-to-resin transfer reactions (RRTR) are here described as a strategic shortcut in this context. Condensation of the involved moieties at an acceptor resin is facilitated by shuttling peptide segments directly from a donor resin in a one-pot fashion. The straightforward synthesis of a sterically constrained 13-mer peptidosteroid model illustrates the utility of this approach, presenting the first successful application of the RRTR methodology in the field of multivalent design and bioconjugation. Relying on established procedures to generate, monitor and isolate intermediates and products, the solid-phase nature of the entire strategy allows for the fast construction of polypeptide adducts and libraries thereof. As such, a rejuvenated use and new opportunities for RRTR are reported.
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Affiliation(s)
- Dieter Verzele
- Organic and Biomimetic Chemistry Research Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 (S4), 9000, Ghent, Belgium
| | - Yara Ruiz García
- Organic and Biomimetic Chemistry Research Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 (S4), 9000, Ghent, Belgium
| | - Annemieke Madder
- Organic and Biomimetic Chemistry Research Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 (S4), 9000, Ghent, Belgium
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6
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Neochoritis CG, Shaabani S, Ahmadianmoghaddam M, Zarganes-Tzitzikas T, Gao L, Novotná M, Mitríková T, Romero AR, Irianti MI, Xu R, Olechno J, Ellson R, Helan V, Kossenjans M, Groves MR, Dömling A. Rapid approach to complex boronic acids. SCIENCE ADVANCES 2019; 5:eaaw4607. [PMID: 31281893 PMCID: PMC6611686 DOI: 10.1126/sciadv.aaw4607] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 05/30/2019] [Indexed: 05/28/2023]
Abstract
The compatibility of free boronic acid building blocks in multicomponent reactions to readily create large libraries of diverse and complex small molecules was investigated. Traditionally, boronic acid synthesis is sequential, synthetically demanding, and time-consuming, which leads to high target synthesis times and low coverage of the boronic acid chemical space. We have performed the synthesis of large libraries of boronic acid derivatives based on multiple chemistries and building blocks using acoustic dispensing technology. The synthesis was performed on a nanomole scale with high synthesis success rates. The discovery of a protease inhibitor underscores the usefulness of the approach. Our acoustic dispensing-enabled chemistry paves the way to highly accelerated synthesis and miniaturized reaction scouting, allowing access to unprecedented boronic acid libraries.
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Affiliation(s)
- Constantinos G. Neochoritis
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
| | - Shabnam Shaabani
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
| | - Maryam Ahmadianmoghaddam
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
| | - Tryfon Zarganes-Tzitzikas
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
| | - Li Gao
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
| | - Michaela Novotná
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
| | - Tatiana Mitríková
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
| | - Atilio Reyes Romero
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
| | - Marina Ika Irianti
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
| | - Ruixue Xu
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
| | - Joe Olechno
- Labcyte Inc., 170 Rose Orchard Way, San Jose, CA 95134, USA
| | - Richard Ellson
- Labcyte Inc., 170 Rose Orchard Way, San Jose, CA 95134, USA
| | - Victoria Helan
- Hit Discovery, Discovery Sciences, IMED Biotech Unit, AstraZeneca, Mölndal, Gothenburg SE-43183, Sweden
| | - Michael Kossenjans
- Hit Discovery, Discovery Sciences, IMED Biotech Unit, AstraZeneca, Mölndal, Gothenburg SE-43183, Sweden
| | - Matthew R. Groves
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
| | - Alexander Dömling
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
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7
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Daniels BE, Stivala CE. A solid-phase approach for the synthesis of α-aminoboronic acid peptides. RSC Adv 2018; 8:3343-3347. [PMID: 35541192 PMCID: PMC9077542 DOI: 10.1039/c7ra13479g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 01/10/2018] [Indexed: 01/06/2023] Open
Abstract
A solid-phase synthesis of α-aminoboronic acid peptides using a 1-glycerol polystyrene resin is described.
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8
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Paul J, Presset M, Le Gall E. Multicomponent Mannich-Like Reactions of Organometallic Species. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700038] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Jérôme Paul
- Electrochimie et Synthèse Organique; Université Paris Est, ICMPE (UMR 7182), CNRS, UPEC; 2-8 rue Henri Dunant 94320 Thiais France
| | - Marc Presset
- Electrochimie et Synthèse Organique; Université Paris Est, ICMPE (UMR 7182), CNRS, UPEC; 2-8 rue Henri Dunant 94320 Thiais France
| | - Erwan Le Gall
- Electrochimie et Synthèse Organique; Université Paris Est, ICMPE (UMR 7182), CNRS, UPEC; 2-8 rue Henri Dunant 94320 Thiais France
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9
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Behnam MAM, Sundermann TR, Klein CD. Solid Phase Synthesis of C-Terminal Boronic Acid Peptides. Org Lett 2016; 18:2016-9. [DOI: 10.1021/acs.orglett.6b00625] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Mira A. M. Behnam
- Medicinal Chemistry, Institute
of Pharmacy and Molecular Biotechnology IPMB, Heidelberg University, Im Neuenheimer Feld 364, 69120 Heidelberg, Germany
| | - Tom R. Sundermann
- Medicinal Chemistry, Institute
of Pharmacy and Molecular Biotechnology IPMB, Heidelberg University, Im Neuenheimer Feld 364, 69120 Heidelberg, Germany
| | - Christian D. Klein
- Medicinal Chemistry, Institute
of Pharmacy and Molecular Biotechnology IPMB, Heidelberg University, Im Neuenheimer Feld 364, 69120 Heidelberg, Germany
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10
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Wu Q, Du X, Chang A, Jiang X, Yan X, Cao X, Farooqi ZH, Wu W. Bioinspired synthesis of poly(phenylboronic acid) microgels with high glucose selectivity at physiological pH. Polym Chem 2016. [DOI: 10.1039/c6py01521b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A microgel that is more sensitive towards glucose than to other saccharides is made of 4-vinylphenylboronic acid crosslinked withN,N′-bis(propene)perylene-3,4,9,10-tetracarboxyldiimide.
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Affiliation(s)
- Qingshi Wu
- State Key Laboratory for Physical Chemistry of Solid Surfaces
- Collaborative Innovation Center of Chemistry for Energy Materials
- The Key Laboratory for Chemical Biology of Fujian Province
- and Department of Chemistry
- College of Chemistry and Chemical Engineering
| | - Xue Du
- State Key Laboratory for Physical Chemistry of Solid Surfaces
- Collaborative Innovation Center of Chemistry for Energy Materials
- The Key Laboratory for Chemical Biology of Fujian Province
- and Department of Chemistry
- College of Chemistry and Chemical Engineering
| | - Aiping Chang
- State Key Laboratory for Physical Chemistry of Solid Surfaces
- Collaborative Innovation Center of Chemistry for Energy Materials
- The Key Laboratory for Chemical Biology of Fujian Province
- and Department of Chemistry
- College of Chemistry and Chemical Engineering
| | - Xiaomei Jiang
- Clinical Laboratory
- Huli Center for Maternal and Child Health
- Xiamen
- China
| | - Xiaoyun Yan
- State Key Laboratory for Physical Chemistry of Solid Surfaces
- Collaborative Innovation Center of Chemistry for Energy Materials
- The Key Laboratory for Chemical Biology of Fujian Province
- and Department of Chemistry
- College of Chemistry and Chemical Engineering
| | - Xiaoyu Cao
- State Key Laboratory for Physical Chemistry of Solid Surfaces
- Collaborative Innovation Center of Chemistry for Energy Materials
- The Key Laboratory for Chemical Biology of Fujian Province
- and Department of Chemistry
- College of Chemistry and Chemical Engineering
| | | | - Weitai Wu
- State Key Laboratory for Physical Chemistry of Solid Surfaces
- Collaborative Innovation Center of Chemistry for Energy Materials
- The Key Laboratory for Chemical Biology of Fujian Province
- and Department of Chemistry
- College of Chemistry and Chemical Engineering
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11
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Zhou S, Sha H, Ke X, Liu B, Wang X, Du X. Combination drug release of smart cyclodextrin-gated mesoporous silica nanovehicles. Chem Commun (Camb) 2015; 51:7203-7206. [PMID: 25811958 DOI: 10.1039/c5cc00585j] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/26/2024]
Abstract
An integrated γ-cyclodextrin-gated mesoporous silica delivery system via dual dynamic covalent bonds was constructed with dual drug loading for simultaneous and cascade release in targeted combination drug therapy.
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Affiliation(s)
- Shengwang Zhou
- Key Laboratory of Mesoscopic Chemistry (Ministry of Education), State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
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12
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Liu Z, Hundal-Jabal N, Wong M, Yapp D, Lin KS, Bénard F, Perrin DM. A new18F-heteroaryltrifluoroborate radio-prosthetic with greatly enhanced stability that is labelled by18F–19F-isotope exchange in good yield at high specific activity. MEDCHEMCOMM 2014. [DOI: 10.1039/c3md00328k] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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13
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Hyodo K, Suetsugu M, Nishihara Y. Diborylation of Alkynyl MIDA Boronates and Sequential Chemoselective Suzuki–Miyaura Couplings: A Formal Carboborylation of Alkynes. Org Lett 2013; 16:440-3. [DOI: 10.1021/ol403326z] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Keita Hyodo
- Division
of Earth, Life, and Molecular Sciences, Graduate School of Nature
Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Masato Suetsugu
- Division
of Earth, Life, and Molecular Sciences, Graduate School of Nature
Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Yasushi Nishihara
- Division
of Earth, Life, and Molecular Sciences, Graduate School of Nature
Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
- Japan Science and
Technology Agency, ACT-C, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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14
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Roemmele RC, Christie MA. Development and Scale-Up of an Optimized Route to the Peptide Boronic Acid, CEP-18770. Org Process Res Dev 2013. [DOI: 10.1021/op400010u] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Renee C. Roemmele
- Chemical Process Research and Development, Teva Branded Pharmaceutical Products R&D Inc., 383 Phoenixville Pike, Malvern, Pennsylvania 19355, United States
| | - Michael A. Christie
- Chemical Process Research and Development, Teva Branded Pharmaceutical Products R&D Inc., 383 Phoenixville Pike, Malvern, Pennsylvania 19355, United States
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15
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Oberli MA, Buchwald SL. A general method for Suzuki-Miyaura coupling reactions using lithium triisopropyl borates. Org Lett 2012; 14:4606-9. [PMID: 22894743 DOI: 10.1021/ol302063g] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Conditions for the Suzuki-Miyaura coupling of lithium triisopropyl borates are reported, as well as a procedure for a one-pot lithiation, borylation, and subsequent Suzuki-Miyaura coupling of various heterocycles with aryl halides. These borate species are much more stable toward protodeboronation than the corresponding boronic acids and can conveniently be stored on benchtop at room temperature.
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Affiliation(s)
- Matthias A Oberli
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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16
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Lennox AJJ, Lloyd-Jones GC. Organotrifluoroborate Hydrolysis: Boronic Acid Release Mechanism and an Acid–Base Paradox in Cross-Coupling. J Am Chem Soc 2012; 134:7431-41. [DOI: 10.1021/ja300236k] [Citation(s) in RCA: 163] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | - Guy C. Lloyd-Jones
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol,
BS8 1TS, U.K
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17
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Colombel V, Presset M, Oehlrich D, Rombouts F, Molander GA. Synthesis and reactivity of solid-supported organotrifluoroborates in Suzuki cross-coupling. Org Lett 2012; 14:1680-3. [PMID: 22404451 DOI: 10.1021/ol300215p] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Solid-supported organotrifluoroborates were prepared in high yields by ion exchange with Amberlyst resins. The reactivity of solid supported aryltrifluoroborates was evaluated in Suzuki-Miyaura couplings with numerous aryl bromide partners. Electron-rich and -poor substituents were tolerated on both substrates, providing yields up to 90%. Examples of alkyl-, alkenyl-, alkynyl-, and heteroaryltrifluoborates were also successfully cross-coupled to aryl halides.
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Affiliation(s)
- Virginie Colombel
- Neuroscience Medicinal Chemistry, Research & Development, Janssen Pharmaceutica, Turnhoutseweg 30, 2340 Beerse, Belgium
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18
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Dick GR, Woerly EM, Burke MD. A general solution for the 2-pyridyl problem. Angew Chem Int Ed Engl 2012; 51:2667-72. [PMID: 22287537 PMCID: PMC3433254 DOI: 10.1002/anie.201108608] [Citation(s) in RCA: 189] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2011] [Indexed: 11/09/2022]
Affiliation(s)
- Graham R Dick
- Howard Hughes Medical Institute, Department of Chemistry, University of Illinois at Urbana-Champaign, 61801, USA
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19
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20
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Tripoteau F, Verdelet T, Hercouet A, Carreaux F, Carboni B. Boron- and silicon-substituted [3]-1-heterodendralenes as versatile building blocks for the rapid construction of polycyclic architectures. Chemistry 2011; 17:13670-5. [PMID: 22069230 DOI: 10.1002/chem.201101624] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2011] [Indexed: 11/06/2022]
Affiliation(s)
- Fabien Tripoteau
- Sciences Chimiques de Rennes, UMR 6626 CNRS, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes CEDEX, France
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21
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Affiliation(s)
- Ana C. Albéniz
- IU CINQUIMA/Química Inorgánica, Universidad de Valladolid, 47071 Valladolid. Spain, Fax: +34‐983423013
| | - Nora Carrera
- IU CINQUIMA/Química Inorgánica, Universidad de Valladolid, 47071 Valladolid. Spain, Fax: +34‐983423013
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22
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Candeias NR, Montalbano F, Cal PMSD, Gois PMP. Boronic acids and esters in the Petasis-borono Mannich multicomponent reaction. Chem Rev 2011; 110:6169-93. [PMID: 20677749 DOI: 10.1021/cr100108k] [Citation(s) in RCA: 386] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nuno R Candeias
- iMed.UL, Faculdade de Farmácia da Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal.
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23
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Bonin H, Delacroix T, Gras E. Dioxazaborocanes: old adducts, new tricks. Org Biomol Chem 2011; 9:4714-24. [DOI: 10.1039/c1ob05330b] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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25
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Dick GR, Knapp DM, Gillis EP, Burke MD. General method for synthesis of 2-heterocyclic N-methyliminodiacetic acid boronates. Org Lett 2010; 12:2314-7. [PMID: 20465293 DOI: 10.1021/ol100671v] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A wide range of 2-pyridyl and other difficult-to-access heterocyclic N-methyliminodiacetic acid boronates can be readily prepared from the corresponding bromides via a new method involving direct transligation of 2-heterocyclic trialkoxyborate salts with N-methyliminodiacetic acid (MIDA) at elevated temperatures.
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Affiliation(s)
- Graham R Dick
- Howard Hughes Medical Institute, Roger Adams Lab, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
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26
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Brak K, Ellman JA. Asymmetric Rh(I)-Catalyzed Addition of MIDA Boronates to N-tert-Butanesulfinyl Aldimines: Development and Comparison to Trifluoroborates. J Org Chem 2010; 75:3147-50. [DOI: 10.1021/jo100318s] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Katrien Brak
- Department of Chemistry, University of California, Berkeley, California 94720
| | - Jonathan A. Ellman
- Department of Chemistry, University of California, Berkeley, California 94720
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27
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Mothana S, Grassot JM, Hall D. Multistep Phase-Switch Synthesis by Using Liquid-Liquid Partitioning of Boronic Acids: Productive Tags with an Expanded Repertoire of Compatible Reactions. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200906710] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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28
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Jin S, Cheng Y, Reid S, Li M, Wang B. Carbohydrate recognition by boronolectins, small molecules, and lectins. Med Res Rev 2010; 30:171-257. [PMID: 19291708 PMCID: PMC2829346 DOI: 10.1002/med.20155] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Carbohydrates are known to mediate a large number of biological and pathological events. Small and macromolecules capable of carbohydrate recognition have great potentials as research tools, diagnostics, vectors for targeted delivery of therapeutic and imaging agents, and therapeutic agents. However, this potential is far from being realized. One key issue is the difficulty in the development of "binders" capable of specific recognition of carbohydrates of biological relevance. This review discusses systematically the general approaches that are available in developing carbohydrate sensors and "binders/receptors," and their applications. The focus is on discoveries during the last 5 years.
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Affiliation(s)
- Shan Jin
- Department of Chemistry and Center for Biotechnology and Drug Design, Georgia State University, Atlanta, GA 30302-4098, USA
| | - Yunfeng Cheng
- Department of Chemistry and Center for Biotechnology and Drug Design, Georgia State University, Atlanta, GA 30302-4098, USA
| | - Suazette Reid
- Department of Chemistry and Center for Biotechnology and Drug Design, Georgia State University, Atlanta, GA 30302-4098, USA
| | - Minyong Li
- Department of Chemistry and Center for Biotechnology and Drug Design, Georgia State University, Atlanta, GA 30302-4098, USA
| | - Binghe Wang
- Department of Chemistry and Center for Biotechnology and Drug Design, Georgia State University, Atlanta, GA 30302-4098, USA
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29
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Mothana S, Grassot JM, Hall DG. Multistep phase-switch synthesis by using liquid-liquid partitioning of boronic acids: productive tags with an expanded repertoire of compatible reactions. Angew Chem Int Ed Engl 2010; 49:2883-7. [PMID: 20146294 DOI: 10.1002/anie.200906710] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2009] [Indexed: 11/11/2022]
Abstract
Tagging along: a system for phase-switch synthesis has been developed. The boronic acid functionality is used as a phase tag that complexes to sorbitol and facilitates compound transfer from an organic solvent to water at high pH. The phase tag can then be used in a productive reaction step to generate targeted products, thereby eliminating purification by silica gel chromatography.
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Affiliation(s)
- Sam Mothana
- Department of Chemistry, Gunning-Lemieux Chemistry Centre, University of Alberta, Edmonton, Canada
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30
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Kovačič S, Krajnc P. Macroporous monolithic poly(4‐vinylbenzyl chloride) columns for organic synthesis facilitation by
in situ
polymerization of high internal phase emulsions. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23732] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Sebastijan Kovačič
- Laboratory for Organic and Polymer Chemistry, Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, SI 2000 Maribor, Slovenia
| | - Peter Krajnc
- Laboratory for Organic and Polymer Chemistry, Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, SI 2000 Maribor, Slovenia
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31
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Durka K, Kurach P, Luliński S, Serwatowski J. Functionalization of Dihalophenylboronic Acids by Deprotonation of TheirN-Butyldiethanolamine Esters. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900526] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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32
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Knapp DM, Gillis EP, Burke MD. A general solution for unstable boronic acids: slow-release cross-coupling from air-stable MIDA boronates. J Am Chem Soc 2009; 131:6961-3. [PMID: 19405470 DOI: 10.1021/ja901416p] [Citation(s) in RCA: 428] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Many boronic acids, including 2-heterocyclic, vinyl, and cyclopropyl derivatives, are inherently unstable, which can limit their benchtop storage and/or efficient cross-coupling. We herein report the first general solution to this problem: in situ slow release of unstable boronic acids from the corresponding air-stable MIDA boronates. This remarkably general approach has transformed all three classes of these unstable boronic acids into shelf-stable and highly effective building blocks for cross-coupling with a wide range of aryl and heteroaryl chlorides.
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Affiliation(s)
- David M Knapp
- Roger Adams Lab, Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
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33
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Abstract
Due to its sensitivity to most synthetic reagents, it is typically necessary to introduce the boronic acid functional group just prior to its utilization. Overcoming this important limitation, we herein report that air- and chromatographically stable MIDA boronates are compatible with a wide range of common reagents which enables the multistep synthesis of complex boronic acid building blocks from simple B-containing starting materials. X-ray and variable temperature NMR studies link the unique stability of MIDA boronates to a kinetic inaccessibility of the potentially reactive boron p-orbital and/or nitrogen lone pair. These findings were collectively harnessed to achieve a short and modular total synthesis of (+)-crocacin C via the iterative cross-coupling of a structurally complex, MIDA-protected haloboronic acid building block.
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Affiliation(s)
- Eric P Gillis
- Roger Adams Laboratory, Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
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34
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Kurach P, Luliński S, Serwatowski J. One-Pot Generation of Lithium (Lithiophenyl)trialkoxyborates from Substituted Dihalobenzenes (Hal = Br, I) and Their Derivatization with Electrophiles. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800245] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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35
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Harwig CW, Ting R, Adam MJ, Ruth TJ, Perrin DM. Synthesis and characterization of 2,6-difluoro-4-carboxyphenylboronic acid and a biotin derivative thereof as captors of anionic aqueous [18F]-fluoride for the preparation of [18F/19F]-labeled aryltrifluoroborates with high kinetic stability. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.03.021] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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36
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Molander GA, Cooper DJ. Functionalization of organotrifluoroborates: reductive amination. J Org Chem 2008; 73:3885-91. [PMID: 18412389 DOI: 10.1021/jo800383e] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein we report the conversion of aldehyde-containing potassium and tetrabutylammonium organotrifluoroborates to the corresponding amines through reductive amination protocols. Potassium formate facilitated by catalytic palladium acetate, sodium triacetoxyborohydride, and pyridine borane have all served as effective hydride donors, reducing the initially formed imines or iminium ions to provide the corresponding amines.
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Affiliation(s)
- Gary A Molander
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA.
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37
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Tsukamoto H, Suzuki T, Sato M, Kondo Y. Chromatography-free Pd-catalyzed deprotection of allyl ethers using PS-DEAM as a scavenger of boronic acids and Pd catalyst. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.10.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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38
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Kliś T, Serwatowski J. Unusual reactivity of ortho-carbonylphenylboronic acids with diethanolamine. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.05.149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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39
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DiMauro EF, Vitullo JR. Microwave-assisted preparation of fused bicyclic heteroaryl boronates: application in one-pot Suzuki couplings. J Org Chem 2007; 71:3959-62. [PMID: 16674073 DOI: 10.1021/jo060218p] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The rapid and efficient synthesis of various disubstituted 5,6-fused heterocycles using a microwave-assisted one-pot cyclization-Suzuki coupling approach is described. This work highlights the tolerance of the boronic ester functional group to a variety of reaction conditions and the utility of functionalized boronates as penultimate intermediates in the synthesis of diverse compound libraries.
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Affiliation(s)
- Erin F DiMauro
- Department of Chemistry Research and Discovery, Amgen Inc., One Kendall Square, Building 1000, Cambridge, Massachusetts 02139, USA.
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40
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Jung N, Wiehn M, Bräse S. Multifunctional Linkers for Combinatorial Solid Phase Synthesis. Top Curr Chem (Cham) 2007. [DOI: 10.1007/128_2007_118] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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41
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Mothana S, Chahal N, Vanneste S, Hall DG. Phase-Switch Synthesis with Boronic Acids as Productive Tags. ACTA ACUST UNITED AC 2007; 9:193-6. [PMID: 17348725 DOI: 10.1021/cc060149s] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sam Mothana
- Department of Chemistry, Gunning-Lemieux Chemistry Centre, University of Alberta, Edmonton, Alberta, T6G 2G2 Canada
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42
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D??browski M, Kurach P, Luliński S, Serwatowski J. Anortho-lithiated derivative of protected phenylboronic acid: an approach toortho-functionalized arylboronic acids and 1,3-dihydro-1-hydroxybenzo[c][2,1]oxaboroles. Appl Organomet Chem 2007. [DOI: 10.1002/aoc.1217] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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43
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Kaiser PF, Churches QI, Hutton CA. Organoboron Reagents in the Preparation of Functionalized ?-Amino Acids. Aust J Chem 2007. [DOI: 10.1071/ch07103] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Over the past decade, major advances in the preparation and utilization of organoboron reagents have been applied to virtually all areas of organic synthesis. The present review collates recent examples of the use of organoboron reagents in the synthesis of α-amino acids and their derivatives. Aryl- and alkenylboronic acids have been used in the asymmetric synthesis of α-amino acids through conjugate addition to unsaturated amino acids and the Petasis three-component coupling reaction. Additionally, α-amino acid derivatives with organoboron functionality on the side-chain have been prepared and used in metal-catalyzed cross-coupling reactions to prepare cross-linked amino acids and complex cyclic peptide natural products.
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44
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Chrétien JM, Zammattio F, Gauthier D, Le Grognec E, Paris M, Quintard JP. Preparation of Allyltin Reagents Grafted on Solid Support: Clean and Easily Recyclable Reagents for Allylation of Aldehydes. Chemistry 2006; 12:6816-28. [PMID: 16755634 DOI: 10.1002/chem.200501595] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The preparation of polymer-supported allyltin reagents was shown to be possible for both unfunctionalized and functionalized allyl units. These reagents were treated with aldehydes in the presence of cerium(III) or indium(III) salts to afford high yields of homoallylic alcohols, practically uncontaminated with organotin residues (less than 5 ppm). Some mechanism aspects are briefly discussed and the potential for regeneration and reuse of these supported reagents is pointed out.
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Affiliation(s)
- Jean-Mathieu Chrétien
- Laboratoire de Synthèse Organique, UMR 6513, Faculté des Sciences et des Techniques, Université de Nantes, CNRS, 2 rue de la Houssinière, BP 92208, 44322 Nantes cedex 3, France
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45
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Huang Y, Qing FL. Novel Fluorous Glycol Derivatives for the Immobilization of Boronic Acids. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/qsar.200640045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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46
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Krajnc P, Leber N, Brown JF, Cameron NR. Hydroxy-derivatised emulsion templated porous polymers (PolyHIPEs): Versatile supports for solid and solution phase organic synthesis. REACT FUNCT POLYM 2006. [DOI: 10.1016/j.reactfunctpolym.2005.07.023] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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47
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Jourdan H, Gouhier G, Van Hijfte L, Angibaud P, Piettre SR. On the use of boronates in the Petasis reaction. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.09.060] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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48
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Qin Y, Sukul V, Pagakos D, Cui C, Jäkle F. Preparation of Organoboron Block Copolymers via ATRP of Silicon and Boron-Functionalized Monomers. Macromolecules 2005. [DOI: 10.1021/ma051615p] [Citation(s) in RCA: 103] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yang Qin
- Department of Chemistry, Rutgers University Newark, 73 Warren Street, Newark, New Jersey 07102
| | - Vishad Sukul
- Department of Chemistry, Rutgers University Newark, 73 Warren Street, Newark, New Jersey 07102
| | - Dimitrios Pagakos
- Department of Chemistry, Rutgers University Newark, 73 Warren Street, Newark, New Jersey 07102
| | - Chengzhong Cui
- Department of Chemistry, Rutgers University Newark, 73 Warren Street, Newark, New Jersey 07102
| | - Frieder Jäkle
- Department of Chemistry, Rutgers University Newark, 73 Warren Street, Newark, New Jersey 07102
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49
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Spange S, Hofmann K, Walfort B, Rüffer T, Lang H. Chiral 1,2- and 1,3-Diol-Functionalized Chromophores as Lego Building Blocks for Coupled Structures. J Org Chem 2005; 70:8564-7. [PMID: 16209609 DOI: 10.1021/jo051097g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chiral nitroanilines containing 1,2- or 1,3-diol functionalities have been synthesized by nucleophilic aromatic substitution of fluoronitroanilines with 1-aminopropane-2,3-diols and 2-aminopropane-1,3-diol in the melt. X-ray structure analyses confirm retention of the configuration of the chiral center. The novel chromophores are suitable to link reversibly to various substituted arylboronic acids which allows the construction of new solvatochromic sensor molecules suitable to response to solvent and anion coordination by fluoride. The solvatochromism of the new compounds has been studied using the Kamlet-Taft LSE relationship.
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Affiliation(s)
- Stefan Spange
- Department of Polymer Chemistry, Institute of Chemistry, Chemnitz University of Technology, 09111 Chemnitz, Germany.
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50
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Wang CY, Meng WD, Huang YG, Qing FL. The synthesis and application of fluorous boronates without perfluorinated solvents. J Fluor Chem 2005. [DOI: 10.1016/j.jfluchem.2004.12.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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