1
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Freiberg KM, Kavthe RD, Thomas RM, Fialho DM, Dee P, Scurria M, Lipshutz BH. Direct formation of amide/peptide bonds from carboxylic acids: no traditional coupling reagents, 1-pot, and green. Chem Sci 2023; 14:3462-3469. [PMID: 37006678 PMCID: PMC10055766 DOI: 10.1039/d3sc00198a] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023] Open
Abstract
Technology for generating especially important amide and peptide bonds from carboxylic acids and amines that avoids traditional coupling reagents is described. The 1-pot processes developed rely on thioester formation, neat, using a simple dithiocarbamate, and are safe and green, and rely on Nature-inspired thioesters that are then converted to the targeted functionality.
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Affiliation(s)
- Kaitlyn M Freiberg
- Department of Chemistry and Biochemistry, University of California Santa Barbara CA 93106 USA
| | - Rahul D Kavthe
- Department of Chemistry and Biochemistry, University of California Santa Barbara CA 93106 USA
| | - Rohan M Thomas
- Department of Chemistry and Biochemistry, University of California Santa Barbara CA 93106 USA
| | - David M Fialho
- Department of Chemistry and Biochemistry, University of California Santa Barbara CA 93106 USA
| | - Paris Dee
- Department of Chemistry and Biochemistry, University of California Santa Barbara CA 93106 USA
| | - Matthew Scurria
- Department of Chemistry and Biochemistry, University of California Santa Barbara CA 93106 USA
| | - Bruce H Lipshutz
- Department of Chemistry and Biochemistry, University of California Santa Barbara CA 93106 USA
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2
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Wang HQ, Huang ZY, Yue DW, Wang FZ, Li CH. A variable-stiffness and healable pneumatic actuator. MATERIALS HORIZONS 2023; 10:908-917. [PMID: 36541242 DOI: 10.1039/d2mh01056a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Pneumatic-powered actuators are receiving increasing attention due to their widespread applications. However, their inherent low stiffness makes them incompetent in tasks requiring high load capacity or high force output. On the other hand, soft pneumatic actuators are susceptible to damage caused by over-pressuring or punctures by sharp objects. In this work, we designed and synthesized a coordination adaptable network (PETMP-AIM-Cu) with high mechanical rigidity (Young's modulus of 1.9 GPa and elongation <2% before fracturing) as well as excellent variable stiffness property (soft-rigid switching ability σ as high as 3 268 000 when ΔT = 90 °C). Combining PETMP-AIM-Cu with a self-healing elastomer based on dynamic disulfide bonds (LP-PDMS), we fabricated a new pneumatic actuator which shows high load capacity at room temperature, but can also easily deform upon heating and thus can be actuated pneumatically. Benefiting from the excellent self-healing ability of PETMP-AIM-Cu and LP-PDMS, the entire pneumatic actuator can still be actuated after being cut and healed. Such a variable-stiffness and healable pneumatic actuator would be useful for complex environmental applications.
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Affiliation(s)
- Hong-Qin Wang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, P. R. China.
| | - Zi-Yang Huang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, P. R. China.
| | - De-Wei Yue
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, P. R. China.
| | - Fang-Zhou Wang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, P. R. China.
| | - Cheng-Hui Li
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, P. R. China.
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3
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Taheri-Ledari R, Qazi FS, Saeidirad M, Maleki A. A diselenobis-functionalized magnetic catalyst based on iron oxide/silica nanoparticles suggested for amidation reactions. Sci Rep 2022; 12:14865. [PMID: 36050366 PMCID: PMC9436994 DOI: 10.1038/s41598-022-19030-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 08/23/2022] [Indexed: 11/18/2022] Open
Abstract
In this study, a new heterogeneous magnetic catalytic system based on selenium-functionalized iron oxide nanoparticles is presented and suggested for facilitating amide/peptide bonds formation. The prepared nanocatalyst, entitled as "Fe3O4/SiO2-DSBA" (DSBA stands for 2,2'-diselanediylbis benzamide), has been precisely characterized for identifying its physicochemical properties. As the most brilliant point, the catalytic performance of the designed system can be mentioned, where only a small amount of Fe3O4/SiO2-DSBA (0.25 mol%) has resulted in 89% reaction yield, under a mild condition. Also, given high importance of green chemistry, convenient catalyst particles separation from the reaction medium through its paramagnetic property (ca. 30 emu·g-1) should be noticed. This particular property provided a substantial opportunity to recover the catalyst particles and successfully reuse them for at least three successive times. Moreover, due to showing other excellences, such as economic benefits and nontoxicity, the presented catalytic system is recommended to be scaled up and exploited in the industrial applications.
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Affiliation(s)
- Reza Taheri-Ledari
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran
| | - Fateme Sadat Qazi
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran
| | - Mahdi Saeidirad
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran
| | - Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran.
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4
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Taheri-Ledari R, Asl FR, Saeidirad M, Kashtiaray A, Maleki A. Convenient synthesis of dipeptide structures in solution phase assisted by a thioaza functionalized magnetic nanocatalyst. Sci Rep 2022; 12:4719. [PMID: 35304475 PMCID: PMC8933478 DOI: 10.1038/s41598-022-07303-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 02/16/2022] [Indexed: 12/14/2022] Open
Abstract
In this study, a heterogeneous nanocatalyst is presented that is capable to efficiently catalyze the synthetic reactions of amide bond formation between the amino acids. This nanocatalyst which is named Fe3O4@SiO2/TABHA (TABHA stands for thio-aza-bicyclo-hepten amine), was composed of several layers that increased the surface area to be functionalized with 2-aminothiazole rings via Diels-Alder approach. Firstly, various analytic methods such as Fourier-transform infrared (FTIR) and energy-dispersive X-ray (EDX) spectroscopic methods, thermogravimetric analysis (TGA), electron microscopy (EM), and UV-vis diffuse reflectance spectroscopy (UV-DRS) have been used to characterize the desired structure of the Fe3O4@SiO2/TABHA catalyst. Afterward, the application of the presented catalytic system has been studied in the peptide bond formation reactions. Due to the existence of a magnetic core in the structure of the nanocatalyst, the nanoparticles (NPs) could be easily separated from the reaction medium by an external magnet. This special feature has been corroborated by the obtained results from vibrating-sample magnetometer (VSM) analysis that showed 24 emu g-1 magnetic saturation for the catalytic system. Amazingly, a small amount of Fe3O4@SiO2/TABHA particles (0.2 g) has resulted in ca. 90% efficiency in catalyzing the peptide bond formation at ambient temperature, over 4 h. Also, this nanocatalyst has demonstrated an acceptable recycling ability, where ca. 76% catalytic performance has been observed after four recycles. Due to high convenience in the preparation, application, and recyclization processes, and also because of lower cost than the traditional coupling reagents (like TBTU), the presented catalytic system is recommended for the industrial utilization.
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Affiliation(s)
- Reza Taheri-Ledari
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran
| | - Fereshteh Rasouli Asl
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran
| | - Mahdi Saeidirad
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran
| | - Amir Kashtiaray
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran
| | - Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran.
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5
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Handoko, Panigrahi NR, Arora PS. Two-Component Redox Organocatalyst for Peptide Bond Formation. J Am Chem Soc 2022; 144:3637-3643. [DOI: 10.1021/jacs.1c12798] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Handoko
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
| | - Nihar R. Panigrahi
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
| | - Paramjit S. Arora
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
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6
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Su J, Mo J, Chen X, Umanzor A, Zhang Z, Houk KN, Zhao J. Generation of Oxyphosphonium Ions by Photoredox/Cobaloxime Catalysis for Scalable Amide and Peptide Synthesis in Batch and Continuous‐Flow. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202112668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Junqi Su
- Zhang Dayu School of Chemistry Dalian University of Technology Dalian 116024 P. R. China
| | - Jia‐Nan Mo
- Zhang Dayu School of Chemistry Dalian University of Technology Dalian 116024 P. R. China
| | - Xiangyang Chen
- Department of Chemistry and Biochemistry University of California, Los Angeles Los Angeles CA 90095 USA
| | - Alexander Umanzor
- Department of Chemistry and Biochemistry University of California, Los Angeles Los Angeles CA 90095 USA
| | - Zheng Zhang
- Zhang Dayu School of Chemistry Dalian University of Technology Dalian 116024 P. R. China
| | - Kendall N. Houk
- Department of Chemistry and Biochemistry University of California, Los Angeles Los Angeles CA 90095 USA
| | - Jiannan Zhao
- Zhang Dayu School of Chemistry Dalian University of Technology Dalian 116024 P. R. China
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7
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Su J, Mo JN, Chen X, Umanzor A, Zhang Z, Houk KN, Zhao J. Generation of Oxyphosphonium Ions by Photoredox/Cobaloxime Catalysis for Scalable Amide and Peptide Synthesis in Batch and Continuous-Flow. Angew Chem Int Ed Engl 2021; 61:e202112668. [PMID: 34783121 DOI: 10.1002/anie.202112668] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 10/30/2021] [Indexed: 01/15/2023]
Abstract
Phosphine-mediated deoxygenative nucleophilic substitutions, such as the Mitsunobu reaction, are of great importance in organic synthesis. However, the conventional protocols require stoichiometric oxidants to trigger the formation of the oxyphosphonium intermediates for the subsequent nucleophilic additions. Through dual catalysis of photoredox and cobaloxime, we realized a radical strategy for the catalytic formation of acyloxyphosphonium ions that enables direct amidation. The deoxygenative protocol exhibits a broad scope and has been used in the late-stage amidation of drug molecules. In addition to batch reactions, a continuous-flow reactor was developed, enabling rapid peptide synthesis on gram scale. The successful assembly of a tetrapeptide on the solid support further demonstrated the versatility of this photocatalytic system. Moreover, experimental and computational studies are consistent with the hypothesis of acyloxyphosphonium ions being formed as the key intermediates.
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Affiliation(s)
- Junqi Su
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Jia-Nan Mo
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Xiangyang Chen
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Alexander Umanzor
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Zheng Zhang
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Kendall N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Jiannan Zhao
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, 116024, P. R. China
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8
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Bukya H, Nayani K, Gangireddy P, Mainkar PS. Benzoisothiazolone (BIT): A Fast, Efficient, and Recyclable Redox Reagent for Solid Phase Peptide Synthesis. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000722] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Hemalatha Bukya
- Department of Organic Synthesis and Process Chemistry CSIR‐Indian Institute of Chemical Technology 500007 Hyderabad India
- National Institute of Pharmaceutical Education and Research (NIPER) 500037 Hyderabad India
| | - Kiranmai Nayani
- Department of Organic Synthesis and Process Chemistry CSIR‐Indian Institute of Chemical Technology 500007 Hyderabad India
| | - Pavankumar Gangireddy
- National Institute of Pharmaceutical Education and Research (NIPER) 500037 Hyderabad India
- NSJ Prayog Life Sciences 500007 Hyderabad India
| | - Prathama S. Mainkar
- Department of Organic Synthesis and Process Chemistry CSIR‐Indian Institute of Chemical Technology 500007 Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR) 201002 Ghaziabad India
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9
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Taheri‐Ledari R, Maleki A. Antimicrobial therapeutic enhancement of levofloxacin via conjugation to a cell‐penetrating peptide: An efficient sonochemical catalytic process. J Pept Sci 2020; 26:e3277. [DOI: 10.1002/psc.3277] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 07/11/2020] [Accepted: 07/15/2020] [Indexed: 11/07/2022]
Affiliation(s)
- Reza Taheri‐Ledari
- Catalysts and Organic Synthesis Research Laboratory, Department of ChemistryIran University of Science and Technology Tehran Iran
| | - Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory, Department of ChemistryIran University of Science and Technology Tehran Iran
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10
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Lou J, Wang Q, Wu P, Wang H, Zhou YG, Yu Z. Transition-metal mediated carbon-sulfur bond activation and transformations: an update. Chem Soc Rev 2020; 49:4307-4359. [PMID: 32458881 DOI: 10.1039/c9cs00837c] [Citation(s) in RCA: 148] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Carbon-sulfur bond cross-coupling has become more and more attractive as an alternative protocol to establish carbon-carbon and carbon-heteroatom bonds. Diverse transformations through transition-metal-catalyzed C-S bond activation and cleavage have recently been developed. This review summarizes the advances in transition-metal-catalyzed cross-coupling via carbon-sulfur bond activation and cleavage since late 2012 as an update of the critical review on the same topic published in early 2013 (Chem. Soc. Rev., 2013, 42, 599-621), which is presented by the categories of organosulfur compounds, that is, thioesters, thioethers including heteroaryl, aryl, vinyl, alkyl, and alkynyl sulfides, ketene dithioacetals, sulfoxides including DMSO, sulfones, sulfonyl chlorides, sulfinates, thiocyanates, sulfonium salts, sulfonyl hydrazides, sulfonates, thiophene-based compounds, and C[double bond, length as m-dash]S functionality-bearing compounds such as thioureas, thioamides, and carbon disulfide, as well as the mechanistic insights. An overview of C-S bond cleavage reactions with stoichiometric transition-metal reagents is briefly given. Theoretical studies on the reactivity of carbon-sulfur bonds by DFT calculations are also discussed.
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Affiliation(s)
- Jiang Lou
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China. and University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Quannan Wang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China. and University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Ping Wu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China. and University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Hongmei Wang
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, P. R. China.
| | - Yong-Gui Zhou
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China.
| | - Zhengkun Yu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China. and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, P. R. China
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11
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Handoko, Satishkumar S, Panigrahi NR, Arora PS. Rational Design of an Organocatalyst for Peptide Bond Formation. J Am Chem Soc 2019; 141:15977-15985. [PMID: 31508947 DOI: 10.1021/jacs.9b07742] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Amide bonds are ubiquitous in peptides, proteins, pharmaceuticals, and polymers. The formation of amide bonds is a straightforward process: amide bonds can be synthesized with relative ease because of the availability of efficient coupling agents. However, there is a substantive need for methods that do not require excess reagents. A catalyst that condenses amino acids could have an important impact by reducing the significant waste generated during peptide synthesis. We describe the rational design of a biomimetic catalyst that can efficiently couple amino acids featuring standard protecting groups. The catalyst design combines lessons learned from enzymes, peptide biosynthesis, and organocatalysts. Under optimized conditions, 5 mol % catalyst efficiently couples Fmoc amino acids without notable racemization. Importantly, we demonstrate that the catalyst is functional for the synthesis of oligopeptides on solid phase. This result is significant because it illustrates the potential of the catalyst to function on a substrate with a multitude of amide bonds, which may be expected to inhibit a hydrogen-bonding catalyst.
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Affiliation(s)
- Handoko
- Department of Chemistry New York University , New York , New York 10003 , United States
| | - Sakilam Satishkumar
- Department of Chemistry New York University , New York , New York 10003 , United States
| | - Nihar R Panigrahi
- Department of Chemistry New York University , New York , New York 10003 , United States
| | - Paramjit S Arora
- Department of Chemistry New York University , New York , New York 10003 , United States
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12
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Maleki A, Taheri-Ledari R, Rahimi J, Soroushnejad M, Hajizadeh Z. Facile Peptide Bond Formation: Effective Interplay between Isothiazolone Rings and Silanol Groups at Silver/Iron Oxide Nanocomposite Surfaces. ACS OMEGA 2019; 4:10629-10639. [PMID: 31460161 PMCID: PMC6649058 DOI: 10.1021/acsomega.9b00986] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Accepted: 05/17/2019] [Indexed: 05/08/2023]
Abstract
Proportional to considerable progress in protein-drug conjugations, attention to the efficient peptide coupling reagents is being increased. Hence, in this study, a versatile heterogeneous nanoscale reagent is presented for chemical, biological, and medical purposes. A combination of silver and silica-coated iron oxide nanoparticles (Ag/Fe3O4) has been well functionalized with isothiazolone rings via a silver-modified Heck mechanism. An appropriate condition is provided for peptide bond formation through the surface interplay between silanol groups and the loaded isothiazolone rings. A logical mechanism including a series of successive covalent bonds onto the surface of Ag/Fe3O4 nanocomposites is suggested for this catalyzed peptide bond formation. Accurate comparisons have been made to obtain the optimum value of the nanocatalyst and suitable conditions. As an additional application, the biological activity of the desired product has also been investigated through antibacterial assay tests. The results showed that our desired product could also be used as an effective heterogeneous nanoscale antibacterial agent for different purposes. In this regard, all of the essential structural and practical analyses have been carried out and precisely interpreted.
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Affiliation(s)
- Ali Maleki
- E-mail: . Tel: +98 21 73228313. Fax: +98 21 73021584
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13
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Pickel TC, Akondi SM, Liebeskind LS. Esterification by Redox Dehydration Using Diselenides as Catalytic Organooxidants. J Org Chem 2019; 84:4954-4960. [PMID: 30742771 DOI: 10.1021/acs.joc.8b02765] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ortho-functionalized aryl diselenides are catalytic (5.0 mol %) oxidants for the construction of esters from carboxylic acids and alcohols in the presence of stoichiometric triethyl phosphite and dioxygen in air as the terminal redox reagents (redox dehydration conditions). The reaction proceeds through the intermediacy of the anhydride and requires the presence of 10% DMAP to drive the esterification.
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Affiliation(s)
- Thomas C Pickel
- Department of Chemistry , Emory University , 1515 Dickey Drive , Atlanta , Georgia 30322 , United States
| | - Srirama Murthy Akondi
- Department of Chemistry , Emory University , 1515 Dickey Drive , Atlanta , Georgia 30322 , United States
| | - Lanny S Liebeskind
- Department of Chemistry , Emory University , 1515 Dickey Drive , Atlanta , Georgia 30322 , United States
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14
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Liu Z, Huang F, Wu P, Wang Q, Yu Z. Amide Bond Formation Assisted by Vicinal Alkylthio Migration in Enaminones: Metal- and CO-Free Synthesis of α,β-Unsaturated Amides. J Org Chem 2018; 83:5731-5750. [DOI: 10.1021/acs.joc.8b00775] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Zhuqing Liu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Fei Huang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, People’s Republic of China
- College of Pharmacy, Nanjing Tech University, Nanjing 211800, People’s Republic of China
| | - Ping Wu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Quannan Wang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Zhengkun Yu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, People’s Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, People’s Republic of China
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15
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Akondi SM, Gangireddy P, Pickel TC, Liebeskind LS. Aerobic, Diselenide-Catalyzed Redox Dehydration: Amides and Peptides. Org Lett 2018; 20:538-541. [PMID: 29323920 DOI: 10.1021/acs.orglett.7b03620] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
At 2.5 mol % loadings using reaction temperatures between 30-55 °C, ortho-functionalized diaryl diselenides are highly effective organocatalytic oxidants for aerobic redox dehydrative amidic and peptidic bond formation using triethyl phosphite as a simple terminal reductant. This simple-to-perform organocatalytic reaction relies on the ability of selenols to react directly with dioxygen in air without recourse to metal catalysts. It represents an important step toward the development of a general, economical, and benign catalytic redox dehydration protocol.
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Affiliation(s)
- Srirama Murthy Akondi
- Department of Chemistry, Emory University , 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Pavankumar Gangireddy
- Department of Chemistry, Emory University , 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Thomas C Pickel
- Department of Chemistry, Emory University , 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Lanny S Liebeskind
- Department of Chemistry, Emory University , 1515 Dickey Drive, Atlanta, Georgia 30322, United States
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16
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Mane RS, Bhanage BM. Ligand-Assisted Pd-Catalyzed N-Dealkylative Carbonylation of Tertiary Amines with (Hetero)Aryl Halides to Tertiary Amides. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700574] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Rajendra S. Mane
- Department of Chemistry; Institute of Chemical Technology; Mumbai 400019 India
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17
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Gangireddy P, Patro V, Lam L, Morimoto M, Liebeskind LS. Mechanism of Acylative Oxidation–Reduction–Condensation Reactions Using Benzoisothiazolones as Oxidant and Triethylphosphite as Stoichiometric Reductant. J Org Chem 2017; 82:3513-3529. [DOI: 10.1021/acs.joc.7b00020] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pavankumar Gangireddy
- Emory University, Department of Chemistry, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Vidyavathi Patro
- Emory University, Department of Chemistry, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Leighann Lam
- Emory University, Department of Chemistry, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Mariko Morimoto
- Emory University, Department of Chemistry, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Lanny S. Liebeskind
- Emory University, Department of Chemistry, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
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Shyshkanov SA, Orlov NV. Design of Selenium-Based Chiral Chemical Probes for Simultaneous Enantio- and Chemosensing of Chiral Carboxylic Acids with Remote Stereogenic Centers by NMR Spectroscopy. Chemistry 2016; 22:15458-15467. [DOI: 10.1002/chem.201602884] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Sergey A. Shyshkanov
- Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; Leninsky Prospekt, 47 Moscow 119991 Russia
| | - Nikolai V. Orlov
- Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; Leninsky Prospekt, 47 Moscow 119991 Russia
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