1
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Foubelo F, Nájera C, Retamosa MG, Sansano JM, Yus M. Catalytic asymmetric synthesis of 1,2-diamines. Chem Soc Rev 2024; 53:7983-8085. [PMID: 38990173 DOI: 10.1039/d3cs00379e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
The asymmetric catalytic synthesis of 1,2-diamines has received considerable interest, especially in the last ten years, due to their presence in biologically active compounds and their applications for the development of synthetic building blocks, chiral ligands and organocatalysts. Synthetic strategies based on C-N bond-forming reactions involve mainly (a) ring opening of aziridines and azabenzonorbornadienes, (b) hydroamination of allylic amines, (c) hydroamination of enamines and (d) diamination of olefins. In the case of C-C bond-forming reactions are included (a) the aza-Mannich reaction of imino esters, imino nitriles, azlactones, isocyano acetates, and isothiocyanates with imines, (b) the aza-Henry reaction of nitroalkanes with imines, (c) imine-imine coupling reactions, and (d) reductive coupling of enamines with imines, and (e) [3+2] cycloaddition with imines. C-H bond forming reactions include hydrogenation of CN bonds and C-H amination reactions. Other catalytic methods include desymmetrization reactions of meso-diamines.
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Affiliation(s)
- Francisco Foubelo
- Departamento de Química Orgánica and Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain.
| | - Carmen Nájera
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain.
| | - Ma Gracia Retamosa
- Departamento de Química Orgánica and Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain.
| | - José M Sansano
- Departamento de Química Orgánica and Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain.
| | - Miguel Yus
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain.
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2
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Cristofori V, Illuminati D, Bisquoli C, Catani M, Compagnin G, Turrin G, Trapella C, Fantinati A. Enzymatic Desymmetrisation of Prochiral meso-1,2-Disubstituted-1,2-Diaminoethane for the Synthesis of Key Enantioenriched (-)-Nutlin-3 Precursor. Molecules 2024; 29:3267. [PMID: 39064846 PMCID: PMC11279714 DOI: 10.3390/molecules29143267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Revised: 07/01/2024] [Accepted: 07/08/2024] [Indexed: 07/28/2024] Open
Abstract
Herein we present the biocatalysed preparation of a mono-N-carbamate-protected precursor of antitumoral Nutlin-3a through enantioselective alkoxycarbonylation of meso-1,2-disubstituted-1,2-diaminoethane using enzyme lipases and dialkyl carbonates as acylating agents. A series of supported or free lipase enzymes were screened in combination with commercially available diallyl, diethyl and dimethyl carbonates. The reactions were conducted at different temperatures, for different reaction times and with variable co-solvent systems to evaluate the effects on the enzyme catalytic activity. The best results in terms of conversion, enantiomeric excess and yield were obtained when lipase from Candida antarctica B (CAL-B) was used with diallyl carbonate (DAC) when conducting the reaction solventless at 75 °C.
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Affiliation(s)
- Virginia Cristofori
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via Luigi Borsari, 46, 44121 Ferrara, Italy; (V.C.); (C.B.); (M.C.); (G.C.)
| | - Davide Illuminati
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 213/d, 41125 Modena, Italy;
| | - Chiara Bisquoli
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via Luigi Borsari, 46, 44121 Ferrara, Italy; (V.C.); (C.B.); (M.C.); (G.C.)
| | - Martina Catani
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via Luigi Borsari, 46, 44121 Ferrara, Italy; (V.C.); (C.B.); (M.C.); (G.C.)
| | - Greta Compagnin
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via Luigi Borsari, 46, 44121 Ferrara, Italy; (V.C.); (C.B.); (M.C.); (G.C.)
| | - Giulia Turrin
- Department of Environmental and Prevention Sciences, University of Ferrara, Corso Ercole I d’Este, 32, 44121 Ferrara, Italy; (G.T.); (A.F.)
| | - Claudio Trapella
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via Luigi Borsari, 46, 44121 Ferrara, Italy; (V.C.); (C.B.); (M.C.); (G.C.)
| | - Anna Fantinati
- Department of Environmental and Prevention Sciences, University of Ferrara, Corso Ercole I d’Este, 32, 44121 Ferrara, Italy; (G.T.); (A.F.)
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3
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Huang J, Li T, Lu X, Ma D. Copper-Catalyzed α-Arylation of Nitroalkanes with (Hetero)aryl Bromides/Iodides. Angew Chem Int Ed Engl 2024; 63:e202315994. [PMID: 38151905 DOI: 10.1002/anie.202315994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 12/21/2023] [Accepted: 12/27/2023] [Indexed: 12/29/2023]
Abstract
α-Aryl substituted nitroalkanes are valuable synthetic building blocks that can be easily converted into α-aryl substituted aldehydes, ketones, carboxylic acids, as well as amines. Herein, an efficient Cu/oxalamide-catalyzed coupling between nitroalkanes and (hetero)aryl halides (Br, I) was developed to direct access highly diverse α-aryl substituted nitroalkanes. Compared with the current state of art, this protocol is more environmentally friendly and practical for synthetic chemists. This approach is characterized by a broad substrate scope on both nitroalkane part (primary nitroalkanes and nitromethane) and sp2 halide part ((hetero)aryl bromides/iodides and alkenyl bromides/iodides). The excellent functional group tolerance was observed, which would enable real world synthetic applications. More importantly, TON of current transformation reached to 3640, when some aryl iodides were used as coupling partners. This represents currently the highest catalyst turnover for transition-metal catalyzed α-arylation of nitroalkanes. Furthermore, the successful application in late-stage modification of complex molecules and synthesis of a known retinoid X receptor (RXR) antagonist exemplified its synthetic potential.
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Affiliation(s)
- Jianqiang Huang
- Shenzhen Key Laboratory of Cross-Coupling Reactions, Southern University of Science and Technology (SUSTech), Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, China
| | - Taian Li
- Shenzhen Key Laboratory of Cross-Coupling Reactions, Southern University of Science and Technology (SUSTech), Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, China
| | - Xiaobiao Lu
- Shenzhen Key Laboratory of Cross-Coupling Reactions, Southern University of Science and Technology (SUSTech), Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, China
| | - Dawei Ma
- Shenzhen Key Laboratory of Cross-Coupling Reactions, Southern University of Science and Technology (SUSTech), Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, China
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
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4
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Kumar R. Transition-Metal-Catalyzed 1,2-Diaminations of Olefins: Synthetic Methodologies and Mechanistic Studies. Chem Asian J 2024; 19:e202300705. [PMID: 37743249 DOI: 10.1002/asia.202300705] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 09/20/2023] [Accepted: 09/20/2023] [Indexed: 09/26/2023]
Abstract
1,2-Diamines are synthetically important motifs in organo-catalysis, natural products, and drug research. Continuous utilization of transition-metal based catalyst in direct 1,2-diamination of olefines, in contrast to metal-free transformations, with numerous impressive advances made in recent years (2015-2023). This review summarized contemporary research on the transition-metal catalyzed/mediated [e. g., Cu(II), Pd(II), Fe(II), Rh(III), Ir(III), and Co(II)] 1,2-diamination (asymmetric and non-asymmetric) especially emphasizing the recent synthetic methodologies and mechanistic understandings. Moreover, up-to-date discussion on (i) paramount role of oxidant and catalyst (ii) key achievements (iii) generality and uniqueness, (iv) synthetic limitations or future challenges, and (v) future opportunities are summarized related to this potential area.
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Affiliation(s)
- Ravinder Kumar
- Department of Chemistry, MMEC, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133207, Haryana, INDIA
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5
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Nagamalla S, Thomas AA, Nirpal AK, Mague JT, Sathyamoorthi S. Ring Opening of Aziridines by Pendant Sulfamates Allows for Regioselective and Stereospecific Preparation of Vicinal Diamines. J Org Chem 2023; 88:15989-16006. [PMID: 37903411 PMCID: PMC10799289 DOI: 10.1021/acs.joc.3c01731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2023]
Abstract
The ring opening of aziridines by pendant sulfamates is a viable strategy for the rapid preparation of vicinal diamines. Our reaction is compatible with both disubstituted cis- and trans-aziridines; unsubstituted, N-alkyl, and N-aryl sulfamates engage effectively. In all cases examined, the cyclization reaction is perfectly regioselective and stereospecific. Once activated, the product oxathiazinane heterocycles can be ring opened with a diverse range of nucleophiles.
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Affiliation(s)
- Someshwar Nagamalla
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas 66047, United States
| | - Annu Anna Thomas
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas 66047, United States
| | - Appasaheb K. Nirpal
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas 66047, United States
| | - Joel T. Mague
- Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
| | - Shyam Sathyamoorthi
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas 66047, United States
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6
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Wang H, Niu W, He Y, Wei Y, Li X, Lin YW. Synthesis of CF 3-Containing 2-Imidazolines and Imidazoles via a Iodide-Promoted [3 + 2] Cyclization Reaction. J Org Chem 2023; 88:15282-15287. [PMID: 37824681 DOI: 10.1021/acs.joc.3c01768] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
We report herein a general and effective system achieving cyclization of β-trifluoromethyl enones with amidines in the presence of 1,3-diiodo-5,5-dimethylhydantoin (DIH), which affords a range of trifluoromethylated 2-imidazolines in synthetically useful yields with good diastereoselectivities (up to 95% yield, up to 98:2 dr) and good functional group tolerance. Furthermore, the one-pot synthesis of trifluoromethylated imidazoles via sequential cyclization and oxidation is demonstrated. More significantly, the reaction mechanism was verified by ESI-MS studies of possible intermediates, and a reasonable reaction mechanism was proposed.
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Affiliation(s)
- Huamin Wang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang421001,P. R. China
| | - Wenjing Niu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang421001,P. R. China
| | - Yongjun He
- School of Chemistry and Chemical Engineering, University of South China, Hengyang421001,P. R. China
| | - Yibo Wei
- School of Chemistry and Chemical Engineering, University of South China, Hengyang421001,P. R. China
| | - Xianxian Li
- School of Chemistry and Chemical Engineering, University of South China, Hengyang421001,P. R. China
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering, University of South China, Hengyang421001,P. R. China
- Hengyang Medical College, University of South China, Hengyang 421001,P. R. China
- Laboratory of Protein Structure and Function, University of South China Medical School, Hengyang421001,P. R. China
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7
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Kumar R, Khanna Y, Kaushik P, Kamal R, Khokhar S. Recent Advancements on Metal-Free Vicinal Diamination of Alkenes: Synthetic Strategies and Mechanistic Insights. Chem Asian J 2023; 18:e202300017. [PMID: 36869415 DOI: 10.1002/asia.202300017] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/25/2023] [Accepted: 03/03/2023] [Indexed: 03/05/2023]
Abstract
The oxidative aminative vicinal difunctionalization of alkenes or related chemical feedstocks has emerged as sustainable and multipurpose strategies that can efficiently construct two -N bonds, and simultaneously prepare the synthetically fascinating molecules and catalysis in organic synthesis that typically required multi-step reactions. This review summarized the impressive breakthroughs on synthetic methodologies (2015-2022) documented especially over inter/intra-molecular vicinal diamination of alkenes with electron-rich or deficient diverse nitrogen sources. These unprecedented strategies predominantly involved iodine-based reagents/catalysts, which resent the interest of organic chemists due to their impressive role as flexible, non-toxic, and environmentally friendly reagents, resulting in a wide variety of synthetically useful organic molecules. Moreover, the information collected also describes the significant role of catalyst, terminal oxidant, substrate scope, synthetic applications, and their unsuccessful results to highlight the limitations. Special emphasis has been given to proposed mechanistic pathways to determine the key factors governing the issues of regioselectivity, enantioselectivity, and diastereoselectivity ratios.
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Affiliation(s)
- Ravinder Kumar
- Department of Chemistry, MMEC, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133207, Haryana (INDIA
| | - Yugam Khanna
- Department of Chemistry, MMEC, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133207, Haryana (INDIA
| | - Parul Kaushik
- Department of Chemistry, MMEC, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133207, Haryana (INDIA
| | - Raj Kamal
- Department of Chemistry, Kurukshetra University, Kurukshetra, 136119, Haryana, INDIA
| | - Shiwani Khokhar
- Department of Chemistry, Kurukshetra University, Kurukshetra, 136119, Haryana, INDIA
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8
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Smajlagic I, Johnston JN, Dudding T. Secondary Orbital Effect Involving Fluorine is Responsible for Substrate-Controlled Diastereodivergence in the Catalyzed syn-aza-Henry Reaction of α-Fluoronitroalkanes. Chemistry 2023; 29:e202204066. [PMID: 36607705 DOI: 10.1002/chem.202204066] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/05/2023] [Accepted: 01/06/2023] [Indexed: 01/07/2023]
Abstract
The fluorine atom is a powerful, yet enigmatic influence on chemical reactions. True to form, fluorine was recently discovered to effect diastereodivergence in an enantioselective aza-Henry reaction, resulting in a very rare case of syn-β-amino nitroalkane products. More bewildering was the observation of an apparent hierarchy of substituents within this substrate-controlled behavior: Ph>F>alkyl. These cases have now been examined comprehensively by computational methods, including both non-fluorinated and α-fluoro nitronate additions to aldimines catalyzed by a chiral bis(amidine) [BAM] proton complex. This study revealed the network of non-covalent interactions that dictate anti- (α-aryl) versus syn-selectivity (α-alkyl) using α-fluoronitronate nucleophiles, and an underlying secondary orbital interaction between fluorine and the activated azomethine.
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Affiliation(s)
- Ivor Smajlagic
- Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St., Catharines, ON L2S 3A1, Canada
| | - Jeffrey N Johnston
- Department of Chemistry and Institute of Chemical Biology, Vanderbilt University Nashville, Tennessee, 37235, USA
| | - Travis Dudding
- Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St., Catharines, ON L2S 3A1, Canada
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9
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New phosphinic and phosphonic acids: Synthesis, antidiabetic, anti-Alzheimer, antioxidant activity, DFT study and SARS-CoV-2 inhibition. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133701] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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10
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Sedzro DM, Idris MO, Durojaye OA, Yekeen AA, Fadahunsi AA, Alakanse SO. Identifying Potential p53‐MDM2 Interaction Antagonists: An Integrated Approach of Pharmacophore‐Based Virtual Screening, Interaction Fingerprinting, MD Simulation and DFT Studies. ChemistrySelect 2022. [DOI: 10.1002/slct.202202380] [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]
Affiliation(s)
- Divine Mensah Sedzro
- MOE Key Laboratory of Membraneless Organelle and Cellular Dynamics Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230027 China
- School of Life Sciences University of Science and Technology of China Hefei Anhui 230027 China
| | - Mukhtar Oluwaseun Idris
- School of Life Sciences University of Science and Technology of China Hefei Anhui 230027 China
| | - Olanrewaju Ayodeji Durojaye
- MOE Key Laboratory of Membraneless Organelle and Cellular Dynamics Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230027 China
- School of Life Sciences University of Science and Technology of China Hefei Anhui 230027 China
- Department of Chemical Sciences Coal City University, Emene Enugu State Nigeria
- ACAII BIOHEALTH LTD, Ikotun Lagos State Nigeria
| | - Abeeb Abiodun Yekeen
- School of Life Sciences University of Science and Technology of China Hefei Anhui 230027 China
| | - Adeola Abraham Fadahunsi
- Graduate School of Biomedical Engineering (GSBSE) University of Maine Orono ME 04469 USA
- Department of Oncology the First Affiliated Hospital of USTC Division of Life Sciences and Medicine University of Science and Technology of China Hefei Anhui 230027 China
- School of Information Science and Technology University of Science and Technology of China Hefei Anhui 230027 China
| | - Suleiman Oluwaseun Alakanse
- School of Life Sciences University of Science and Technology of China Hefei Anhui 230027 China
- Department of Biochemistry Faculty of Life Sciences University of Ilorin Ilorin Kwara State Nigeria
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11
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Bing JA, Schley ND, Johnston JN. Fluorine-induced diastereodivergence discovered in an equally rare enantioselective syn-aza-Henry reaction. Chem Sci 2022; 13:2614-2623. [PMID: 35356677 PMCID: PMC8890141 DOI: 10.1039/d1sc05910f] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 02/03/2022] [Indexed: 11/21/2022] Open
Abstract
Attention to the aza-Henry reaction, particularly over the past two decades, has resulted in a wide range of effective catalysts for the enantio- and diastereoselective versions, driven by the versatility of the β-amino nitroalkane products as precursors to secondary amines and vic-diamines. Despite this broad effort, syn-diastereoselective variants are exceedingly rare. We have discovered a subset of α-fluoro nitroalkane additions that are characterized by an unusual crossover in diastereoselection, often delivering the products with high selectivities. We report here a rigorous comparative analysis of non-fluorinated and α-fluoro nitroalkanes in their additions to azomethines. Both homogeneous and heterogeneous catalysis were applied to probe the possibility that this phenomenon might be more widely operative in the enantioselective additions of fluorine-substituted carbon nucleophiles. A complete correlation within four categories is described that uncovered a clear trend, while revealing a dramatic and distinct reversal of diastereoselection that would normally go undetected.
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Affiliation(s)
- Jade A Bing
- Department of Chemistry, Vanderbilt Institute of Chemical Biology, Vanderbilt University Nashville Tennessee 37235-1822 USA
| | - Nathan D Schley
- Department of Chemistry, Vanderbilt Institute of Chemical Biology, Vanderbilt University Nashville Tennessee 37235-1822 USA
| | - Jeffrey N Johnston
- Department of Chemistry, Vanderbilt Institute of Chemical Biology, Vanderbilt University Nashville Tennessee 37235-1822 USA
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12
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Cheng X, Chen R, Zhou T, Zhang B, Li Z, Gao M, Huang Y, Liu H, Su Z. Leveraging the multivalent p53 peptide-MdmX interaction to guide the improvement of small molecule inhibitors. Nat Commun 2022; 13:1087. [PMID: 35228542 PMCID: PMC8885691 DOI: 10.1038/s41467-022-28721-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 01/27/2022] [Indexed: 12/21/2022] Open
Abstract
Overexpressed Mdm2 and its 7homolog MdmX impair p53 activity in many cancers. Small molecules mimicking a p53 peptide can effectively inhibit Mdm2 but not MdmX. Here, we show a strategy for improving lead compounds for Mdm2 and MdmX inhibition based on the multivalency of the p53 peptide. Crystal structures of MdmX complexed with nutlin-3a, a strong Mdm2 inhibitor but a weak one for MdmX, reveal that nutlin-3a fits into the ligand binding pocket of MdmX mimicking the p53 peptide. However, due to distinct flexibility around the MdmX ligand binding pocket, the structures are missing many important intermolecular interactions that exist in the MdmX/p53 peptide and Mdm2/nultin-3a complexes. By targeting these flexible regions, we identify allosteric and additive fragments that enhance the binding affinity of nutlin-3a for MdmX, leading to potent Mdm2/MdmX inhibitors with anticancer activity. Our work provides a practical approach to drug design for signal transduction therapy. Peptide fragments derived from the interfaces of protein-protein interactions (PPIs) provide useful templates for designing small molecule PPI inhibitors. Here, the authors utilize the multivalency of an MdmX-binding p53 peptide to develop a weak inhibitor of MdmX into potent Mdm2/MdmX inhibitors.
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13
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Arylation of nitromethane with sterically hindered aryl halides. Russ Chem Bull 2022. [DOI: 10.1007/s11172-022-3376-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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14
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Luxenburger A, Bougen-Zhukov N, Fraser MG, Beetham H, Harris LD, Schmidt D, Cameron SA, Guilford PJ, Evans GB. Discovery of AL-GDa62 as a Potential Synthetic Lethal Lead for the Treatment of Gastric Cancer. J Med Chem 2021; 64:18114-18142. [PMID: 34878770 DOI: 10.1021/acs.jmedchem.1c01609] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Diffuse gastric cancer and lobular breast cancer are aggressive malignancies that are frequently associated with inactivating mutations in the tumor suppressor gene CDH1. Synthetic lethal (SL) vulnerabilities arising from CDH1 dysfunction represent attractive targets for drug development. Recently, SLEC-11 (1) emerged as a SL lead in E-cadherin-deficient cells. Here, we describe our efforts to optimize 1. Overall, 63 analogues were synthesized and tested for their SL activity toward isogenic mammary epithelial CDH1-deficient cells (MCF10A-CDH1-/-). Among the 26 compounds with greater cytotoxicity, AL-GDa62 (3) was four-times more potent and more selective than 1 with an EC50 ratio of 1.6. Furthermore, 3 preferentially induced apoptosis in CDH1-/- cells, and Cdh1-/- mammary and gastric organoids were significantly more sensitive to 3 at low micromolar concentrations. Thermal proteome profiling of treated MCF10A-CDH1-/- cell protein lysates revealed that 3 specifically inhibits TCOF1, ARPC5, and UBC9. In vitro, 3 inhibited SUMOylation at low micromolar concentrations.
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Affiliation(s)
- Andreas Luxenburger
- Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Rd, Lower Hutt 5040, New Zealand
| | - Nicola Bougen-Zhukov
- Cancer Genetics Laboratory, Department of Biochemistry, University of Otago, 710 Cumberland Street, Dunedin 9016, New Zealand
| | - Michael G Fraser
- Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Rd, Lower Hutt 5040, New Zealand
| | - Henry Beetham
- Cancer Genetics Laboratory, Department of Biochemistry, University of Otago, 710 Cumberland Street, Dunedin 9016, New Zealand
| | - Lawrence D Harris
- Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Rd, Lower Hutt 5040, New Zealand
| | - Dorian Schmidt
- Institute of Pharmacy, Christian-Albrechts-University of Kiel, Gutenbergstraße 76, D-24116 Kiel, Germany
| | - Scott A Cameron
- Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Rd, Lower Hutt 5040, New Zealand
| | - Parry J Guilford
- Cancer Genetics Laboratory, Department of Biochemistry, University of Otago, 710 Cumberland Street, Dunedin 9016, New Zealand
| | - Gary B Evans
- Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Rd, Lower Hutt 5040, New Zealand
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15
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Struble TJ, Smajlagic I, Foy H, Dudding T, Johnston JN. DFT-Based Stereochemical Rationales for the Bifunctional Brønsted Acid/Base-Catalyzed Diastereodivergent and Enantioselective aza-Henry Reactions of α-Nitro Esters. J Org Chem 2021; 86:15606-15617. [PMID: 34669416 DOI: 10.1021/acs.joc.1c02112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A pair of chiral bis(amidine) [BAM] proton complexes provide reagent (catalyst)-controlled, highly diastereo- and enantioselective direct aza-Henry reactions leading to α-alkyl-substituted α,β-diamino esters. A C2-symmetric ligand provides high anti-selectivity, while a nonsymmetric congener exhibits syn-selectivity in this example of diastereodivergent, enantioselective catalysis. A detailed computational analysis is reported for the first time, one that supports distinct models for selectivity resulting from the more hindered binding cavity of the C1-symmetric ligand. Binding in this congested pocket accommodates four hydrogen bond contacts among ligands and substrates, ultimately favoring a pre-syn arrangement highlighted by pyridinium-azomethine activation and quinolinium-nitronate activation. The complementary transition states reveal a wide range of alternatives. Comparing the C1- and C2-symmetric catalysts highlights distinct electrophile binding orientations despite their common hydrogen bond donor-acceptor features. Among the factors driving unusual high syn-diastereoselection are favorable dispersion forces that leverage the anthracenyl substituent of the C1-symmetric ligand.
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Affiliation(s)
- Thomas J Struble
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Ivor Smajlagic
- Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
| | - Hayden Foy
- Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
| | - Travis Dudding
- Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
| | - Jeffrey N Johnston
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, United States
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16
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Benbouguerra K, Chafai N, Chafaa S, Touahria YI, Tlidjane H. New α-Hydrazinophosphonic acid: Synthesis, characterization, DFT study and in silico prediction of its potential inhibition of SARS-CoV-2 main protease. J Mol Struct 2021; 1239:130480. [PMID: 33903777 PMCID: PMC8059216 DOI: 10.1016/j.molstruc.2021.130480] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 03/30/2021] [Accepted: 04/13/2021] [Indexed: 12/16/2022]
Abstract
A new α-Hydrazinophosphonic acid (HDZPA) has been synthesized and its molecular structure was determined using spectroscopic methods. The Density Functional Theory (DFT) at the B3LYP/6-31 G (d,p) level was utilized to determine the electronic properties, vibrational modes and active sites of the examined molecule. In this context, some quantum chemical parameters have been calculated in order to discuss the reactivity of the studied molecule. Also, the inhibition activity of the investigated α-Hydrazinophosphonic acid for SARS-CoV-2 main protease (Mpro) and RNA dependent RNA polymerase (RdRp) has been predicted using in silico docking.
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Affiliation(s)
- Khalissa Benbouguerra
- Laboratory of Electrochemistry of Molecular Materials and Complex (LEMMC). Department of Process Engineering, Faculty of Technology, University of Ferhat ABBAS Setif-1, El-Mabouda campus, 19000 Sétif, Algeria,Département de Sciences Agronomiques, Faculté des Sciences de la Nature et de la Vie et des Sciences de la Terre et de l'Univers, Université Mohamed El Bachir El Ibrahimi de Bordj Bou Arréridj El-Anasser, 34030, Algeria
| | - Nadjib Chafai
- Laboratory of Electrochemistry of Molecular Materials and Complex (LEMMC). Department of Process Engineering, Faculty of Technology, University of Ferhat ABBAS Setif-1, El-Mabouda campus, 19000 Sétif, Algeria,Corresponding author
| | - Salah Chafaa
- Laboratory of Electrochemistry of Molecular Materials and Complex (LEMMC). Department of Process Engineering, Faculty of Technology, University of Ferhat ABBAS Setif-1, El-Mabouda campus, 19000 Sétif, Algeria
| | - Youcef Islam Touahria
- Laboratory of Electrochemistry of Molecular Materials and Complex (LEMMC). Department of Process Engineering, Faculty of Technology, University of Ferhat ABBAS Setif-1, El-Mabouda campus, 19000 Sétif, Algeria
| | - Hamida Tlidjane
- Laboratory of Electrochemistry of Molecular Materials and Complex (LEMMC). Department of Process Engineering, Faculty of Technology, University of Ferhat ABBAS Setif-1, El-Mabouda campus, 19000 Sétif, Algeria
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17
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Han B, He XH, Liu YQ, He G, Peng C, Li JL. Asymmetric organocatalysis: an enabling technology for medicinal chemistry. Chem Soc Rev 2021; 50:1522-1586. [PMID: 33496291 DOI: 10.1039/d0cs00196a] [Citation(s) in RCA: 170] [Impact Index Per Article: 56.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The efficacy and synthetic versatility of asymmetric organocatalysis have contributed enormously to the field of organic synthesis since the early 2000s. As asymmetric organocatalytic methods mature, they have extended beyond the academia and undergone scale-up for the production of chiral drugs, natural products, and enantiomerically enriched bioactive molecules. This review provides a comprehensive overview of the applications of asymmetric organocatalysis in medicinal chemistry. A general picture of asymmetric organocatalytic strategies in medicinal chemistry is firstly presented, and the specific applications of these strategies in pharmaceutical synthesis are systematically described, with a focus on the preparation of antiviral, anticancer, neuroprotective, cardiovascular, antibacterial, and antiparasitic agents, as well as several miscellaneous bioactive agents. The review concludes with a discussion of the challenges, limitations and future prospects for organocatalytic asymmetric synthesis of medicinally valuable compounds.
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Affiliation(s)
- Bo Han
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Xiang-Hong He
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Yan-Qing Liu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Gu He
- State Key Laboratory of Biotherapy and Cancer Centre, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Jun-Long Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China. and Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China.
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18
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Claraz A, Djian A, Masson G. Electrochemical tandem trifluoromethylation of allylamines/formal (3 + 2)-cycloaddition for the rapid access to CF3-containing imidazolines and oxazolidines. Org Chem Front 2021. [DOI: 10.1039/d0qo01307b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A straightforward and environmentally friendly synthesis of CF3-containing imidazolines and oxazolidines has been developed through an electrochemical three-component reaction among allylamines, the Langlois reagent, and nitrile or carbonyl compounds.
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Affiliation(s)
- Aurélie Claraz
- Institut de Chimie des Substances Naturelles
- Université Paris Saclay
- CNRS
- UPR2301
- 91198 Gif-sur-Yvette cedex
| | - Aurélie Djian
- Institut de Chimie des Substances Naturelles
- Université Paris Saclay
- CNRS
- UPR2301
- 91198 Gif-sur-Yvette cedex
| | - Géraldine Masson
- Institut de Chimie des Substances Naturelles
- Université Paris Saclay
- CNRS
- UPR2301
- 91198 Gif-sur-Yvette cedex
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19
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Recent Synthetic Approaches towards Small Molecule Reactivators of p53. Biomolecules 2020; 10:biom10040635. [PMID: 32326087 PMCID: PMC7226499 DOI: 10.3390/biom10040635] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 04/13/2020] [Accepted: 04/15/2020] [Indexed: 12/26/2022] Open
Abstract
The tumor suppressor protein p53 is often called "the genome guardian" and controls the cell cycle and the integrity of DNA, as well as other important cellular functions. Its main function is to trigger the process of apoptosis in tumor cells, and approximately 50% of all cancers are related to the inactivation of the p53 protein through mutations in the TP53 gene. Due to the association of mutant p53 with cancer therapy resistance, different forms of restoration of p53 have been subject of intense research in recent years. In this sense, this review focus on the main currently adopted approaches for activation and reactivation of p53 tumor suppressor function, focusing on the synthetic approaches that are involved in the development and preparation of such small molecules.
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20
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Beloglazkina A, Zyk N, Majouga A, Beloglazkina E. Recent Small-Molecule Inhibitors of the p53-MDM2 Protein-Protein Interaction. Molecules 2020; 25:molecules25051211. [PMID: 32156064 PMCID: PMC7179467 DOI: 10.3390/molecules25051211] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 02/29/2020] [Accepted: 03/06/2020] [Indexed: 12/21/2022] Open
Abstract
This review presents the last decade of studies on the synthesis of various types of small-molecule inhibitors of the p53- Mouse double minute 2 homolog (MDM2) protein-protein interaction. The main focus is placed on synthetic approaches to such molecules, their cytotoxicity, and MDM2 binding characteristics.
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21
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Zuo Q, Shi Z, Zhan F, Wang Z, Lin JS, Jiang Y. TfOH-catalyzed formal [3+2] cycloaddition of N-tosylaziridine dicarboxylates and nitriles: Synthesis of tetrafunctionalized 2-imidazolines. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151576] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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22
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Faisca Phillips AM, Guedes da Silva MFC, Pombeiro AJL. The Stereoselective Nitro-Mannich Reaction in the Synthesis of Active Pharmaceutical Ingredients and Other Biologically Active Compounds. Front Chem 2020; 8:30. [PMID: 32047742 PMCID: PMC6997535 DOI: 10.3389/fchem.2020.00030] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 01/09/2020] [Indexed: 11/13/2022] Open
Abstract
The nitro-Mannich (aza-Henry) reaction, in which a nitroalkane and an imine react to form a β-nitroamine, is a versatile tool for target-oriented synthesis. Although the first stereoselective reaction was developed only 20 years ago, and enantioselective and diastereoselective versions for the synthesis of non-racemic compounds soon after, there are nowadays a variety of reliable methods which can be used for the synthesis of APIs and other biologically active substances. Hence many anticancer drugs, antivirals, antimicrobials, enzyme inhibitors and many more substances, containing C-N bonds, have been synthesized using this reaction. Several transition metal complexes and organocatalysts were shown to be compatible with the presence of a wide range of functional groups in these molecules, and very high levels of asymmetric induction have been achieved in some cases. The reaction has also been applied in cascade processes. The structural diversity of the products, ranging from simple heterocycles or azabicycles to complex alkaloids, iminosugars, amino acids or diamino acids and phosphonates, shows the versatility of the nitro-Mannich reaction and its potential for future developments.
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Affiliation(s)
| | | | - Armando J L Pombeiro
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
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23
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Romiti F, del Pozo J, Paioti PHS, Gonsales SA, Li X, Hartrampf FWW, Hoveyda AH. Different Strategies for Designing Dual-Catalytic Enantioselective Processes: From Fully Cooperative to Non-cooperative Systems. J Am Chem Soc 2019; 141:17952-17961. [DOI: 10.1021/jacs.9b05464] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Filippo Romiti
- Supramolecular Science and Engineering Institute, University of Strasbourg, CNRS, 67000 Strasbourg, France
| | - Juan del Pozo
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Paulo H. S. Paioti
- Supramolecular Science and Engineering Institute, University of Strasbourg, CNRS, 67000 Strasbourg, France
| | - Stella A. Gonsales
- Supramolecular Science and Engineering Institute, University of Strasbourg, CNRS, 67000 Strasbourg, France
| | - Xinghan Li
- Supramolecular Science and Engineering Institute, University of Strasbourg, CNRS, 67000 Strasbourg, France
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Felix W. W. Hartrampf
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Amir H. Hoveyda
- Supramolecular Science and Engineering Institute, University of Strasbourg, CNRS, 67000 Strasbourg, France
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
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24
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Wang B, Wu S, Liu J, Yang K, Xie H, Tang W. Development of selective small molecule MDM2 degraders based on nutlin. Eur J Med Chem 2019; 176:476-491. [DOI: 10.1016/j.ejmech.2019.05.046] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 05/16/2019] [Accepted: 05/16/2019] [Indexed: 01/22/2023]
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25
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Crocker MS, Foy H, Tokumaru K, Dudding T, Pink M, Johnston JN. Direct Observation and Analysis of the Halo-Amino-Nitro Alkane Functional Group. Chem 2019; 5:1248-1264. [PMID: 32766460 DOI: 10.1016/j.chempr.2019.03.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Conventional amide synthesis is a mainstay in discipline-spanning applications, and it is a reaction type that historically developed as a singular paradigm when considering the carbon-nitrogen bond-forming step. Umpolung amide synthesis (UmAS) exploits the unique properties of an α-halo nitroalkane in its reaction with an amine to produce an amide. The "umpolung" moniker reflects its paradigm-breaking C-N bond formation on the basis of evidence that the nucleophilic nitronate carbon and electrophilic nitrogen engage to form a tetrahedral intermediate (TI) that is an unprecedented functional group, a 1,1,1-halo-amino-nitro alkane (HANA). Studies probing HANA transience have failed to capture this (presumably) highly reactive intermediate. We report here the direct observation of a HANA, its conversion thermally to an amide functionality, and quantitative analysis of this process using computational techniques. These findings validate the HANA as a functional group common to UmAS and diverted UmAS, opening the door to its targeted use and creative manipulation.
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Affiliation(s)
- Michael S Crocker
- Department of Chemistry & Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37235-1822, USA
| | - Hayden Foy
- Department of Chemistry, Brock University, St. Catharines, ON, Canada
| | - Kazuyuki Tokumaru
- Department of Chemistry & Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37235-1822, USA
| | - Travis Dudding
- Department of Chemistry, Brock University, St. Catharines, ON, Canada
| | - Maren Pink
- Indiana University Molecular Structure Center, Bloomington, IN 47405, USA
| | - Jeffrey N Johnston
- Department of Chemistry & Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37235-1822, USA.,Lead Contact
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26
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L-tert-Leucine derived urea-ammonium salts: Efficient bifunctional phase transfer catalysts for highly diastereo- and enantioselective aza-Henry reaction of isatin-derived N-Boc ketimines with α-aryl nitromethanes. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.04.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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27
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Vishe M, Johnston JN. The inverted ketene synthon: a double umpolung approach to enantioselective β 2,3-amino amide synthesis. Chem Sci 2019; 10:1138-1143. [PMID: 30774911 PMCID: PMC6349014 DOI: 10.1039/c8sc04330b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 11/11/2018] [Indexed: 12/29/2022] Open
Abstract
A stereocontrolled synthesis of β2,3-amino amides is reported. Innovation is encapsulated by the first use of nitroalkenes to achieve double umpolung in enantioselective β-amino amide synthesis. Step economy is also fulfilled by the use of Umpolung Amide Synthesis (UmAS) in the second step, delivering the amide product without intermediacy of a carboxylic acid or activated derivative. Molybdenum oxide-mediated hydride reduction provides the anti-β2,3-amino amide with high selectivity.
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Affiliation(s)
- Mahesh Vishe
- Department of Chemistry , Vanderbilt Institute of Chemical Biology Vanderbilt University , Nashville , Tennessee 37235 , USA .
| | - Jeffrey N Johnston
- Department of Chemistry , Vanderbilt Institute of Chemical Biology Vanderbilt University , Nashville , Tennessee 37235 , USA .
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28
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Uraguchi D, Ooi T. Chemistry of Ammonium Betaines: Application to Ion-Pair Catalysis for Selective Organic Transformations. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.1144] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Daisuke Uraguchi
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University
| | - Takashi Ooi
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University
- CREST, Japan Science and Technology Agency (JST), Nagoya University
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29
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Bifunctional iminophosphorane superbases: Potent organocatalysts for enantio- and diastereoselective Michael addition reactions. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.06.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Bosica G, Zammit R. One-pot multicomponent nitro-Mannich reaction using a heterogeneous catalyst under solvent-free conditions. PeerJ 2018; 6:e5065. [PMID: 29967735 PMCID: PMC6026460 DOI: 10.7717/peerj.5065] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 06/03/2018] [Indexed: 11/26/2022] Open
Abstract
An environmentally-friendly, one-pot multicomponent reaction of various aldehydes, amines and nitroalkanes for the synthesis of β-nitroamines is here described. Amberlyst A-21 supported CuI was found to be a highly efficient novel heterogeneous catalyst for the three-component nitro-Mannich reaction between aldehydes, amines and nitroalkanes. The developed protocol is performed in a solvent-free medium to produce a variety of β-nitroamines in good to excellent yields within short reaction times. The catalyst can be easily prepared and recovered. It has been tested up to eight times with only a minor activity loss.
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Affiliation(s)
| | - Ramon Zammit
- Department of Chemistry, University of Malta, Msida, Malta
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31
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Liu Y, Wei Z, Liu Y, Wang J, Cao J, Liang D, Duan H, Lin Y. Chiral Phase-transfer Catalysts Bearing Multiple Hydrogen-bonding Donors Derived from Amino Acids: Efficient Catalysts for Diastereo- and Enantioselective Nitro-Mannich Reaction. Chem Res Chin Univ 2018. [DOI: 10.1007/s40242-018-8005-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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32
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Saison-Ridinger M, DelGiorno KE, Zhang T, Kraus A, French R, Jaquish D, Tsui C, Erikson G, Spike BT, Shokhirev MN, Liddle C, Yu RT, Downes M, Evans RM, Saghatelian A, Lowy AM, Wahl GM. Reprogramming pancreatic stellate cells via p53 activation: A putative target for pancreatic cancer therapy. PLoS One 2017; 12:e0189051. [PMID: 29211796 PMCID: PMC5718507 DOI: 10.1371/journal.pone.0189051] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 11/19/2017] [Indexed: 12/18/2022] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is characterized by an extremely dense fibrotic stroma, which contributes to tumor growth, metastasis, and drug resistance. During tumorigenesis, quiescent pancreatic stellate cells (PSCs) are activated and become major contributors to fibrosis, by increasing growth factor signaling and extracellular matrix deposition. The p53 tumor suppressor is known to restrict tumor initiation and progression through cell autonomous mechanisms including apoptosis, cell cycle arrest, and senescence. There is growing evidence that stromal p53 also exerts anti-tumor activity by paracrine mechanisms, though a role for stromal p53 in PDAC has not yet been described. Here, we demonstrate that activation of stromal p53 exerts anti-tumor effects in PDAC. We show that primary cancer-associated PSCs (caPSCs) isolated from human PDAC express wild-type p53, which can be activated by the Mdm2 antagonist Nutlin-3a. Our work reveals that p53 acts as a major regulator of PSC activation and as a modulator of PDAC fibrosis. In vitro, p53 activation by Nutlin-3a induces profound transcriptional changes, which reprogram activated PSCs to quiescence. Using immunofluorescence and lipidomics, we have also found that p53 activation induces lipid droplet accumulation in both normal and tumor-associated fibroblasts, revealing a previously undescribed role for p53 in lipid storage. In vivo, treatment of tumor-bearing mice with the clinical form of Nutlin-3a induces stromal p53 activation, reverses caPSCs activation, and decreases fibrosis. All together our work uncovers new functions for stromal p53 in PDAC.
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Affiliation(s)
- Maya Saison-Ridinger
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, California, United States of America
| | - Kathleen E. DelGiorno
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, California, United States of America
| | - Tejia Zhang
- Clayton Foundation Peptide Biology Lab, Helmsley Center for Genomic Medicine, Salk Institute for Biological Studies, La Jolla, California, United States of America
| | - Annabelle Kraus
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, California, United States of America
| | - Randall French
- Department of Surgery, Division of Surgical Oncology, Moores Cancer Center, University of California, San Diego, La Jolla, California, United States of America
| | - Dawn Jaquish
- Department of Surgery, Division of Surgical Oncology, Moores Cancer Center, University of California, San Diego, La Jolla, California, United States of America
| | - Crystal Tsui
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, California, United States of America
| | - Galina Erikson
- Integrative Genomics and Bioinformatics Core, Salk Institute for Biological Studies, La Jolla, California, United States of America
| | - Benjamin T. Spike
- Huntsman Cancer Institute, Department of Oncologic Sciences, University of Utah, Salt Lake City Utah, United States of America
| | - Maxim N. Shokhirev
- Integrative Genomics and Bioinformatics Core, Salk Institute for Biological Studies, La Jolla, California, United States of America
| | - Christopher Liddle
- Storr Liver Centre, Westmead Institute for Medical Research and Sydney Medical School, University of Sydney, Westmead Hospital, Westmead, New South Wales, Australia
| | - Ruth T. Yu
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, California, United States of America
| | - Michael Downes
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, California, United States of America
| | - Ronald M. Evans
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, California, United States of America
| | - Alan Saghatelian
- Clayton Foundation Peptide Biology Lab, Helmsley Center for Genomic Medicine, Salk Institute for Biological Studies, La Jolla, California, United States of America
| | - Andrew M. Lowy
- Department of Surgery, Division of Surgical Oncology, Moores Cancer Center, University of California, San Diego, La Jolla, California, United States of America
| | - Geoffrey M. Wahl
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, California, United States of America
- * E-mail:
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33
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Javorskis T, Orentas E. Chemoselective Deprotection of Sulfonamides Under Acidic Conditions: Scope, Sulfonyl Group Migration, and Synthetic Applications. J Org Chem 2017; 82:13423-13439. [DOI: 10.1021/acs.joc.7b02507] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tomas Javorskis
- Department of Organic Chemistry, Vilnius University, Naugarduko 24, 03225 Vilnius, Lithuania
| | - Edvinas Orentas
- Department of Organic Chemistry, Vilnius University, Naugarduko 24, 03225 Vilnius, Lithuania
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34
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Fantinati A, Bianco S, Cristofori V, Cavazzini A, Catani M, Zanirato V, Pacifico S, Rimondi E, Milani D, Voltan R, Secchiero P, Trapella C. Expeditious Synthesis and Biological Characterization of Enantio-Enriched (-)-Nutlin-3. ChemistrySelect 2017. [DOI: 10.1002/slct.201701059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Anna Fantinati
- Department of Chemical and Pharmaceutical Sciences and LTTA center; University of Ferrara; Via Fossato di Mortara,17 I-44121 Ferrara Italy
| | - Sara Bianco
- Department of Chemical and Pharmaceutical Sciences and LTTA center; University of Ferrara; Via Fossato di Mortara,17 I-44121 Ferrara Italy
| | - Virginia Cristofori
- Department of Chemical and Pharmaceutical Sciences and LTTA center; University of Ferrara; Via Fossato di Mortara,17 I-44121 Ferrara Italy
| | - Alberto Cavazzini
- Department of Chemical and Pharmaceutical Sciences and LTTA center; University of Ferrara; Via Fossato di Mortara,17 I-44121 Ferrara Italy
| | - Martina Catani
- Department of Chemical and Pharmaceutical Sciences and LTTA center; University of Ferrara; Via Fossato di Mortara,17 I-44121 Ferrara Italy
| | - Vinicio Zanirato
- Department of Chemical and Pharmaceutical Sciences and LTTA center; University of Ferrara; Via Fossato di Mortara,17 I-44121 Ferrara Italy
| | - Salvatore Pacifico
- Department of Chemical and Pharmaceutical Sciences and LTTA center; University of Ferrara; Via Fossato di Mortara,17 I-44121 Ferrara Italy
| | - Erika Rimondi
- Department of Morphology, Surgery, Experimental Medicine and LTTA center; University of Ferrara; I-44121 Ferrara Italy
| | - Daniela Milani
- Department of Morphology, Surgery, Experimental Medicine and LTTA center; University of Ferrara; I-44121 Ferrara Italy
| | - Rebecca Voltan
- Department of Morphology, Surgery, Experimental Medicine and LTTA center; University of Ferrara; I-44121 Ferrara Italy
| | - Paola Secchiero
- Department of Morphology, Surgery, Experimental Medicine and LTTA center; University of Ferrara; I-44121 Ferrara Italy
| | - Claudio Trapella
- Department of Chemical and Pharmaceutical Sciences and LTTA center; University of Ferrara; Via Fossato di Mortara,17 I-44121 Ferrara Italy
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35
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MDM2 Antagonists Counteract Drug-Induced DNA Damage. EBioMedicine 2017; 24:43-55. [PMID: 29030058 PMCID: PMC5652019 DOI: 10.1016/j.ebiom.2017.09.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 09/12/2017] [Accepted: 09/14/2017] [Indexed: 12/16/2022] Open
Abstract
Antagonists of MDM2-p53 interaction are emerging anti-cancer drugs utilized in clinical trials for malignancies that rarely mutate p53, including melanoma. We discovered that MDM2-p53 antagonists protect DNA from drug-induced damage in melanoma cells and patient-derived xenografts. Among the tested DNA damaging drugs were various inhibitors of Aurora and Polo-like mitotic kinases, as well as traditional chemotherapy. Mitotic kinase inhibition causes mitotic slippage, DNA re-replication, and polyploidy. Here we show that re-replication of the polyploid genome generates replicative stress which leads to DNA damage. MDM2-p53 antagonists relieve replicative stress via the p53-dependent activation of p21 which inhibits DNA replication. Loss of p21 promoted drug-induced DNA damage in melanoma cells and enhanced anti-tumor activity of therapy combining MDM2 antagonist with mitotic kinase inhibitor in mice. In summary, MDM2 antagonists may reduce DNA damaging effects of anti-cancer drugs if they are administered together, while targeting p21 can improve the efficacy of such combinations.
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36
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Lu N, Li R, Wei Z, Cao J, Liang D, Lin Y, Duan H. Enantio- and Diastereoselective Nitro-Mannich Reaction of α-Aryl Nitromethanes with Amidosulfones Catalyzed by Phase-Transfer Catalysts. J Org Chem 2017; 82:4668-4676. [DOI: 10.1021/acs.joc.7b00306] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ning Lu
- Department of Organic Chemistry,
College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Ruxu Li
- Department of Organic Chemistry,
College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Zhonglin Wei
- Department of Organic Chemistry,
College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Jungang Cao
- Department of Organic Chemistry,
College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Dapeng Liang
- Department of Organic Chemistry,
College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Yingjie Lin
- Department of Organic Chemistry,
College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Haifeng Duan
- Department of Organic Chemistry,
College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
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37
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Norsikian S, Beretta M, Cannillo A, Auvray M, Martin A, Retailleau P, Iorga BI, Beau JM. Stereoselective Synthesis of 1,2-trans
-Diamines Using the Three-Component Borono-Mannich Condensation - Reaction Scope and Mechanistic Insights. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700089] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Stéphanie Norsikian
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud; Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif sur Yvette France
| | - Margaux Beretta
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud; Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif sur Yvette France
| | - Alexandre Cannillo
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud; Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif sur Yvette France
| | - Marie Auvray
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud; Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif sur Yvette France
| | - Amélie Martin
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud; Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif sur Yvette France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud; Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif sur Yvette France
| | - Bogdan I. Iorga
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud; Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif sur Yvette France
| | - Jean-Marie Beau
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud; Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif sur Yvette France
- Laboratoire de Synthèse de Biomolécules; Institut de Chimie Moléculaire et des Matériaux d'Orsay; Univ. Paris-Sud and CNRS; Université Paris-Saclay; 91405 Orsay France
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38
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Chen JQ, Yu WL, Wei YL, Li TH, Xu PF. Photoredox-Induced Functionalization of Alkenes for the Synthesis of Substituted Imidazolines and Oxazolidines. J Org Chem 2016; 82:243-249. [DOI: 10.1021/acs.joc.6b02377] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jian-Qiang Chen
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Wan-Lei Yu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Yun-Long Wei
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Teng-Hui Li
- The High School Attached to Northwest Normal University, Lanzhou, 730000, P. R. China
| | - Peng-Fei Xu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, P. R. China
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39
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Vara BA, Johnston JN. Enantioselective Synthesis of β-Fluoro Amines via β-Amino α-Fluoro Nitroalkanes and a Traceless Activating Group Strategy. J Am Chem Soc 2016; 138:13794-13797. [PMID: 27749040 PMCID: PMC5453840 DOI: 10.1021/jacs.6b07731] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Preparation of a range of enantioenriched β-fluoro amines (α,β-disubstituted) is described in which the nitrogen and fluorine atoms are attached to sp3-hybridized carbons. The key finding is a chiral bifunctional Brønsted acid/base catalyst that can deliver β-amino-α-fluoro nitroalkanes with high enantio- and diastereoselection. A denitration step renders the nitro group "traceless" and delivers secondary, tertiary, or vinyl alkyl fluorides embedded within a vicinal fluoro amine functional group. A synthesis of each possible stereoisomer of a β-fluoro lanicemine illustrates the potential ease with which fluorinated small molecules relevant to neuroscience drug development can be prepared in a stereochemically comprehensive manner.
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Affiliation(s)
- Brandon A. Vara
- Department of Chemistry & Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37235-1822
| | - Jeffrey N. Johnston
- Department of Chemistry & Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37235-1822
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40
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Ellsworth AA, Magyar CL, Hubbell GE, Theisen CC, Holmes D, Mosey RA. One-pot triflic anhydride-mediated synthesis of 1,2-disubstituted 2-imidazolines from N-(2-haloethyl)amides and amines. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.08.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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41
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Marcantoni E, Petrini M. Recent Developments in the Stereoselective Synthesis of Nitrogen-Containing Heterocycles usingN-Acylimines as Reactive Substrates. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600644] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Enrico Marcantoni
- School of Science and Technology; Chemistry Division; Università di Camerino; via S. Agostino 1 62032 Camerino Italy
| | - Marino Petrini
- School of Science and Technology; Chemistry Division; Università di Camerino; via S. Agostino 1 62032 Camerino Italy
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42
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Orcel U, Waser J. One-Pot Three-Component Synthesis of Vicinal Diamines via In Situ Aminal Formation and Carboamination. Angew Chem Int Ed Engl 2016; 55:12881-5. [DOI: 10.1002/anie.201607318] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Ugo Orcel
- Institut des sciences et ingénierie chimiques; Ecole Polytechnique Fédérale de Lausanne; EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
| | - Jerome Waser
- Institut des sciences et ingénierie chimiques; Ecole Polytechnique Fédérale de Lausanne; EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
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43
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Orcel U, Waser J. One-Pot Three-Component Synthesis of Vicinal Diamines via In Situ Aminal Formation and Carboamination. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607318] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ugo Orcel
- Institut des sciences et ingénierie chimiques; Ecole Polytechnique Fédérale de Lausanne; EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
| | - Jerome Waser
- Institut des sciences et ingénierie chimiques; Ecole Polytechnique Fédérale de Lausanne; EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
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44
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Yang J, Farley AJM, Dixon DJ. Enantioselective bifunctional iminophosphorane catalyzed sulfa-Michael addition of alkyl thiols to unactivated β-substituted-α,β-unsaturated esters. Chem Sci 2016; 8:606-610. [PMID: 28451207 PMCID: PMC5358540 DOI: 10.1039/c6sc02878k] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 09/02/2016] [Indexed: 11/29/2022] Open
Abstract
The highly enantioselective sulfa-Michael addition of alkyl thiols to unactivated β-substituted-α,β-unsaturated esters catalyzed by a bifunctional iminophosphorane (BIMP) organocatalyst is described.
The highly enantioselective sulfa-Michael addition of alkyl thiols to unactivated β-substituted-α,β-unsaturated esters catalyzed by a bifunctional iminophosphorane (BIMP) organocatalyst is described. The low acidity of the alkyl thiol pro-nucleophiles is overcome by the high Brønsted basicity of the catalyst and the chiral scaffold/thiourea hydrogen-bond donor moiety provides the required enantiofacial discrimination in the addition step. The reaction is broad in scope with respect to the alkyl thiol and β-substituent of the α,β-unsaturated ester, affords sulfa-Michael adducts in excellent yields (up to >99%) and enantioselectivity (up to 97 : 3 er) and can operate down to 1 mol% catalyst loading.
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Affiliation(s)
- Jinchao Yang
- Department of Chemistry , Chemistry Research Laboratory , University of Oxford , 12 Mansfield Road , Oxford , UK .
| | - Alistair J M Farley
- Department of Chemistry , Chemistry Research Laboratory , University of Oxford , 12 Mansfield Road , Oxford , UK .
| | - Darren J Dixon
- Department of Chemistry , Chemistry Research Laboratory , University of Oxford , 12 Mansfield Road , Oxford , UK .
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45
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Lu G, Zheng F, Wang L, Guo Y, Li X, Cao X, Wang C, Chi H, Dong Y, Zhang Z. Asymmetric Henry reaction catalyzed by Cu(II)-based chiral amino alcohol complexes with C2-symmetry. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.tetasy.2016.06.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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46
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Chumnanvej N, Katrun P, Pohmakotr M, Reutrakul V, Soorukram D, Kuhakarn C. Nitration-Oximization of Styrene Derivatives withtert-Butyl Nitrite: Synthesis ofα-Nitrooximes. CHINESE J CHEM 2016. [DOI: 10.1002/cjoc.201600167] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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47
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Taimoory SM, Dudding T. An Evolving Insight into Chiral H-Bond Catalyzed Aza-Henry Reactions: A Cooperative Role for Noncovalent Attractive Interactions Unveiled by Density Functional Theory. J Org Chem 2016; 81:3286-95. [PMID: 27008440 DOI: 10.1021/acs.joc.6b00248] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The role of cooperative effects arising from noncovalent attractive interactions as a vital factor governing stereoinduction in chiral H-bond catalyzed aza-Henry reactions is reported. Supporting this finding were density functional theory (DFT) calculations which revealed a shape and size dependency existed between the catalyst and substrates that when matched lead to high enantioselectivity, as reflected by favorable activation parameters. Associated with optimal catalyst and substrate pairing were a closed catalytic binding pocket and a synclinal orientation of the substrates that reinforced favorable stereoelectronic effects and dispersive type forces. Meanwhile, unfavorable steric interactions were found to be a dominant effect controlling diastereoselection.
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Affiliation(s)
| | - Travis Dudding
- Brock University , 1812 Sir Isaac Brock Way, St. Catharines, ON, L2S 3A1 Canada
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48
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Tsukanov SV, Johnson MD, May SA, Rosemeyer M, Watkins MA, Kolis SP, Yates MH, Johnston JN. Development of an Intermittent-Flow Enantioselective Aza-Henry Reaction Using an Arylnitromethane and Homogeneous Brønsted Acid-Base Catalyst with Recycle. Org Process Res Dev 2016; 20:215-226. [PMID: 27065720 PMCID: PMC4821467 DOI: 10.1021/acs.oprd.5b00245] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A stereoselective aza-Henry reaction between an arylnitromethane and Boc-protected aryl aldimine using a homogeneous Brønsted acid-base catalyst was translated from batch format to an automated intermittent-flow process. This work demonstrates the advantages of a novel intermittent-flow setup with product crystallization and slow reagent addition which is not amenable to the standard continuous equipment: plug flow tube reactor (PFR) or continuous stirred tank reactor (CSTR). A significant benefit of this strategy was the integration of an organocatalytic enantioselective reaction with straightforward product separation, including recycle of the catalyst, resulting in increased intensity of the process by maintaining high catalyst concentration in the reactor. A continuous campaign confirmed that these conditions could effectively provide high throughput of material using an automated system while maintaining high selectivity, thereby addressing nitroalkane safety and minimizing catalyst usage.
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Affiliation(s)
- Sergey V. Tsukanov
- Small Molecule Design and Development, Eli Lilly and Company, Indianapolis, Indiana 46285, Unites States
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Martin D. Johnson
- Small Molecule Design and Development, Eli Lilly and Company, Indianapolis, Indiana 46285, Unites States
| | - Scott A. May
- Small Molecule Design and Development, Eli Lilly and Company, Indianapolis, Indiana 46285, Unites States
| | - Morgan Rosemeyer
- Small Molecule Design and Development, Eli Lilly and Company, Indianapolis, Indiana 46285, Unites States
| | - Michael A. Watkins
- Small Molecule Design and Development, Eli Lilly and Company, Indianapolis, Indiana 46285, Unites States
| | - Stanley P. Kolis
- Small Molecule Design and Development, Eli Lilly and Company, Indianapolis, Indiana 46285, Unites States
| | - Matthew H. Yates
- Small Molecule Design and Development, Eli Lilly and Company, Indianapolis, Indiana 46285, Unites States
| | - Jeffrey N. Johnston
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, United States
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49
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Gao X, Han J, Wang L. Tartrate-derived iminophosphorane catalyzed asymmetric hydroxymethylation of 3-substituted oxindoles with paraformaldehyde. Org Chem Front 2016. [DOI: 10.1039/c6qo00074f] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Chiral iminophosphoranes organocatalyzed the enantioselective synthesis of 3-hydroxymethyl-2-oxindoles in 81–98% yields and up to 94% ee under mild conditions. Of note is that readily available and easily usable paraformaldehyde was employed as a hydroxymethylation C1 unit in the reaction.
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Affiliation(s)
- Xing Gao
- Key Laboratory of Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis
| | - Jianwei Han
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis
- Shanghai Institute of Organic Chemistry
- The Chinese Academy of Sciences
- Shanghai
- P. R. China
| | - Limin Wang
- Key Laboratory of Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
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50
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Farley AJM, Sandford C, Dixon DJ. Bifunctional Iminophosphorane Catalyzed Enantioselective Sulfa-Michael Addition to Unactivated α-Substituted Acrylate Esters. J Am Chem Soc 2015; 137:15992-5. [DOI: 10.1021/jacs.5b10226] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alistair J. M. Farley
- The Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Christopher Sandford
- The Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Darren J. Dixon
- The Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
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