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Patel JJ, Blackburn T, Alessi M, Sawinski H, Snieckus V. Tetraethylphosphorodiamidate-Directed Metalation Group: Directed Ortho and Remote Metalation, Cross Coupling, and Remote Phospha Anionic Fries Rearrangement Reactions. Org Lett 2020; 22:3860-3864. [DOI: 10.1021/acs.orglett.0c01123] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jignesh J. Patel
- Department of Chemistry, Queen’s University, Kingston K7L 3N6, ON, Canada
| | - Thomas Blackburn
- Department of Chemistry, Queen’s University, Kingston K7L 3N6, ON, Canada
| | - Manlio Alessi
- Department of Chemistry, Queen’s University, Kingston K7L 3N6, ON, Canada
| | - Hannah Sawinski
- Department of Chemistry, Queen’s University, Kingston K7L 3N6, ON, Canada
| | - Victor Snieckus
- Department of Chemistry, Queen’s University, Kingston K7L 3N6, ON, Canada
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2
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Zhang Z, Wang S, Hu C, Ma N, Zhang G, Liu Q. Copper(I)-catalyzed benzylic C(sp3)–H geminal difunctionalization: Successive oxidative intramolecular amidation and hydroxylation. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.11.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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3
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Discovery of a novel allosteric inhibitor scaffold for polyadenosine-diphosphate-ribose polymerase 14 (PARP14) macrodomain 2. Bioorg Med Chem 2018; 26:2965-2972. [PMID: 29567296 PMCID: PMC6008491 DOI: 10.1016/j.bmc.2018.03.020] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 03/09/2018] [Accepted: 03/10/2018] [Indexed: 01/08/2023]
Abstract
The polyadenosine-diphosphate-ribose polymerase 14 (PARP14) has been implicated in DNA damage response pathways for homologous recombination. PARP14 contains three (ADP ribose binding) macrodomains (MD) whose exact contribution to overall PARP14 function in pathology remains unclear. A medium throughput screen led to the identification of N-(2(-9H-carbazol-1-yl)phenyl)acetamide (GeA-69, 1) as a novel allosteric PARP14 MD2 (second MD of PARP14) inhibitor. We herein report medicinal chemistry around this novel chemotype to afford a sub-micromolar PARP14 MD2 inhibitor. This chemical series provides a novel starting point for further development of PARP14 chemical probes.
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Deutsch A, Jessen C, Deutsch C, Karaghiosoff K, Hoffmann-Röder A. One-Pot Synthesis of Substituted Trifluoromethylated 2,3-Dihydro-1H-imidazoles. Org Lett 2016; 18:3474-7. [PMID: 27359260 DOI: 10.1021/acs.orglett.6b01672] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An operationally simple one-pot reaction for the preparation of a novel class of racemic trifluoromethylated 2,3-dihydro-1H-imidazoles derived from electron-poor N,O-acetals and aryl Grignard reagents is described. In addition, access to highly functionalized 2-trifluoromethyl-2,3-dihydro-1H-imidazoles was accomplished by reaction of N-aryl hemiaminal ethers and N-aryl trifluoroethylamines in the presence of an excess of n-butyllithium.
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Affiliation(s)
- Amrei Deutsch
- Center for Integrated Protein Science Munich (CIPSM) at the Department of Chemistry, Ludwig-Maximilians-University , Butenandtstr. 5-13, 81377 Munich, Germany
| | - Christoph Jessen
- Center for Integrated Protein Science Munich (CIPSM) at the Department of Chemistry, Ludwig-Maximilians-University , Butenandtstr. 5-13, 81377 Munich, Germany
| | - Carl Deutsch
- Medicinal Chemistry, Merck KGaA, Frankfurter Str. 250, 64293 Darmstadt, Germany
| | - Konstantin Karaghiosoff
- Center for Integrated Protein Science Munich (CIPSM) at the Department of Chemistry, Ludwig-Maximilians-University , Butenandtstr. 5-13, 81377 Munich, Germany
| | - Anja Hoffmann-Röder
- Center for Integrated Protein Science Munich (CIPSM) at the Department of Chemistry, Ludwig-Maximilians-University , Butenandtstr. 5-13, 81377 Munich, Germany
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Johnson T, Luo B, Lautens M. Palladium(II)-Catalyzed Enantioselective Synthesis of α-(Trifluoromethyl)arylmethylamines. J Org Chem 2016; 81:4923-30. [DOI: 10.1021/acs.joc.6b00657] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Thomas Johnson
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Bo Luo
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Mark Lautens
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
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6
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Deutsch A, Wagner C, Deutsch C, Hoffmann-Röder A. Convenient Access to Di- and Trifluoroethylamines for Lead Structure Research. European J Org Chem 2016. [DOI: 10.1002/ejoc.201501576] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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7
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Raje S, Gurusamy S, Koner A, Mehrotra S, Jennifer SJ, Vasudev PG, Butcher RJ, Angamuthu R. Multicomponent One-pot Reactions Towards the Synthesis of Stereoisomers of Dipicolylamine Complexes. Chem Asian J 2015; 11:128-35. [PMID: 26415522 DOI: 10.1002/asia.201500889] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Indexed: 11/11/2022]
Abstract
Reported are multi-component one-pot syntheses of chiral complexes [M(L(R) OR')Cl2 ] or [M(L(R) SR')Cl2 ] from the mixture of an N-substituted ethylenediamine, pyridine-2-carboxaldehyde, a primary alcohol or thiol and MCl2 utilizing in-situ formed cyclized Schiff bases where a C-O bond, two stereocenters, and three C-N bonds are formed (M=Zn, Cu, Ni, Cd; R=Et, Ph; R'=Me, Et, nPr, nBu). Tridentate ligands L(R) OR' and L(R) SR' comprise two chiral centers and a hemiaminal ether or hemiaminal thioether moiety on the dipicolylamine skeleton. Syn-[Zn(L(Ph) OMe)Cl2 ] precipitates out readily from the reaction mixture as a major product whereas anti-[Zn(L(Ph) OMe)Cl2 ] stays in solution as minor product. Both syn-[Zn(L(Ph) OMe)Cl2 ] and anti-[Zn(L(Ph) OMe)Cl2 ] were characterized using NMR spectroscopy and mass spectrometry. Solid-state structures revealed that syn-[Zn(L(Ph) OMe)Cl2 ] adopted a square pyramidal geometry while anti-[Zn(L(Ph) OMe)Cl2 ] possesses a trigonal bipyramidal geometry around the Zn centers. The scope of this method was shown to be wide by varying the components of the dynamic coordination assembly, and the structures of the complexes isolated were confirmed by NMR spectroscopy, mass spectrometry, and X-ray crystallography. Syn complexes were isolated as major products with Zn(II) and Cu(II) , and anti complexes were found to be major products with Ni(II) and Cd(II) . Hemiaminals and hemiaminal ethers are known to be unstable and are seldom observed as part of cyclic organic compounds or as coordinated ligands assembled around metals. It is now shown, with the support of experimental results, that linear hemiaminal ethers or thioethers can be assembled without the assistance of Lewis acidic metals in the multi-component assembly, and a possible pathway of the formation of hemiaminal ethers has been proposed.
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Affiliation(s)
- Sakthi Raje
- Laboratory of Inorganic Synthesis and Bioinspired Catalysis (LISBIC), Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Sureshbabu Gurusamy
- Laboratory of Inorganic Synthesis and Bioinspired Catalysis (LISBIC), Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Abhishek Koner
- Laboratory of Inorganic Synthesis and Bioinspired Catalysis (LISBIC), Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Sonam Mehrotra
- Laboratory of Inorganic Synthesis and Bioinspired Catalysis (LISBIC), Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Samson Jegan Jennifer
- Laboratory of Inorganic Synthesis and Bioinspired Catalysis (LISBIC), Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Prema G Vasudev
- Metabolic and Structural Biology Division, CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow, 226015, India
| | - Ray J Butcher
- Department of Chemistry, Howard University, Washington, D.C., 20059, USA
| | - Raja Angamuthu
- Laboratory of Inorganic Synthesis and Bioinspired Catalysis (LISBIC), Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India.
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Jørgensen KB, Rantanen T, Dörfler T, Snieckus V. Directed Metalation-Suzuki-Miyaura Cross-Coupling Strategies: Regioselective Synthesis of Hydroxylated 1-Methyl-phenanthrenes. J Org Chem 2015; 80:9410-24. [PMID: 26301487 DOI: 10.1021/acs.joc.5b01300] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A general, efficient, and regioselective synthesis of a series of hydroxylated 1-methylphenanthrenes 9 by a combined directed ortho metalation (DoM)-Suzuki-Miyaura cross-coupling-directed remote metalation (DreM) sequence is reported. Diversity to this methodology was achieved by a regioselective DoM rather than DreM reaction, affording more highly substituted phenanthrols ( Table 2 ). Application of the turbo-Grignard reagent (i-PrMgCl·LiCl) in the Ni-catalyzed Corriu-Kumada reaction gave efficient decarbamoylation ( Tables 3 and 4 ). Additional features are the TMS protecting group and halo-induced ipso-desilylation tactics applied to the regioselective synthesis of phenanthrenes ( Scheme 2 ).
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Affiliation(s)
- Kåre B Jørgensen
- Faculty of Science and Technology, University of Stavanger , N-4036 Stavanger, Norway
| | - Toni Rantanen
- Snieckus Innovations and Department of Chemistry, Queen's University , Kingston, ON, Canada K7L 3N6
| | - Thilo Dörfler
- Snieckus Innovations and Department of Chemistry, Queen's University , Kingston, ON, Canada K7L 3N6
| | - Victor Snieckus
- Snieckus Innovations and Department of Chemistry, Queen's University , Kingston, ON, Canada K7L 3N6
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9
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Li-Yuan Bao R, Zhao R, Shi L. Progress and developments in the turbo Grignard reagent i-PrMgCl·LiCl: a ten-year journey. Chem Commun (Camb) 2015; 51:6884-900. [DOI: 10.1039/c4cc10194d] [Citation(s) in RCA: 104] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The structural and kinetic perspectives of i-PrMgCl·LiCl help to rationalize the trends of its unique reactivity and selectivity.
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Affiliation(s)
- Robert Li-Yuan Bao
- Institute of Organic Chemistry
- The Academy of Fundamental and Interdisciplinary Science
- Harbin Institute of Technology
- Harbin 150080
- P. R. China
| | - Rong Zhao
- Institute of Organic Chemistry
- The Academy of Fundamental and Interdisciplinary Science
- Harbin Institute of Technology
- Harbin 150080
- P. R. China
| | - Lei Shi
- Institute of Organic Chemistry
- The Academy of Fundamental and Interdisciplinary Science
- Harbin Institute of Technology
- Harbin 150080
- P. R. China
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