51
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Bouarfa S, Graßl S, Ivanova M, Langlais T, Bentabed-Ababsa G, Lassagne F, Erb W, Roisnel T, Dorcet V, Knochel P, Mongin F. Copper- and Cobalt-Catalyzed Syntheses of Thiophene-Based Tertiary Amines. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900276] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Salima Bouarfa
- CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes; 35000 Rennes France
- Laboratoire de Synthèse Organique Appliquée; Faculté des Sciences Exactes et Appliquées; Université Oran1 Ahmed Ben Bella; BP 1524 El M′Naouer 31000 Oran Algeria
| | - Simon Graßl
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstrasse 5-13, Haus F 81377 München Germany
| | - Maria Ivanova
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstrasse 5-13, Haus F 81377 München Germany
| | - Timothy Langlais
- CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes; 35000 Rennes France
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstrasse 5-13, Haus F 81377 München Germany
| | - Ghenia Bentabed-Ababsa
- Laboratoire de Synthèse Organique Appliquée; Faculté des Sciences Exactes et Appliquées; Université Oran1 Ahmed Ben Bella; BP 1524 El M′Naouer 31000 Oran Algeria
| | - Frédéric Lassagne
- CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes; 35000 Rennes France
| | - William Erb
- CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes; 35000 Rennes France
| | - Thierry Roisnel
- CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes; 35000 Rennes France
| | - Vincent Dorcet
- CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes; 35000 Rennes France
| | - Paul Knochel
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstrasse 5-13, Haus F 81377 München Germany
| | - Florence Mongin
- CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes; 35000 Rennes France
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52
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Chen Z, Chen X, So CM. Palladium-Catalyzed C(sp2)–N Bond Cross-Coupling with Triaryl Phosphates. J Org Chem 2019; 84:6366-6376. [DOI: 10.1021/acs.joc.9b00703] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zicong Chen
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Xiangmeng Chen
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Chau Ming So
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
- The Hong Kong Polytechnic University, Shenzhen Research Institute, Shenzhen 518057, People’s Republic of China
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53
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Chan VS, Krabbe SW, Li C, Sun L, Liu Y, Nett AJ. Identification of an Oxalamide Ligand for Copper‐Catalyzed C−O Couplings from a Pharmaceutical Compound Library. ChemCatChem 2019. [DOI: 10.1002/cctc.201900393] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Vincent S. Chan
- Process Research and DevelopmentAbbVie Inc. 1 North Waukegan Road North Chicago IL 60064 USA
- Current address: Process SciencesSeattle Genetics 21823 30th Drive Southeast Bothell, Washington 98021 USA
| | - Scott W. Krabbe
- Process Research and DevelopmentAbbVie Inc. 1 North Waukegan Road North Chicago IL 60064 USA
- Current address: MilliporeSigma 5485 County Rd V Sheboygan Falls, Wisconsin 53081 USA
| | - Changfeng Li
- Tianjin Key Laboratory of Pharmaceutical Green Synthesis TechnologyAsymchem Laboratories (Tianjin) Co., Ltd. TEDA Tianjin 300457 P. R. China
| | - Lijie Sun
- Tianjin Key Laboratory of Pharmaceutical Green Synthesis TechnologyAsymchem Laboratories (Tianjin) Co., Ltd. TEDA Tianjin 300457 P. R. China
| | - Yue Liu
- Tianjin Key Laboratory of Pharmaceutical Green Synthesis TechnologyAsymchem Laboratories (Tianjin) Co., Ltd. TEDA Tianjin 300457 P. R. China
| | - Alex J. Nett
- Process Research and DevelopmentAbbVie Inc. 1 North Waukegan Road North Chicago IL 60064 USA
- Current address: The Dow Chemical Company Corporate R&D Midland MI 48674 USA
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54
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Cui J, Zhang T, Wang J, Liu D, Wang J, Liu J, Shen G. Synthesis of imidazobenzothiazine and primidobenazothiazine derivatives via the classic Ullmann cross-coupling reaction of 1,8-diiodonaphthalene with 1H-benzo[d]imidazole-2-thiols or 2-thiouracils. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1587774] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Jichun Cui
- School of Chemistry and Chemical Engineering, School of Pharmacy, Liaocheng University, Liaocheng, China
| | - Tongxin Zhang
- School of Chemistry and Chemical Engineering, School of Pharmacy, Liaocheng University, Liaocheng, China
| | - Jianhua Wang
- School of Chemistry and Chemical Engineering, School of Pharmacy, Liaocheng University, Liaocheng, China
| | - Dezhi Liu
- School of Chemistry and Chemical Engineering, School of Pharmacy, Liaocheng University, Liaocheng, China
| | - Jiaqian Wang
- School of Chemistry and Chemical Engineering, School of Pharmacy, Liaocheng University, Liaocheng, China
| | - Jie Liu
- School of Chemistry and Chemical Engineering, School of Pharmacy, Liaocheng University, Liaocheng, China
| | - Guodong Shen
- School of Chemistry and Chemical Engineering, School of Pharmacy, Liaocheng University, Liaocheng, China
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55
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Takagi M, Watanabe A, Murata S, Takita R. Copper-catalyzed arene amination in pure aqueous ammonia. Org Biomol Chem 2019; 17:1791-1795. [PMID: 30489597 DOI: 10.1039/c8ob02708k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A simple protocol for copper-catalyzed arene amination using aqueous ammonia without any additional ligands and organic coordinating solvents has been developed. The reaction pathway via a Cu(i)/Cu(iii) mechanism is proposed based on the results of control experiments as well as DFT calculations.
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Affiliation(s)
- Mio Takagi
- One-stop Sharing Facility Center for Future Drug Discoveries, Graduate School of Pharmaceutical Sciences, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, Japan.
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56
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Nongthombam GS, Borah K, Muinao T, Silla Y, Pal M, Deka Boruah HP, Boruah RC. Synthesis of D-Ring Annulated Pyridosteroids from β-Formyl Enamides and Their Biological Evaluations. ACS COMBINATORIAL SCIENCE 2019; 21:11-27. [PMID: 30576125 DOI: 10.1021/acscombsci.8b00140] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Herein, we report the synthesis of a novel class of substituted androst[17,16- b]pyridines (pyridosteroids) from the reaction of β-formyl enamides with alkynes in high yields. The optimized reaction protocol was extended to acyclic and cyclic β-formyl enamides to afford nonsteroidal pyridines. Cell survival assay of all compounds were carried against prostate cancer PC-3 cells wherein 3-hydroxy-5-en-2',3'-dicarbethoxy-androst[17,16- b]pyridine showed the highest cytotoxic activity. Phase contrast microscopy and flow cytometry studies exhibited marked morphological features characteristic of apoptosis in 3-hydroxy-5-en-2',3'-dicarbethoxy-androst[17,16- b]pyridine and abiraterone treated PC-3 cells. The treatment of 3-hydroxy-5-en-2',3'-dicarbethoxy-androst[17,16- b]pyridine induces G2/M phase cell cycle arrest in prostate cancer PC-3 cells. Enhancement of apoptotic inductions of PC-3 cells by 3-hydroxy-5-en-2',3'-dicarbethoxy-androst[17,16- b]pyridine and abiraterone through the activation of caspases-6, -7, and -8 pathways were supported by qRT-PCR. In silico study of the compound 3-hydroxy-5-en-2',3'-dicarbethoxy-androst[17,16- b]pyridine showed stable and promising interaction with the key caspase proteins. Our studies revealed that the pyridosteroid 3-hydroxy-5-en-2',3'-dicarbethoxy-androst[17,16- b]pyridine, bearing pyridine-2,3-dicarbethoxy pharmacophore, facilitated initiation of caspase-8 and activates downstream effectors caspase-6 and caspase-7 and thereby triggering apoptosis of PC-3 cancer cells.
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Affiliation(s)
- Geetmani Singh Nongthombam
- Chemical Science and Technology Division, CSIR-North East Institute of Science & Technology, Jorhat, Assam, India 785006
| | - Kasmika Borah
- Biological Science and Technology Division, CSIR-North East Institute of Science & Technology, Jorhat, Assam, India 785006
| | - Thingreila Muinao
- Biological Science and Technology Division, CSIR-North East Institute of Science & Technology, Jorhat, Assam, India 785006
| | - Yumnam Silla
- Biological Science and Technology Division, CSIR-North East Institute of Science & Technology, Jorhat, Assam, India 785006
| | - Mintu Pal
- Biological Science and Technology Division, CSIR-North East Institute of Science & Technology, Jorhat, Assam, India 785006
| | - Hari Prasanna Deka Boruah
- Biological Science and Technology Division, CSIR-North East Institute of Science & Technology, Jorhat, Assam, India 785006
| | - Romesh Chandra Boruah
- Chemical Science and Technology Division, CSIR-North East Institute of Science & Technology, Jorhat, Assam, India 785006
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57
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From Quinoxaline, Pyrido[2,3- b]pyrazine and Pyrido[3,4- b]pyrazine to Pyrazino-Fused Carbazoles and Carbolines. Molecules 2018; 23:molecules23112961. [PMID: 30428591 PMCID: PMC6278407 DOI: 10.3390/molecules23112961] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 11/09/2018] [Accepted: 11/11/2018] [Indexed: 11/17/2022] Open
Abstract
2,3-Diphenylated quinoxaline, pyrido[2,3-b]pyrazine and 8-bromopyrido[3,4-b]pyrazine were halogenated in deprotometalation-trapping reactions using mixed 2,2,6,6-tetramethyl piperidino-based lithium-zinc combinations in tetrahydrofuran. The 2,3-diphenylated 5-iodo- quinoxaline, 8-iodopyrido[2,3-b]pyrazine and 8-bromo-7-iodopyrido[3,4-b]pyrazine thus obtained were subjected to palladium-catalyzed couplings with arylboronic acids or anilines, and possible subsequent cyclizations to afford the corresponding pyrazino[2,3-a]carbazole, pyrazino[2',3':5,6] pyrido[4,3-b]indole and pyrazino[2',3':4,5]pyrido[2,3-d]indole, respectively. 8-Iodopyrido[2,3-b] pyrazine was subjected either to a copper-catalyzed C-N bond formation with azoles, or to direct substitution to introduce alkylamino, benzylamino, hydrazine and aryloxy groups at the 8 position. The 8-hydrazino product was converted into aryl hydrazones. Most of the compounds were evaluated for their biological properties (antiproliferative activity in A2058 melanoma cells and disease-relevant kinase inhibition).
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58
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59
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Chen J, Guo J, Lu Z. Recent Advances in Hydrometallation of Alkenes and Alkynes via the First Row Transition Metal Catalysis. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201800314] [Citation(s) in RCA: 227] [Impact Index Per Article: 37.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jianhui Chen
- College of Chemistry and Materials Engineering; Wenzhou University; Wenzhou, Zhejiang 325035 China
- Department of chemistry; Zhejiang University; Hangzhou Zhejiang 310027 China
| | - Jun Guo
- Department of chemistry; Zhejiang University; Hangzhou Zhejiang 310027 China
| | - Zhan Lu
- Department of chemistry; Zhejiang University; Hangzhou Zhejiang 310027 China
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60
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Ding R, Liu Y, Han M, Jiao W, Li J, Tian H, Sun B. Synthesis of Nitriles from Primary Amides or Aldoximes under Conditions of a Catalytic Swern Oxidation. J Org Chem 2018; 83:12939-12944. [DOI: 10.1021/acs.joc.8b02190] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Rui Ding
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing 100048, China
| | - Yongguo Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing 100048, China
| | - Mengru Han
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing 100048, China
| | - Wenyi Jiao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing 100048, China
| | - Jiaqi Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing 100048, China
| | - Hongyu Tian
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing 100048, China
| | - Baoguo Sun
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing 100048, China
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61
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Pfister N, Braun T, Wittwer P, Ahrens M. Selective Formation and Characterization of a RhIII
Difluorido λ4
-Trifluorosulfanyl Complex. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800323] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nils Pfister
- Department of Chemistry; Humboldt Universität zu Berlin; Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Thomas Braun
- Department of Chemistry; Humboldt Universität zu Berlin; Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Philipp Wittwer
- Department of Chemistry; Humboldt Universität zu Berlin; Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Mike Ahrens
- Department of Chemistry; Humboldt Universität zu Berlin; Brook-Taylor-Straße 2 12489 Berlin Germany
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62
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Le C, Chen TQ, Liang T, Zhang P, MacMillan DWC. A radical approach to the copper oxidative addition problem: Trifluoromethylation of bromoarenes. Science 2018; 360:1010-1014. [PMID: 29853683 DOI: 10.1126/science.aat4133] [Citation(s) in RCA: 277] [Impact Index Per Article: 46.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 04/12/2018] [Indexed: 01/19/2023]
Abstract
Transition metal-catalyzed arene functionalization has been widely used for molecular synthesis over the past century. In this arena, copper catalysis has long been considered a privileged platform due to the propensity of high-valent copper to undergo reductive elimination with a wide variety of coupling fragments. However, the sluggish nature of oxidative addition has limited copper's capacity to broadly facilitate haloarene coupling protocols. Here, we demonstrate that this copper oxidative addition problem can be overcome with an aryl radical-capture mechanism, wherein the aryl radical is generated through a silyl radical halogen abstraction. This strategy was applied to a general trifluoromethylation of aryl bromides through dual copper-photoredox catalysis. Mechanistic studies support the formation of an open-shell aryl species.
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Affiliation(s)
- Chip Le
- Merck Center for Catalysis at Princeton University, Princeton, NJ 08544, USA
| | - Tiffany Q Chen
- Merck Center for Catalysis at Princeton University, Princeton, NJ 08544, USA
| | - Tao Liang
- Merck Center for Catalysis at Princeton University, Princeton, NJ 08544, USA
| | - Patricia Zhang
- Merck Center for Catalysis at Princeton University, Princeton, NJ 08544, USA
| | - David W C MacMillan
- Merck Center for Catalysis at Princeton University, Princeton, NJ 08544, USA.
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63
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Hosseinian A, Zare Fekri L, Monfared A, Vessally E, Nikpassand M. Transition-metal-catalyzed C–N cross-coupling reactions of N-unsubstituted sulfoximines: a review. J Sulphur Chem 2018. [DOI: 10.1080/17415993.2018.1471142] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Akram Hosseinian
- Department of Engineering Science, College of Engineering, University of Tehran, Tehran, Iran
| | | | - Aazam Monfared
- Department of Chemistry, Payame Noor University, Tehran, Iran
| | - Esmail Vessally
- Department of Chemistry, Payame Noor University, Tehran, Iran
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64
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Tomar P, Braun T, Kemnitz E. Photochemical activation of SF6 by N-heterocyclic carbenes to provide a deoxyfluorinating reagent. Chem Commun (Camb) 2018; 54:9753-9756. [DOI: 10.1039/c8cc05494k] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A photochemical activation of SF6 provides access to difluoroimidazolidine derivatives, which can serve as intermediates to shuttle fluorides to alcohols by deoxyfluorination.
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Affiliation(s)
- Pooja Tomar
- Department of Chemistry
- Humboldt-Universität zu Berlin
- 12489 Berlin
- Germany
| | - Thomas Braun
- Department of Chemistry
- Humboldt-Universität zu Berlin
- 12489 Berlin
- Germany
| | - Erhard Kemnitz
- Department of Chemistry
- Humboldt-Universität zu Berlin
- 12489 Berlin
- Germany
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