1
|
Li X, Lu H, Ji M, Sun K, Pu F, Ding Y, Hu A. Synthesis and biological properties of maleimide-based macrocyclic lactone enediynes. Org Biomol Chem 2022; 20:5481-5488. [PMID: 35775821 DOI: 10.1039/d2ob00571a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Natural enediyne antibiotics are powerful DNA-cleavage agents due to the presence of the highly reactive hex-3-ene-1,5-diyne units. However, the complicated chemical structure and thermal instability make their synthesis, derivatization, and storage challenging. Heterocycle-fused enediynes, which exhibit strong antineoplastic activity, are promising analogues of natural enediynes for medicinal applications. To this end, a series of maleimide-based enediynes with macrocyclic lactone moieties were synthesized through the Sonagashira coupling reaction. Differential scanning calorimetry and electron paramagnetic resonance results showed that these macrocyclic enediynes exhibited a rather low onset temperature and the ability to generate radicals at physiological temperature. In addition, the structure-activity relationship of enediynes was analyzed by changing the ring size and the substituents on the propargyl group. Cellular experiments indicated that the diradicals produced by these enediynes efficiently cleaved DNA and disrupted the cell cycle distribution, and consequently induced tumor cell death via an apoptosis pathway at low half inhibitory concentrations. Computational studies suggested that the maleimide moiety promoted the propargyl-allenyl rearrangement of the cyclic enediyne, enabling the generation of diradical species through the Myers-Saito cyclization, and then abstracted hydrogen atoms from the H-donors.
Collapse
Affiliation(s)
- Xiaoxuan Li
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Haotian Lu
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Mingming Ji
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Ke Sun
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Fangxu Pu
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Yun Ding
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Aiguo Hu
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
| |
Collapse
|
2
|
Lettreuch H, Khodja M, Boutoumi H. New Synthetic Route to Cinnoline Derivatives and Their Microbiological Activity. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1070428020120222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
3
|
Liu J, Jiang J, Zheng L, Liu Z. Recent Advances in the Synthesis of Nitrogen Heterocycles Using Arenediazonium Salts as Nitrogen Sources. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000700] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jidan Liu
- School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Guangzhou Key Laboratory for Clean Energy and Materials Guangzhou University Guangzhou 510006 People's Republic of China
| | - Jinyuan Jiang
- School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Guangzhou Key Laboratory for Clean Energy and Materials Guangzhou University Guangzhou 510006 People's Republic of China
| | - Liyao Zheng
- School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Guangzhou Key Laboratory for Clean Energy and Materials Guangzhou University Guangzhou 510006 People's Republic of China
| | - Zhao‐Qing Liu
- School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Guangzhou Key Laboratory for Clean Energy and Materials Guangzhou University Guangzhou 510006 People's Republic of China
| |
Collapse
|
4
|
Danilkina NA, D'yachenko AS, Govdi AI, Khlebnikov AF, Kornyakov IV, Bräse S, Balova IA. Intramolecular Nicholas Reactions in the Synthesis of Heteroenediynes Fused to Indole, Triazole, and Isocoumarin. J Org Chem 2020; 85:9001-9014. [PMID: 32506914 DOI: 10.1021/acs.joc.0c00930] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The applicability of an intramolecular Nicholas reaction for the preparation of 10-membered O- and N-enediynes fused to indole, 1,2,3-triazole, and isocoumarin was investigated. The general approach to acyclic enediyne precursors fused to heterocycles includes inter- and intramolecular buta-1,3-diyne cyclizations with the formation of iodoethynylheterocycles, followed by Sonogashira coupling. The nature of both a heterocycle and a nucleophilic group affects the possibility of a 10-membered ring closure by the Nicholas reaction. Among oxacycles, an isocoumarin-fused enediyne was obtained. In the case of O-enediyne annulated with indole, instead of the formation of a 10-membered cycle, BF3-promoted addition of an OH-group to the proximal triple bond at the C3 position afforded dihydrofuryl-substituted indole. For 1,2,3-triazole-fused analogues, using NH-Ts as a nucleophilic functional group allowed obtaining 10-membered azaenediyne, while the substrate with a hydroxyl group gave only traces of the desired 10-membered oxacycle. An improved method for the deprotection of Co-complexes of cyclic enediynes using tetrabutylammonium fluoride in an acetone/water mixture and the investigation of the 10-membered enediynes' reactivity in the Bergman cyclization are also reported. In the solid state, all synthesized iodoethynylheterocycles were found to be involved in halogen bond (XB) formation with either O or N atoms as XB acceptors.
Collapse
Affiliation(s)
- Natalia A Danilkina
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Alexander S D'yachenko
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Anastasia I Govdi
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Alexander F Khlebnikov
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Ilya V Kornyakov
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Stefan Bräse
- Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany.,Institute of Biological and Chemical Systems-Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Irina A Balova
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| |
Collapse
|
5
|
Li Y, Qiu S, Fan L, Yin G. Cooperative Palladium and Copper Catalysis: One‐pot Synthesis of Diamino‐Substituted Naphthalenes from Aryl Halides, 1,4‐Bis(trimethylsilyl)butadiyne and Amines. ChemCatChem 2020. [DOI: 10.1002/cctc.201901745] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yuan Li
- College of Chemistry and Chemical Engineering Hubei Key Laboratory of Pollutant Analysis and Reuse TechnologyHubei Normal University Huangshi 435002 P. R. China
| | - Shaozhong Qiu
- College of Chemistry and Chemical Engineering Hubei Key Laboratory of Pollutant Analysis and Reuse TechnologyHubei Normal University Huangshi 435002 P. R. China
| | - Ling Fan
- College of Chemistry and Chemical Engineering Hubei Key Laboratory of Pollutant Analysis and Reuse TechnologyHubei Normal University Huangshi 435002 P. R. China
| | - Guodong Yin
- College of Chemistry and Chemical Engineering Hubei Key Laboratory of Pollutant Analysis and Reuse TechnologyHubei Normal University Huangshi 435002 P. R. China
| |
Collapse
|
6
|
Sadek KU, Mekheimer RA, Abd-Elmonem M. Recent Developments in the Synthesis of Cinnoline Derivatives. MINI-REV ORG CHEM 2019. [DOI: 10.2174/1570193x15666180712124148] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Crinnolines can serve as unique and versatile class of heterocycles especially in fields related
to synthetic and pharmaceutical chemistry owing to their potent biological activities. They possess diversity
of pharmaceutical activities as anticancer, antibacterial, anti-inflammatory, anti-allergic as well
as anti-hypertensive activities. Since the first synthesis of cinnoline by Richter (1883) numerous protocols
for their synthesis have been developed utilizing arenediazonium salts, aryl hydrazines and arylhydhydrazones
precursors. Recently metal catalyzed C-C and C-N bond formation reactions have
emerged as efficient tools for synthesis of cinnoline derivatives. This review aims to focus on the recent
synthetic routes used for the synthesis of cinnoline derivatives. An effort has been carried out to provide
an overview of practical methods for preparing cinnolines. Furthermore the reaction mechanisms have
been described in brief.
Collapse
Affiliation(s)
- Kamal Usef Sadek
- Chemistry Department, Faculty of Science, Minia University, Minia 61519, Egypt
| | | | - Mohamed Abd-Elmonem
- Chemistry Department, Faculty of Science, Minia University, Minia 61519, Egypt
| |
Collapse
|
7
|
Cr(II)-promoted internal cyclization of acyclic enediynes fused to benzo[b]thiophene core: Macrocycles versus 2-methylenecycloalkan-1-ols formation. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2018.05.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
8
|
Felpin FX, Sengupta S. Biaryl synthesis with arenediazonium salts: cross-coupling, CH-arylation and annulation reactions. Chem Soc Rev 2019; 48:1150-1193. [PMID: 30608075 DOI: 10.1039/c8cs00453f] [Citation(s) in RCA: 120] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The rich legacy of arenediazonium salts in the synthesis of unsymmetrical biaryls, built around the seminal works of Pschorr, Gomberg and Bachmann more than a century ago, continues to make important contributions at various evolutionary stages of modern biaryl synthesis. Based on in-depth mechanistic analysis and design of novel pathways and reaction conditions, the scope of biaryl synthesis with arenediazonium salts has enormously expanded in recent years through applications of transition metal/photoredox-catalysed cross-coupling, thermal/photosensitized radical chain CH-arylation of (hetero)arenes and arylative radical annulation reactions with alkynes. These recent developments have provided facile synthetic access to a wide variety of unsymmetrical biaryls of pharmaceutical, agrochemical and optoelectronic importance with green scale-up options and created opportunities for late-stage modification of peptides, nucleosides, carbon nanotubes and electrodes, the details of which are captured in this review.
Collapse
Affiliation(s)
- François-Xavier Felpin
- Université de Nantes, UFR des Sciences et des Techniques, CNRS UMR 6230, CEISAM, 2 rue de la Houssinière, 44322 Nantes Cedex 3, France. and Institut Universitaire de France, 1 rue Descartes, 75231 Paris Cedex 05, France
| | | |
Collapse
|
9
|
Lyapunova AG, Danilkina NA, Rumyantsev AM, Khlebnikov AF, Chislov MV, Starova GL, Sambuk EV, Govdi AI, Bräse S, Balova IA. Relative Reactivity of Benzothiophene-Fused Enediynes in the Bergman Cyclization. J Org Chem 2018; 83:2788-2801. [DOI: 10.1021/acs.joc.7b03258] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Anna G. Lyapunova
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
| | - Natalia A. Danilkina
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
| | - Andrey M. Rumyantsev
- Department
of Genetics and Biotechnology, Saint Petersburg State University (SPbSU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - A. F. Khlebnikov
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
| | - Mikhail V. Chislov
- Research
Centre for Thermogravimetric and Calorimetric Research, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Galina L. Starova
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
| | - Elena V. Sambuk
- Department
of Genetics and Biotechnology, Saint Petersburg State University (SPbSU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Anastasia I. Govdi
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
| | - Stefan Bräse
- Institute
of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
- Institute
of Toxicology and Genetics (ITG), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Irina A. Balova
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
| |
Collapse
|
10
|
Valenzuela SA, Cortés AJ, Tippins ZJE, Daly MH, Keel TE, Gherman BF, Spence JD. Effect of Extended Benzannelation Orientation on Bergman and Related Cyclizations of Isomeric Quinoxalenediynes. J Org Chem 2017; 82:13297-13312. [PMID: 29121468 DOI: 10.1021/acs.joc.7b02420] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A combined computational and experimental study was conducted to examine the effect of extended benzannelation orientation on C1-C5 and C1-C6 cyclization of acyclic quinoxalenediynes. Calculations (mPW1PW91/cc-pVTZ//mPW1PW91/6-31G(d,p)) on terminal and phenylethynyl-substituted 5,6-diethynylquinoxaline and 6,7-diethynylquinoxaline showed C1-C6 Bergman cyclization as the favored thermodynamic reaction pathway, with larger C1-C6 preference for the angular quinoxalenediynes due to gain of a new aromatic sextet. Kinetic studies, as a function of 1,4-cyclohexadiene concentration, revealed retro-Bergman ring opening predominates over hydrogen atom abstraction (k-1 > k2) for 6,7-diethynylquinoxaline while 5,6-diethynylquinoxaline undergoes irreversible Bergman cyclization indicative of a large retro-Bergman ring opening barrier (k2 > k-1). The effect of extended linear versus angular benzannelation on reaction pathway shows in the contrasting photocyclizations of phenylethynyl derivatives. While angular 5,6-diethynylquinoxalines gave exclusive C1-C6 photocyclization, linear 6,7-diethynylquinoxaline afforded C1-C5 fulvene products. Computed singlet-triplet gaps and biradical stabilization energies indicated weak interaction between the nitrogen lone pair and proximal radical center in angular 5,6-diethynylquinoxalines. The overall data indicates extended angular benzannelation effectively renders Bergman cyclization irreversible due to favorable aromatic stabilization energy, while extended linear benzannelation results in increased retro-Bergman ring opening, allowing C1-C5 cyclization to become a competitive reaction channel.
Collapse
Affiliation(s)
- Stephanie A Valenzuela
- Department of Chemistry, California State University, Sacramento , 6000 J Street, Sacramento, California 95819, United States
| | - Alondra J Cortés
- Department of Chemistry, California State University, Sacramento , 6000 J Street, Sacramento, California 95819, United States
| | - Zakery J E Tippins
- Department of Chemistry, California State University, Sacramento , 6000 J Street, Sacramento, California 95819, United States
| | - Morgan H Daly
- Department of Chemistry, California State University, Sacramento , 6000 J Street, Sacramento, California 95819, United States
| | - Terell E Keel
- Department of Chemistry, California State University, Sacramento , 6000 J Street, Sacramento, California 95819, United States
| | - Benjamin F Gherman
- Department of Chemistry, California State University, Sacramento , 6000 J Street, Sacramento, California 95819, United States
| | - John D Spence
- Department of Chemistry, California State University, Sacramento , 6000 J Street, Sacramento, California 95819, United States
| |
Collapse
|
11
|
|
12
|
Raviola C, Protti S, Ravelli D, Fagnoni M. (Hetero)aromatics from dienynes, enediynes and enyne–allenes. Chem Soc Rev 2016; 45:4364-90. [DOI: 10.1039/c6cs00128a] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Recent advances in the synthesis of (hetero)aromatics starting from polyenes, such as dienynes, enediynes and enyne–allenes, are discussed.
Collapse
|
13
|
Danilkina NA, Gurskaya LY, Vasilyev AV, Balova IA. Towards Isocoumarin-Fused Enediyne Systems through the Electrophilic Cyclization of Methylo-(Buta-1,3-diynyl)benzoates. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501262] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
14
|
Danilkina NA, Lyapunova AG, Khlebnikov AF, Starova GL, Bräse S, Balova IA. Ring-Closing Metathesis of Co2(CO)6–Alkyne Complexes for the Synthesis of 11-Membered Dienediynes: Overcoming Thermodynamic Barriers. J Org Chem 2015; 80:5546-55. [DOI: 10.1021/acs.joc.5b00409] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Natalia A. Danilkina
- Institute
of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, Russia
| | - Anna G. Lyapunova
- Institute
of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, Russia
| | - Alexander F. Khlebnikov
- Institute
of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, Russia
| | - Galina L. Starova
- Institute
of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, Russia
| | - Stefan Bräse
- Institute
of Organic Chemistry, Karlsruhe Institute of Technology, Campus
South, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
- Institute
of Toxicology and Genetics, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Irina A. Balova
- Institute
of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, Russia
| |
Collapse
|
15
|
Danilkina NA, Vlasov PS, Vodianik SM, Kruchinin AA, Vlasov YG, Balova IA. Synthesis and chemosensing properties of cinnoline-containing poly(arylene ethynylene)s. Beilstein J Org Chem 2015; 11:373-84. [PMID: 25977711 PMCID: PMC4419556 DOI: 10.3762/bjoc.11.43] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Accepted: 03/02/2015] [Indexed: 01/14/2023] Open
Abstract
Novel poly(arylene ethynylene)s comprising a cinnoline core were prepared in high yields via a three-step methodology. A Richter-type cyclization of 2-ethynyl- and 2-(buta-1,3-diynyl)aryltriazenes was used for cinnoline ring formation, followed by a Sonogashira coupling for the introduction of trimethylsilylethynyl moieties and a sila-Sonogashira coupling as the polycondensation technique. The fluorescence of the cinnoline-containing polymers in THF was highly sensitive to quenching by Pd(2+) ions.
Collapse
Affiliation(s)
- Natalia A Danilkina
- Institute of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, Saint Petersburg, 198504, Russia
| | - Petr S Vlasov
- Institute of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, Saint Petersburg, 198504, Russia
| | - Semen M Vodianik
- Institute of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, Saint Petersburg, 198504, Russia
| | - Andrey A Kruchinin
- Institute of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, Saint Petersburg, 198504, Russia
| | - Yuri G Vlasov
- Institute of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, Saint Petersburg, 198504, Russia
| | - Irina A Balova
- Institute of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, Saint Petersburg, 198504, Russia
| |
Collapse
|
16
|
Danilkina NA, Kulyashova AE, Khlebnikov AF, Bräse S, Balova IA. Electrophilic Cyclization of Aryldiacetylenes in the Synthesis of Functionalized Enediynes Fused to a Heterocyclic Core. J Org Chem 2014; 79:9018-45. [DOI: 10.1021/jo501396s] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- N. A. Danilkina
- Institute
of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, Russia
| | - A. E. Kulyashova
- Institute
of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, Russia
| | - A. F. Khlebnikov
- Institute
of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, Russia
| | - S. Bräse
- Institute
of Organic Chemistry, Karlsruhe Institute of Technology, Campus South, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - I. A. Balova
- Institute
of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, Russia
| |
Collapse
|
17
|
Sharp PP, Banwell MG, Renner J, Lohmann K, Willis AC. Consecutive Gold(I)-Catalyzed Cyclization Reactions of o-(Buta-1,3-diyn-1-yl-)-Substituted N-Aryl Ureas: A One-Pot Synthesis of Pyrimido[1,6-a]indol-1(2H)-ones and Related Systems. Org Lett 2013; 15:2616-9. [DOI: 10.1021/ol4007986] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Phillip P. Sharp
- Research School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra ACT 0200, Australia, and Global Research Agricultural Products, BASF SE, GVA/FO − A030, 67056 Ludwigshafen, Germany
| | - Martin G. Banwell
- Research School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra ACT 0200, Australia, and Global Research Agricultural Products, BASF SE, GVA/FO − A030, 67056 Ludwigshafen, Germany
| | - Jens Renner
- Research School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra ACT 0200, Australia, and Global Research Agricultural Products, BASF SE, GVA/FO − A030, 67056 Ludwigshafen, Germany
| | - Klaas Lohmann
- Research School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra ACT 0200, Australia, and Global Research Agricultural Products, BASF SE, GVA/FO − A030, 67056 Ludwigshafen, Germany
| | - Anthony C. Willis
- Research School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra ACT 0200, Australia, and Global Research Agricultural Products, BASF SE, GVA/FO − A030, 67056 Ludwigshafen, Germany
| |
Collapse
|
18
|
An acetylene zipper—Sonogashira reaction sequence for the efficient synthesis of conjugated arylalkadiynols. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.02.066] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
19
|
Samanta D, Cinar ME, Das K, Schmittel M. Nonstatistical Dynamic Effects in the Thermal C2–C6 Diels–Alder Cyclization of Enyne–Allenes. J Org Chem 2013; 78:1451-62. [DOI: 10.1021/jo302524a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Debabrata Samanta
- Department
of Chemistry and Biology, Universität Siegen, Adolf-Reichwein-Strasse, D-57068 Siegen, Germany
| | - Mehmet Emin Cinar
- Department
of Chemistry and Biology, Universität Siegen, Adolf-Reichwein-Strasse, D-57068 Siegen, Germany
| | - Kalpataru Das
- Department
of Chemistry and Biology, Universität Siegen, Adolf-Reichwein-Strasse, D-57068 Siegen, Germany
| | - Michael Schmittel
- Department
of Chemistry and Biology, Universität Siegen, Adolf-Reichwein-Strasse, D-57068 Siegen, Germany
| |
Collapse
|
20
|
Spence JD, Rios AC, Frost MA, McCutcheon CM, Cox CD, Chavez S, Fernandez R, Gherman BF. Syntheses, thermal reactivities, and computational studies of aryl-fused quinoxalenediynes: effect of extended benzannelation on Bergman cyclization energetics. J Org Chem 2012; 77:10329-39. [PMID: 23067009 DOI: 10.1021/jo302009c] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A series of [b]-fused 6,7-diethynylquinoxaline derivatives have been synthesized through an imine condensation strategy to examine the effect of extended benzannelation on the thermal reactivity of enediynes. Absorption and emission spectra of the highly conjugated quinoxalenediynes were red-shifted approximately 100-200 nm relative to those of 1,2-diethynylbenzene. Strong exotherms indicative of enediyne cyclization were observed by differential scanning calorimetry, while solution cyclizations in the presence of 1,4-cyclohexadiene confirmed C(1)-C(6) Bergman cyclization. To provide further insight into Bergman cyclization energetics, computational studies were performed to compare changes in the cyclization enthalpy barrier, reaction enthalpy, and barrier of retro-Bergman ring-opening. Extension of benzannelation from 1,2-diethynylbenzene to either 2,3-diethynylnaphthalene or the 6,7-diethynylquinoxalines had a minimal effect on the cyclization barrier. In comparison, the enthalpies of cyclization were increased upon linearly extended benzannelation, which resulted in reduced barriers to retro-Bergman ring-opening. In addition, the orientation of extended benzannelation was found to have a significant effect on the cyclization endothermicity. In particular, 5,6-diethynylquinoxaline exhibited a 6.9 kcal/mol decrease in cyclization enthalpy compared to 6,7-diethynylquinoxaline due to increased aromatic stabilization energy in the respective angularly versus linearly fused azaacene cyclized products.
Collapse
Affiliation(s)
- John D Spence
- Department of Chemistry, California State University, Sacramento, Sacramento, California 95819, USA.
| | | | | | | | | | | | | | | |
Collapse
|
21
|
Danilkina N, Nieger M, Selivanov S, Bräse S, Balova I. Electrophilic Cyclization and Ring-Closing Metathesis as Key Steps in the Synthesis of a 12-Membered Cyclic Enediyne. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200881] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
22
|
Takaishi K, Kawamoto M, Muranaka A, Uchiyama M. Fusion of Photochromic Reaction and Synthetic Reaction: Photoassisted Cyclization to Highly Strained Chiral Azobenzenophanes. Org Lett 2012; 14:3252-5. [DOI: 10.1021/ol300992d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Kazuto Takaishi
- RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan, Department of Materials and Life Science, Seikei University, 3-3-1 Kichijoji-kitamachi, Musashino, Tokyo 180-8633, Japan, Japan Science and Technology Agency (JST), PRESTO, Kawaguchi 332-0012, Japan, and Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masuki Kawamoto
- RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan, Department of Materials and Life Science, Seikei University, 3-3-1 Kichijoji-kitamachi, Musashino, Tokyo 180-8633, Japan, Japan Science and Technology Agency (JST), PRESTO, Kawaguchi 332-0012, Japan, and Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Atsuya Muranaka
- RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan, Department of Materials and Life Science, Seikei University, 3-3-1 Kichijoji-kitamachi, Musashino, Tokyo 180-8633, Japan, Japan Science and Technology Agency (JST), PRESTO, Kawaguchi 332-0012, Japan, and Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masanobu Uchiyama
- RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan, Department of Materials and Life Science, Seikei University, 3-3-1 Kichijoji-kitamachi, Musashino, Tokyo 180-8633, Japan, Japan Science and Technology Agency (JST), PRESTO, Kawaguchi 332-0012, Japan, and Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| |
Collapse
|
23
|
|