1
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Farghaly TA, Alosaimy AM, Al-Qurashi NT, Masaret GS, Abdulwahab HG. The most Recent Compilation of Reactions of Enaminone Derivatives with various Amine Derivatives to Generate Biologically Active Compounds. Mini Rev Med Chem 2024; 24:793-843. [PMID: 37711104 DOI: 10.2174/1389557523666230913164038] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 07/23/2023] [Accepted: 07/24/2023] [Indexed: 09/16/2023]
Abstract
Heterocyclic derivatives serve as the fundamental components of both natural and synthetic drugs. Enaminones play a crucial role as foundational units in the synthesis of numerous bioactive heterocyclic compounds, including pyrazoles, pyridines, oxazoles, isoxazoles, as well as fused heterocyclic structures like indoles, carbazoles, quinolines, acridines, and phenanthridines. These diverse heterocyclic rings are well-known for their various therapeutic activities, encompassing anticancer, anti-inflammatory, antimicrobial, antidepressant, and antiviral properties. By reacting with nitrogenbased nucleophiles, enaminones can generate bioactive azoles, azines, and their fused systems. This study focuses on the recent advancements in enaminone reactions with (a) nitrogen-based nucleophiles, such as aliphatic amines, derivatives of aniline, heterocyclic amines, hydroxylamine, hydrazine derivatives, guanidine derivatives, urea, and thiourea derivatives, and (b) nitrogen-based electrophiles, such as diazonium salts. These reactions have led to the synthesis of a wide range of bioactive fused heterocyclic compounds from 2010 to the end of 2022.
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Affiliation(s)
- Thoraya A Farghaly
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah Almukaramah, Saudi Arabia
| | - Amal M Alosaimy
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah Almukaramah, Saudi Arabia
| | - Nadia T Al-Qurashi
- Department of Basic Science, University College in Adam, Umm Al-Qura University, Makkah Almukkarramah, Saudi Arabia
| | - Ghada S Masaret
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah Almukaramah, Saudi Arabia
| | - Hanan Gaber Abdulwahab
- Department of Pharmaceutical Medicinal Chemistry and Drug Design, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, Egypt
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2
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Hammouda MM, Elattar KM, Rashed MM, Osman AMA. Synthesis, biological activities, and future perspectives of steroidal monocyclic pyridines. RSC Med Chem 2023; 14:1934-1972. [PMID: 37859725 PMCID: PMC10583814 DOI: 10.1039/d3md00411b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 09/04/2023] [Indexed: 10/21/2023] Open
Abstract
Steroidal pyridines are a class of compounds that have been the subject of extensive research in recent years due to their potential biological activities. The introduction of a pyridine ring into the steroid skeleton can significantly alter the chemical and biological properties of the compound, making it more potent and/or selective for a particular target. Different synthetic methods have been developed for the preparation of steroidal pyridines. This review provides an overview of the synthesis, biological activities, and future perspectives of steroidal monocyclic dihydropyridines, tetrahydropyridines, and pyridines from 2005 to the present. The different synthetic methods that have been developed for the preparation of these steroids are discussed, as well as the proposed mechanisms and the biological activities that have been reported. Finally, the potential of steroidal monocyclic pyridines for the development of new drugs is discussed. This review is intended to provide a comprehensive overview of the field of steroidal monocyclic pyridines for researchers and scientists who are interested in this area of research. It is also hoped that this review will stimulate further research into the synthesis and biological activities of steroidal pyridines to develop new and improved drugs for the treatment of diseases.
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Affiliation(s)
- Mohamed M Hammouda
- Department of Chemistry, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University Al-Kharj 11942 Saudi Arabia
- Chemistry Department, Faculty of Science, Mansoura University El-Gomhoria Street Mansoura 35516 Egypt
| | - Khaled M Elattar
- Unit of Genetic Engineering and Biotechnology, Faculty of Science, Mansoura University El-Gomhoria Street Mansoura 35516 Egypt +201010655354
| | - Marwa M Rashed
- Toxicology Department, Mansoura Hospital, Faculty of Medicine, Mansoura University El-Gomhoria Street Mansoura 35516 Egypt
| | - Amany M A Osman
- Department of Chemistry, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University Al-Kharj 11942 Saudi Arabia
- Chemistry Department, Faculty of Science, Menoufia University Shebin El-Koam Egypt
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3
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Luo C, Cai M, Zhao R, Huang B. An efficient and practical synthesis of functionalized pyridines via recyclable copper-catalyzed three-component tandem cyclization. SYNTHETIC COMMUN 2023. [DOI: 10.1080/00397911.2022.2156296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Chengkai Luo
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China
| | - Mingzhong Cai
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China
| | - Ruonan Zhao
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China
| | - Bin Huang
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China
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4
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Liu N, Cuan X, Li H, Duan X. Progress in the Study of α-Functionalization of Enaminone. CHINESE J ORG CHEM 2023. [DOI: 10.6023/cjoc202207027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
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5
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Candra H, Ma GL, En SLQ, Liang ZX. Enaminone Formation Drives the Coupling of Biosynthetic Pathways to Generate Cyclic Lipopeptides. Chembiochem 2022; 23:e202200457. [PMID: 36161451 DOI: 10.1002/cbic.202200457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/17/2022] [Indexed: 02/03/2023]
Abstract
A family of novel cyclic lipopeptides named tasikamides A-H (Tsk A-H) were discovered recently in Streptomyces tasikensis P46. Aside from the unique cyclic pentapeptide scaffold shared by the tasikamides, Tsk A-C contain a hydrazone bridge that connects the cyclic pentapeptide to the lipophilic alkyl 5-hydroxylanthranilate (AHA) moiety. Here we report the production of tasikamides I-K (Tsk I-K) by a mutant strain of S. tasikensis P46 that overexpresses two pathway-specific transcription regulators. Unlike Tsk A-C, Tsk I-K feature a rare enaminone-bridge that links the cyclic peptide scaffold to the AHA moiety. Our experimental data suggest that Tsk I-K are generated by the coupling of two biosynthetic pathways via a nonenzymatic condensation reaction between an arylamine and a β-keto aldehyde-containing precursor. The results underscore the nucleophilic and electrophilic reactivity of the β-keto aldehyde moiety and its ability to promote fragment coupling reactions in live microbial cells.
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Affiliation(s)
- Hartono Candra
- School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
| | - Guang-Lei Ma
- School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
| | - Sean Lee Qiu En
- School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
| | - Zhao-Xun Liang
- School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
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6
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Chen K, Zhao B, Liu Y, Wan JP. Thiazole-5-carbaldehyde Synthesis by Cascade Annulation of Enaminones and KSCN with Dess-Martin Periodinane Reagent. J Org Chem 2022; 87:14957-14964. [PMID: 36260927 DOI: 10.1021/acs.joc.2c01881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The Dess-Martin periodinane (DMP) reagent-mediated reactions of tertiary enaminones with potassium thiocyanate for the synthesis of thiazole-5-carbaldehydes are developed. The product formation involves cascade hydroxyl thiocyanation of the C═C double bond, intramolecular hydroamination of the C≡N bond, and thiazole annulation by condensation on the ketone carbonyl site, representing novel reaction pathways in the reactions between enaminones and thiocyanate salt. DMP plays dual roles in mediating the free radical thiocyanation and inducing the unconventional selective thiazole-5-carbaldehyde formation by masking the in situ generated formyl group during the reaction process.
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Affiliation(s)
- Kang Chen
- National Research Center for Carbohydrate Synthesis, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, PR China
| | - Baoli Zhao
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing, Zhejiang 312000, PR China
| | - Yunyun Liu
- National Research Center for Carbohydrate Synthesis, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, PR China.,Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing, Zhejiang 312000, PR China
| | - Jie-Ping Wan
- National Research Center for Carbohydrate Synthesis, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, PR China
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7
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Polymeric REE coordination compounds based on novel enaminone derivative. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.116122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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8
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Li Y, Yang K, Cao L. Copper-catalyzed [3+3] annulation of ketones with oxime acetates for the synthesis of pyridines. RSC Adv 2022; 12:27546-27549. [PMID: 36276018 PMCID: PMC9516370 DOI: 10.1039/d2ra05050a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 09/19/2022] [Indexed: 09/19/2023] Open
Abstract
A novel and efficient copper-catalyzed strategy for the synthesis of diverse pyridines through the [3+3] annulation of ketones with oxime acetates has been reported. It is very convenient to obtain various unsymmetrical 2,6-diarylpyridines by changing different substrates. The rare copper-catalyzed direct difunctionalization of saturated ketones for the synthesis of nitrogen heterocycles is developed. This protocol has excellent functional group tolerance, readily available raw materials, high chemoselectivity and broad substrate scope.
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Affiliation(s)
- Yilin Li
- Guangzhou Darui Bio-technology Co. Ltd China
| | - Kai Yang
- College of Pharmacy, Gannan Medical University Ganzhou 341000 P. R. China
| | - Liang Cao
- Department of Chemistry, Southern University of Science and Technology Shenzhen 518055 Guangdong China
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9
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Hassan MM, Alhalafi MH. Synthesis, Structural Determination, and Antioxidant Activities of Acyclic and Substituted Heterocyclic Phosphonates Linearly Linked 4-hydroxy-2(1H)-quinolinone. Molecules 2022; 27:molecules27185960. [PMID: 36144697 PMCID: PMC9506251 DOI: 10.3390/molecules27185960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/06/2022] [Accepted: 09/07/2022] [Indexed: 12/05/2022] Open
Abstract
The chemical reactivity of 3-[(E)-3-(dimethylamino)-2-propenoyl]-4-hydroxy-1-methy-2(1H)-quinolinone (1) towards some phosphorus reagents was studied. The enaminone 1 was cyclized into pyranoquinolinylphosphonate 2 via treatment with diethyl phosphite in basic medium. However, its reaction with triethoxy phosphonoacetate gave the substituted oxopyranylphosphonate 3. Using the same reaction conditions, both thioxopyridinylphosphonate 4 and oxopyranylphosphonate 5 were produced via a reaction of enaminone 1 with both diethyl 2-amino-2-thioxoethylphosphonate and diethyl vinylphosphonate, respectively, in low yields. In addition, the two novel oxopyridinylphosphonates 6 and 7 were obtained by treatment of enaminone 1 with a diethyl cyanomethylphosphonate reagent. Two oaxathiaphosphininyl derivatives, 8 and 9, were obtained by treatment of the enaminone 1 with O, O-diethyl dithiophosphoric acid under different reaction conditions. Diazaphosphininyl 11 and oxazaphosphininyl 12 derivatives were obtained in excellent yields using a P-phenylphosphonic diamide reagent under different reaction conditions. The treatment of the enaminone 1 with phosphorus pentasulfide produced the non-phosphorylated product thioxothiopyranoquinolinone 13. Finally, the enaminone was turned into oxathiaphosphininyl 14 using Lawesson’s reagent. The possible reaction mechanisms of the formation of these products were discussed. The structures of newly isolated products were established by elemental analysis and spectral tools. The compounds were evaluated for their antioxidant activities.
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Affiliation(s)
- Mohamed M. Hassan
- Chemistry Department, Faculty of Education, Ain Shams University, Roxy, Cairo 11711, Egypt
- Correspondence:
| | - Mona H. Alhalafi
- Department of Chemistry, College of Science Al-Zulfi, Majmaah University, P.O. Box 66, Al-Majmaah 11952, Saudi Arabia;
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10
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2D polymeric lanthanide(III) compounds based on novel bright green emitting enaminone ligand. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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11
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Reza AI, Iwai K, Nishiwaki N. Recent Advances in Synthesis of Multiply Arylated/Alkylated Pyridines. CHEM REC 2022; 22:e202200099. [PMID: 35701177 DOI: 10.1002/tcr.202200099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 05/28/2022] [Indexed: 11/10/2022]
Abstract
Multiply aryl/alkyl-substituted pyridines are some of the untapped synthetic targets because of the challenge in regioselectively introducing less polar aryl/alkyl groups at the desired positions in the pyridine framework. Interestingly, the importance of this family of compounds has increased annually, particularly in biological and materials engineering applications. The syntheses of such pyridines have been extensively reported, but there is a lack of comprehensive review articles. Hence, this review discusses recent advances by grouping reaction patterns that generally deliver tri-, tetra-, and penta-aryl/alkyl pyridines.
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Affiliation(s)
- Annisa Indah Reza
- School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
| | - Kento Iwai
- School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan.,Research Center for Molecular Design, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
| | - Nagatoshi Nishiwaki
- School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan.,Research Center for Molecular Design, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
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12
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Anticorrosive Effect of Halogenated Aniline Enaminoesters on Carbon Steel in HCl. INTERNATIONAL JOURNAL OF CORROSION 2022. [DOI: 10.1155/2022/7218063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Four enaminoesters derived from halogenated aniline, with potential anticorrosion activity, were synthesized and tested against carbon steel AISI 1020 in acid medium using 1.0 mol L-1 HCl. The synthesis was demonstrated through the reaction of ethyl acetoacetate with four different amines, in the presence of glacial acetic acid and molecular sieve, using ethanol as solvent for 24 h. The evaluation of the anticorrosive activity was performed using the gravimetric technique and electrochemical methods, such as electrochemical impedance spectroscopy (EIS), linear polarization resistance (LPR), and potentiodynamic polarization (PP). Results indicated that the F-EN (Ethyl (2Z)-3-[(4-fluoro-phenyl)-amino]-but-2-enoate) inhibitor had higher corrosion inhibition efficiency, of 98% by mass loss, and 85% by electrochemical techniques. Adsorption obeyed the Langmuir isotherm, thus suggesting that the inhibitors form a monolayer film in metal surface. These results also contributed to the calculations of the physicochemical parameters of
,
, and
, which confirmed the corrosion inhibition when compared to the absence of the inhibitors.
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13
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Han W, Liu F, Fujisawa K, Oriyama T. Mannich Reaction of α-Aminomaleimides with Imines. CHEM LETT 2021. [DOI: 10.1246/cl.210345] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Wei Han
- Department of Chemistry, Faculty of Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
| | - Fan Liu
- Department of Chemistry, Faculty of Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
| | - Kiyoshi Fujisawa
- Department of Chemistry, Faculty of Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
| | - Takeshi Oriyama
- Department of Chemistry, Faculty of Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
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14
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Wei K, Sun YC, Li R, Zhao JF, Chen W, Zhang H. Synthesis of Highly Functionalized Pyridines: A Metal-Free Cascade Process. Org Lett 2021; 23:6669-6673. [PMID: 34406769 DOI: 10.1021/acs.orglett.1c02234] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Herein, we report a new process for the synthesis of highly functionalized pyridines based on a tandem Pummerer-type rearrangement, aza-Prins cyclization, and elimination-induced aromatization. This formal [5+1] cyclization provides pyridines in good yields with easily accessible starting materials. The synthetic potential of our new method is further demonstrated in the modification of the frameworks of BINOL and some natural products.
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Affiliation(s)
- Kai Wei
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research and Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, P. R. China
| | - Yu-Cui Sun
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research and Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, P. R. China
| | - Rui Li
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research and Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, P. R. China
| | - Jing-Feng Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research and Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, P. R. China
| | - Wen Chen
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research and Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, P. R. China
| | - Hongbin Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research and Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, P. R. China
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15
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Tian Q, Xiao S, Cheng G. Base‐Promoted
Synthesis of
3‐Alkenyl
‐2‐pyridones from
N
‐Propargyl
‐β‐enaminones and Aryl Aldehydes. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100331] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Qingyu Tian
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, College of Materials Science and Engineering, Instrumental Analysis Center, Huaqiao University Xiamen Fujian 361021 China
| | - Shangyun Xiao
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, College of Materials Science and Engineering, Instrumental Analysis Center, Huaqiao University Xiamen Fujian 361021 China
| | - Guolin Cheng
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, College of Materials Science and Engineering, Instrumental Analysis Center, Huaqiao University Xiamen Fujian 361021 China
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16
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Pandey AM, Digrawal NK, Mohanta N, Jamdade AB, Chaudhari MB, Bisht GS, Gnanaprakasam B. Catalytic Acceptorless Dehydrogenation of Amino Alcohols and 2-Hydroxybenzyl Alcohols for Annulation Reaction under Neutral Conditions. J Org Chem 2021; 86:8805-8828. [PMID: 34151556 DOI: 10.1021/acs.joc.1c00714] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A base-free and acceptorless Ru-catalyzed dehydrogenative approach has been developed for the synthesis of N-heterocycles by using 1,3-dicarbonyls and amino alcohols through a domino sequential enamine formation and intramolecular oxidative cyclization strategy. This unified approach is also applicable for the synthesis of O-heterocycles involving 2-hydroxybenzyl alcohol as a coupling reactant via consecutive C-alkylation and intramolecular cyclization steps. The present protocol is general for the synthesis of varieties of biologically important scaffolds, such as tetrahydro-4H-indol-4-one, 3,4-dihydroacridin-1(2H)-one, and tetrahydro-1H-xanthen-1-ones derivatives using a single catalytic system, viz. RuH2CO(PPh3)3. Environmentally benign H2O and H2 are the only byproducts in this domino process. Moreover, RuH2CO(PPh3)3-catalyzed C3-alkylation of tetrahydro-4H-indol-4-one using alcohol as a alkylating partner is also described in this report. For the first time, a solvent-free gram-scale reaction for the acceptorless dehydrogenative annulation has been demonstrated. A plausible mechanism for the Ru-catalyzed base-free and acceptorless dehydrogenative annulation of amino alcohols or 2-hydroxybenzyl alcohols has been provided with several experimental investigations and spectroscopic evidence.
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Affiliation(s)
- Akanksha M Pandey
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
| | - Naveen Kumar Digrawal
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
| | - Nirmala Mohanta
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
| | - Akash Bandu Jamdade
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
| | - Moreshwar B Chaudhari
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
| | - Girish Singh Bisht
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
| | - Boopathy Gnanaprakasam
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
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17
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Jiang Z, Zhou J, Zhu H, Liu H, Zhou Y. Rh(III)-Catalyzed [5 + 1] Annulation of Indole-enaminones with Diazo Compounds To Form Highly Functionalized Carbazoles. Org Lett 2021; 23:4406-4410. [PMID: 34018745 DOI: 10.1021/acs.orglett.1c01341] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A novel Rh(III)-catalyzed C-H activation/annulation cascade of indole-enaminones with diazo compounds was reported to construct diversely functionalized carbazole frameworks. The most notable characteristic is that this transformation could smoothly furnish a novel [5 + 1] cyclization product with good to excellent yields (up to 95%), accompanied by the thorough removal of acetyl and N,N-dimethyl groups of two substrates from the target products, rather than the normally expected [4 + 2] cyclization products.
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Affiliation(s)
- Zhidong Jiang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jianhui Zhou
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.,College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Haoran Zhu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hong Liu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
| | - Yu Zhou
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
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18
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Synthesis of 6,7-Dihydro-1 H,5 H-pyrazolo[1,2- a]pyrazoles by Azomethine Imine-Alkyne Cycloadditions Using Immobilized Cu(II)-Catalysts. Molecules 2021; 26:molecules26020400. [PMID: 33451154 PMCID: PMC7828622 DOI: 10.3390/molecules26020400] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 01/07/2021] [Accepted: 01/11/2021] [Indexed: 11/17/2022] Open
Abstract
A series of 12 silica gel-bound enaminones and their Cu(II) complexes were prepared and tested for their suitability as heterogeneous catalysts in azomethine imine-alkyne cycloadditions (CuAIAC). Immobilized Cu(II)-enaminone complexes showed promising catalytic activity in the CuAIAC reaction, but these new catalysts suffered from poor reusability. This was not due to the decoordination of copper ions, as the use of enaminone ligands with additional complexation sites resulted in negligible improvement. On the other hand, reusability was improved by the use of 4-aminobenzoic acid linker, attached to 3-aminopropyl silica gel via an amide bond to the enaminone over the more hydrolytically stable N-arylenamine C-N bond. The study showed that silica gel-bound Cu(II)-enaminone complexes are readily available and suitable heterogeneous catalysts for the synthesis of 6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazoles.
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19
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Tu X, Huang J, Xie W, Zhu T, Wu J. Generation of (E)-β-sulfonyl enamines from sulfur dioxide via a radical process. Org Chem Front 2021. [DOI: 10.1039/d0qo01551b] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
An iron(ii)-catalyzed three-component reaction of O-acyl oximes, sulfur dioxide, and N-vinylacetamides is accomplished. Diverse (E)-β-sulfonyl enamines are obtained in moderate to good yields by using this protocol with excellent stereoselectivity and regioselectivity.
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Affiliation(s)
- Xiaodong Tu
- School of Chemistry and Chemical Engineering
- Hunan University of Science and Technology
- Xiangtan 411201
- China
| | - Jiapian Huang
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies
- Taizhou University
- Taizhou 318000
- China
| | - Wenlin Xie
- School of Chemistry and Chemical Engineering
- Hunan University of Science and Technology
- Xiangtan 411201
- China
| | - Tonghao Zhu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies
- Taizhou University
- Taizhou 318000
- China
| | - Jie Wu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies
- Taizhou University
- Taizhou 318000
- China
- State Key Laboratory of Organometallic Chemistry
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20
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Rucins M, Smits R, Sipola A, Vigante B, Domracheva I, Turovska B, Muhamadejev R, Pajuste K, Plotniece M, Sobolev A, Duburs G, Plotniece A. Pleiotropic Properties of Amphiphilic Dihydropyridines, Dihydropyridones, and Aminovinylcarbonyl Compounds. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:8413713. [PMID: 33488932 PMCID: PMC7790557 DOI: 10.1155/2020/8413713] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 10/09/2020] [Accepted: 11/10/2020] [Indexed: 11/18/2022]
Abstract
Three groups of synthetic lipids are chosen for studies: (1) 1,4-dihydropyridines (1,4-DHPs) containing two cationic moieties and their analogues; (2) 3,4-dihydro-2(1H)-pyridones containing a cationic moiety; and (3) acyclic, open-chain analogues, i.e., 2-amino-3-alkoxycarbonylalkylammonium derivatives. 1,4-DHPs possessing dodecyl alkyl chains in the ester groups in positions 3 and 5 and cationic nitrogen-containing groups in positions 2 and 6 have high cytotoxicity in cancer cells HT-1080 (human lung fibrosarcoma) and MH-22A (mouse hepatoma), but low cytotoxicity in the noncancerous NIH3T3 cells (mouse embryonic fibroblast). On the contrary, similar compounds having short (methyl, ethyl, or propoxyethyl) chains in the ester groups in positions 3 and 5 lack cytotoxicity in the cancer cells HT-1080 and MH-22A even at high doses. Inclusion of fluorine atoms in the alkyl chains in positions 3 and 5 of the DHP cycle decreases the cytotoxicity of the mentioned compounds. Structurally related dihydropyridones with a polar head group are substantially more toxic to normal and cancerous cells than the DHP analogues. Open-chain analogues of DHP lipids comprise the same conjugated aminovinylcarbonyl moiety and possess anticancer activity, but they also have high basal cytotoxicity. Electrochemical oxidation data demonstrate that oxidation potentials of selected compounds are in the range of 1.6-1.7 V for cationic 1,4-DHP, 2.0-2.4 V for cationic 3,4-dihydropyridones, and 1.2-1.5 V for 2-amino-3-alkoxycarbonylalkylammonium derivatives. Furthermore, the tested cationic 1,4-DHP amphiphiles possess antiradical activity. Molecular topological polar surface area values for the tested compounds were defined in accordance with the main fragments of compound structures. The determined logP values were highest for dodecyl ester groups in positions 3 and 5 of the 1,4-DHP and lowest for short alkyl chain-containing amphiphiles.
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Affiliation(s)
- Martins Rucins
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | - Rufus Smits
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | - Anda Sipola
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | - Brigita Vigante
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | - Ilona Domracheva
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | - Baiba Turovska
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | - Ruslan Muhamadejev
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | - Karlis Pajuste
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | - Mara Plotniece
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Riga Stradiņš University, Dzirciema 16, Riga LV-1007, Latvia
| | - Arkadij Sobolev
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | - Gunars Duburs
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | - Aiva Plotniece
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
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21
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Dienaminodiones, new push-pull alkenes, from 3,4-dihydroxysalicylaldehyde-derived Schiff base. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Shcherbakov KV, Artemyeva MA, Burgart YV, Gerasimova NA, Evstigneeva NP, Saloutin VI. Synthesis of N-Alkyl Enamino
Ketones Based on 3-Acyl-4H-polyfluorochromen-4-ones
and Their Antimicrobial Activity. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2020. [DOI: 10.1134/s1070428020090171] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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23
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Zou N, Lan JX, Yan GG, Liang C, Su GF, Mo DL. Nickel(II)-Catalyzed Oxygen Transfer Reaction of N-Vinyl Nitrones to Prepare 2-(Pyridin-2-yl)ethanols. Org Lett 2020; 22:8446-8450. [DOI: 10.1021/acs.orglett.0c02947] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ning Zou
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China, and School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
| | - Jing-Xuan Lan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China, and School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
| | - Gong-Gui Yan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China, and School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
| | - Cui Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China, and School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
| | - Gui-Fa Su
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China, and School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
| | - Dong-Liang Mo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China, and School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
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24
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Das KK, Panda S. Functionalization of Heterocycles through 1,2‐Metallate Rearrangement of Boronate Complexes. Chemistry 2020; 26:14270-14282. [DOI: 10.1002/chem.202002573] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 07/14/2020] [Indexed: 01/27/2023]
Affiliation(s)
| | - Santanu Panda
- Indian Institute of Technology Kharagpur 721302 India
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25
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El‐Mekabaty A, Etman HA, Mosbah A, Fadda AA. Synthesis, In Vitro Cytotoxicity and Bleomycin‐Dependent DNA Damage Evaluation of Some Heterocyclic‐Fused Pyrimidinone Derivatives. ChemistrySelect 2020. [DOI: 10.1002/slct.202001006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ahmed El‐Mekabaty
- Department: ChemistryInstitution: Faculty of ScienceMansoura UniversityMansoura (Egypt)Address 1: Chemistry DepartmentFaculty of ScienceMansoura University El-Gomhoria Street ET 35516 Mansoura Egypt
| | - Hassan A. Etman
- Department: ChemistryInstitution: Faculty of ScienceMansoura UniversityMansoura (Egypt)Address 1: Chemistry DepartmentFaculty of ScienceMansoura University El-Gomhoria Street ET 35516 Mansoura Egypt
| | - Ahmed Mosbah
- Department: ChemistryInstitution: Faculty of ScienceMansoura UniversityMansoura (Egypt)Address 1: Chemistry DepartmentFaculty of ScienceMansoura University El-Gomhoria Street ET 35516 Mansoura Egypt
| | - Ahmed A. Fadda
- Department: ChemistryInstitution: Faculty of ScienceMansoura UniversityMansoura (Egypt)Address 1: Chemistry DepartmentFaculty of ScienceMansoura University El-Gomhoria Street ET 35516 Mansoura Egypt
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26
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Mikami S, Okada S, Kishimoto R, Takabatake T, Toyota M. Pd(OAc)2-catalyzed one-pot preparation of anthranilates from acyclic unsaturated β-enamino esters. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151659] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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27
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Zalte RR, Festa AA, Golantsov NE, Subramani K, Rybakov VB, Varlamov AV, Luque R, Voskressensky LG. Aza-Henry and aza-Knoevenagel reactions of nitriles for the synthesis of pyrido[1,2-a]indoles. Chem Commun (Camb) 2020; 56:6527-6530. [DOI: 10.1039/d0cc01652g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
N-(Propargyl)indole-2-carbonitriles undergo DBU-catalyzed addition of CH-acids to nitriles, followed by cyclization to give 9-aminopyrido[1,2-a]indoles.
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Affiliation(s)
- Rajesh R. Zalte
- Organic Chemistry Department
- Science Faculty
- Peoples’ Friendship University of Russia (RUDN University)
- Moscow
- Russia
| | - Alexey A. Festa
- Organic Chemistry Department
- Science Faculty
- Peoples’ Friendship University of Russia (RUDN University)
- Moscow
- Russia
| | - Nikita E. Golantsov
- Organic Chemistry Department
- Science Faculty
- Peoples’ Friendship University of Russia (RUDN University)
- Moscow
- Russia
| | - Karthikeyan Subramani
- Organic Chemistry Department
- Science Faculty
- Peoples’ Friendship University of Russia (RUDN University)
- Moscow
- Russia
| | - Victor B. Rybakov
- Department of Chemistry
- Lomonosov Moscow State University
- Moscow
- Russia
| | - Alexey V. Varlamov
- Organic Chemistry Department
- Science Faculty
- Peoples’ Friendship University of Russia (RUDN University)
- Moscow
- Russia
| | - Rafael Luque
- Organic Chemistry Department
- Science Faculty
- Peoples’ Friendship University of Russia (RUDN University)
- Moscow
- Russia
| | - Leonid G. Voskressensky
- Organic Chemistry Department
- Science Faculty
- Peoples’ Friendship University of Russia (RUDN University)
- Moscow
- Russia
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28
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Zhang J, Yang M, Liu JB, He FS, Wu J. A copper-catalyzed insertion of sulfur dioxide via radical coupling. Chem Commun (Camb) 2020; 56:3225-3228. [DOI: 10.1039/d0cc00375a] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A copper-catalyzed reaction of O-acyl oximes, DABCO·(SO2)2, and 2H-azirines is developed under mild conditions, leading to diverse tetrasubstituted β-sulfonyl N-unprotected enamines with excellent stereoselectivity and regioselectivity.
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Affiliation(s)
- Jun Zhang
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Taizhou 318000
- China
| | - Min Yang
- School of Pharmacy
- Gannan Medical University
- Ganzhou 341000
- China
| | - Jin-Biao Liu
- School of Metallurgical and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- China
| | - Fu-Sheng He
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Taizhou 318000
- China
| | - Jie Wu
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Taizhou 318000
- China
- State Key Laboratory of Organometallic Chemistry
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29
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Wu P, He Y, Wang H, Zhou YG, Yu Z. Copper(II)-Catalyzed C–H Nitrogenation/Annulation Cascade of Ketene N,S-Acetals with Aryldiazonium Salts: A Direct Access to N2-Substituted Triazole and Triazine Derivatives. Org Lett 2019; 22:310-315. [DOI: 10.1021/acs.orglett.9b04335] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Ping Wu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Yuan He
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Hongmei Wang
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, P.R. China
| | - Yong-Gui Zhou
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P.R. China
| | - Zhengkun Yu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P.R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, P.R. China
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