1
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Zhang SY, Li Z, Hu LY, Li JT, Wu L. Access Polyarylbipyrazoles via Palladium-Catalysis and Visible-Light-Driven C(sp 3)-P(V) Cleavage Relay Strategy. Org Lett 2024; 26:2949-2954. [PMID: 38598254 DOI: 10.1021/acs.orglett.4c00503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
An unprecedented palladium-catalyzed and visible-light-driven relay reaction of allenylphosphine oxide with in situ generated nitrile imines is presented for the direct synthesis of highly valuable polyarylbipyrazole skeletons. This one-pot strategy involves double 1,3-dipolar cycloaddition and C(sp3)-P(V) bond cleavage under photocatalyst-free and mild reaction conditions. The approach features simple operation, a high step economy, and a broad substrate scope, affording the corresponding products in moderate to excellent yields.
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Affiliation(s)
- Shen-Yuan Zhang
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, Peoples's Republic of China
| | - Zhi Li
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, Peoples's Republic of China
| | - Li-Yan Hu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, Peoples's Republic of China
| | - Jin-Tao Li
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, Peoples's Republic of China
| | - Lei Wu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, Peoples's Republic of China
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2
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Jiao Y, Zhu J, Han N, Shen R, Zhang Y, Rong L, Zhang J. Three-Component Reaction for the Synthesis of Spiro-Heterocycles from Isatins, Substituted Ureas, and Cyclic Ketones. J Org Chem 2024; 89:3441-3452. [PMID: 38377488 DOI: 10.1021/acs.joc.3c02894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
We reported an efficient three-component reaction to access new spiro heterocycles through the annulation reactions of isatins, substituted ureas, and cyclic ketones under normal laboratory conditions, which is another example of isatins being used to build spiro compounds by the ring-opening and recyclization processes. The wide range of substrates, simple operation, normal experimental conditions, and high yields make the approach of high practical value.
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Affiliation(s)
- Yang Jiao
- Jiangsu Engineering Research Center of Biological Data Mining and Healthcare Transformation, Xuzhou Medical University, Xuzhou 221004, Jiangsu, PR China
| | - Junyi Zhu
- Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
| | - Niankun Han
- Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
| | - Rongcheng Shen
- Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
| | - Yiru Zhang
- Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
| | - Liangce Rong
- Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
| | - Jinpeng Zhang
- Jiangsu Engineering Research Center of Biological Data Mining and Healthcare Transformation, Xuzhou Medical University, Xuzhou 221004, Jiangsu, PR China
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3
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Singh H, Kumar R, Mazumder A. Pyrazoline and Analogs: Substrate-based Synthetic Strategies. Curr Org Synth 2024; 21:823-836. [PMID: 37608650 DOI: 10.2174/1570179421666230822100043] [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: 03/07/2023] [Revised: 06/25/2023] [Accepted: 07/19/2023] [Indexed: 08/24/2023]
Abstract
Among the many reports published on strategies applicable to synthesizing pyrazolines and its analogs, The 1,3-dipolar cycloaddition offers a remarkably wide range of utility. Many 1,3-dipolar cycloaddition reactions used for the synthesis of pyrazolines provide better selectivity, eco-friendly, and less expensive chemical processes. In the presented study, we have reviewed various recently adopted strategies for the synthesis of pyrazoline, which followed the 1,3-dipolar cycloaddition reactions mechanism and classified them based on starting materials such as nitrile imines, diazo compounds, different zwitter ions, chalcones, and isoprene units. The manuscript also focused on the synthesis of pyrazolines starting from Seyferth-Gilbert reagents (SGR) and Psilostachyin (PSH) reagents. We hope this work will help those engaged or have plans to research pyrazoline or its analogs, as synthetic protocols based on starting material are rarely available for pyrazolines. Thus, this article holds a valuable complement to the development of newer pyrazoline and its derivatives.
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Affiliation(s)
- Himanshu Singh
- Department of Pharmaceutical Chemistry, Noida Institute of Engineering and Technology (Pharmacy Institute), Greater Noida, India
| | - Rajnish Kumar
- Department of Pharmaceutical Chemistry, Noida Institute of Engineering and Technology (Pharmacy Institute), Greater Noida, India
| | - Avijit Mazumder
- Department of Pharmaceutical Chemistry, Noida Institute of Engineering and Technology (Pharmacy Institute), Greater Noida, India
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4
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Zhu P, Zheng J, Yan J, Li Z, Li X, Geng H. Design, Synthesis, and Biological Evaluation of N'-Phenylhydrazides as Potential Antifungal Agents. Int J Mol Sci 2023; 24:15120. [PMID: 37894800 PMCID: PMC10606473 DOI: 10.3390/ijms242015120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 09/19/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
Fifty-two kinds of N'-phenylhydrazides were successfully designed and synthesized. Their antifungal activity in vitro against five strains of C. albicans (Candida albicans) was evaluated. All prepared compounds showed varying degrees of antifungal activity against C. albicans and their MIC80 (the concentration of tested compounds when their inhibition rate was at 80%), TAI (total activity index), and TSI (total susceptibility index) were calculated. The inhibitory activities of 27/52 compounds against fluconazole-resistant fungi C. albicans 4395 and 5272 were much better than those of fluconazole. The MIC80 values of 14/52 compounds against fluconazole-resistant fungus C. albicans 5122 were less than 4 μg/mL, so it was the most sensitive fungus (TSIB = 12.0). A11 showed the best inhibitory activity against C. albicans SC5314, 4395, and 5272 (MIC80 = 1.9, 4.0, and 3.7 μg/mL). The antifungal activities of B14 and D5 against four strains of fluconazole-resistant fungi were better than those of fluconazole. The TAI values of A11 (2.71), B14 (2.13), and D5 (2.25) are the highest. Further exploration of antifungal mechanisms revealed that the fungus treated with compound A11 produced free radicals and reactive oxygen species, and their mycelium morphology was damaged. In conclusion, the N'-phenylhydrazide scaffold showed potential in the development of antifungal lead compounds. Among them, A11, B14, and D5 demonstrated particularly promising antifungal activity and held potential as novel antifungal agents.
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Affiliation(s)
- Panpan Zhu
- College of Chemistry & Pharmacy, Northwest A & F University, Yangling 712100, China
- Key Laboratory of Botanical Pesticide R & D in Shaanxi Province, Northwest A & F University, Yangling 712100, China
| | - Jinshuo Zheng
- College of Chemistry & Pharmacy, Northwest A & F University, Yangling 712100, China
| | - Jin Yan
- College of Chemistry & Pharmacy, Northwest A & F University, Yangling 712100, China
| | - Zhaoxia Li
- College of Chemistry & Pharmacy, Northwest A & F University, Yangling 712100, China
| | - Xinyi Li
- College of Chemistry & Pharmacy, Northwest A & F University, Yangling 712100, China
| | - Huiling Geng
- College of Chemistry & Pharmacy, Northwest A & F University, Yangling 712100, China
- Key Laboratory of Botanical Pesticide R & D in Shaanxi Province, Northwest A & F University, Yangling 712100, China
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5
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Li Y, Xu W, Lei X, Xi J, Zou J, Wang G, He ZL. Base-Mediated Tandem [3 + 2] Cycloaddition/Ring Openning Reaction of Arylhydrazonoyl Chlorides with Arylnitroso Compounds for Synthesis of Substituted Diazene Oxides. J Org Chem 2023; 88:14200-14204. [PMID: 37726890 DOI: 10.1021/acs.joc.3c01427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
A base-mediated tandem [3 + 2] cycloaddition/ring opening reaction of nitrilimines generated from arylhydrazonoyl chlorides with arylnitroso compounds has been developed. This protocol provides a novel and rapid approach for the synthesis of substituted azoxy compounds under mild conditions with moderate to good yields and a broad substrate scope.
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Affiliation(s)
- Yi Li
- School of Chemistry and Environmental Engineering, Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan, 430205, P. R. China
| | - Weinan Xu
- School of Chemistry and Environmental Engineering, Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan, 430205, P. R. China
| | - Xidan Lei
- School of Chemistry and Environmental Engineering, Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan, 430205, P. R. China
| | - Jiangbo Xi
- School of Chemistry and Environmental Engineering, Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan, 430205, P. R. China
| | - Jing Zou
- School of Chemistry and Environmental Engineering, Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan, 430205, P. R. China
| | - Gang Wang
- School of Chemistry and Environmental Engineering, Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan, 430205, P. R. China
| | - Zhao-Lin He
- School of Chemistry and Environmental Engineering, Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan, 430205, P. R. China
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6
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He ZL, Tian W, Wang G. Oxidative (3+3) Cycloaddition/Ring-Opening Reactions of Simple Urea Derivatives and N, N'-Cyclic Azomethine Imines to Construct 1,2,3,5-Tetrazine-4(1 H)-one Derivatives. J Org Chem 2023. [PMID: 37257156 DOI: 10.1021/acs.joc.3c00525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A novel oxidative (3 + 3) cycloaddition/ring-opening reaction of N,N'-cyclic azomethine imines with the in situ generated diaza-oxylallyl cations from simple urea derivatives in the presence of base and PhI(OAc)2 has been developed. This transformation performs well over a broad substrate scope, which provides facile and rapid access to 1,2,3,5-tetrazine-4(1H)-one derivatives in good yields.
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Affiliation(s)
- Zhao-Lin He
- School of Chemistry and Environmental Engineering, Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan 430205, P. R. China
| | - Wen Tian
- School of Chemistry and Environmental Engineering, Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan 430205, P. R. China
| | - Gang Wang
- School of Chemistry and Environmental Engineering, Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan 430205, P. R. China
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7
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Li G, Zhang H, Zhang G, Wei B, Liu B, Song H, Li Q, Ban S. Asymmetric Synthesis of Spiropyrazolone-Fused Dihydrofuran-naphthoquinones Bearing Contiguous Stereocenters via a Michael Addition/Chlorination/Nucleophilic Substitution Sequence. J Org Chem 2023; 88:4809-4813. [PMID: 36945756 DOI: 10.1021/acs.joc.2c03013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
An enantioselective synthesis of spiropyrazolone-fused dihydrofuran-naphthoquinones is first demonstrated via a Michael addition/Chlorination/Nucleophilic substitution sequence. The reactions of 2-hydroxy-1,4-naphthoquinone and α,β-unsaturated pyrazolones in the presence of the cinchona alkaloid derived hydrogen-bonding catalyst and NCS provide spiropyrazolone-fused 2,3-dihydronaphtho[2,3-b]furan-4,9-diones bearing contiguous stereocenters, of which one is the spiro quaternary stereocenter in high yields with exclusive diastereoselectivity and good to excellent enantioselectivities.
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Affiliation(s)
- Gaihui Li
- School of Pharmacy, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Hongyu Zhang
- School of Pharmacy, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Guoshun Zhang
- School of Pharmacy, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Bei Wei
- School of Pharmacy, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Bin Liu
- School of Pharmacy, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Heng Song
- School of Pharmacy, Shanxi Medical University, Taiyuan, Shanxi 030001, China
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Qingshan Li
- School of Pharmacy, Shanxi Medical University, Taiyuan, Shanxi 030001, China
- Shanxi Key laboratory of Chronic Inflammatory Targeted Drugs, Shanxi University of Traditional Chinese Medicine, Jinzhong, Shanxi 030619, China
| | - Shurong Ban
- School of Pharmacy, Shanxi Medical University, Taiyuan, Shanxi 030001, China
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8
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Algieri V, Algieri C, Costanzo P, Fiorani G, Jiritano A, Olivito F, Tallarida MA, Trombetti F, Maiuolo L, De Nino A, Nesci S. Novel Regioselective Synthesis of 1,3,4,5-Tetrasubstituted Pyrazoles and Biochemical Valuation on F 1F O-ATPase and Mitochondrial Permeability Transition Pore Formation. Pharmaceutics 2023; 15:498. [PMID: 36839821 PMCID: PMC9967880 DOI: 10.3390/pharmaceutics15020498] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/20/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023] Open
Abstract
An efficient, eco-compatible, and very cheap method for the construction of fully substituted pyrazoles (Pzs) via eliminative nitrilimine-alkene 1,3-dipolar cycloaddition (ENAC) reaction was developed in excellent yield and high regioselectivity. Enaminones and nitrilimines generated in situ were selected as dipolarophiles and dipoles, respectively. A deep screening of the employed base, solvent, and temperature was carried out to optimize reaction conditions. Recycling tests of ionic liquid were performed, furnishing efficient performance until six cycles. Finally, a plausible mechanism of cycloaddition was proposed. Then, the effect of three different structures of Pzs was evaluated on the F1FO-ATPase activity and mitochondrial permeability transition pore (mPTP) opening. The Pz derivatives' titration curves of 6a, 6h, and 6o on the F1FO-ATPase showed a reduced activity of 86%, 35%, and 31%, respectively. Enzyme inhibition analysis depicted an uncompetitive mechanism with the typical formation of the tertiary complex enzyme-substrate-inhibitor (ESI). The dissociation constant of the ESI complex (Ki') in the presence of the 6a had a lower order of magnitude than other Pzs. The pyrazole core might set the specific mechanism of inhibition with the F1FO-ATPase, whereas specific functional groups of Pzs might modulate the binding affinity. The mPTP opening decreased in Pz-treated mitochondria and the Pzs' inhibitory effect on the mPTP was concentration-dependent with 6a and 6o. Indeed, the mPTP was more efficiently blocked with 0.1 mM 6a than with 1 mM 6a. On the contrary, 1 mM 6o had stronger desensitization of mPTP formation than 0.1 mM 6o. The F1FO-ATPase is a target of Pzs blocking mPTP formation.
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Affiliation(s)
- Vincenzo Algieri
- Department of Chemistry and Chemical Technologies, University of Calabria, Via P. Bucci, Cubo 12C, 87036 Rende, CS, Italy
| | - Cristina Algieri
- Department of Veterinary Medical Sciences, Mitochondrial Biochemistry Lab, Via Tolara di Sopra, 50, 40064 Ozzano Emilia, BO, Italy
| | - Paola Costanzo
- Department of Chemistry and Chemical Technologies, University of Calabria, Via P. Bucci, Cubo 12C, 87036 Rende, CS, Italy
| | - Giulia Fiorani
- Department Molecular Sciences and Nanosystems, University Ca’ Foscari Venezia, Via Torino 155, 30172 Venezia Mestre, VE, Italy
| | - Antonio Jiritano
- Department of Chemistry and Chemical Technologies, University of Calabria, Via P. Bucci, Cubo 12C, 87036 Rende, CS, Italy
| | - Fabrizio Olivito
- Department of Chemistry and Chemical Technologies, University of Calabria, Via P. Bucci, Cubo 12C, 87036 Rende, CS, Italy
| | - Matteo Antonio Tallarida
- Department of Chemistry and Chemical Technologies, University of Calabria, Via P. Bucci, Cubo 12C, 87036 Rende, CS, Italy
| | - Fabiana Trombetti
- Department of Veterinary Medical Sciences, Mitochondrial Biochemistry Lab, Via Tolara di Sopra, 50, 40064 Ozzano Emilia, BO, Italy
| | - Loredana Maiuolo
- Department of Chemistry and Chemical Technologies, University of Calabria, Via P. Bucci, Cubo 12C, 87036 Rende, CS, Italy
| | - Antonio De Nino
- Department of Chemistry and Chemical Technologies, University of Calabria, Via P. Bucci, Cubo 12C, 87036 Rende, CS, Italy
| | - Salvatore Nesci
- Department of Veterinary Medical Sciences, Mitochondrial Biochemistry Lab, Via Tolara di Sopra, 50, 40064 Ozzano Emilia, BO, Italy
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9
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Filkina ME, Baray DN, Beloglazkina EK, Grishin YK, Roznyatovsky VA, Kukushkin ME. Regioselective Cycloaddition of Nitrile Imines to 5-Methylidene-3-phenyl-hydantoin: Synthesis and DFT Calculations. Int J Mol Sci 2023; 24:1289. [PMID: 36674803 PMCID: PMC9864863 DOI: 10.3390/ijms24021289] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/04/2023] [Accepted: 01/07/2023] [Indexed: 01/11/2023] Open
Abstract
Nitrile imine cycloaddition to hydantoins containing an exocyclic C=C double bond has been previously described in a very limited number of examples. In this work, regioselective synthesis of spiro-pyrazoline-imidazolidine-2,4-diones based on a 1,3-dipolar cycloaddition reaction of nitrile imines to 5-methylidene-3-phenyl-hydantoin have been proposed. It was found that, regardless of the nature of the aryl substituents at the terminal C and N atoms of the C-N-N fragment of nitrile imine (electron donor or electron acceptor), cycloaddition to the 5-methylidenhydantoin exocyclic C=C bond proceeds regioselectively, and the terminal nitrogen atom of the nitrile imine connects to the more sterically hindered carbon atom of the double bond, which leads to the formation of a 5-disubstituted pyrazoline ring. The observed cycloaddition regioselectivity was rationalized using DFT calculations of frontier molecular orbital interactions, global CDFT reactivity indices, and minimum energy paths.
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Affiliation(s)
| | | | - Elena K. Beloglazkina
- Department of Chemistry, M.V. Lomonosov Moscow State University, Leninskie Gory, 1-3, 119991 Moscow, Russia
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10
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Xu Q, Jia J, Wu Y, Hu B, Xin J, Liu Y, Gao W, Li D. Ag 2O-Induced Regioselective Huisgen Cycloaddition for the Synthesis of Fully Substituted Pyrazoles as Potential Anticancer Agents. J Org Chem 2022; 87:14496-14506. [PMID: 36278313 DOI: 10.1021/acs.joc.2c01910] [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
Efficient regioselective synthesis of novel fully substituted pyrazoles has been achieved through Huisgen cycloaddition reaction of δ-acetoxy allenoates with hydrazonoyl chlorides by the addition of Ag2O. The present approach offers the advantages of simpleness, high efficiency, mild conditions, wide substrate scope, and good-to-excellent regioselectivities. The strategy could be performed on a large-scale pattern to allow access to structurally versatile pyrazoles, of which a key intermediate of lonazolac (303), a nonsteroidal anti-inflammatory drug, could be synthesized efficiently. Moreover, several pyrazoles show obvious growth-inhibitory activity of Huh-7 cells, expected as potential anticancer agents.
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Affiliation(s)
- Qianqian Xu
- School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China
| | - Jifan Jia
- School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China
| | - Yuqing Wu
- School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China
| | - Bo Hu
- School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China
| | - Jiaqi Xin
- School of Traditional Chinese Medicine, Capital Medical University, Beijing 100069, China
| | - Yi Liu
- School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
| | - Wei Gao
- School of Traditional Chinese Medicine, Capital Medical University, Beijing 100069, China
| | - Dan Li
- School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China
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11
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Hajinasiri R. Allenoates in organic synthesis. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Convenient generation of 1,3-dipolar nitrilimines and [3 + 2] cycloaddition for the synthesis of spiro compounds. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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13
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Wang KK, Li YL, Jing J, Chen R, Zhao NN, Li ZH, Wang MY, Ji SK. Synthesis of 1,3,5-trisubstituted pyrazoles via 1,3-dipolar cycloaddition of nitrile imines with ninhydrin-derived Morita-Baylis-Hillman carbonates. Org Biomol Chem 2022; 20:6923-6930. [PMID: 35979893 DOI: 10.1039/d2ob01253g] [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
An effective synthetic method for 1,3,5-trisubstituted pyrazoles via 1,3-dipolar cycloaddition reaction has been developed. This reaction could smoothly proceed between ninhydrin-derived Morita-Baylis-Hillman carbonates and nitrilimines to provide a wide scope of differently substituted pyrazoles in high yields (up to 95%). In addition, the reaction mechanism was also proposed to explain its regioselectivity.
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Affiliation(s)
- Kai-Kai Wang
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
| | - Yan-Li Li
- Medical College, Xinxiang University, Xinxiang 453000, P.R. of China
| | - Jun Jing
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
| | - Rongxiang Chen
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
| | - Na-Na Zhao
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
| | - Zhi-Hui Li
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
| | - Ming-Yue Wang
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
| | - Shuo-Ke Ji
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
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14
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Deepthi A, Acharjee N, Sruthi S, Meenakshy C. An overview of nitrile imine based [3+2] cycloadditions over half a decade. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132812] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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15
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Wang Y, Xiong C, Zhong J, Zhou Q. Synthesis of 1,3,5-trisubstituted pyrazole-4-carboxylates through 1,3-dipolar cycloaddition of nitrilimines with allenoates. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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16
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Reaction Products of β-Aminopropioamidoximes Nitrobenzenesulfochlorination: Linear and Rearranged to Spiropyrazolinium Salts with Antidiabetic Activity. Molecules 2022; 27:molecules27072181. [PMID: 35408580 PMCID: PMC9000269 DOI: 10.3390/molecules27072181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 03/20/2022] [Accepted: 03/24/2022] [Indexed: 12/10/2022] Open
Abstract
Nitrobenzenesulfochlorination of β-aminopropioamidoximes leads to a set of products depending on the structure of the initial interacting substances and reaction conditions. Amidoximes, functionalized at the terminal C atom with six-membered N-heterocycles (piperidine, morpholine, thiomorpholine and phenylpiperazine), as a result of the spontaneous intramolecular heterocyclization of the intermediate reaction product of an SN2 substitution of a hydrogen atom in the oxime group of the amidoxime fragment by a nitrobenzenesulfonyl group, produce spiropyrazolinium ortho- or para-nitrobenzenesulfonates. An exception is ortho-nitrobenzenesulfochlorination of β-(thiomorpholin-1-yl)propioamidoxime, which is regioselective at room temperature, producing two spiropyrazolinium salts (ortho-nitrobezenesulfonate and chloride), and regiospecific at the boiling point of the solvent, when only chloride is formed. The para-Nitrobezenesulfochlorination of β-(benzimidazol-1-yl)propioamidoxime, due to the reduced nucleophilicity of the aromatic β-amine nitrogen atom, is regiospecific at both temperatures, and produces the O-para-nitrobenzenesulfochlorination product. The antidiabetic screening of the new nitrobezenesulfochlorination amidoximes found promising samples with in vitro α-glucosidase activity higher than the reference drug acarbose. 1H-NMR spectroscopy and X-ray analysis revealed the slow inversion of six-membered heterocycles, and experimentally confirmed the presence of an unfavorable stereoisomer with an axial N–N bond in the pyrazolinium heterocycle.
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17
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Tu L, Gao L, Wang Q, Cao Z, Huang R, Zheng Y, Liu J. Substrate-Switched Chemodivergent Pyrazole and Pyrazoline Synthesis: [3 + 2] Cycloaddition/Ring-Opening Rearrangement Reaction of Azadienes with Nitrile Imines. J Org Chem 2022; 87:3389-3401. [PMID: 35157462 DOI: 10.1021/acs.joc.1c02998] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
By virtue of a fundamentally new reaction model of benzofuran-derived azadienes (BDAs), an unprecedented synthesis of biologically important pyrazoles has been achieved through a tandem [3 + 2] cycloaddition/ring-opening rearrangement reaction of BDAs with nitrile imines. The nature and type of substrates are found to act as a chemical switch to trigger two distinct reaction pathways. A minor modification to the substrates allows the access to spiro-pyrazolines.
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Affiliation(s)
- Liang Tu
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Limei Gao
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Qiang Wang
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Zhixing Cao
- Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Rong Huang
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Yongsheng Zheng
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China.,National Demonstration Center for Experimental Ethnopharmacology Education, South-Central University for Nationalities, Wuhan 430074, China
| | - Jikai Liu
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
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18
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Yuan C, Ning X, Gao T, Zeng Z, Lee K, Xing Y, Sun S, Wang G. [3+2] Cycloaddition of Nitrile Imines with 3‐Benzylidene Succinimides: A Facile Access to Functionalized Spiropyrazolines. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Cheng Yuan
- School of Pharmacy Hubei University of Science and Technology 437100 Xianning P. R. China
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials Non-power Nuclear Technology Collaborative Innovation Center School of Nuclear Technology and Chemistry & Biology Hubei University of Science and Technology Xianning 437100 P. R. China
| | - Xiaojun Ning
- School of Pharmacy Hubei University of Science and Technology 437100 Xianning P. R. China
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials Non-power Nuclear Technology Collaborative Innovation Center School of Nuclear Technology and Chemistry & Biology Hubei University of Science and Technology Xianning 437100 P. R. China
| | - Tao Gao
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials Non-power Nuclear Technology Collaborative Innovation Center School of Nuclear Technology and Chemistry & Biology Hubei University of Science and Technology Xianning 437100 P. R. China
| | - Zhigang Zeng
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials Non-power Nuclear Technology Collaborative Innovation Center School of Nuclear Technology and Chemistry & Biology Hubei University of Science and Technology Xianning 437100 P. R. China
| | - Kevin Lee
- Department of Chemistry William Paterson University of New Jersey Wayne 07470 New Jersey
| | - Yalan Xing
- Department of Chemistry William Paterson University of New Jersey Wayne 07470 New Jersey
| | - Shaofa Sun
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials Non-power Nuclear Technology Collaborative Innovation Center School of Nuclear Technology and Chemistry & Biology Hubei University of Science and Technology Xianning 437100 P. R. China
| | - Gangqiang Wang
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials Non-power Nuclear Technology Collaborative Innovation Center School of Nuclear Technology and Chemistry & Biology Hubei University of Science and Technology Xianning 437100 P. R. China
- School of Pharmaceutical Sciences South-Central University for Nationalities Wuhan 430074 P. R. China
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19
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Alizadeh A, Bagherinejad A, Kayanian J, Vianello R. An experimental and computational study of new spiro-barbituric acid pyrazoline scaffolds: restricted rotation vs. annular tautomerism. NEW J CHEM 2022. [DOI: 10.1039/d1nj06208e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A regioselective [3+2] cycloaddition (32CA) reaction to synthesize unsymmetric spiro-barbituric pyrazolines containing a chromone or phenolic pyrazole moiety was achieved, providing good to excellent yields.
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Affiliation(s)
- Abdolali Alizadeh
- Department of Chemistry, Tarbiat Modares University, P. O. Box 14115-175, Tehran, Iran
| | - Akram Bagherinejad
- Department of Chemistry, Tarbiat Modares University, P. O. Box 14115-175, Tehran, Iran
| | - Jasmine Kayanian
- Department of Chemistry, Tarbiat Modares University, P. O. Box 14115-175, Tehran, Iran
| | - Robert Vianello
- Laboratory for the Computational Design and Synthesis of Functional Materials, Department of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička 54, 10000 Zagreb, Croatia
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20
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Synthesis of Pyrazoles through [3+2] Cyclization of Nitrile Imines with Cinnamaldehydes Followed by Air Oxidation. ChemistrySelect 2021. [DOI: 10.1002/slct.202103915] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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21
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A DFT study of the double (3 + 2) cycloaddition of nitrile oxides and allenoates for the formation of spirobiisoxazolines. J Mol Graph Model 2021; 109:108033. [PMID: 34534890 DOI: 10.1016/j.jmgm.2021.108033] [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: 07/09/2021] [Revised: 08/25/2021] [Accepted: 09/05/2021] [Indexed: 11/20/2022]
Abstract
The molecular mechanism of the double (3 + 2) cycloaddition (32CA) reaction between nitrile oxides and allenoates has been studied using density functional theory at the M06-2X/6-311G (d,p) level of theory. In the first 32CA, the nitrile oxide adds chemo- and regio-selectively to the C-C double bond of the allenoate closest to the carboxylate group followed by a subsequent regioselective addition to the olefinic bond of the isoxazoline intermediate. The rate constant for the preferred pathway (formation of 4-methylene-2-isoxazoline intermediate) in the reaction of ethyl substituted allenoate and mesitonitrile oxide is 5.3 × 102 s-1 in THF which is about 13 times faster than the closest competing step (formation of its regioisomer 5-methylene-2-isoxazoline intermediate) which has a rate constant of 4.4 × 101 s-1. Strong electron-donating groups (EDGs) and electron-withdrawing groups (EWGs) decrease activation barriers and hence increase the reaction rate. Also, the dimerization of nitrile oxide to form furaxon is found to be kinetically unfavored.
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22
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Yavari I, Fadakar Y. Reverse orientation in the ultrasound-assisted [3 + 2]-cycloaddition reaction of nitrile imines with 3-formylchromone-Meldrum's acid adducts. Mol Divers 2021; 26:1141-1150. [PMID: 34129183 DOI: 10.1007/s11030-021-10240-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 05/28/2021] [Indexed: 11/26/2022]
Abstract
The [3 + 2]-cycloaddition reaction of nitrile imines with 2,2-dimethyl-5-[(4-oxo-4H-chromen-3-yl)methylene]-1,3-dioxane-4,6-dione tends to form the reverse-orientation products under ultrasound irradiation in EtOH in the presence of Et3N. Evidence for the structure of product 5b was obtained from single-crystal X-ray analysis.
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Affiliation(s)
- Issa Yavari
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran.
| | - Younes Fadakar
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran
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23
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Wang KK, Li YL, Guo DG, Pan PT, Sun A, Chen R. Synthesis of spiro[4.4]thiadiazole derivatives via double 1,3-dipolar cycloaddition of hydrazonyl chlorides with carbon disulfide. RSC Adv 2021; 11:18404-18407. [PMID: 35480901 PMCID: PMC9033500 DOI: 10.1039/d1ra03229a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 05/17/2021] [Indexed: 12/11/2022] Open
Abstract
An operationally simple and convenient synthesis method toward a series of diverse spiro[4.4]thiadiazole derivatives via double [3 + 2] 1,3-dipolar cycloaddition of nitrilimines generated in situ from hydrazonyl chlorides with carbon disulfide has been achieved under mild reaction conditions.
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Affiliation(s)
- Kai-Kai Wang
- School of Pharmacy, Key Laboratory of Nano-carbon Modified Film Technology Engineering of Henan Province Xinxiang 453000 P. R. China +86-373-3682674
| | - Yan-Li Li
- Medical College, Xinxiang University Xinxiang 453000 P. R. China
| | - Dong-Guang Guo
- School of Life Sciences and Basic Medicine, Xinxiang University Xinxiang 453000 P. R. China
| | - Peng-Tao Pan
- Medical College, Xinxiang University Xinxiang 453000 P. R. China
| | - Aili Sun
- School of Pharmacy, Key Laboratory of Nano-carbon Modified Film Technology Engineering of Henan Province Xinxiang 453000 P. R. China +86-373-3682674
| | - Rongxiang Chen
- School of Pharmacy, Key Laboratory of Nano-carbon Modified Film Technology Engineering of Henan Province Xinxiang 453000 P. R. China +86-373-3682674
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24
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Gettings ML, Davis Finch SE, Sethia A, Byrd EFC, Zeller M, Piercey DG. Heterocyclic Nitrilimines and Their Use in the Synthesis of Complex High-Nitrogen Materials. Inorg Chem 2021; 60:7607-7611. [PMID: 33970605 DOI: 10.1021/acs.inorgchem.1c00469] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We show the ability of a nitrilimine prepared from 3-amino-5-nitro-1,2,4-triazole to undergo various cyclization and rearrangement reactions, giving a beautiful diversity of nitrogen-rich heterocyclic products. This chemistry includes the first cyclization of a nitrilimine with a diazonium species, giving a tetrazole, a previously unknown transformation, as well as leading to the creation of several new energetic materials with backbones not available by traditional techniques. New materials prepared were characterized both chemically (multinuclear NMR, IR, mass spectrometry, and elemental analysis) and energetically, with sensitivities and performances reported.
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Affiliation(s)
- Matthew L Gettings
- Department of Materials Engineering, Purdue University, 205 Gates Road, West Lafayette, Indiana 47906, United States.,Purdue Energetics Research Center, Purdue University, 205 Gates Road, West Lafayette, Indiana 47906, United States.,Department of Chemistry & Life Science, U.S. Military Academy, West Point, New York 10996, United States
| | - Sarah E Davis Finch
- Department of Mechanical Engineering, Purdue University, 205 Gates Road, West Lafayette, Indiana 47906, United States
| | - Ashank Sethia
- College of Engineering, Purdue Energetics Research Center, Purdue University, West Lafayette, Indiana 47906, United States
| | - Edward F C Byrd
- Detonation Sciences & Modeling Branch, CCDC U.S. Army Research Laboratory, Aberdeen Proving Ground, Maryland 21005, United States
| | - Matthias Zeller
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Davin G Piercey
- Department of Materials Engineering, Purdue University, 205 Gates Road, West Lafayette, Indiana 47906, United States.,Department of Mechanical Engineering, Purdue University, 205 Gates Road, West Lafayette, Indiana 47906, United States.,Purdue Energetics Research Center, Purdue University, 205 Gates Road, West Lafayette, Indiana 47906, United States
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25
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Zeng H, Fang X, Yang Z, Zhu C, Jiang H. Regioselective Synthesis of 5-Trifluoromethylpyrazoles by [3 + 2] Cycloaddition of Nitrile Imines and 2-Bromo-3,3,3-trifluoropropene. J Org Chem 2021; 86:2810-2819. [PMID: 33423498 DOI: 10.1021/acs.joc.0c02765] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A general and practical method for the synthesis of 5-trifluoromethylpyrazoles is reported that occurs by the coupling of hydrazonyl chlorides with environmentally friendly and large-tonnage industrial feedstock 2-bromo-3,3,3-trifluoropropene (BTP). This exclusively regioselective [3 + 2] cycloaddition of nitrile imines and with BTP is catalyst-free and operationally simple and features mild conditions, high yields, gram-scalable, a broad substrate scope, and valuable functional group tolerance. Significantly, our method has been applied for the synthesis of the key intermediate of an active agonist of sphingosine 1-phosphate receptor.
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Affiliation(s)
- Hao Zeng
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiaojie Fang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Zhiyi Yang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Chuanle Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China.,National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huaian 223003, People's Republic of China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
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26
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Popova AV, Kanaa A, Vavilova VS, Mironova MA, Slepukhin PA, Benassi E, Belskaya NP. Design, synthesis, and photophysics of bi- and tricyclic fused pyrazolines. NEW J CHEM 2021. [DOI: 10.1039/d0nj06287a] [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
A three series of bi-cyclic and tri-cyclic functionalised pyrazoline fluorophores with high quantum yields and positive solvato(fluoro)chromism were designed and synthesised by improved method.
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Affiliation(s)
| | - Ali Kanaa
- Ural Federal University
- Yekaterinburg 620002
- Russian Federation
| | | | | | - Pavel A. Slepukhin
- Ural Federal University
- Yekaterinburg 620002
- Russian Federation
- Postovsky Institute of Organic Synthesis
- Ural Branch of Russian Academy of Science
| | | | - Nataliya P. Belskaya
- Ural Federal University
- Yekaterinburg 620002
- Russian Federation
- Postovsky Institute of Organic Synthesis
- Ural Branch of Russian Academy of Science
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27
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Sharma P, Ranga Prabhath MR, Wong D, Ampem-Lassen MA, Bhat SV, Williams L, Carvalho TG. Synthesis of Biologically Active Heterospirocycles through Iterative 1,3-Dipolar Cycloaddition Pathways. J Org Chem 2021; 86:1223-1230. [PMID: 33316159 DOI: 10.1021/acs.joc.0c02424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We demonstrate the novel spiroannulation of exo-imines with 1,3-dipoles, for the first time, leading to 3D spirocycles with a secondary amine (NH) in the spiro-ring. The synthetic method described herein allows access to these previously unexplored heterospirocyclic cores that have application in the discovery of functional molecules for medicinal and materials science. This was demonstrated by discovering an unprecedented class of heterospirocycles with antimalarial activity against the human protozoan P. falciparum.
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Affiliation(s)
- Pallavi Sharma
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia.,School of Chemistry, Joseph Bank Laboratory, University of Lincoln, Lincoln LN6 7TS, United Kingdom
| | - M R Ranga Prabhath
- School of Chemistry, Joseph Bank Laboratory, University of Lincoln, Lincoln LN6 7TS, United Kingdom
| | - Derek Wong
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Maame Adjoa Ampem-Lassen
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Shreesha V Bhat
- School of Chemistry, Joseph Bank Laboratory, University of Lincoln, Lincoln LN6 7TS, United Kingdom
| | - Luke Williams
- School of Chemistry, Joseph Bank Laboratory, University of Lincoln, Lincoln LN6 7TS, United Kingdom
| | - Teresa G Carvalho
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Melbourne, Victoria 3086, Australia
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28
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Tu L, Gao L, Wang X, Shi R, Ma R, Li J, Lan X, Zheng Y, Liu J. [3 + 2] Cycloaddition of Nitrile Imines with Enamides: An Approach to Functionalized Pyrazolines and Pyrazoles. J Org Chem 2020; 86:559-573. [PMID: 33301335 DOI: 10.1021/acs.joc.0c02244] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient [3 + 2] cycloaddition of in situ generated nitrile imines with enamides has been established. A wide range of functionalized pyrazoline derivatives (53 examples) were obtained in moderate to good yields (up to 96%) under very mild conditions. This protocol features broad substrate scope, good functional group tolerance, and operational simplicity. Practical transformation of the products into useful pyrazoles via a one-pot process and the scalability of this protocol highlight the utility of this synthetic methodology.
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Affiliation(s)
- Liang Tu
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Limei Gao
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Xiaomeng Wang
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Ruijie Shi
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Rupei Ma
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Junfei Li
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Xiaoshuang Lan
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Yongsheng Zheng
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Jikai Liu
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
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29
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Cascade 1,3-dipolar Cycloaddition/SO2 extrusion approach for the rapid synthesis of tetraaryl-substituted pyrazoles with Aggregation Induced Emission characteristics. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131568] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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30
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Alizadeh A, Farajpour B, Amir Ashjaee Asalemi K, Taghipour S. Diastereoselective Synthesis of Coumarin‐Based Fused Heterocycles via Intramolecular Diels‐Alder and 1,3‐Dipolar Cycloaddition Reactions. ChemistrySelect 2020. [DOI: 10.1002/slct.202002747] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Abdolali Alizadeh
- Department of ChemistryTarbiat Modares University P.O. Box 14115–175 Tehran Iran
| | - Behnaz Farajpour
- Department of ChemistryTarbiat Modares University P.O. Box 14115–175 Tehran Iran
| | | | - Sajad Taghipour
- Department of ChemistryTarbiat Modares University P.O. Box 14115–175 Tehran Iran
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31
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Su Y, Ma C, Zhao Y, Yang C, Feng Y, Wang KH, Huang D, Huo C, Hu Y. Regioselective synthesis of spiro naphthofuranone-pyrazoline via a [3+2] cycloaddition of benzoaurones with nitrile imines. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131355] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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32
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Braga LS, Leal DHS, Kuca K, Ramalho TC. Perspectives on the Role of the Frontier Effective-for-Reaction Molecular Orbital (FERMO) in the Study of Chemical Reactivity: An Updated Review. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824666200204121044] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Molecular orbitals are critical in the rationalization of several chemical reactions.
Thus, the frontier molecular orbital theory, proposed by Fukui's group, postulated
the importance of the Highest Occupied Molecular Orbital (HOMO) and the Lowest Unoccupied
Molecular Orbital (LUMO) for chemical reactions. It should be kept in mind,
however, that there are limitations of this theory and new perspectives about the chemical
reactivity have recently been arisen based on composition and location of other frontier
molecular orbitals. In this review, we have reported the development and the most recent
applications of the Frontier Effective-for-Reaction Molecular Orbital (FERMO) concept,
which describes the breaking and formation of new chemical bonds and can in turn, provide
important clues that modulate chemical reactivity of atoms and molecules.
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Affiliation(s)
- Letícia S. Braga
- Department of Chemistry, Federal University of Lavras, Lavras, Brazil
| | - Daniel H. S. Leal
- Institute of Physics and Chemistry, Federal University of Itajuba, Itajuba, Brazil
| | - Kamil Kuca
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic
| | - Teodorico C. Ramalho
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic
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33
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Synthesis of thia- and thioxo-tetraazaspiro[4.4]nonenones from nitrile imines and arylidenethiohydantoins. Mol Divers 2020; 25:777-785. [PMID: 32100244 DOI: 10.1007/s11030-020-10056-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 02/17/2020] [Indexed: 10/24/2022]
Abstract
5-Arylidene-1-methyl-2-thiohydantoins undergo [3+2]-cycloaddition reaction with nitrile imines, generated in situ from hydrazonyl chlorides, at C=C and C=S dipolarophiles in the thiohydantoin moiety to afford thioxo-tetraazaspiro[4.4]nonenones and thia-tetraazaspiro[4.4]nonenones in moderate to good yields. The stereochemistry of these spiroheterocycles has been confirmed by X-ray diffraction studies.
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Abstract
The 1,3-dipolar cycloaddition reaction is a powerful and versatile strategy for
the synthesis of carbocyclic and heterocyclic five-membered rings. Herein, the most recent
developments on the [3+2] cycloaddition reactions using allenes acting either as dipolarophiles
or 1,3-dipole precursors, are highlighted. The recent contributions on the
phosphine- and transition metal-catalyzed [3+2] annulations involving allenes as substrates
are also covered, with the exception of those in which the formation of a 1,3-dipole
(or synthetic equivalent) is not invoked.
This review summarizes the most relevant research in which allenes are used as building
blocks for the construction of structurally diverse five-membered rings via [3+2] annulation
reactions.
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Affiliation(s)
- Ana L. Cardoso
- CQC and Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Maria I.L. Soares
- CQC and Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
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35
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Heimgartner H, Jasiński M, Utecht-Jarzyńska G, Świątek K, Mlostoń G. Novel Trifluoromethylated Spiro-1,3,4-thiadiazoles via [3+2]-Cycloadditions of 2,3-Diphenylcyclopropenethione with Selected in situ-Generated Nitrile Imines Derived from Trifluoroacetonitrile. HETEROCYCLES 2020. [DOI: 10.3987/com-19-s(f)20] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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36
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A computational study on the [3+2] cycloaddition of para-quinone methides with nitrile imines: a two-stage one-step mechanism. MONATSHEFTE FUR CHEMIE 2019. [DOI: 10.1007/s00706-019-02531-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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37
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Domingo LR, Ghodsi F, Ríos-Gutiérrez M. A Molecular Electron Density Theory Study of the Synthesis of Spirobipyrazolines through the Domino Reaction of Nitrilimines with Allenoates. Molecules 2019; 24:molecules24224159. [PMID: 31744134 PMCID: PMC6891705 DOI: 10.3390/molecules24224159] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 11/12/2019] [Accepted: 11/13/2019] [Indexed: 11/16/2022] Open
Abstract
The reaction of diphenyl nitrilimine (NI) with methyl 1-methyl-allenoate yielding a spirobipyrazoline has been studied within molecular electron density theory (MEDT) at the MPWB1K/6-311G(d) computational level in dichloromethane. This reaction is a domino process that comprises two consecutive 32CA reactions with the formation of a pyrazoline intermediate. Analysis of the relative Gibbs free energies indicates that both 32CA reactions are highly regioselective, the first one being also completely chemoselective, in agreement with the experimental outcomes. The geometries of the TSs indicate that they are associated to asynchronous bond formation processes in which the shorter distance involves the C1 carbon of diphenyl NI. Despite the zwitterionic structure of diphenyl NI, the appearance of a pseudoradical structure at the beginning of the reaction path, with a very low energy cost, suggests that the 32CA reaction between diphenyl NI, a strong nucleophile, and the allenoate, a moderate electrophile, should be mechanistically considered on the borderline between pmr-type and cb-type 32CA reactions, somewhat closer to the latter.
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Affiliation(s)
- Luis R. Domingo
- Department of Organic Chemistry, University of Valencia, Dr Moliner 50, 46100 Burjassot, Valencia, Spain;
- Correspondence:
| | - Fatemeh Ghodsi
- Department of Chemistry, University of Sistan and Baluchestan, Zahedan 98135-674, Iran;
| | - Mar Ríos-Gutiérrez
- Department of Organic Chemistry, University of Valencia, Dr Moliner 50, 46100 Burjassot, Valencia, Spain;
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8, Canada
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38
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Pakravan N, Shayani-Jam H, Beiginejad H, Tavafi H, Paziresh S. A green method for the synthesis of novel spiro compounds: Enhancement of antibacterial properties of caffeic acid through electrooxidation in the presence of barbituric acid derivatives. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.113286] [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]
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39
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A synthesis of N-(1H-pyrazol-5-yl)-1,3,4-thiadiazol-2(3H)-imines from nitrile imines and Erlenmeyer thioazlactones. Mol Divers 2019; 24:727-735. [PMID: 31350636 DOI: 10.1007/s11030-019-09981-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 07/17/2019] [Indexed: 12/23/2022]
Abstract
Erlenmeyer thioazlactones are reacted with hydrazonoyl chlorides in the presence of Et3N to afford functionalized N-(1H-pyrazol-5-yl)-1,3,4-thiadiazol-2(3H)-imines in excellent yields. This strategy is based on a domino double 1,3-dipolar cycloaddition reaction of nitrile imines to Erlenmeyer thioazlactones, followed by the elimination of carbon monoxide and phenylmethanthiol from the initially formed cycloadducts. This method provides fast access to a variety of structurally diverse N-(1H-pyrazol-5-yl)-1,3,4-thiadiazol-2(3H)-imines. The structure of a typical product was established by X-ray crystallography.
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40
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Gutti G, Kumar D, Paliwal P, Ganeshpurkar A, Lahre K, Kumar A, Krishnamurthy S, Singh SK. Development of pyrazole and spiropyrazoline analogs as multifunctional agents for treatment of Alzheimer's disease. Bioorg Chem 2019; 90:103080. [PMID: 31271946 DOI: 10.1016/j.bioorg.2019.103080] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 05/11/2019] [Accepted: 06/18/2019] [Indexed: 12/31/2022]
Abstract
Cholinergic hypothesis of Alzheimer's disease has been advocated as an essential tool in the last couple of decades for the drug development. Here in, we report de novo fragment growing strategy for the design of novel 3,5-diarylpyrazoles and hit optimization of spiropyrazoline derivatives as acetyl cholinesterase inhibitors. Both type of scaffolds numbering forty compounds were synthesized and evaluated for their potencies against AChE, BuChE and PAMPA. Introduction of lipophilic cyclohexane ring in 3,5-diarylpyrazole analogs led to spiropyrazoline derivatives, which facilitated and improved the potencies. Compound 44 (AChE = 1.937 ± 0.066 µM; BuChE = 1.166 ± 0.088 µM; hAChE = 1.758 ± 0.095 µM; Pe = 9.491 ± 0.34 × 10-6 cm s1) showed positive results, which on further optimization led to the development of compound 67 (AChE = 0.464 ± 0.166 µM; BuChE = 0.754 ± 0.121 µM; hAChE = 0.472 ± 0.042 µM; Pe = 13.92 ± 0.022 × 10-6 cm s1). Compounds 44 and 67 produced significant displacement of propidium iodide from the peripheral anionic site (PAS) of AChE. They were found to be safer to MC65 cells and decreased metal induced Aβ1-42 aggregation. Further, in-vivo behavioral studies, on scopolamine induced amnesia model, the compounds resulted in better percentage spontaneous alternation scores and were safe, had no influence on locomotion in tested animal groups at dose of 3 mg/kg. Early pharmacokinetic assessment of optimized hit molecules was supportive for further drug development.
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Affiliation(s)
- Gopichand Gutti
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Devendra Kumar
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Pankaj Paliwal
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Ankit Ganeshpurkar
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Khemraj Lahre
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Ashok Kumar
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Sairam Krishnamurthy
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Sushil Kumar Singh
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India.
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41
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Su Y, Zhao Y, Chang B, Zhao X, Zhang R, Liu X, Huang D, Wang KH, Huo C, Hu Y. [3 + 2] Cycloaddition of para-Quinone Methides with Nitrile Imines: Approach to Spiro-pyrazoline-cyclohexadienones. J Org Chem 2019; 84:6719-6728. [PMID: 31021088 DOI: 10.1021/acs.joc.9b00434] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
[3 + 2] cycloaddition of para-quinone methides with nitrile imines under mild conditions has been achieved. The corresponding spiro-pyrazoline-cyclohexadienone products were constructed in good to excellent yields (up to 97% yield) with high regioselectivity. This straightforward protocol exhibits good functional group tolerance and scalability and provides the spiro-pyrazoline-cyclohexadienones.
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Affiliation(s)
- Yingpeng Su
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Yanan Zhao
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Bingbing Chang
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Xiaolong Zhao
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Rong Zhang
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Xuan Liu
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Danfeng Huang
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Ke-Hu Wang
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Congde Huo
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Yulai Hu
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
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42
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Shang X, Liu K, Zhang Z, Xu X, Li P, Li W. Direct access to spirobiisoxazoline via the double 1,3-dipolar cycloaddition of nitrile oxide with allenoate. Org Biomol Chem 2019; 16:895-898. [PMID: 29345711 DOI: 10.1039/c7ob03040a] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The double [3 + 2]-cycloadditions between nitrile oxides and allenoates have been achieved. In the presence of DABCO combined with Et3N, 2-substituted buta-2,3-dienoates reacted with oxime chlorides to afford spirobiisoxazolines in 55-90% yields via the double 1,3-dipolar cycloaddition. Notably, the construction of double isoxazoline moieties and two chiral centers including a spiro carbon center was achieved.
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Affiliation(s)
- Xinye Shang
- Department of Medicinal Chemistry, School of Pharmacy, Qingdao University, Qingdao, Shandong 266021, China.
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43
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Swapnaja KJM, Yennam S, Chavali M. Design and synthesis of spirobiisoxazoline dibenzoquinone derivatives via [3 + 2] double 1,3-dipolar cycloaddition reaction. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2018.12.067] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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44
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Sun W, Jiang F, Liu H, Gao X, Jia H, Zhang C, Guo H. Double [3 + 2] cycloaddition of nitrile oxides with allenoates: Synthesis of spirobidihydroisoxazoles. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.04.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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45
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Wu XY, Gao YN, Shi M. Phosphine-Catalyzed [3+2] Annulation of N
-2,2,2-Trifluoroethylisatin Ketimines with γ-Substituted Allenoates: Synthesis of Spiro[indoline-3,2′-pyrrole]. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801794] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xiao-Yun Wu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry & Molecular Engineering; East China University of Science and Technology; Meilong Road No.130 200237 Shanghai China
| | - Yu-Ning Gao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry & Molecular Engineering; East China University of Science and Technology; Meilong Road No.130 200237 Shanghai China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry & Molecular Engineering; East China University of Science and Technology; Meilong Road No.130 200237 Shanghai China
- State Key Laboratory and Institute of Elemento-Organic Chemistry; School of Chemistry & Molecular Engineering; Nankai University; 300071 Tianjin P.R. China
- State Key Laboratory of Organometallic Chemistry; Center for Excellence in Molecular Synthesis; University of Chinese Academy of Sciences; 345 Lingling Road 200032 Shanghai China
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46
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Gupta E, Zaheer MK, Kant R, Mohanan K. Additive-free regio- and diastereoselective construction of fully-substituted isoxazolidines employing diazo compounds. Org Chem Front 2019. [DOI: 10.1039/c8qo01421c] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
An efficient additive-free three-component access to densely functionalized isoxazolidines using diazo compounds, nitrosoarene, and allenic esters has been uncovered.
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Affiliation(s)
- Ekta Gupta
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Mohd Khalid Zaheer
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Ruchir Kant
- Molecular and Structural Biology Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Kishor Mohanan
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
- Academy of Scientific and Innovative Research
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47
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Zhu JN, Yang ZH, Qi M, Zhao SY. DABCO-Catalyzed Double Cascade Cycloaddition of Maleimides with Bisarylhydrazones: Access to Fused Pyrazolo[5,1-c
][1,2,4]triazole Derivatives. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801260] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jia-Nan Zhu
- Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology; Donghua University; Shanghai 201620 People's Republic of China
| | - Zhen-Hua Yang
- Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology; Donghua University; Shanghai 201620 People's Republic of China
| | - Ming Qi
- Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology; Donghua University; Shanghai 201620 People's Republic of China
| | - Sheng-Yin Zhao
- Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology; Donghua University; Shanghai 201620 People's Republic of China
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48
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Diastereodivergent Synthesis of Pyrazoline Derivatives through [3 + 2] Cycloaddition of Baylis–Hillman Adducts and Nitrilimines. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3344] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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49
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DFT study of double 1,3-dipolar cycloaddition of nitrilimines with allenoates. MONATSHEFTE FUR CHEMIE 2018. [DOI: 10.1007/s00706-018-2311-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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50
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Zhang X, Qiu W, Ma X, Evans J, Kaur M, Jasinski JP, Zhang W. One-Pot Double [3 + 2] Cycloadditions for Diastereoselective Synthesis of Pyrrolidine-Based Polycyclic Systems. J Org Chem 2018; 83:13536-13542. [DOI: 10.1021/acs.joc.8b02046] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Xiaofeng Zhang
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, United States
| | - Weiqi Qiu
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, United States
| | - Xiaoming Ma
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, United States
- School of Pharmaceutical Engineering and Life Science, Changzhou University, Changzhou, Jiangsu Province 213164, P. R. China
| | - Jason Evans
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, United States
| | - Manpreet Kaur
- Department of Chemistry, Keene State College, 229 Main Street, Keene, New Hampshire 03435, United States
| | - Jerry P. Jasinski
- Department of Chemistry, Keene State College, 229 Main Street, Keene, New Hampshire 03435, United States
| | - Wei Zhang
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, United States
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