1
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Cui L, Yang X, Yuan C, Zhou Z. Application of β-Keto Acylpyrazoles as 2C Synthons in Asymmetric Cyclizations of ortho-Hydroxychalcones: Stereoselective Construction of trans-3,4-Dihydrocoumarins. J Org Chem 2024; 89:17950-17959. [PMID: 39655832 DOI: 10.1021/acs.joc.4c01327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2024]
Abstract
An asymmetric tandem esterification/Michael addition reaction of β-keto acylpyrazoles with o-hydroxychalcones has been established under the catalysis of a bifunctional squaramide-tertiary amine. A wide variety of biorelevant 3,4-dihydrocoumarin derivatives were generally obtained in high yields (up to 93%) with excellent diastereo- and enantioselectivities (>19:1 dr, up to 93% ee) under mild reaction conditions. This reaction represents the successful application of β-keto acylpyrazoles as 2C building blocks in catalytic asymmetric cyclizations.
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Affiliation(s)
- Liying Cui
- School of Chemistry and Chemical Engineering, North University of China, Taiyuan 030051, P.R. China
| | - Xiaofeng Yang
- School of Chemistry and Chemical Engineering, North University of China, Taiyuan 030051, P.R. China
| | - Changchun Yuan
- School of Chemistry and Chemical Engineering, North University of China, Taiyuan 030051, P.R. China
| | - Zhenghong Zhou
- Institute and State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, P. R. China
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2
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Yin P, Zhou Z, Shi L, Xiang C, Ye L, Han M, Shi Z, Zhao Z, Li X. Stereocontrolled Construction of Spirooxindole-Containing 5,6,7,8-Tetrahydropyrrolo[1,2- a]pyridine via Michael/Friedel-Crafts Domino Reaction Promoted by Secondary Amine-Squaramide. Org Lett 2024; 26:2152-2157. [PMID: 38456394 DOI: 10.1021/acs.orglett.4c00073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
An asymmetric Michael/Friedel-Crafts cascade reaction with Morita-Baylis-Hillman (MBH) nitroallylic esters and 3-pyrrolyloxindoles has been developed for the stereoselective construction of spirooxindole-containing tetrahydroindolizines. A range of tetracyclic scaffolds possessing three consecutive chiral centers, including an all-carbon quaternary stereocenter, were generated in 53-85% isolated yields with high diastereoselectivities and enantiopurities (≥3:1 dr, 50-98% ee). A newly synthesized bifunctional secondary amine/squaramide organocatalyst was demonstrated to exhibit better stereochemical control than their tertiary analogues.
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Affiliation(s)
- Pengxuan Yin
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Zijie Zhou
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Lingsheng Shi
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Chengzhi Xiang
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Ling Ye
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Min Han
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Zhichuan Shi
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Zhigang Zhao
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Xuefeng Li
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
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3
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Pal K, Srinivasu V, Biswas S, Sureshkumar D. Visible light-induced organo-photocatalyzed route to synthesize substituted pyrazoles. Org Biomol Chem 2024; 22:2384-2388. [PMID: 38441915 DOI: 10.1039/d4ob00248b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
The synthesis of tetra-substituted pyrazoles holds significant synthetic value and has been accomplished through an organo-photocatalyzed decarboxylative intramolecular cyclization using readily available 1,2-diaza-1,3-dienes and α-ketoacids. This method allows for the systematic synthesis of substituted pyrazole derivatives. Notably, this approach is characterized by its metal-free and oxidant-free nature, offering distinct advantages such as short reaction times and exceptionally mild reaction conditions. The developed methodology enables the efficient construction of tetra-substituted pyrazoles, expanding the available chemical space for exploration and opening up potential applications in various scientific fields.
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Affiliation(s)
- Koustav Pal
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India.
| | - Vinjamuri Srinivasu
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India.
| | - Sourabh Biswas
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India.
| | - Devarajulu Sureshkumar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India.
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4
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Song X, Qin W, Wang X, Luo G, Ni Q. Bifunctional Squaramide-Catalyzed Asymmetric Cascade Reaction of Benzothiazoles with 2-Nitroallylic Acetates or Nitroenynes. Org Lett 2023; 25:9164-9169. [PMID: 38097282 DOI: 10.1021/acs.orglett.3c03692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
We describe here an organocatalytic asymmetric cascade formal [3 + 3] cycloaddition of benzothiazoles with 2-nitroallylic acetates and nitroenynes. This dearomative methodology provided a facile and efficient strategy for the construction of a broad range of valuable benzothiazolopyridines bearing two adjacent stereogenic centers in moderate to good yields with good to excellent stereocontrol.
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Affiliation(s)
- Xiaoxiao Song
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, P. R. China
| | - Wei Qin
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, P. R. China
| | - Xuyang Wang
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, P. R. China
| | - Gen Luo
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
| | - Qijian Ni
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, P. R. China
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5
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Sivanandan ST, Nair DK, Namboothiri INN. Recent advances in the synthetic applications of Morita-Baylis-Hillman and Rauhut-Currier adducts of nitroalkenes. Org Biomol Chem 2023; 21:6243-6262. [PMID: 37486601 DOI: 10.1039/d3ob00853c] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
The Morita-Baylis-Hillman (MBH) and Rauhut-Currier (RC) adducts of nitroalkenes are important synthetic intermediates in organic synthesis. This review discusses the applications of different MBH and RC adducts of nitroalkenes such as MBH alcohols, acetates, bromides and hydrazinonitroalkenes as well as ketoalkylnitroalkenes in the synthesis of complex molecules including carbocycles and heterocycles. It also covers the mechanistic aspects, including the key intermediates and the reaction pathways. Early reports on MBH and RC reactions of nitroalkenes and applications of the products were covered in previous reviews. The present review covers the reports that appeared in the timeline of 2015-2023.
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Affiliation(s)
- Sudheesh T Sivanandan
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400 076, India.
- Department of Chemistry, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Divya K Nair
- Department of Chemistry, Mercy College, Palakkad, Kerala 678 006, India
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6
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Bania N, Barman D, Pan SC. Organocatalytic Asymmetric Inverse-Electron-Demand Diels-Alder Reaction between Alkylidene Pyrazolones and Allyl Ketones: Access to Tetrahydropyrano[2,3- c]pyrazoles. J Org Chem 2023. [PMID: 37262311 DOI: 10.1021/acs.joc.3c01063] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Herein we report a catalytic asymmetric inverse-electron-demand Diels-Alder reaction between alkylidene pyrazolones and allyl ketones. Allyl ketone gets activated by a bifunctional thiourea catalyst and acts as a dienolate in this reaction. The trisubstituted tetrahydropyrano[2,3-c]pyrazoles were obtained in moderate to good yields with high diastereo- and enantioselectivities. Few applications, including a decarbonylation reaction, have been demonstrated.
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Affiliation(s)
- Nimisha Bania
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Dipankar Barman
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Subhas Chandra Pan
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
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7
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Reddy YP, Srinivasadesikan V, Balamurugan R, Lin MC, Anwar S. Synthesis of tetrahydrochromenes and dihydronaphthofurans via a cascade process of [3 + 3] and [3 + 2] annulation reactions: mechanistic insight for 6- endo-trig and 5- exo-trig cyclisation. RSC Adv 2023; 13:5796-5803. [PMID: 36816068 PMCID: PMC9932637 DOI: 10.1039/d2ra08163f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 02/03/2023] [Indexed: 02/18/2023] Open
Abstract
Substituted tetrahydrochromenes and dihydronaphthofurans are easily accessible by the treatment of β-tetralone with trans-β-nitro styrene derived Morita-Baylis-Hillman (MBH) acetates through a formal [3 + 3]/[3 + 2] annulation. The reaction proceeds through a cascade Michael/oxa-Michael pathway with moderate to good yields. A DFT study was carried out to account for the formation of the corresponding six and five-membered heterocycles via 6-endo-trig and 5-exo-trig cyclization.
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Affiliation(s)
- Yeruva Pavankumar Reddy
- Department of Chemistry, School of Applied Sciences and Humanities, Vignan's Foundation for Science Technology and Research-VFSTR (Deemed to be University) Vadlamudi-522213 Guntur Andhra Pradesh India https://www.vignan.ac.in/bshanwar.php +91-8632344700
| | - V. Srinivasadesikan
- Department of Chemistry, School of Applied Sciences and Humanities, Vignan's Foundation for Science Technology and Research-VFSTR (Deemed to be University)Vadlamudi-522213GunturAndhra PradeshIndiahttps://www.vignan.ac.in/bshanwar.php+91-8632344700
| | | | - M. C. Lin
- Department of Applied Chemistry, National Yang Ming Chiao Tung UniversityHsinchu 30010Taiwan
| | - Shaik Anwar
- Department of Chemistry, School of Applied Sciences and Humanities, Vignan's Foundation for Science Technology and Research-VFSTR (Deemed to be University) Vadlamudi-522213 Guntur Andhra Pradesh India https://www.vignan.ac.in/bshanwar.php +91-8632344700
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8
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Li MM, Huang H, Pu Y, Tian W, Deng Y, Lu J. A close look into the biological and synthetic aspects of fused pyrazole derivatives. Eur J Med Chem 2022; 243:114739. [PMID: 36126386 DOI: 10.1016/j.ejmech.2022.114739] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 08/29/2022] [Accepted: 08/31/2022] [Indexed: 11/16/2022]
Abstract
The fusion of pyrazole scaffold with other skeletons creates a class of attractive molecules, demonstrating significant biological and chemical potentiality in the development of medicinal chemistry. Over the past few decades, numerous biologically active molecules featuring fused pyrazole moieties have been excavated and synthesized, some of which represented by sildenafil have been marketed as drugs, and the biological importance together with chemical synthesis strategies of fused pyrazole compounds, including structural modification based on lead compounds, have been steadily progressing. In this review, we focused our attention on the biological importance of fused pyrazoles and highlighted recent progress in the synthesis of this framework over the past 10 years. What' s more, the limitations, challenges, and future prospects were proposed, wishing to provide references for the development of pyrazole fused frameworks in the field of medicinal chemistry. Contents.
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Affiliation(s)
- Mei-Mei Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
| | - Hui Huang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Yiru Pu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Wanrong Tian
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Yun Deng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
| | - Jun Lu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China; Institute for Advancing Translational Medicine in Bone & Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong SAR, 999077, China.
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9
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Yi MH, Jin HS, Wang RB, Zhao LM. Copper-Catalyzed Cascade Annulation of o-Hydroxyphenyl Propargylamines with Pyrazolin-5-ones to Access Pyrano[2,3- c]pyrazoles. J Org Chem 2022; 87:5795-5803. [PMID: 35442039 DOI: 10.1021/acs.joc.2c00122] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
An efficient copper-catalyzed cascade annulation of o-hydroxyphenyl propargylamines and pyrazolin-5-ones is described. This methodology leads to the rapid assembly of a series of valuable pyrano[2,3-c]pyrazoles with good yields across a wide range of substrates in a simple fashion. This novel reaction involves the formation of alkynyl ortho-quinone methides, a 1,4-conjugate addition, and a subsequent 6-endo cyclization process. The mechanistic elucidation is well supported by control experiment and literature precedents.
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Affiliation(s)
- Meng-Hao Yi
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China
| | - Hai-Shan Jin
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China
| | - Ru-Bing Wang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Li-Ming Zhao
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China.,State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
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10
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Huang W, Li G, He XH, Li HP, Zhao Q, Li DA, Zhu HP, Zhang YH, Zhan G. Design, synthesis, and biological evaluation of tetrahydro-αcarbolines as Akt1 inhibitors that inhibit colorectal cancer cells proliferation. ChemMedChem 2022; 17:e202200104. [PMID: 35355421 DOI: 10.1002/cmdc.202200104] [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: 02/24/2022] [Revised: 03/25/2022] [Indexed: 11/09/2022]
Abstract
A series of densely functionalized THαCs were designed and synthesized as Akt1 inhibitors. Organocatalytic [3+3] annulation between indolin-2-imines 1 and nitroallylic acetates 2 provided rapid access to this pharmacologically interesting framework. In vitro kinase inhibitory abilities and cytotoxicity assays revealed that compound 3af was the most potent Akt1 inhibitor, and mechanistic study indicated that compound 3af suppressed the proliferation of colorectal cancer cells via inducing apoptosis and autophagy. Molecular docking suggested that the indole fragment of 3af was inserted into the hydrophobic pocket of Akt1 protein, and the H-bond between 3af and residue Lys179 also contributed to the stable binding. This article provides an efficient strategy to design and synthesize biologically important compounds as novel Akt1 inhibitors.
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Affiliation(s)
- Wei Huang
- Chengdu University of Traditional Chinese Medicine, School of Pharmacy, 1166 Liu Tai Av., 610000, Chengdu, CHINA
| | - Guo Li
- Chengdu University of Traditional Chinese Medicine Wenjiang Campus: Chengdu University of Traditional Chinese Medicine, State Key Laboratory of Southwestern Chinese Medicine Resources, CHINA
| | - Xiang-Hong He
- Chengdu University of Traditional Chinese Medicine Wenjiang Campus: Chengdu University of Traditional Chinese Medicine, State Key Laboratory of Southwestern Chinese Medicine Resources, CHINA
| | - He-Ping Li
- Chengdu University of Traditional Chinese Medicine Wenjiang Campus: Chengdu University of Traditional Chinese Medicine, State Key Laboratory of Southwestern Chinese Medicine Resources, CHINA
| | - Qian Zhao
- Chengdu University of Traditional Chinese Medicine Wenjiang Campus: Chengdu University of Traditional Chinese Medicine, State Key Laboratory of Southwestern Chinese Medicine Resources, 610000, Chengdu, CHINA
| | - Dong-Ai Li
- Chengdu University of Traditional Chinese Medicine Wenjiang Campus: Chengdu University of Traditional Chinese Medicine, State Key Laboratory of Southwestern Chinese Medicine Resources, CHINA
| | - Hong-Ping Zhu
- Chengdu University of Traditional Chinese Medicine Wenjiang Campus: Chengdu University of Traditional Chinese Medicine, State Key Laboratory of Southwestern Chinese Medicine Resources, CHINA
| | - Yue-Hua Zhang
- Sichuan University, State Key Laboratory of Biotherapy and Department of Pharmacy, CHINA
| | - Gu Zhan
- Chengdu University of Traditional Chinese Medicine Wenjiang Campus: Chengdu University of Traditional Chinese Medicine, State Key Laboratory of Southwestern Chinese Medicine Resources, CHINA
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11
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Pareek A, Sivanandan ST, Bhagat S, Namboothiri IN. [3+2]-annulation of oxindolinyl-malononitriles with Morita–Baylis–Hillman acetates of nitroalkenes for the regio- and diastereoselective synthesis of spirocyclopentane-indolinones. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Sivanandan ST, Chauhan D, Namboothiri I. One‐pot regio‐ and diastereoselective synthesis of tetrahydro‐α‐carbolines via cascade reactions of iminoindolines with Morita‐Baylis‐Hillman bromides of nitroalkenes. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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13
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Biswas SK, Das D. One-pot Synthesis of Pyrano[2,3-c]pyrazole Derivatives via Multicomponent Reactions (MCRs) and their Applications in Medicinal Chemistry. MINI-REV ORG CHEM 2021. [DOI: 10.2174/1570193x19666211220141622] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Many pyrano[2,3-c]pyrazole derivatives display diverse biological activities and some of them are known as anticancer, analgesic, anticonvulsant, antimicrobial, anti-inflammatory, and anti-malarial agents. In recent years, easy convergent, multicomponent reactions (MCRs) have been adopted to make highly functionalizedpyrano[2,3-c]pyrazole derivatives of biological interest. The synthesis of 1,4-dihydropyrano[2,3-c]pyrazole (1,4-DHPP, 2), 2,4-dihydropyrano[2,3-c]pyrazole (2,4-DHPP, 3), 4-hydroxypyrano[2,3-c]pyrazole (4-HPP, 4) derivatives, 1,4,4-substitied pyranopyrazole (SPP, 5) were reported via two-, three-, four- and five-component reactions (MCRs).
Methods:
This review article compiles the preparation of pyrano[2,3-c]pyrazole derivatives, and it highlights the applications of various pyrano[2,3-c]pyrazole derivatives in medicinal chemistry.
Results:
Varieties of pyrano[2,3-c]pyrazole derivatives were achieved via “One-pot” multicomponent reactions (MCRs). Different reaction conditions in the presence of a catalyst or without catalysts were adapted to prepare the pyrano[2,3-c]pyrazole derivatives.
Conclusion:
Biologically active pyrano[2,3-c]pyrazole derivatives were prepared and used in drug discovery research.
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Affiliation(s)
- Swapan Kumar Biswas
- Department of Chemistry, Sree Chaitanya College, Habra, 24-Pgs(N), West Bengal 743268, India
| | - Debasis Das
- Department Discovery Chemistry Research, Arromax Pharmatech Co. Ltd.Sangtian Island Innovation Park, No. 1 Huayun Road, SIP, Suzhou 215123, China
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14
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Fang H, Sun J, Yan C. Convenient Construction of Spiro[pyrazole‐4,1′‐pyrido[2,1‐
a
]isoquinoline] and Spiro[pyrazole‐4,4′‐pyrido[1,2‐
a
]quinoline] via Three‐Component Reaction. ChemistrySelect 2021. [DOI: 10.1002/slct.202102255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hui‐Ling Fang
- School of Chemistry & Chemical Engineering Yangzhou University Yangzhou 225002 China
| | - Jing Sun
- School of Chemistry & Chemical Engineering Yangzhou University Yangzhou 225002 China
| | - Chao‐Guo Yan
- School of Chemistry & Chemical Engineering Yangzhou University Yangzhou 225002 China
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15
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Biswas A, Ghosh A, Shankhdhar R, Chatterjee I. Squaramide Catalyzed Asymmetric Synthesis of Five‐ and Six‐Membered Rings. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100181] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Anup Biswas
- Department of Chemistry Hooghly Women's College Hooghly West Bengal India
| | - Avisek Ghosh
- Department of Chemistry Indian Institute of Technology- Ropar India
| | - Rajat Shankhdhar
- Department of Chemistry Indian Institute of Technology- Ropar India
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16
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Xiao X, Shao B, Li J, Yang Z, Lu YJ, Ling F, Zhong W. Enantioselective synthesis of functionalized 1,4-dihydropyrazolo-[4',3':5,6]pyrano[2,3- b]quinolines through ferrocenyl-phosphine-catalyzed annulation of modified MBH carbonates and pyrazolones. Chem Commun (Camb) 2021; 57:4690-4693. [PMID: 33977995 DOI: 10.1039/d1cc00989c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An enantioselective synthesis of highly functionalized 1,4-dihydropyrazolo[4',3':5,6]pyrano[2,3-b]quinolines from modified MBH carbonates and pyrazolones via a chiral phosphine-mediated alkylation/annulation sequence has been realized. The chiral dihydropyrano[2,3-c]pyrazoles bearing bio-active condensed heterocycles were facilely formed in good chemical yields and with high to excellent enantioselectivity by utilizing low catalyst loading.
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Affiliation(s)
- Xiao Xiao
- Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China and College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Bingxuan Shao
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Jingyi Li
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Zehui Yang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Yin-Jie Lu
- Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Fei Ling
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Weihui Zhong
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
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17
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Bania N, Mondal B, Ghosh S, Pan SC. DMAP Catalyzed Domino Rauhut-Currier Cyclization Reaction between Alkylidene Pyrazolones and Nitro-olefins: Access to Tetrahydropyrano[2,3- c]pyrazoles. J Org Chem 2021; 86:4304-4312. [PMID: 33593067 DOI: 10.1021/acs.joc.0c02871] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein, we employ unsaturated pyrazolones in the Rauhut-Currier reaction for the first time. A domino Rauhut-Currier cyclization reaction has been developed between unsaturated pyrazolones and nitro-olefins. The trisubstituted tetrahydropyrano[2,3-c]pyrazoles were obtained in moderate to high yields with excellent diastereoselectivities. A few applications including a synthesis of disubstituted tetrahydropyrano[2,3-c]pyrazole have been demonstrated. A preliminary catalytic asymmetric version of this process was also studied with chiral DMAP catalysts.
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Affiliation(s)
- Nimisha Bania
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Buddhadeb Mondal
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Sounak Ghosh
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Subhas Chandra Pan
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
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18
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Kostenko AA, Bykova KA, Kucherenko AS, Komogortsev AN, Lichitsky BV, Zlotin SG. 2-Nitroallyl carbonate-based green bifunctional reagents for catalytic asymmetric annulation reactions. Org Biomol Chem 2021; 19:1780-1786. [PMID: 33543186 DOI: 10.1039/d0ob02283g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
2-Nitroallylic carbonates, a new class of "green" 1,3-bielectrophilic reagents for organic synthesis and catalysis, have been prepared. The bifunctional tertiary amine-catalyzed asymmetric [3 + 3] annulations of cyclic enols with these reagents occur much faster than corresponding reactions with 2-nitroallylic esters and produce no acidic by-products poisoning the catalyst. Furthermore, 2-nitroallylic carbonates enable highly enantioselective one-pot synthesis of a variety of fused dihydropyrane derivatives from available precursors bearing pharmacophoric fragments.
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Affiliation(s)
- Alexey A Kostenko
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, 119991, Moscow, Russian Federation.
| | - Kseniya A Bykova
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, 119991, Moscow, Russian Federation.
| | - Alexander S Kucherenko
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, 119991, Moscow, Russian Federation.
| | - Andrey N Komogortsev
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, 119991, Moscow, Russian Federation.
| | - Boris V Lichitsky
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, 119991, Moscow, Russian Federation.
| | - Sergei G Zlotin
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, 119991, Moscow, Russian Federation.
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19
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Yavari I, Sheykhahmadi J. TFA-mediated synthesis of functionalized pyrano[2,3-c]pyrazoles from pyrazol-3-ones, active carbonyl compounds and tert-BuOH. Mol Divers 2021; 26:879-890. [PMID: 33655465 DOI: 10.1007/s11030-021-10200-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Accepted: 02/12/2021] [Indexed: 11/26/2022]
Abstract
Functionalized pyrano[2,3-c]pyrazoles were synthesized from 2,4-dihydro-3H-pyrazol-3-ones, active carbonyl compounds and tert-BuOH in the presence of trifluoroacetic acid at 65 °C. These reactions are proceeded by acid catalyzed generation of isobutylene from tert-BuOH for LUMOdiene-controlled inverse [4 + 2] cycloaddition reaction with in situ-generated vinylidenepyrazolones.
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Affiliation(s)
- Issa Yavari
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran.
| | - Jamil Sheykhahmadi
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran.
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20
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Zhao M, Li F, Cheng Y, Wang Y, Zhou Z. Optically Active 3,4-Dihydrocoumarins via Organocatalyzed Asymmetric [4+2] Annulation of ortho-Hydroxyl Functionalized p-Quinone Methides with β-Keto Acylpyrazoles. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202105055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Kumar VS, Gudise VB, Settipalli PC, Reddy EK, Firoj Basha S, Reddy YP, Srinivasadesikan V, Lee S, Anwar S. Understanding the Mechanism of S
N
2′
vs
. S
N
2 in Cascade Reaction of β‐Naphthol and Nitrostyrene Derived MBH Acetates. ChemistrySelect 2020. [DOI: 10.1002/slct.201904618] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Vadiga Shanthi Kumar
- Division of ChemistryDepartment of Sciences and HumanitiesVignan's Foundation for Science Technology and Research-VFSTR ( Deemed to be University) Vadlamudi Guntur-Andhra Pradesh 522 213 India
| | - Veera Babu Gudise
- Division of ChemistryDepartment of Sciences and HumanitiesVignan's Foundation for Science Technology and Research-VFSTR ( Deemed to be University) Vadlamudi Guntur-Andhra Pradesh 522 213 India
| | - Poorna Chandrasekhar Settipalli
- Division of ChemistryDepartment of Sciences and HumanitiesVignan's Foundation for Science Technology and Research-VFSTR ( Deemed to be University) Vadlamudi Guntur-Andhra Pradesh 522 213 India
| | - Eeda Koti Reddy
- Division of ChemistryDepartment of Sciences and HumanitiesVignan's Foundation for Science Technology and Research-VFSTR ( Deemed to be University) Vadlamudi Guntur-Andhra Pradesh 522 213 India
| | - Shaik Firoj Basha
- Division of ChemistryDepartment of Sciences and HumanitiesVignan's Foundation for Science Technology and Research-VFSTR ( Deemed to be University) Vadlamudi Guntur-Andhra Pradesh 522 213 India
| | - Yeruva Pavankumar Reddy
- Division of ChemistryDepartment of Sciences and HumanitiesVignan's Foundation for Science Technology and Research-VFSTR ( Deemed to be University) Vadlamudi Guntur-Andhra Pradesh 522 213 India
| | - V. Srinivasadesikan
- Division of ChemistryDepartment of Sciences and HumanitiesVignan's Foundation for Science Technology and Research-VFSTR ( Deemed to be University) Vadlamudi Guntur-Andhra Pradesh 522 213 India
| | - Shyi‐Long Lee
- Department of Chemistry and BiochemistryNational Chung Cheng University Chia-Yi 621 Taiwan
| | - Shaik Anwar
- Division of ChemistryDepartment of Sciences and HumanitiesVignan's Foundation for Science Technology and Research-VFSTR ( Deemed to be University) Vadlamudi Guntur-Andhra Pradesh 522 213 India
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22
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Li J, Hu QL, Chen XP, Hou KQ, Chan AS, Xiong XF. Asymmetric synthesis of tetrahydropyran[3,2-c]quinolinones via an organocatalyzed formal [3 + 3] annulation of quinolinones and MBH 2-naphthoates of nitroolefin. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.08.040] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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23
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Basu P, Hazra C, Baiju TV, Namboothiri INN. Synthesis of tetrahydrothiopyrano[2,3-b]indoles via [3+3] annulation of nitroallylic acetates with indoline-2-thiones. NEW J CHEM 2020. [DOI: 10.1039/c9nj04754a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
[3+3] annulation of 1,3-binucleophilic indolin-2-thione with 1,3-bielectrophilic nitroallylic acetate via an SN2-reaction-6-endo-trig cyclization takes place with high regio- and stereoselectivity to afford tetrahydrothiopyranoindoles.
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Affiliation(s)
- Pallabita Basu
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400 076
- India
| | - Chiranjit Hazra
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400 076
- India
| | - Thekke V. Baiju
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400 076
- India
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24
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Bakthadoss M, Surendar M. Cascade annulation reaction (CAR): highly diastereoselective synthesis of pyranopyrazole scaffolds. RSC Adv 2020; 10:19003-19007. [PMID: 35518344 PMCID: PMC9053953 DOI: 10.1039/d0ra03400b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 05/11/2020] [Indexed: 12/26/2022] Open
Abstract
An unprecedented domino protocol for the novel synthesis of highly diverse and functionalized tetrahydro pyranopyrazole scaffolds using chalcone epoxide has been reported for the first time. This synthetic protocol generates three consecutive stereogenic centres in a highly diastereoselective manner with the formation of vicinal diol and a quaternary carbon centre. A wide range of substrates were utilized for the scope of this methodology and provided very good yields of pyranopyrazoles. The pyranopyrazoles were also transformed into densely functionalized tetrasubstituted olefins. An unprecedented domino protocol for the novel synthesis of highly diverse and functionalized tetrahydro pyranopyrazole scaffolds using chalcone epoxide has been reported.![]()
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Affiliation(s)
| | - Manickam Surendar
- Department of Chemistry
- Pondicherry University
- Pondicherry 605014
- India
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25
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Ji YL, He XH, Li G, Ai YY, Li HP, Peng C, Han B. Substrate-directed chemo- and regioselective synthesis of polyfunctionalized trifluoromethylarenes via organocatalytic benzannulation. Org Chem Front 2020. [DOI: 10.1039/c9qo01436e] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Highly chemo- and regioselective substrate-directed benzannulation of trisubstituted CF3-alkenes and 2-benzylidenemalononitriles or 2-nitroallylic acetates has been achieved via Michael-initiated [4 + 2] or Rauhut–Currier-initiated [3 + 3] annulation.
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Affiliation(s)
- Yan-Ling Ji
- Hospital of Chengdu University of Traditional Chinese Medicine
- State Key Laboratory of Southwestern Chinese Medicine Resources
- School of Pharmacy
- Chengdu University of Traditional Chinese Medicine
- Chengdu
| | - Xiang-Hong He
- Hospital of Chengdu University of Traditional Chinese Medicine
- State Key Laboratory of Southwestern Chinese Medicine Resources
- School of Pharmacy
- Chengdu University of Traditional Chinese Medicine
- Chengdu
| | - Guo Li
- Hospital of Chengdu University of Traditional Chinese Medicine
- State Key Laboratory of Southwestern Chinese Medicine Resources
- School of Pharmacy
- Chengdu University of Traditional Chinese Medicine
- Chengdu
| | - Yue-Yan Ai
- Hospital of Chengdu University of Traditional Chinese Medicine
- State Key Laboratory of Southwestern Chinese Medicine Resources
- School of Pharmacy
- Chengdu University of Traditional Chinese Medicine
- Chengdu
| | - He-Ping Li
- Hospital of Chengdu University of Traditional Chinese Medicine
- State Key Laboratory of Southwestern Chinese Medicine Resources
- School of Pharmacy
- Chengdu University of Traditional Chinese Medicine
- Chengdu
| | - Cheng Peng
- Hospital of Chengdu University of Traditional Chinese Medicine
- State Key Laboratory of Southwestern Chinese Medicine Resources
- School of Pharmacy
- Chengdu University of Traditional Chinese Medicine
- Chengdu
| | - Bo Han
- Hospital of Chengdu University of Traditional Chinese Medicine
- State Key Laboratory of Southwestern Chinese Medicine Resources
- School of Pharmacy
- Chengdu University of Traditional Chinese Medicine
- Chengdu
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26
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Tan CY, Lu H, Zhang JL, Liu JY, Xu PF. Asymmetric Organocatalytic [4 + 1] Annulations Involving a Polarity Reversal Process: A Tandem Catalytic Approach to Highly Functionalized Spiropyrazolone Derivatives. J Org Chem 2019; 85:594-602. [DOI: 10.1021/acs.joc.9b02684] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Chang-Yin Tan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Hong Lu
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry of the Ministry of Education, National Demonstration Center for Experimental Chemistry Education (Northwest University), College of Chemistry & Materials Science, Northwest University, Xi’an 710127, China
| | - Jia-Lu Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jin-Yu Liu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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27
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Sharma A, Sharma V, Chimni SS. Organocatalytic enantioselective conjugate addition of pyrazolin-5-ones to arylomethylidene malonates. Org Biomol Chem 2019; 17:9514-9523. [PMID: 31657819 DOI: 10.1039/c9ob01700c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient asymmetric organocatalytic conjugate addition reaction of pyrazolin-5-ones with arylomethylidene malonates has been successfully developed by employing bifunctional Cinchona derived thiourea organocatalysts. The protocol provides straightforward access to pyrazole substituted scaffolds in good yields with high stereocontrol.
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Affiliation(s)
- Arun Sharma
- Department of Chemistry, Guru Nanak Dev University, Amritsar-143005, Punjab, India
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28
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Luo W, Shao B, Li J, Song D, Yi X, Ling F, Zhong W. Divergent synthesis of spirocyclopentene-pyrazolones and pyrano[2,3-c]-pyrazoles via Lewis base controlled annulation reactions. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.151206] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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29
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Synthesis of substituted dihydro-1H-pyrazoles and 1H-pyrazoles via formal [4+1] annulation of α-arylhydrazonoketones and dimethyl sulfonium methylides. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.01.061] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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30
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Mutyala R, Reddy VR, Donthi R, Kallaganti VR, Chandra R. Direct catalytic asymmetric method for the synthesis of tetrahydropyranopyrazoles through allene zwitterion chemistry. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.01.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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Cheng C, Sun X, Wu Z, Liu Q, Xiong L, Miao Z. Lewis base catalyzed regioselective cyclization of allene ketones or α-methyl allene ketones with unsaturated pyrazolones. Org Biomol Chem 2019; 17:3232-3238. [PMID: 30840009 DOI: 10.1039/c9ob00179d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A nitrogen-containing Lewis base catalyzed highly regioselective [4 + 2] cycloaddition of allene ketones or α-methyl allene ketones with unsaturated pyrazolones has been disclosed to give the corresponding tetrahydropyrano [2,3-c] pyrazoles in moderate to good yields under mild conditions. High regioselectivity, 100% atom-economy, broad substrate scope and good functional group tolerance are attractive features of this process and make it a practical and versatile transformation.
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Affiliation(s)
- Cheng Cheng
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Weijin Road 94, Tianjin 300071, China.
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32
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Cui L, Wang Y, Fan Z, Li Z, Zhou Z. Organocatalytic Enantioselective α‐Amination of Thiazol‐4‐one‐5‐carboxylates with Azodicarboxylates. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800507] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Liying Cui
- Insitute and State Key Laboratory of Elemento-Organic Chemistry, College of ChemistryNankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300071 P. R. China
| | - Youming Wang
- Insitute and State Key Laboratory of Elemento-Organic Chemistry, College of ChemistryNankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300071 P. R. China
| | - Zhijin Fan
- Insitute and State Key Laboratory of Elemento-Organic Chemistry, College of ChemistryNankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300071 P. R. China
| | - Zhengming Li
- Insitute and State Key Laboratory of Elemento-Organic Chemistry, College of ChemistryNankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300071 P. R. China
| | - Zhenghong Zhou
- Insitute and State Key Laboratory of Elemento-Organic Chemistry, College of ChemistryNankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300071 P. R. China
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33
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Luo W, Song D, Fang L, Nian S, Hou H, Ling F, Zhong W. Chiral Bifunctional Ferrocenylphosphine‐Catalyzed Enantioselective Allylic Alkylation of Morita−Baylis−Hillman Carbonates with Pyrazolin‐5‐ones. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800547] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Wenjun Luo
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical SciencesZhejiang University of Technology Hangzhou 310014 P R China
| | - Dingguo Song
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical SciencesZhejiang University of Technology Hangzhou 310014 P R China
| | - Lu Fang
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical SciencesZhejiang University of Technology Hangzhou 310014 P R China
| | - Sanfei Nian
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical SciencesZhejiang University of Technology Hangzhou 310014 P R China
| | - Huacui Hou
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical SciencesZhejiang University of Technology Hangzhou 310014 P R China
| | - Fei Ling
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical SciencesZhejiang University of Technology Hangzhou 310014 P R China
| | - Weihui Zhong
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical SciencesZhejiang University of Technology Hangzhou 310014 P R China
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34
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Basu P, Sikdar R, Kumar T, Namboothiri INN. Synthesis of Functionalized Arenopyrans and Arenylsulfanes by Reacting Nitroallylic Acetates with Arenols and Arenethiols. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801132] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Pallabita Basu
- Department of Chemistry; Indian Institute of Technology Bombay; 400 076 Mumbai India
| | - Robi Sikdar
- Department of Chemistry; Indian Institute of Technology Bombay; 400 076 Mumbai India
| | - Tarun Kumar
- Department of Chemistry; Indian Institute of Technology Bombay; 400 076 Mumbai India
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35
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Takagi R, Fujii E, Kondo H. Enantioselective Michael Reaction of Cyclic β-Ketoesters with Morita-Baylis-Hillman Derivatives Using a Phase-Transfer Catalyst. J Org Chem 2018; 83:11191-11203. [PMID: 30130106 DOI: 10.1021/acs.joc.8b01777] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
This study aims to develop a highly enantioselective Michael reaction of cyclic β-ketoesters with Morita-Baylis-Hillman (MBH) derivatives using a phase-transfer catalyst. Cyclic β-ketoesters reacted with MBH derivatives to stereoselectively generate a quaternary carbon center in the presence of cinchona alkaloid-derived bulky ammonium catalyst, and aqueous KOH and Michael adducts bearing an acrylate moiety were obtained in good chemical yields with good enantioselectivity.
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Affiliation(s)
- Ryukichi Takagi
- Department of Chemistry, Graduate School of Science , Hiroshima University , 1-3-1 Kagamiyama , Higashi-Hiroshima 739-8526 , Japan
| | - Emi Fujii
- Department of Chemistry, Graduate School of Science , Hiroshima University , 1-3-1 Kagamiyama , Higashi-Hiroshima 739-8526 , Japan
| | - Hirotoshi Kondo
- Department of Chemistry, Graduate School of Science , Hiroshima University , 1-3-1 Kagamiyama , Higashi-Hiroshima 739-8526 , Japan
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36
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Kim YH, Jang S, Kim DY. Highly Diastereo- and Enantioselective Organocatalyzed Michael/Oxa-Michael Sequence: Asymmetric Synthesis of Pyranonaphthoquinone Derivatives. B KOREAN CHEM SOC 2018. [DOI: 10.1002/bkcs.11566] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yong Hwan Kim
- Department of Chemistry; Soonchunhyang University; Chungnam 31538 South Korea
| | - Subin Jang
- Department of Chemistry; Soonchunhyang University; Chungnam 31538 South Korea
| | - Dae Young Kim
- Department of Chemistry; Soonchunhyang University; Chungnam 31538 South Korea
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37
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Zhao P, Wu X, Geng X, Wang C, Wu YD, Wu AX. Iodine-promoted five-component reaction using fragment assembly strategy to construct dihydrooxepines. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.06.047] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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38
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Xiao Y, Jiang R, Wang Y, Zhou Z. Enantioselective Construction of Spiro Thiazol-4-one Derivatives with Multiple Stereocenters via an Organocatalyzed Multicomponent Cascade Reaction. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800086] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yuanyuan Xiao
- Institute and State Key Laboratory of Elemento-Organic Chemistry; College of Chemistry, Nankai University
- Collaborative Innovation Center of Chemical Science; Engineering, Nankai University; Tianjin 300071 People's Republic of China
| | - Rongrong Jiang
- Institute and State Key Laboratory of Elemento-Organic Chemistry; College of Chemistry, Nankai University
- Collaborative Innovation Center of Chemical Science; Engineering, Nankai University; Tianjin 300071 People's Republic of China
| | - Youming Wang
- Institute and State Key Laboratory of Elemento-Organic Chemistry; College of Chemistry, Nankai University
- Collaborative Innovation Center of Chemical Science; Engineering, Nankai University; Tianjin 300071 People's Republic of China
| | - Zhenghong Zhou
- Institute and State Key Laboratory of Elemento-Organic Chemistry; College of Chemistry, Nankai University
- Collaborative Innovation Center of Chemical Science; Engineering, Nankai University; Tianjin 300071 People's Republic of China
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39
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Wu C, Chen K. Organocatalytic Three‐Component, One‐Pot Reaction of Highly Substituted Tetrahydropyrano[2, 3‐c]pyrazoles. ChemistrySelect 2018. [DOI: 10.1002/slct.201800726] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Chia‐Yu Wu
- Department of ChemistryNational Taiwan Normal University, 88 Sec. 4 TingChow Road Taipei 116 Taiwan
| | - Kwunmin Chen
- Department of ChemistryNational Taiwan Normal University, 88 Sec. 4 TingChow Road Taipei 116 Taiwan
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40
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Muthusamy S, Gangadurai C. “On water” cascade synthesis of benzopyranopyrazoles and their macrocycles. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.03.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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41
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Liu JY, Yang XC, Lu H, Gu YC, Xu PF. Organocatalytic, Enantioselective Friedel–Crafts Reaction of Indoles in the Carbocyclic Ring and Electron-Rich Phenols. Org Lett 2018; 20:2190-2194. [DOI: 10.1021/acs.orglett.8b00503] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Jin-Yu Liu
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Xie-Chao Yang
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Hong Lu
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Yu-Cheng Gu
- Syngenta Jealott’s Hill International Research Centre, Bracknell, Berks RG42 6EY, United Kingdom
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
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42
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Cui L, Lv D, Wang Y, Fan Z, Li Z, Zhou Z. Asymmetric Formal [4 + 2] Annulation of o-Quinone Methides with β-Keto Acylpyrazoles: A General Approach to Optically Active trans-3,4-Dihydrocoumarins. J Org Chem 2018. [DOI: 10.1021/acs.joc.8b00234] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Liying Cui
- Institute and State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, P. R. China
| | - Dan Lv
- Institute and State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, P. R. China
| | - Youming Wang
- Institute and State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, P. R. China
| | - Zhijin Fan
- Institute and State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, P. R. China
| | - Zhengming Li
- Institute and State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, P. R. China
| | - Zhenghong Zhou
- Institute and State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, P. R. China
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43
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Li SW, Wan Q, Kang Q. Chiral-at-Metal Rh(III) Complex-Catalyzed Michael Addition of Pyrazolones with α,β-Unsaturated 2-Acyl Imidazoles. Org Lett 2018; 20:1312-1315. [PMID: 29446638 DOI: 10.1021/acs.orglett.8b00040] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient enantioselective conjugate addition of pyrazolones with α,β-unsaturated 2-acyl imidazoles catalyzed by chiral-at-metal rhodium complex is reported. The corresponding adducts were obtained in good yields (85%-96%) with excellent enantioselectivities (up to >99%). This protocol exhibits extraordinary reactivity, because of the fact that a complex with as little as 0.05 mol % Rh(III) can catalyze the title reaction on a gram-scale with excellent enantioselectivity.
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Affiliation(s)
- Shi-Wu Li
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West, Fuzhou, 350002, China.,University of Chinese Academy of Sciences , Beijing, 100049, China
| | - Qian Wan
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West, Fuzhou, 350002, China
| | - Qiang Kang
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West, Fuzhou, 350002, China
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44
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Liu S, Bao X, Wang B. Pyrazolone: a powerful synthon for asymmetric diverse derivatizations. Chem Commun (Camb) 2018; 54:11515-11529. [DOI: 10.1039/c8cc06196c] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This feature article reports recent advances in the asymmetric diverse derivatizations of the pyrazolone scaffold.
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Affiliation(s)
- Siyuan Liu
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Xiaoze Bao
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Baomin Wang
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
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45
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Bao X, Wei S, Qu J, Wang B. C6′ steric bulk of cinchona alkaloid enables an enantioselective Michael addition/annulation sequence toward pyranopyrazoles. Chem Commun (Camb) 2018; 54:2028-2031. [DOI: 10.1039/c8cc00154e] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A C6′ silyloxyl quinine catalyzed asymmetric Michael addition/annulation cascade between pyrazolones and enynones was developed.
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Affiliation(s)
- Xiaoze Bao
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Shiqiang Wei
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Baomin Wang
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
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46
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Li F, Pei W, Wang J, Liu J, Wang J, Zhang ML, Chen Z, Liu L. Organocatalytic asymmetric synthesis of compounds bearing both isoxazole and pyrazole moieties via 1,6-addition of pyrazol-5-ones to 3-methyl-4-nitro-5-alkenylisoxazoles. Org Chem Front 2018. [DOI: 10.1039/c8qo00084k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Bifunctional thiourea catalyzed 1,6-addition of pyrazol-5-ones to 3-methyl-4-nitro-5-alkenylisoxazoles to provide the desired products in 72–90% yield and 83–94% ee.
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Affiliation(s)
- Feng Li
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Wenlong Pei
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Jingjing Wang
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Jie Liu
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Juan Wang
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Ming-liang Zhang
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Zhiming Chen
- School of Chemistry and Materials Science
- Guizhou Normal University
- Guiyang
- People's Republic of China
| | - Lantao Liu
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
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47
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Zhang J, Yin G, Du Y, Yang Z, Li Y, Chen L. Michael–Michael Addition Reactions Promoted by Secondary Amine-Thiourea: Stereocontrolled Construction of Barbiturate-Fused Tetrahydropyrano Scaffolds and Pyranocoumarins. J Org Chem 2017; 82:13594-13601. [DOI: 10.1021/acs.joc.7b01902] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Jing Zhang
- School
of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Guohui Yin
- School
of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, PR China
| | - Yuchao Du
- School
of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Ziqi Yang
- School
of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Yang Li
- School
of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Ligong Chen
- School
of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
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48
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Chanda T, Zhao JC. Recent Progress in Organocatalytic Asymmetric Domino Transformations. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701059] [Citation(s) in RCA: 121] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tanmoy Chanda
- Department of Chemistry University of Texas at San Antonio One UTSA Circle San Antonio TX 78249-0698 USA
| | - John C.‐G. Zhao
- Department of Chemistry University of Texas at San Antonio One UTSA Circle San Antonio TX 78249-0698 USA
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49
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Li Y, Zhang H, Wei R, Miao Z. Chemo- and Diastereoselective Construction of Indenopyrazolines via
a Cascade aza-Michael/Aldol Annulation of Huisgen Zwitterions with 2-Arylideneindane-1,3-diones. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701013] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Yuming Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry; Nankai University; Weijin Road 94 Tianjin 300071 People's Republic of China
| | - Haikun Zhang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry; Nankai University; Weijin Road 94 Tianjin 300071 People's Republic of China
| | - Rong Wei
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry; Nankai University; Weijin Road 94 Tianjin 300071 People's Republic of China
| | - Zhiwei Miao
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry; Nankai University; Weijin Road 94 Tianjin 300071 People's Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 People's Republic of China
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50
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Wang J, Wang P, Wang L, Li D, Wang K, Wang Y, Zhu H, Yang D, Wang R. Nickel-Mediated Asymmetric Allylic Alkylation between Nitroallylic Acetates and Acyl Imidazoles. Org Lett 2017; 19:4826-4829. [PMID: 28862455 DOI: 10.1021/acs.orglett.7b02264] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A nickel-mediated asymmetric allylic alkylation reaction between imidazole-modified ketones and nitroallylic acetates is presented. This reaction is catalyzed by a simple chiral diamine-nickel catalyst under mild conditions and leads to a series of novel enantioenriched α-allylic adducts in moderate to good yields with excellent enantioselectivities. Furthermore, transformation of the allylic adducts could smoothly lead to chiral γ-nitro-esters containing three continuous stereocenters in good yields.
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Affiliation(s)
- Jie Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University , Lanzhou, 730000, China
| | - Pengxin Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University , Lanzhou, 730000, China
| | - Linqing Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University , Lanzhou, 730000, China
| | - Dan Li
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University , Lanzhou, 730000, China
| | - Kezhou Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University , Lanzhou, 730000, China
| | - Yuan Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University , Lanzhou, 730000, China
| | - Haiyong Zhu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University , Lanzhou, 730000, China
| | - Dongxu Yang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University , Lanzhou, 730000, China
| | - Rui Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University , Lanzhou, 730000, China
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