1
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Li F, Yang Q, Li H, Cui YZ, Wang YB. Silver(I)-Promoted [3 + 3]-Cycloaddition of 2-(2-Enynyl)quinolines with N'-(2-Alkynylbenzylidene)hydrazides. J Org Chem 2024; 89:11567-11575. [PMID: 39087584 DOI: 10.1021/acs.joc.4c01264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2024]
Abstract
An effective and straightforward Ag(I)-mediated annulation of 2-(2-enynyl)quinolines and N'-(2-alkynylbenzylidene)hydrazides was developed, forging various synthetically challenging 17bH-isoquinolino[2'',1'':1',6']pyridazino[4',5':3,4]pyrrolo[1,2-a]quinolines, including different nitrogen-containing fused rings, in moderate to excellent yields. This one-pot cycloaddition strategy features exclusive regioselectivity, high atom economy, and broad substrate scope under mild conditions. The practicality and reliability of this cycloaddition reaction was demonstrated by a successful scale-up synthesis.
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Affiliation(s)
- Feng Li
- College of Chemistry and Molecular Science, Henan University, Kaifeng 475004, China
| | - Qing Yang
- College of Chemistry and Molecular Science, Henan University, Kaifeng 475004, China
| | - He Li
- College of Chemistry and Molecular Science, Henan University, Kaifeng 475004, China
| | - Yan-Zhao Cui
- College of Chemistry and Molecular Science, Henan University, Kaifeng 475004, China
| | - Yan-Bo Wang
- College of Chemistry and Molecular Science, Henan University, Kaifeng 475004, China
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2
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Gayen P, Ghorai P. Organocatalytic Asymmetric Construction of Spirooxazines via Chemoselective Cascade Addition of N-Substituted Hydroxylamine with Keto-bis-enone. Org Lett 2024; 26:6185-6190. [PMID: 39023290 DOI: 10.1021/acs.orglett.4c02062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
Spirooxazines represent a privileged heterocyclic scaffold having pronounced biological importance. Herein, we introduce a chiral bifunctional squaramide catalyzed highly chemoselective cascade reaction involving aza-Michael/1,2-addition/oxa-Michael addition of N-substituted hydroxylamine with keto-bis-enones. This strategy enables the synthesis of highly enantioenriched oxa-spirooxazines with a broad substrate tolerance. Scalability and synthetic transformation have demonstrated the feasibility of the protocol. Furthermore, control experiments provided insights into the reaction mechanism.
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Affiliation(s)
- Prasenjit Gayen
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal-462066, India
| | - Prasanta Ghorai
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal-462066, India
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3
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Gorad SS, Ghorai P. Organocatalytic Desymmetric Double Aza-Michael Addition Cascade: Enantioselective Synthesis of Fused Morpholines. Org Lett 2024; 26:5571-5576. [PMID: 38921656 DOI: 10.1021/acs.orglett.4c01988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
Double aza-Michael addition (DAM) has become an emerging strategy for the construction of two carbon-nitrogen bonds in a single step, which can significantly simplify the synthesis of N-heterocycles. Hitherto, their asymmetric catalytic genre remains unattempted. Herein, we describe the judicious design of an organocatalytic enantioselective desymmetric double aza-Michael addition cascade to access a series of functionalized fused morpholines with excellent yields and diastereo- and enantioselectivities. A one-pot telescopic synthesis was demonstrated for a bridged triheterocyclic compound. In addition, scale-up synthesis and various attractive postsynthetic modifications of the title products amplify the significance of the current methodology.
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Affiliation(s)
- Sachin S Gorad
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal-462066, India
| | - Prasanta Ghorai
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal-462066, India
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4
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Wang Z, Shi B, Zhao C, Zeng Y. Hypervalent Chalcogen Bonds Catalysis on the Intramolecular Aza-Michael Reaction of Aminochalcone: Catalytic Performance and Chalcogen Bond Properties. Chemistry 2024:e202401886. [PMID: 38857119 DOI: 10.1002/chem.202401886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Revised: 06/03/2024] [Accepted: 06/10/2024] [Indexed: 06/12/2024]
Abstract
Chalcogen bond (ChB) catalysis, as a new type in the field of non-covalent bond catalysis, has become a hot research topic in the field of organocatalysis in recent years. In the present work, we investigated the catalytic performance of a series of hypervalent ChB catalysis based on the intramolecular Aza-Michael reaction of aminochalcone. The reaction includes the carbon-nitrogen bond coupling step (key step) and the proton transfer step. The catalytic performance of mono-dentate pentafluorophenyl chalcogen bond donor ChB1 was comparable to that of bis-dentate chalcogen bond donor ChB4, and stronger than that of mono-dentate chalcogen bond donors ChB2 and ChB3. The formation of the chalcogen bond between the catalyst and the carbonyl oxygen atom of the reactant, causing the charge rearrangement of the reactant and C(1) charge of the -C-Ph group to become more positive, thereby the ChB catalysis promoted the nucleophile reaction. The electron density of the chalcogen bond of the pre-complex, the most positive electrostatic potentials of the catalyst, and the NPA charge of the key atom are proportional to the Gibbs energy barrier of the C-N bond coupling process, which provides an idea to predict the catalytic activity of the ChB catalysis.
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Affiliation(s)
- Zhuo Wang
- College of Chemistry and Materials Science, Hebei Key Laboratory of Inorganic Nano-Materials, Hebei Normal University, Shijiazhuang, 050024, P. R. China
- Key Laboratory of Cluster Science, Ministry of Education of China, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Bo Shi
- College of Chemistry and Materials Science, Hebei Key Laboratory of Inorganic Nano-Materials, Hebei Normal University, Shijiazhuang, 050024, P. R. China
| | - Chang Zhao
- College of Chemistry and Materials Science, Hebei Key Laboratory of Inorganic Nano-Materials, Hebei Normal University, Shijiazhuang, 050024, P. R. China
| | - Yanli Zeng
- College of Chemistry and Materials Science, Hebei Key Laboratory of Inorganic Nano-Materials, Hebei Normal University, Shijiazhuang, 050024, P. R. China
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5
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Das D, Pingoliya RK, Ghorai P. A One-Pot Cascade Strategy toward Organocatalytic Enantioselective Construction of Fused Benzimidazoles. Org Lett 2024; 26:4502-4507. [PMID: 38767405 DOI: 10.1021/acs.orglett.4c01336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Herein, we describe an asymmetric assembly of ortho-aromatic diamines and formyl tethered Michael acceptors forming chiral fused benzimidazoles. A cinchona-alkaloid-derived bifunctional squaramide catalyst enables the methodology through on-site dihydrobenzimidazole formation followed by an aza-Michael addition/oxidation cascade. This protocol stands out for its excellent catalytic efficiency over the background reaction and its mild conditions, making it more practical. Various Michael acceptors, including enones, ester, and thioester, were successful substrates in this study. Additionally, this methodology has demonstrated scalability and successfully showcased postsynthetic transformations.
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Affiliation(s)
- Dipankar Das
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal-462066, India
| | - Rahul Kumar Pingoliya
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal-462066, India
| | - Prasanta Ghorai
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal-462066, India
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6
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Lyu X, Jung H, Kim D, Chang S. Enantioselective Access to β-Amino Carbonyls via Ni-Catalyzed Formal Olefin Hydroamidation. J Am Chem Soc 2024; 146:14745-14753. [PMID: 38742738 DOI: 10.1021/jacs.4c02497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
We herein describe a Ni-catalyzed formal hydroamidation of readily available α,β-unsaturated carbonyl compounds to afford valuable chiral β-amino acid derivatives (up to >99:1 e.r.) using dioxazolones as a robust amino source. A wide range of alkyl-substituted olefins conjugated to esters, amides, thioesters, and ketones were successfully amidated at the β-position with excellent enantioselectivity for the first time. Combined experimental and computational mechanistic studies supported our working hypothesis that this unconventional β-amidation of unsaturated carbonyl substrates can be attributed to the polar-matched migratory olefin insertion of an (amido)(Cl)NiII intermediate, in situ generated from the dioxazolone precursor.
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Affiliation(s)
- Xiang Lyu
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Hoimin Jung
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Dongwook Kim
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Sukbok Chang
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
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7
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Savchuk M, Vo-Thanh G, Oudeyer S, Beucher H, Brière JF. Vinylogous and stereoselective domino synthesis of pyrano[2,3- c]pyrroles from alkylidene meldrum's acids. Org Biomol Chem 2024; 22:2948-2952. [PMID: 38482880 DOI: 10.1039/d4ob00233d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2024]
Abstract
A domino Vinylogous aza-Michael-Aldol-Cyclocondensation (aza-VMAC) reaction was achieved with a series of alkylidene Meldrum's acid derivatives under simple operational conditions paving the way to novel pyrano[2,3-c]pyrroles in an excellent diasteroselectivity (>96 : 4), encompassing the relative control of three contiguous stereocenters.
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Affiliation(s)
- Mariia Savchuk
- INSA Rouen Normandie, Univ Rouen Normandie, CNRS, Normandie Univ, COBRA UMR 6014, INC3M FR 3038, F-76000 Rouen, France.
| | - Giang Vo-Thanh
- Institut de Chimie Moléculaire et des Matériaux d'Orsay. CNRS UMR 8182, Université Paris Saclay, 91405 Orsay Cedex, France
| | - Sylvain Oudeyer
- INSA Rouen Normandie, Univ Rouen Normandie, CNRS, Normandie Univ, COBRA UMR 6014, INC3M FR 3038, F-76000 Rouen, France.
| | - Hélène Beucher
- INSA Rouen Normandie, Univ Rouen Normandie, CNRS, Normandie Univ, COBRA UMR 6014, INC3M FR 3038, F-76000 Rouen, France.
| | - Jean-François Brière
- INSA Rouen Normandie, Univ Rouen Normandie, CNRS, Normandie Univ, COBRA UMR 6014, INC3M FR 3038, F-76000 Rouen, France.
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8
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Zhang J, Yan X, Zhang Q, Wang F, Yang B, Yang Y. Total Syntheses of Hosieines A-C. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2308164. [PMID: 38326080 PMCID: PMC11005691 DOI: 10.1002/advs.202308164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 01/21/2024] [Indexed: 02/09/2024]
Abstract
The collective total syntheses of (±)-hosieines A-C with a cage-like tetracyclic framework have been realized, which includes the first syntheses of hosieines B-C. The key strategy of the synthesis employs a one-pot domino reaction that involves Cu-catalyzed [3+2] cycloaddition, 1,6-enone formation, and 1,6-aza-Michael addition forming the 5/6/6-aza-tricyclic skeleton. Other salient synthetic tactics comprise a challenging double bond migration and a 1,4-aza-Michael addition reaction to afford the tetracyclic framework.
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Affiliation(s)
- Jiayang Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource EvaluationSchool of PharmacyHuazhong University of Science and Technology13 Hangkong RoadWuhan430030China
| | - Xu Yan
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource EvaluationSchool of PharmacyHuazhong University of Science and Technology13 Hangkong RoadWuhan430030China
| | - Qing‐Bao Zhang
- Shandong Peninsula Engineering Research Center of Comprehensive Brine UtilizationWeifang University of Science and TechnologyShouguang262700China
| | - Fang Wang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource EvaluationSchool of PharmacyHuazhong University of Science and Technology13 Hangkong RoadWuhan430030China
| | - Bin Yang
- Baylor College of MedicineHoustonTX77030USA
| | - Yang Yang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource EvaluationSchool of PharmacyHuazhong University of Science and Technology13 Hangkong RoadWuhan430030China
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9
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Qi SS, Sun XP, Sun YB, Zhai JJ, Wang YF, Chu MM, Xu DQ. Synthesis of Chiral Diarylmethylamides via Catalytic Asymmetric Aza-Michael Addition of Amides to ortho-Quinomethanes. J Org Chem 2024. [PMID: 38181049 DOI: 10.1021/acs.joc.3c01976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2024]
Abstract
Chiral diarylmethylamides are a privileged skeleton in many bioactive molecules. However, the enantioselective synthesis of such molecules remains a long-standing challenge in organic synthesis. Herein, we report a chiral bifunctional squaramide catalyzed asymmetric aza-Michael addition of amides to in situ generated ortho-quinomethanes, affording enantioenriched diarylmethylamides in good yields with excellent enantioselectivities. This work not only provides a new strategy for the construction of the diarylmethylamides but also represents the practicability of amides as nitrogen-nucleophiles in asymmetric organocatalysis.
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Affiliation(s)
- Suo-Suo Qi
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Xiao-Ping Sun
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Yan-Biao Sun
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Jing-Jing Zhai
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Yi-Feng Wang
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Ming-Ming Chu
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, P. R. China
| | - Dan-Qian Xu
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China
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10
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Xie L, Zhao C, Wang Z, Chen Z, Zhao Y, Liu X, Xu X, Liu W, Li X, Wu L. Synthesis of Polycyclic Imidazolidinones via Cascade [3 + 2]-Annulation of β-Oxo-acrylamides with Cyclic N-Sulfonyl Imines. J Org Chem 2023; 88:15805-15816. [PMID: 37906181 DOI: 10.1021/acs.joc.3c01878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
An Et3N-catalyzed cascade [3 + 2]-annulation of β-oxo-acrylamides with cyclic N-sulfonyl ketimines or sulfamate-derived imines is developed under mild reaction conditions, which provides a concise and efficient route to access valuable sultam- or sulfamidate-fused imidazolidinone derivatives in good to excellent yields (80-95% yields) with excellent diastereoselectivities (>20:1 drs). The current protocol features atom economy, a transition-metal-free process, and broad functional group tolerance. Moreover, the asymmetric variant of the [3 + 2]-cycloaddition reaction was achieved in the presence of diphenylethanediamine or quinine-based bifunctional squaramide organocatalysts C-1 and C-11, giving the corresponding chiral polycyclic imidazolidinones in 68-90% yields with 25-94% ees and >20:1 drs in all cases.
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Affiliation(s)
- Lei Xie
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Chenyi Zhao
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Zhaoxue Wang
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Zirui Chen
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Yingying Zhao
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Xinghan Liu
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Xiangdong Xu
- Liaocheng Inspection and Testing Center, Liaocheng 252000, Shandong, P. R. China
| | - Wanxing Liu
- The Non-Public Enterprise Service Center of Liaocheng, Liaocheng 252000, Shandong, P. R. China
| | - Xiaojing Li
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Lingang Wu
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
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11
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Zhu S, Cheng Y, Wang J, Liu G, Luo T, Li X, Yang S, Yang R. Biohybrid magnetic microrobots: An intriguing and promising platform in biomedicine. Acta Biomater 2023; 169:88-106. [PMID: 37572981 DOI: 10.1016/j.actbio.2023.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/19/2023] [Accepted: 08/03/2023] [Indexed: 08/14/2023]
Abstract
Biohybrid magnetic microrobots (BMMs) have emerged as an exciting class of microrobots and have been considered as a promising platform in biomedicine. Many microorganisms and body's own cells show intriguing properties, such as morphological characteristics, biosafety, and taxis abilities (e.g., chemotaxis, aerotaxis), which have made them attractive for the fabrication of microrobots. For remote controllability and sustainable actuation, magnetic components are usually incorporated onto these biological entities, and other functionalized non-biological components (e.g., therapeutic agents) are also included for specific applications. This review highlights the latest developments in BMMs with a focus on their biomedical applications. It starts by introducing the fundamental understanding of the propulsion system at the microscale in a magnetically driven manner, followed by a summary of diverse BMMs based on different microorganisms and body's own cells along with their relevant applications. Finally, the review discusses how BMMs contribute to the advancements of microrobots, the current challenges of using BMMs in practical clinical settings, and the future perspectives of this exciting field. STATEMENT OF SIGNIFICANCE: Biohybrid magnetic microrobots (BMMs), composed of biological entities and functional parts, hold great potential and serve as a novel and promising platform for biomedical applications such as targeted drug delivery. This review comprehensively summarizes the recent advancements in BMMs for biomedical applications, mainly focused on the representative propulsion modalities in a magnetically propelled manner and diverse designs of BMMs based on different biological entities, including microorganisms and body's own cells. We hope this review can provide ideas for the future design, development, and innovation of micro/nanorobots in the field of biomedicine.
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Affiliation(s)
- Shilu Zhu
- School of Biomedical Engineering, 3D-Printing and Tissue Engineering Center, Anhui Medical University, Hefei 230032, China
| | - Yifan Cheng
- School of Biomedical Engineering, 3D-Printing and Tissue Engineering Center, Anhui Medical University, Hefei 230032, China
| | - Jian Wang
- School of Biomedical Engineering, 3D-Printing and Tissue Engineering Center, Anhui Medical University, Hefei 230032, China
| | - Guangli Liu
- School of Biomedical Engineering, 3D-Printing and Tissue Engineering Center, Anhui Medical University, Hefei 230032, China
| | - Tingting Luo
- School of Biomedical Engineering, 3D-Printing and Tissue Engineering Center, Anhui Medical University, Hefei 230032, China.
| | - Xiaojian Li
- Department of Management, Hefei University of Technology, Hefei 230009, China.
| | - Shanlin Yang
- Key Laboratory of Process Optimization and Intelligent Decision-Making (Ministry of Education), Hefei University of Technology, Hefei 230009, China.
| | - Runhuai Yang
- School of Biomedical Engineering, 3D-Printing and Tissue Engineering Center, Anhui Medical University, Hefei 230032, China.
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12
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Govada GV, Rajasekhara Reddy S. Synthesis and in Silico Study of Novel Benzisoxazole-Chromene Derivatives as Potent Inhibitors of Acetylcholinesterase: Metal-Free Site-Selective C-N Bond Formation via Aza-Michael Reaction. Chem Biodivers 2023; 20:e202300573. [PMID: 37415329 DOI: 10.1002/cbdv.202300573] [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: 04/22/2023] [Revised: 07/05/2023] [Accepted: 07/06/2023] [Indexed: 07/08/2023]
Abstract
An efficient metal-free approach for site selective C-N coupling reaction of benzo[d]isoxazole and 2H-chromene derivatives has been designed and developed against AchE. This nitrogen containing organo-base promoted methodology, which is both practical and environmentally friendly, provides an easy and suitable pathway for synthesizing Benzisoxazole-Chromene (BC) possessing poly heteroaryl moieties. The synthesized BC derivatives 4 a-n was docked into the active sites of AChE to obtain more perception into the binding modes of the compounds. Out of them, compound 4 a and 4 l displayed potent activity and high selectivity against the AChE inhibition. Final docking results indicates that compound 4 l showed the lowest binding energy of -11.2260 kcal/mol with AChE. The synthesized BC analogs would be potential candidates for promoting suitable studies in medicinal chemistry research.
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Affiliation(s)
- Grace Victoria Govada
- Advanced Catalysis laboratory, Vellore Institute of Technology (VIT), 632014, Vellore, India
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13
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Masaeli SE, Teimouri M, Adhikari B, Attarroshan M, Akin JW, Raju S, Stokes SL, Emerson JP. Sodium Trifluoroacetate mediated Copper-Catalyzed aza-Michael addition of α,β-unsaturated olefins with aromatic amines. Tetrahedron Lett 2023; 122:154520. [PMID: 37694227 PMCID: PMC10486139 DOI: 10.1016/j.tetlet.2023.154520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
We present a sodium trifluoroacetate (CF3CO2Na) mediated copper-catalyzed aza-Michael addition of aromatic amines with activated olefins under mild, aqueous reaction conditions. This simplistic protocol employs a copper catalyst (10 mol%) and water as solvent. This transformation occurs precisely with aromatic substituted amines containing both electron-donating (EDG) and electron-withdrawing (EWG) groups. A broad range of substrates were tested under the optimized conditions, which are producing good to moderate yields.
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Affiliation(s)
- S. Erfan Masaeli
- Department of Chemistry, Mississippi State University, MS 39762, USA
| | - Mohsen Teimouri
- Department of Chemistry, Mississippi State University, MS 39762, USA
| | | | | | - James W. Akin
- Department of Chemistry, Mississippi State University, MS 39762, USA
| | - Selvam Raju
- Department of Chemistry, Mississippi State University, MS 39762, USA
| | - Sean L. Stokes
- Department of Chemistry, Mississippi State University, MS 39762, USA
| | - Joseph P. Emerson
- Department of Chemistry, Mississippi State University, MS 39762, USA
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14
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Xie L, Sun L, Wu P, Wang Z, Zhao C, Wu L, Li X, Gao Z, Liu W, Nie SZ. Organocatalytic cascade nucleophilic/aza-Michael addition reactions: metal-free catalytic strategy for the synthesis of hydantoins. Org Biomol Chem 2023; 21:2295-2300. [PMID: 36825465 DOI: 10.1039/d2ob01825j] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Lewis base-catalyzed cascade nucleophilic/aza-Michael addition reaction of N-alkoxy β-oxo-acrylamides with isocyanates has been developed to afford various highly functionalized hydantoin derivatives in 80-98% yields under mild reaction conditions. The intriguing features of this method include metal-free reaction conditions, low catalyst loading, broad substrate scope and short reaction time.
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Affiliation(s)
- Lei Xie
- Address here. School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Lei Sun
- Address here. School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Ping Wu
- Address here. School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Zhaoxue Wang
- Address here. School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Chenyi Zhao
- Address here. School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Lingang Wu
- Address here. School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Xiaojing Li
- Address here. School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Zhenzhen Gao
- Address here. School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Wanxing Liu
- The Non-Public Enterprise Service Center of Liaocheng, Liaocheng 252000, Shandong, P. R. China.
| | - Shao-Zhen Nie
- Address here. School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
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15
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Qin X, Zhang J, Wang ZY, Song Y, Yang Y, Zhang W, Liu H. Highly regioselective synthesis of lactams via cascade reaction of α,β-unsaturated ketones, ketoamides, and DBU as a catalyst. RSC Adv 2023; 13:4782-4786. [PMID: 36760281 PMCID: PMC9901288 DOI: 10.1039/d2ra07117g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 12/27/2022] [Indexed: 02/08/2023] Open
Abstract
Herein, the aldol/Michael cascade reaction on the β,γ-positions of α,β-unsaturated ketones with ketoamides to construct bicyclic lactams via DBU catalysis has been developed. The substrates were well-tolerated with high regio- and diastereoselectivities in moderate to good yields (32 examples). The control experiments revealed that the hydrogen of the amide was the key factor.
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Affiliation(s)
- Xin Qin
- College of Chemistry and Materials Engineering, Wenzhou University Wenzhou 325035 P. R. China .,Institute of New Materials & Industrial Technology, Wenzhou University Wenzhou 325035 P. R. China
| | - Jinhai Zhang
- College of Chemistry and Materials Engineering, Wenzhou University Wenzhou 325035 P. R. China .,Institute of New Materials & Industrial Technology, Wenzhou University Wenzhou 325035 P. R. China
| | - Zhan-Yong Wang
- School of Pharmacy, Xinxiang UniversityXinxiang453003P. R. China
| | - Yimei Song
- College of Chemistry and Materials Engineering, Wenzhou University Wenzhou 325035 P. R. China .,Institute of New Materials & Industrial Technology, Wenzhou University Wenzhou 325035 P. R. China
| | - Yixiao Yang
- College of Chemistry and Materials Engineering, Wenzhou University Wenzhou 325035 P. R. China .,Institute of New Materials & Industrial Technology, Wenzhou University Wenzhou 325035 P. R. China
| | - Wenhai Zhang
- College of Chemistry and Materials Engineering, Wenzhou University Wenzhou 325035 P. R. China .,Institute of New Materials & Industrial Technology, Wenzhou University Wenzhou 325035 P. R. China
| | - Hongxin Liu
- College of Chemistry and Materials Engineering, Wenzhou University Wenzhou 325035 P. R. China .,Institute of New Materials & Industrial Technology, Wenzhou University Wenzhou 325035 P. R. China
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16
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Zhang W, Tang CS, Xiang SQ. Condensation of acrylonitrile and aryl acetonitrile: construction of α-amino-β-cyano cyclohexene skeletons. RSC Adv 2022; 12:29840-29843. [PMID: 36321094 PMCID: PMC9578340 DOI: 10.1039/d2ra04936h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Accepted: 09/27/2022] [Indexed: 11/07/2022] Open
Abstract
A representative condensation of acrylonitrile and aryl acetonitrile has been reported for the synthesis of α-amino-β-cyano cyclohexene. The reaction was carried out mildly in an open environment at room temperature. The scope and versatility of the method have been demonstrated with 20 examples, containing highly active ethynyl groups. Further applications for 4-aminopyrimidine compounds were performed. A mechanism was proposed, involving Michael additions between acrylonitrile and aryl acetonitriles as well as intramolecular condensation.
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Affiliation(s)
- Wei Zhang
- Chongqing University of Science and TechnologyChongqing401331China
| | | | - Shi-Qun Xiang
- Key Laboratory of Preparation and Application of Environmental Friendly Materials, Jilin Normal University, Ministry of EducationChangchun130103China,College of Chemistry, Jilin Normal UniversitySiping136000China
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17
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Wicker G, Zhou R, Schoch R, Paradies J. Sigmatropic [1,5] Carbon Shift of Transient C3 Ammonium Enolates. Angew Chem Int Ed Engl 2022; 61:e202204378. [PMID: 35535567 PMCID: PMC9401041 DOI: 10.1002/anie.202204378] [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: 03/24/2022] [Indexed: 11/22/2022]
Abstract
The stereospecific sigmatropic [1,5] carbon shift of C3 ammonium enolates is discovered. According to mechanistic, kinetic and computational experiments, this new rearrangement proceeds via the catalytic generation of a transient C3 ammonium enolate by intramolecular aza‐Michael addition. This intermediate rapidly undergoes [1,5] sigmatropic carbon migration to furnish the respective tetrahydroquinoline‐4‐ones with excellent diastereoselectivities of d.r. >99 : 1 and in 61–98 % yield.
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Affiliation(s)
- Garrit Wicker
- Department of Chemistry Paderborn University Warburger Strasse 100 33098 Paderborn Germany
| | - Rundong Zhou
- Department of Chemistry Paderborn University Warburger Strasse 100 33098 Paderborn Germany
| | - Roland Schoch
- Department of Chemistry Paderborn University Warburger Strasse 100 33098 Paderborn Germany
| | - Jan Paradies
- Department of Chemistry Paderborn University Warburger Strasse 100 33098 Paderborn Germany
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18
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Li TH, Niu C, Du DM. Enantioselective synthesis of isoxazole-containing spirooxindole tetrahydroquinolines via squaramide-catalysed cascade reactions. Org Biomol Chem 2022; 20:5582-5588. [PMID: 35796306 DOI: 10.1039/d2ob00864e] [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 class of o-sulfonylaminostyryl isoxazole synthons were designed and demonstrated to be useful building blocks in asymmetric cascade aza-Michael/Michael reaction with 3-olefinic oxindoles. This squaramide-catalysed cascade reaction afforded structurally complex isoxazole-containing spirooxindole tetrahydroquinolines bearing three contiguous stereocenters in good to excellent yields (up to 99%) with high diastereoselectivities (up to >20 : 1 dr) and enantioselectivities (up to 88% ee). Moreover, the gram-scale synthesis and synthetic transformations were also demonstrated.
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Affiliation(s)
- Tong-Hao Li
- Key Laboratory of Medical Molecule Science & Pharmaceutics Engineering (Ministry of Industry and Information Technology), School of Chemistry and Chemical Engineering, Beijing Institute of Technology, No.5 Zhongguancun South Street, Beijing 100081, People's Republic of China..
| | - Cheng Niu
- Key Laboratory of Medical Molecule Science & Pharmaceutics Engineering (Ministry of Industry and Information Technology), School of Chemistry and Chemical Engineering, Beijing Institute of Technology, No.5 Zhongguancun South Street, Beijing 100081, People's Republic of China..
| | - Da-Ming Du
- Key Laboratory of Medical Molecule Science & Pharmaceutics Engineering (Ministry of Industry and Information Technology), School of Chemistry and Chemical Engineering, Beijing Institute of Technology, No.5 Zhongguancun South Street, Beijing 100081, People's Republic of China..
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19
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Recent developments in promiscuous enzymatic reactions for carbon-nitrogen bond formation. Bioorg Chem 2022; 127:106014. [PMID: 35841668 DOI: 10.1016/j.bioorg.2022.106014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 06/07/2022] [Accepted: 07/06/2022] [Indexed: 11/21/2022]
Abstract
Biocatalytic promiscuity is a new field of enzyme application in biochemistry, which has received much attention and has developed rapidly in recent years. The promiscuous biocatalysis has been promoted as a useful supplement to traditional strategy for the formation of C-heteroatom bonds. The generation of carbon-nitrogen (CN) bonds is an important issue in synthetic chemistry and is indispensable for the manufacturing of various pharmaceuticals and agrochemicals. Therefore, numerous efficient and reliable synthetic methods for the formation of CN bonds have been developed in recent years. Enzymatic CN bond forming reactions catalyzed by lipases, cytochrome P450 monooxygenases, glycosyltransferases, amine dehydrogenases, proteases, acylases, amylases and halohydrin dehalogenases are well established for synthetic purposes. This review introduces the recent progress in the construction of CN bonds using promiscuous enzymes.
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20
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Ma R, Yang H, Ye L, Yang Q, Shi Z, Zhao Z, Li X. Stereoselective Synthesis of Chiral Hydrophenanthridines via a One-Pot Stepwise Aza-Michael/Michael/Michael Process. Org Lett 2022; 24:4798-4803. [PMID: 35758631 DOI: 10.1021/acs.orglett.2c01866] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A one-pot, two-step aza-Michael/Michael/Michael process was developed to diastereospecifically construct C6a,C10a-cis-hydrophenanthridines in a highly enantioselective manner (83-99% ee). The tricyclic products were provided in 50-99% isolated yields, sequentially promoted by bifunctional squaramide and diamine in a one-pot operation. This doubly annulative protocol indicated that the complicated polycyclic structures could be easily constructed via full employment of the available reaction sites of readily prepared precursors.
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Affiliation(s)
- Ruiying Ma
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Hongzhou Yang
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau 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
| | - Qiang Yang
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau 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, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau 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, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau 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, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
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21
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Lapetaje JE, Young CM, Shu C, Smith AD. Isothiourea-catalyzed formal enantioselective conjugate addition of benzophenone imines to β-fluorinated α,β-unsaturated esters. Chem Commun (Camb) 2022; 58:6886-6889. [PMID: 35635248 DOI: 10.1039/d2cc01936a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The isothiourea-catalyzed formal enantioselective conjugate addition of 2-hydroxybenzophenone imine derivatives to α,β-unsaturated para-nitrophenyl esters has been developed. Investigations of the scope and limitations of this procedure showed that β-electron withdrawing substituents within the α,β-unsaturated ester component are required for good product yield, giving rise to a range of β-imino ester and amide derivatives in moderate to good isolated yields with excellent enantioselectivity (20 examples, up to 81% yield and 97 : 3 er).
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Affiliation(s)
- Jerson E Lapetaje
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St. Andrews KY16 9ST, UK.
| | - Claire M Young
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St. Andrews KY16 9ST, UK.
| | - Chang Shu
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St. Andrews KY16 9ST, UK.
| | - Andrew D Smith
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St. Andrews KY16 9ST, UK.
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22
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Wicker G, Zhou R, Schoch R, Paradies J. Sigmatrope [1,5]‐Kohlenstoffverschiebung transienter C3‐Ammoniumenolate. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Garrit Wicker
- Department Chemie Universität Paderborn Warburger Strasse 100 33098 Paderborn Deutschland
| | - Rundong Zhou
- Department Chemie Universität Paderborn Warburger Strasse 100 33098 Paderborn Deutschland
| | - Roland Schoch
- Department Chemie Universität Paderborn Warburger Strasse 100 33098 Paderborn Deutschland
| | - Jan Paradies
- Department Chemie Universität Paderborn Warburger Strasse 100 33098 Paderborn Deutschland
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23
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Łowicki D, Przybylski P. Cascade synthetic strategies opening access to medicinal-relevant aliphatic 3- and 4-membered N-heterocyclic scaffolds. Eur J Med Chem 2022; 238:114438. [PMID: 35567964 DOI: 10.1016/j.ejmech.2022.114438] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 04/26/2022] [Accepted: 04/30/2022] [Indexed: 12/23/2022]
Abstract
Cascade reactions are often 'employed' by nature to construct structurally diverse nitrogen-containing heterocycles in a highly stereoselective fashion, i.e., secondary metabolites important for pharmacy. Nitrogen-containing heterocycles of three- and four-membered rings, as standalone and bicyclic compounds, inhibit different enzymes and are pharmacophores of approved drugs or drug candidates considered in many therapies, e.g. anticancer, antibacterial or antiviral. Domino transformations are in most cases in line with modern green chemistry concepts due to atom economy, one-pot procedures often without use the protective groups, time-saving and at markedly lower costs than multistep transformations. The tandem approaches can help to obtain novel N-heterocyclic scaffolds, functionalized according to structural requirements of the target in cells, taking into account the nature of functional group and stereochemistry. On the other hand cascade strategies allow to modify small N-heterocyclic rings in a systematic way, which is beneficial for structure-activity relationship (SAR) analyses. This review is focused on the biological relevance of the N-heterocyclic scaffolds with smaller 3- and 4-membered rings among approved drugs and leading structures of drug candidates. The cascade synthetic strategies offering N-heterocyclic scaffolds, at relatively good yields and high stereoselectivity, are discussed here. The review covers mainly years from 2015 to 2021.
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Affiliation(s)
- Daniel Łowicki
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznan, Poland
| | - Piotr Przybylski
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznan, Poland.
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24
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Affiliation(s)
- Alexander Yu. Rulev
- A. E. Favorsky Institute of Chemistry Siberian Branch of the Russian Academy of Sciences Irkutsk 664033 Russia
| | - Ilya A. Tyumentsev
- A. E. Favorsky Institute of Chemistry Siberian Branch of the Russian Academy of Sciences Irkutsk 664033 Russia
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25
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Łowicki D, Przybylski P. Tandem construction of biological relevant aliphatic 5-membered N-heterocycles. Eur J Med Chem 2022; 235:114303. [PMID: 35344904 DOI: 10.1016/j.ejmech.2022.114303] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 03/14/2022] [Accepted: 03/15/2022] [Indexed: 12/20/2022]
Abstract
Nature often uses cascade reactions in a highly stereocontrolled manner for assembly structurally diverse nitrogen-containing heterocyclic scaffolds, i.e. secondary metabolites, important for medicinal chemistry and pharmacy. Five-membered nitrogen-containing heterocycles as standalone rings, as well as spiro and polycyclic systems are pharmacophores of drugs approved in various therapies, i.a. antibacterial or antiviral, antifungal, anticancer, antidiabetic, as they target many key enzymes. Furthermore, a large number of pyrrolidine derivatives are currently considered as drug candidates. Cascade transformations, also known as domino or tandem reactions, offer straightforward methods to build N-heterocyclic libraries of the great structural variety desired for drawing SAR conclusions. The tandem transformations are often atom economic and time-saving because they are performed as the one-pot, so no need for purification after each 'virtual' step and the limited necessity of protective groups are characteristic for these processes. Thus, the same results as in classical multistep synthesis can be achieved at markedly lower costs and shorter time, which is in line with modern green chemistry rules. Great advantage of cascade reactions is often reflected in their high regio- and stereoselectivities, enabling the preparing of the heterocyclic compound better fitted to the expected target in cells. This review reveals the biological relevance of N-heterocyclic scaffolds based on saturated 5-membered rings since we showed a number of examples of approved drugs together with the recent biologically attractive leading structures of drug candidates. Next, novel cascade synthetic procedures, taking into account the structure of the reactants and reaction mechanisms, enabling to obtain biological-relevant heterocyclic frameworks with good yields and relatively high stereoselectivity, were reviewed and compared. The review covers the advances of designing biological active N-heterocycles mainly from 2018 to 2021, whereas the synthetic part is focused on the last 7 years.
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Affiliation(s)
- Daniel Łowicki
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznan, Poland
| | - Piotr Przybylski
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznan, Poland.
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26
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Zhang JL, Ma R, Zhao HH, Xu PF. Enantioselective construction of spiro-tetrahydroquinoline scaffolds through asymmetric catalytic cascade reactions. Chem Commun (Camb) 2022; 58:3493-3496. [PMID: 35191451 DOI: 10.1039/d2cc00502f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
An efficient and concise strategy has been successfully developed for merging spiro-tetrahydroquinoline with spiro-benzofuranone into a single new skeleton through asymmetric catalytic cascade reactions catalyzed by quinine-derived chiral bifunctional squaramide organocatalysts. In this approach, differently substituted spiro-tetrahydroquinoline derivatives were smoothly obtained with high yields, and excellent diastereoselectivities and enantioselectivities (up to 99% yield, up to >20 : 1 dr, up to >99% ee, 40 examples) under mild reaction conditions.
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Affiliation(s)
- Jia-Lu Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Rui Ma
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Huan-Huan Zhao
- 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. .,State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou 730000, P. R. China
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27
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Chen J, Zhang Y, Zhu DY, Zhang XJ, Yan M. Construction of Chiral Quaternary Carbon Stereocenters by Asymmetric Michael Addition of 4‐Amido‐5‐hydroxylpyrazoles to Ethylene Sulfonyl Fluoride. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jie Chen
- Sun Yat-Sen University School of Pharmaceutical Sciences CHINA
| | - Yue Zhang
- Sun Yat-Sen University School of Pharmaceutical Sciences CHINA
| | - Dong-yu Zhu
- Sun Yat-Sen University School of Pharmaceutical Sciences CHINA
| | - Xue-jing Zhang
- Sun Yat-Sen University School of Pharmaceutical Sciences No 132 Donghuanxi Road, Guangzhou Mega Center North 510006 guangzhou CHINA
| | - Ming Yan
- Sun Yat-Sen University School of Pharmaceutical Sciences CHINA
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28
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Pellissier H. Recent developments in enantioselective nickel( ii)-catalyzed conjugate additions. Org Chem Front 2022. [DOI: 10.1039/d2qo01047j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This review updates the field of enantioselective nickel-catalyzed conjugate additions since 2016.
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Affiliation(s)
- Hélène Pellissier
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
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