1
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Leśniewska A, Przybylski P. Seven-membered N-heterocycles as approved drugs and promising leads in medicinal chemistry as well as the metal-free domino access to their scaffolds. Eur J Med Chem 2024; 275:116556. [PMID: 38879971 DOI: 10.1016/j.ejmech.2024.116556] [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: 03/04/2024] [Revised: 05/29/2024] [Accepted: 05/30/2024] [Indexed: 06/18/2024]
Abstract
Azepanes or azepines are structural motifs of many drugs, drug candidates and evaluated lead compounds. Even though compounds having N-heterocyclic 7-membered rings are often found in nature (e.g. alkaloids), the natural compounds of this group are rather rare as approved therapeutics. Thus, recently studied and approved azepane or azepine-congeners predominantly consist of semi-synthetically or synthetically-obtained scaffolds. In this review a comparison of approved drugs and recently investigated leads was proposed taking into regard their structural aspects (stereochemistry), biological activities, pharmacokinetic properties and confirmed molecular targets. The 7-membered N-heterocycles reveal a wide range of biological activities, not only against CNS diseases, but also as e.g. antibacterial, anticancer, antiviral, antiparasitic and against allergy agents. As most of the approved or investigated potential drugs or lead structures, belonging to 7-membered N-heterocycles, are synthetic scaffolds, this report also reveals different and efficient metal-free cascade approaches useful to synthesize both simple azepane or azepine-containing congeners and those of oligocyclic structures. Stereochemistry of azepane/azepine fused systems, in view of biological data and binding with the targets, is discussed. Apart from the approved drugs, we compare advances in SAR studies of 7-membered N-heterocycles (mainly from 2018 to 2023), whereas the related synthetic part concerning various domino strategies is focused on the last ten years.
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Affiliation(s)
- Aleksandra Leśniewska
- 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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2
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Hazra A, Ghosh A, Yadav N, Banerjee P. Organocatalytic (3+3)-cycloaddition of ortho-substituted phenyl nitrones with aryl cyclopropane carbaldehydes: a facile access to enantioenriched 1,2-oxazinanes. Chem Commun (Camb) 2023; 59:11133-11136. [PMID: 37650130 DOI: 10.1039/d3cc02877a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
The first asymmetric (3+3)-cycloaddition of ortho-substituted phenyl nitrones with aryl cyclopropane carbaldehydes has been demonstrated by secondary amine catalysts. While the other ortho-substituents gave 1,2-oxazinanes, ortho-hydroxy ones provided a novel class of tetrahydrochromeno-1,2-oxazine cores via rare 1,3-aryl migration, followed by cyclization. An unusual type of asymmetric approach was also recognized.
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Affiliation(s)
- Arijit Hazra
- Lab no-406, Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab-140001, India.
| | - Asit Ghosh
- Lab no-406, Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab-140001, India.
| | - Neeraj Yadav
- Lab no-406, Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab-140001, India.
| | - Prabal Banerjee
- Lab no-406, Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab-140001, India.
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3
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Hazra A, Dey R, Kushwaha A, Dhilip Kumar TJ, Banerjee P. Organocatalytic Activation of Donor-Acceptor Cyclopropanes: A Tandem (3 + 3)-Cycloaddition/Aryl Migration toward the Synthesis of Enantioenriched Tetrahydropyridazines. Org Lett 2023; 25:5470-5475. [PMID: 37459204 DOI: 10.1021/acs.orglett.3c01804] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
An organocatalytic enantioselective (3 + 3)-cycloaddition reaction of racemic cyclopropane carbaldehydes and aryl hydrazones has been demonstrated for the first time. A wide range of enantioenriched tetrahydropyridazines with an exocyclic double bond were obtained with moderate to good yields and good to excellent enantiomeric excesses. Mechanistic investigations hinted toward a matched/mismatched kinetic resolution, and control experiments and DFT calculations unveiled that 1,3-aryl migration was concerted and intramolecular and proceeds via a four-membered transition state.
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Affiliation(s)
- Arijit Hazra
- Lab no- 406, Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab-140001, India
| | - Raghunath Dey
- Lab no- 406, Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab-140001, India
| | - Apoorv Kushwaha
- Quantum Dynamics Lab, Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab-140001, India
| | - T J Dhilip Kumar
- Quantum Dynamics Lab, Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab-140001, India
| | - Prabal Banerjee
- Lab no- 406, Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab-140001, India
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4
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Vartanova AE, Levina II, Ratmanova NK, Andreev IA, Ivanova OA, Trushkov IV. Ambident reactivity of 5-aminopyrazoles towards donor-acceptor cyclopropanes. Org Biomol Chem 2022; 20:7795-7802. [PMID: 36148530 DOI: 10.1039/d2ob01490d] [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
Lewis acid-catalysed reactions of donor-acceptor cyclopropanes with 1,3-disubstituted 5-aminopyrazoles were investigated. Under catalysis with gallium(III) chloride, products of the three-membered ring opening via a nucleophilic attack of the exocyclic amino group were obtained in a chemoselective manner. Oppositely, in the presence of scandium(III) triflate, products of either N-alkylation or C(4)-alkylation, or a mixture of both were formed. The products of the C(4) alkylation were transformed in one step into tetrahydropyrazolo[3,4-b]azepines that are attractive for medicinal chemistry and pharmacology.
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Affiliation(s)
- Anna E Vartanova
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky pr. 47, Moscow 119334, Russian Federation.
| | - Irina I Levina
- N. M. Emanuel Institute of Biochemical Physics Russian Academy of Sciences, Kosygina 4, Moscow 119334, Russian Federation
| | - Nina K Ratmanova
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky pr. 47, Moscow 119334, Russian Federation. .,Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Samory Mashela 1, Moscow 117997, Russian Federation
| | - Ivan A Andreev
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky pr. 47, Moscow 119334, Russian Federation. .,Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Samory Mashela 1, Moscow 117997, Russian Federation
| | - Olga A Ivanova
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky pr. 47, Moscow 119334, Russian Federation. .,Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow, 119991, Russian Federation
| | - Igor V Trushkov
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky pr. 47, Moscow 119334, Russian Federation.
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5
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Tang P, Wei YY, Wen L, Ma HJ, Yang Y, Jiang Y. MgI 2-Catalyzed Nucleophilic Ring-Opening Reactions of Donor-Acceptor Cyclopropanes with Indoline-2-thiones. J Org Chem 2022; 87:10890-10901. [PMID: 35918174 DOI: 10.1021/acs.joc.2c01179] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
MgI2-catalyzed nucleophilic ring-opening reactions of donor-acceptor cyclopropanes with indoline-2-thiones as easy-to-handle sulfur nucleophiles were investigated. A series of functionalized γ-indolylthio butyric acid derivatives were synthesized in good to excellent yields under mild reaction conditions. Furthermore, the thioether functionalized ring-opening products could be transformed to sulfone and methionine analogues.
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Affiliation(s)
- Pan Tang
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
| | - You-Yuan Wei
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
| | - Long Wen
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
| | - Hao-Jie Ma
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
| | - Yi Yang
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
| | - Yan Jiang
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
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6
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Kaur N, Kumar P, Dutt S, Banerjee P. Accessing Complex Tetrahydrofurobenzo-Pyran/Furan Scaffolds via Lewis-Acid Catalyzed Bicyclization of Cyclopropane Carbaldehydes with Quinone Methides/Esters. J Org Chem 2022; 87:7905-7918. [PMID: 35658458 DOI: 10.1021/acs.joc.2c00566] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Herein, we report a straightforward one-pot synthesis of tetrahydrofurobenzopyran and tetrahydrofurobenzofuran systems via an in situ ring-expansion of the cyclopropane carbaldehydes followed by a [2 + n] cycloaddition with the quinone derivatives. The transformation not only unveils a new reaction mode of cyclopropane carbaldehydes with quinone methides/esters, but also promotes a step-efficient diastereoselective route to the sophisticatedly fused oxygen tricycles that can be further dehydrogenated to access the valued dihydro-2H-furo[2,3-b]chromene frameworks.
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Affiliation(s)
- Navpreet Kaur
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Pankaj Kumar
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Shiv Dutt
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Prabal Banerjee
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
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7
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Kumar P, Kaur N, Kumar R, Banerjee P. α ,β-Unsaturated Carbonyls for One-Pot Transition-Metal-Free Access to 3,6-Dihydro-2 H-pyrans. J Org Chem 2022; 87:7167-7178. [PMID: 35579030 DOI: 10.1021/acs.joc.2c00379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient protocol has been developed for accessing mono-, di-, and trisubstituted 3,6-dihydro-2H-pyran derivatives by simply subjecting α,β-unsaturated carbonyls to the carefully optimized Corey-Chaykovsky reaction conditions. The strategy provides selectively substituted dihydropyran derivatives in good to excellent yields with a broad substrate scope under very mild reaction conditions. Easy transformation of the final 3,6-dihydro-2H-pyran to the valued 5,6-dihydro-2H-pyran-2-one and tetrahydro-2H-pyran derivatives expanded the scope of this methodology to diverse oxacycles. Further, the developed strategy also found application in a two-step route to racemic goniothalamin, which is widely studied for its cytotoxic behavior.
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Affiliation(s)
- Pankaj Kumar
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Navpreet Kaur
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Rakesh Kumar
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Prabal Banerjee
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
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8
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Taily IM, Saha D, Banerjee P. Aza-Oxyallyl Cation Driven 3-Amido Oxetane Rearrangement to 2-Oxazolines: Access to Oxazoline Amide Ethers. J Org Chem 2022; 87:2155-2166. [PMID: 35129349 DOI: 10.1021/acs.joc.1c03108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein, we report a highly facile and unprecedented activation of 3-amido oxetanes to synthesize 2-oxazoline amide ethers using a transient electrophilic aza-oxyallyl cation as an activating as well as an alkylating agent under mild reaction conditions. The aza-oxyallyl cation driven intramolecular rearrangement of 3-amido oxetanes to 2-oxazolines is the hallmark of this transformation and is a new addition to the reactivity profile of aza-oxyallyl cations.
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Affiliation(s)
- Irshad Maajid Taily
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Debarshi Saha
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Prabal Banerjee
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
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9
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Taily IM, Saha D, Banerjee P. Arylcyclopropane yet in its infancy: the challenges and recent advances in its functionalization. Org Biomol Chem 2021; 19:8627-8645. [PMID: 34549770 DOI: 10.1039/d1ob01432c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Electronically unbiased arylcyclopropane functionalization has always been a challenge to organic chemists, and the emergence of donor-acceptor cyclopropanes (DACs) has not only vehemently overshadowed them but still dominates the cyclopropane chemistry. Unlike DACs, the absence of pre-installed functional groups makes it harder for them to activate and participate in a reaction. The field has witnessed considerably slow progress since its inception due to the inherent challenges. There are only a few strategies available to open arylcyclopropanes. Therefore, this work is still in its infancy stage in spite of these materials being one of the earliest known type of cyclopropanes. This review manifests the history, endeavors, and achievements alongside the associated challenges, opportunities, and the need for concerted efforts to accomplish the long-awaited golden age of arylcyclopropanes.
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Affiliation(s)
- Irshad Maajid Taily
- Department of Chemistry, Indian Institute of Technology, Ropar, Nangal Road, Rupnagar, Punjab-140001, India.
| | - Debarshi Saha
- Department of Chemistry, Indian Institute of Technology, Ropar, Nangal Road, Rupnagar, Punjab-140001, India.
| | - Prabal Banerjee
- Department of Chemistry, Indian Institute of Technology, Ropar, Nangal Road, Rupnagar, Punjab-140001, India.
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10
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Pirenne V, Robert EGL, Waser J. Catalytic (3 + 2) annulation of donor-acceptor aminocyclopropane monoesters and indoles. Chem Sci 2021; 12:8706-8712. [PMID: 34257869 PMCID: PMC8246098 DOI: 10.1039/d1sc01127h] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 05/04/2021] [Indexed: 12/16/2022] Open
Abstract
The efficient catalytic activation of donor-acceptor aminocyclopropanes lacking the commonly used diester acceptor is reported here in a (3 + 2) dearomative annulation with indoles. Bench-stable tosyl-protected aminocyclopropyl esters were converted into cycloadducts in 46-95% yields and up to 95 : 5 diastereomeric ratio using catalytic amounts of triethylsilyl triflimide. Tricyclic indoline frameworks containing four stereogenic centers including all-carbon quaternary centers were obtained.
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Affiliation(s)
- Vincent Pirenne
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne Ch-1015 Lausanne Switzerland
| | - Emma G L Robert
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne Ch-1015 Lausanne Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne Ch-1015 Lausanne Switzerland
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11
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Andreev IA, Ratmanova NK, Augustin AU, Ivanova OA, Levina II, Khrustalev VN, Werz DB, Trushkov IV. Protic Ionic Liquid as Reagent, Catalyst, and Solvent: 1-Methylimidazolium Thiocyanate. Angew Chem Int Ed Engl 2021; 60:7927-7934. [PMID: 33433034 PMCID: PMC8048580 DOI: 10.1002/anie.202016593] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Indexed: 02/06/2023]
Abstract
We propose a new concept of the triple role of protic ionic liquids with nucleophilic anions: a) a regenerable solvent, b) a Brønsted acid inducing diverse transformations via general acid catalysis, and c) a source of a nucleophile. The efficiency of this strategy was demonstrated using thiocyanate-based protic ionic liquids for the ring-opening of donor-acceptor cyclopropanes. A wide variety of activated cyclopropanes were found to react with 1-methylimidazolium thiocyanate under mild metal-free conditions via unusual nitrogen attack of the ambident thiocyanate ion on the electrophilic center of the three-membered ring affording pyrrolidine-2-thiones bearing donor and acceptor substituents at the C(5) and C(3) atoms, respectively, in a single time-efficient step. The ability of 1-methylimidazolium thiocyanate to serve as a triplex reagent was exemplarily illustrated by (4+2)-annulation with 1-acyl-2-(2-hydroxyphenyl)cyclopropane, epoxide ring-opening and other organic transformations.
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Affiliation(s)
- Ivan A. Andreev
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and ImmunologySamory Mashela 1117997MoscowRussian Federation
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of SciencesLeninsky pr. 47119991MoscowRussian Federation
| | - Nina K. Ratmanova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and ImmunologySamory Mashela 1117997MoscowRussian Federation
| | - André U. Augustin
- Technische Universität BraunschweigInstitute of Organic ChemistryHagenring 3038106BraunschweigGermany
| | - Olga A. Ivanova
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of SciencesLeninsky pr. 47119991MoscowRussian Federation
- Department of ChemistryLomonosov Moscow State UniversityLeninskie Gory 1–3119991MoscowRussian Federation
| | - Irina I. Levina
- Institute of Biochemical PhysicsRussian Academy of SciencesKosygina 4119334MoscowRussian Federation
| | - Victor N. Khrustalev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of SciencesLeninsky pr. 47119991MoscowRussian Federation
- Faculty of ScienceRUDN UniversityMiklukho-Maklaya 6117198MoscowRussian Federation
| | - Daniel B. Werz
- Technische Universität BraunschweigInstitute of Organic ChemistryHagenring 3038106BraunschweigGermany
| | - Igor V. Trushkov
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and ImmunologySamory Mashela 1117997MoscowRussian Federation
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of SciencesLeninsky pr. 47119991MoscowRussian Federation
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12
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Kaur M, Garg S, Malhi DS, Sohal HS. A Review on Synthesis, Reactions and Biological Properties of Seven Membered Heterocyclic Compounds: Azepine, Azepane, Azepinone. CURR ORG CHEM 2021. [DOI: 10.2174/1385272825999210104222338] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Seven membered heterocyclic Azepine and its derivatives have great pharmacological
and therapeutic implications. In this review, the literature of the last fifty years has
been exploited for the synthesis, reaction, and biological properties of these seven-member
heterocyclic compounds. Most of the mechanisms involved the ring expansion of either five
or six-membered compounds using various methods such as thermally, photo-chemically, and
microwave irradiation. The systematically designed schemes involve the synthesis of different
derivatives of azepine, azepinone, azepane, etc., using similar moieties by various researchers.
However, there is much work yet to be done in the biological section, as it is not
explored and reported in the literature; therefore, N-containing seven-membered heterocycles
still have much scope for the researchers.
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Affiliation(s)
- Manvinder Kaur
- Department of Chemistry, Chandigarh University, Gharuan-140413, Mohali, Punjab, India
| | - Sonali Garg
- Department of Chemistry, Chandigarh University, Gharuan-140413, Mohali, Punjab, India
| | - Dharambeer S. Malhi
- Department of Chemistry, Chandigarh University, Gharuan-140413, Mohali, Punjab, India
| | - Harvinder S. Sohal
- Department of Chemistry, Chandigarh University, Gharuan-140413, Mohali, Punjab, India
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13
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Andreev IA, Ratmanova NK, Augustin AU, Ivanova OA, Levina II, Khrustalev VN, Werz DB, Trushkov IV. Protic Ionic Liquid as Reagent, Catalyst, and Solvent: 1‐Methylimidazolium Thiocyanate. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202016593] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Ivan A. Andreev
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology Samory Mashela 1 117997 Moscow Russian Federation
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences Leninsky pr. 47 119991 Moscow Russian Federation
| | - Nina K. Ratmanova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology Samory Mashela 1 117997 Moscow Russian Federation
| | - André U. Augustin
- Technische Universität Braunschweig Institute of Organic Chemistry Hagenring 30 38106 Braunschweig Germany
| | - Olga A. Ivanova
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences Leninsky pr. 47 119991 Moscow Russian Federation
- Department of Chemistry Lomonosov Moscow State University Leninskie Gory 1–3 119991 Moscow Russian Federation
| | - Irina I. Levina
- Institute of Biochemical Physics Russian Academy of Sciences Kosygina 4 119334 Moscow Russian Federation
| | - Victor N. Khrustalev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences Leninsky pr. 47 119991 Moscow Russian Federation
- Faculty of Science RUDN University Miklukho-Maklaya 6 117198 Moscow Russian Federation
| | - Daniel B. Werz
- Technische Universität Braunschweig Institute of Organic Chemistry Hagenring 30 38106 Braunschweig Germany
| | - Igor V. Trushkov
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology Samory Mashela 1 117997 Moscow Russian Federation
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences Leninsky pr. 47 119991 Moscow Russian Federation
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14
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Kumar P, Kumar R, Banerjee P. Accessing Dihydro-1,2-oxazine via Cloke–Wilson-Type Annulation of Cyclopropyl Carbonyls: Application toward the Diastereoselective Synthesis of Pyrrolo[1,2-b][1,2]oxazine. J Org Chem 2020; 85:6535-6550. [DOI: 10.1021/acs.joc.0c00531] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Pankaj Kumar
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab 140001, India
| | - Rakesh Kumar
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab 140001, India
| | - Prabal Banerjee
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab 140001, India
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15
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Singh P, Varshnaya RK, Dey R, Banerjee P. Donor–Acceptor Cyclopropanes as an Expedient Building Block Towards the Construction of Nitrogen‐Containing Molecules: An Update. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901332] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Priyanka Singh
- Department of ChemistryIndian Institute of Technology Ropar Nangal Road Rupnagar, Punjab 140001 India
| | - Rohit Kumar Varshnaya
- Department of ChemistryIndian Institute of Technology Ropar Nangal Road Rupnagar, Punjab 140001 India
| | - Raghunath Dey
- Department of ChemistryIndian Institute of Technology Ropar Nangal Road Rupnagar, Punjab 140001 India
| | - Prabal Banerjee
- Department of ChemistryIndian Institute of Technology Ropar Nangal Road Rupnagar, Punjab 140001 India
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16
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Dey R, Rajput S, Banerjee P. Metal-free domino Cloke-Wilson rearrangement-hydration-dimerization of cyclopropane carbaldehydes: A facile access to oxybis(2-aryltetrahydrofuran) derivatives. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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17
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Singh P, Kaur N, Banerjee P. Regioselective Brønsted Acid-Catalyzed Annulation of Cyclopropane Aldehydes with N'-Aryl Anthranil Hydrazides: Domino Construction of Tetrahydropyrrolo[1,2- a]quinazolin-5(1 H)ones. J Org Chem 2020; 85:3393-3406. [PMID: 31958951 DOI: 10.1021/acs.joc.9b03170] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A highly regioselective synthesis of tetrahydropyrrolo[1,2-a]quinazolin-5(1H)one derivatives was achieved by reacting cyclopropane aldehydes with N'-aryl anthranil hydrazides in the presence of p-toluene sulfonic acid (PTSA). The transformation involves domino imine formation and intramolecular cyclization to form 2-arylcyclopropyl-2,3-dihydroquinolin-4(1H)-one, followed by nucleophilic ring opening of the cyclopropyl ring to form desired tetrahydropyrrolo[1,2-a]quinazolin-5(1H)one in good to excellent yield with complete regioselectivity. This protocol tolerates a great variety of functional groups and thus provides a simple and step-efficient method for pyrroloquinazolinone synthesis.
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Affiliation(s)
- Priyanka Singh
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab 140001, India
| | - Navpreet Kaur
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab 140001, India
| | - Prabal Banerjee
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab 140001, India
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18
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Dai L, Ye S. Photo/N-Heterocyclic Carbene Co-catalyzed Ring Opening and γ-Alkylation of Cyclopropane Enal. Org Lett 2020; 22:986-990. [PMID: 31951136 DOI: 10.1021/acs.orglett.9b04533] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An unprecedented photo/NHC-co-catalyzed ring-opening C-C bond cleavage of cyclopropane enal and the following γ-alkylation with a halogenated compound via radicals were established, affording the corresponding γ-alkylated α,β-unsaturated esters in moderate to good yields.
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Affiliation(s)
- Lei Dai
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China.,University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Song Ye
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China.,University of Chinese Academy of Sciences , Beijing 100049 , China
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19
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Wang S, Guillot R, Carpentier J, Sarazin Y, Bour C, Gandon V, Lebœuf D. Synthesis of Bridged Tetrahydrobenzo[
b
]azepines and Derivatives through an Aza‐Piancatelli Cyclization/Michael Addition Sequence. Angew Chem Int Ed Engl 2019; 59:1134-1138. [DOI: 10.1002/anie.201911761] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 10/29/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Shengdong Wang
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182 Université Paris-Sud Université Paris-Saclay Bâtiment 420 91405 Orsay France
| | - Régis Guillot
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182 Université Paris-Sud Université Paris-Saclay Bâtiment 420 91405 Orsay France
| | | | - Yann Sarazin
- Univ Rennes CNRS UMR 6226 ISCR (Institut des Sciences Chimiques de Rennes) 35000 Rennes France
| | - Christophe Bour
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182 Université Paris-Sud Université Paris-Saclay Bâtiment 420 91405 Orsay France
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182 Université Paris-Sud Université Paris-Saclay Bâtiment 420 91405 Orsay France
| | - David Lebœuf
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182 Université Paris-Sud Université Paris-Saclay Bâtiment 420 91405 Orsay France
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20
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Wang S, Guillot R, Carpentier J, Sarazin Y, Bour C, Gandon V, Lebœuf D. Synthesis of Bridged Tetrahydrobenzo[
b
]azepines and Derivatives through an Aza‐Piancatelli Cyclization/Michael Addition Sequence. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201911761] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Shengdong Wang
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182 Université Paris-Sud Université Paris-Saclay Bâtiment 420 91405 Orsay France
| | - Régis Guillot
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182 Université Paris-Sud Université Paris-Saclay Bâtiment 420 91405 Orsay France
| | | | - Yann Sarazin
- Univ Rennes CNRS UMR 6226 ISCR (Institut des Sciences Chimiques de Rennes) 35000 Rennes France
| | - Christophe Bour
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182 Université Paris-Sud Université Paris-Saclay Bâtiment 420 91405 Orsay France
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182 Université Paris-Sud Université Paris-Saclay Bâtiment 420 91405 Orsay France
| | - David Lebœuf
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182 Université Paris-Sud Université Paris-Saclay Bâtiment 420 91405 Orsay France
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