1
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Chen J, Wang N, Qi C, Chang J, Wang XN. Brønsted acid catalyzed Ficini [2 + 2] cycloaddition of ynamides with enones. Org Biomol Chem 2024; 22:4264-4268. [PMID: 38742913 DOI: 10.1039/d4ob00470a] [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
Herein, we describe a novel metal-free Brønsted acid-catalyzed Ficini [2 + 2] cycloaddition of ynamides with enones under mild reaction conditions, leading to the formation of various cyclobutenamides in generally good to excellent yields within short reaction times. This work represents the first example of ynamides involved in a nonmetal-catalyzed [2 + 2] cycloaddition with enones.
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Affiliation(s)
- Jinyue Chen
- Pingyuan Laboratory, State Key Laboratory of Antiviral Drugs, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | - Nanfang Wang
- Pingyuan Laboratory, State Key Laboratory of Antiviral Drugs, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | - Chaofan Qi
- Pingyuan Laboratory, State Key Laboratory of Antiviral Drugs, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | - Junbiao Chang
- Pingyuan Laboratory, State Key Laboratory of Antiviral Drugs, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | - Xiao-Na Wang
- Pingyuan Laboratory, State Key Laboratory of Antiviral Drugs, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, P. R. China.
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2
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Yang P, Jia Q, Song S, Huang X. [2 + 2]-Cycloaddition-derived cyclobutane natural products: structural diversity, sources, bioactivities, and biomimetic syntheses. Nat Prod Rep 2023. [DOI: 10.1039/d2np00034b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This review summarizes the structural diversity, bioactivities, and biomimetic synthesis of [2 + 2]-type cyclobutane natural products, along with discussion of their biosynthesis, stereochemical analysis, racemic occurrence, and biomimetic synthesis.
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Affiliation(s)
- Peiyuan Yang
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development, Liaoning Province; Engineering Research Center of Natural Medicine Active Molecule Research & Development, Liaoning Province; Key Laboratory of Natural Bioactive Compounds Discovery & Modification, Shenyang; School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China
| | - Qi Jia
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development, Liaoning Province; Engineering Research Center of Natural Medicine Active Molecule Research & Development, Liaoning Province; Key Laboratory of Natural Bioactive Compounds Discovery & Modification, Shenyang; School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China
| | - Shaojiang Song
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development, Liaoning Province; Engineering Research Center of Natural Medicine Active Molecule Research & Development, Liaoning Province; Key Laboratory of Natural Bioactive Compounds Discovery & Modification, Shenyang; School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China
| | - Xiaoxiao Huang
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development, Liaoning Province; Engineering Research Center of Natural Medicine Active Molecule Research & Development, Liaoning Province; Key Laboratory of Natural Bioactive Compounds Discovery & Modification, Shenyang; School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China
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3
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Babu SA, Aggarwal Y, Patel P, Tomar R. Diastereoselective palladium-catalyzed functionalization of prochiral C(sp 3)-H bonds of aliphatic and alicyclic compounds. Chem Commun (Camb) 2022; 58:2612-2633. [PMID: 35113087 DOI: 10.1039/d1cc05649b] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We highlight the reported developments of the palladium-catalyzed C-H activation and functionalization of the inactive/unreactive prochiral C(sp3)-H bonds of aliphatic and alicyclic compounds. There exist numerous classical methods for generating contiguous stereogenic centers in a compound with a high degree of stereocontrol. Along similar lines, the Pd(II)-catalyzed, directing group-aided functionalization of inactive prochiral/diastereotopic C(sp3)-H bonds have been exploited to accomplish the stereoselective construction of stereo-arrays in organic compounds. We present a concise discussion on how specific strategies consisting of Pd(II)-catalyzed, directing group-aided C(sp3)-H functionalization have been utilized to generate two or more stereogenic centers in aliphatic and alicyclic compounds.
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Affiliation(s)
- Srinivasarao Arulananda Babu
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306, India.
| | - Yashika Aggarwal
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306, India.
| | - Pooja Patel
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306, India.
| | - Radha Tomar
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306, India.
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4
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Abstract
The enantioselective [3 + 1]-cycloaddition of two structurally different diazo compounds has been achieved using chiral bisoxazoline copper(I) complexes as a catalyst, providing a novel route for the synthesis of cyclobutenes containing a quaternary stereocenter. Typically, this reaction represents the first example of asymmetric cross-electrophile coupling of two diazo substrates via carbene discrimination.
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Affiliation(s)
- Yong Xu
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
| | - Zhen Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
| | - Jiangtao Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
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5
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Biletskyi B, Colonna P, Masson K, Parrain JL, Commeiras L, Chouraqui G. Small rings in the bigger picture: ring expansion of three- and four-membered rings to access larger all-carbon cyclic systems. Chem Soc Rev 2021; 50:7513-7538. [PMID: 34002179 DOI: 10.1039/d0cs01396j] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The release of the inherent ring strain of cyclobutane and cyclopropane derivatives allows a rapid build-up of molecular complexity. This review highlights the state-of-the-art of the ring expansions of three- and four-membered cycles and is organised by types of reactions with emphasis on the reaction mechanisms. Selected examples are discussed to illustrate the synthetic potential of this elegant synthetic tool.
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Affiliation(s)
- Bohdan Biletskyi
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France.
| | - Pierre Colonna
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France.
| | - Kévin Masson
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France.
| | - Jean-Luc Parrain
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France.
| | - Laurent Commeiras
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France.
| | - Gaëlle Chouraqui
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France.
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6
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Supramolecular construction of a cyclobutane ring system with four different substituents in the solid state. Commun Chem 2021; 4:60. [PMID: 36697559 PMCID: PMC9814370 DOI: 10.1038/s42004-021-00493-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 03/16/2021] [Indexed: 01/28/2023] Open
Abstract
Methods to form cyclobutane rings by an intermolecular [2 + 2] cross-photoreaction (CPR) with four different substituents are rare. These reactions are typically performed in the liquid phase, involve multiple steps, and generate product mixtures. Here, we report a CPR that generates a cyclobutane ring with four different aryl substituents. The CPR occurs quantitatively, without side products, and without a need for product purification. Generally, we demonstrate how face-to-face stacking interactions of aromatic rings can be exploited in the process of cocrystallization and the field of crystal engineering to stack and align unsymmetrical alkenes in CPRs to afford chiral cyclobutanes with up to four different aryl groups via binary cocrystals. Overall, we expect the process herein to be useful to generate chiral carbon scaffolds, which is important given the presence of four-membered carbocyclic rings as structural units in biological compounds and materials science.
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7
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Zhang S, Tang A, Xie R, Zhao Z, Yao J, Miao M. Gold Catalysis Enabling Furan-Fused Cyclobutenes as a Platform toward Cross Cycloadditions. Org Lett 2021; 23:3701-3705. [PMID: 33904750 DOI: 10.1021/acs.orglett.1c01079] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The inherently strained furan-fused cyclobutenes, in situ generated via cycloisomerizations of allenyl ketones bearing cyclopropyl moiety under gold catalysis, have been utilized as reactive building blocks toward cross cycloadditions. The [4 + 2] and [3 + 2] annulations of these species with benzo[c]isoxazoles and N-iminoquinazolinium ylides furnish various three-dimensional cyclobutane-bridged polyheterocycles in good yields. A wide range of typically electron-deficient 1,3-dienes, heterodienes, and 1,3-dipoles can trap furan-fused cyclobutenes to afford several polycyclic architectures.
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Affiliation(s)
- Shouzhi Zhang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P. R. China
| | - Aijie Tang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P. R. China
| | - Ruyu Xie
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P. R. China
| | - Zhiqiang Zhao
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P. R. China
| | - Jinzhong Yao
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, People's Republic of China
| | - Maozhong Miao
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P. R. China
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8
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Abubakar MB, Usman D, El-Saber Batiha G, Cruz-Martins N, Malami I, Ibrahim KG, Abubakar B, Bello MB, Muhammad A, Gan SH, Dabai AI, Alblihed M, Ghosh A, Badr RH, Thangadurai D, Imam MU. Natural Products Modulating Angiotensin Converting Enzyme 2 (ACE2) as Potential COVID-19 Therapies. Front Pharmacol 2021; 12:629935. [PMID: 34012391 PMCID: PMC8126690 DOI: 10.3389/fphar.2021.629935] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 03/08/2021] [Indexed: 01/08/2023] Open
Abstract
The 2019 coronavirus disease (COVID-19) is a potentially fatal multisystemic infection caused by the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). Currently, viable therapeutic options that are cost effective, safe and readily available are desired, but lacking. Nevertheless, the pandemic is noticeably of lesser burden in African and Asian regions, where the use of traditional herbs predominates, with such relationship warranting a closer look at ethnomedicine. From a molecular viewpoint, the interaction of SARS-CoV-2 with angiotensin converting enzyme 2 (ACE2) is the crucial first phase of COVID-19 pathogenesis. Here, we review plants with medicinal properties which may be implicated in mitigation of viral invasion either via direct or indirect modulation of ACE2 activity to ameliorate COVID-19. Selected ethnomedicinal plants containing bioactive compounds which may prevent and mitigate the fusion and entry of the SARS-CoV-2 by modulating ACE2-associated up and downstream events are highlighted. Through further experimentation, these plants could be supported for ethnobotanical use and the phytomedicinal ligands could be potentially developed into single or combined preventive therapeutics for COVID-19. This will benefit researchers actively looking for solutions from plant bioresources and help lessen the burden of COVID-19 across the globe.
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Affiliation(s)
- Murtala Bello Abubakar
- Department of Physiology, Faculty of Basic Medical Sciences, College of Health Sciences, Usmanu Danfodiyo University, Sokoto, Nigeria
- Centre for Advanced Medical Research and Training, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - Dawoud Usman
- Department of Physiology, Faculty of Basic Medical Sciences, College of Health Sciences, Usmanu Danfodiyo University, Sokoto, Nigeria
- Centre for Advanced Medical Research and Training, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour, Egypt
| | - Natália Cruz-Martins
- Faculty of Medicine, University of Porto, Porto, Portugal
- Institute for Research and Innovation in Health (i3S), University of Porto, Porto, Portugal
- Laboratory of Neuropsychophysiology, Faculty of Psychology and Education Sciences, University of Porto, Porto, Portugal
| | - Ibrahim Malami
- Centre for Advanced Medical Research and Training, Usmanu Danfodiyo University, Sokoto, Nigeria
- Department of Pharmacognosy and Ethnopharmacy, Faculty of Pharmaceutical Sciences, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - Kasimu Ghandi Ibrahim
- Department of Physiology, Faculty of Basic Medical Sciences, College of Health Sciences, Usmanu Danfodiyo University, Sokoto, Nigeria
- Centre for Advanced Medical Research and Training, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - Bilyaminu Abubakar
- Centre for Advanced Medical Research and Training, Usmanu Danfodiyo University, Sokoto, Nigeria
- Department of Pharmacology and Toxicology, Faculty of Pharmaceutical Sciences, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - Muhammad Bashir Bello
- Centre for Advanced Medical Research and Training, Usmanu Danfodiyo University, Sokoto, Nigeria
- Department of Veterinary Microbiology, Faculty of Veterinary Medicine, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - Aliyu Muhammad
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Kaduna Sate, Nigeria
| | - Siew Hua Gan
- School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia
| | - Aliyu Ibrahim Dabai
- Centre for Advanced Medical Research and Training, Usmanu Danfodiyo University, Sokoto, Nigeria
- Department of Microbiology, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - M Alblihed
- Department of Microbiology, College of Medicine, Taif University, Taif, Saudi Arabia
| | - Arabinda Ghosh
- Microbiology Division, Department of Botany, Gauhati University, Guwahati, India
| | - Reem H. Badr
- Department of Botany and Microbiology, Faculty of Science, Alexandria University, Alexandria, Egypt
| | | | - Mustapha Umar Imam
- Centre for Advanced Medical Research and Training, Usmanu Danfodiyo University, Sokoto, Nigeria
- Department of Medical Biochemistry, Faculty of Basic Medical Sciences, College of Health Sciences, Usmanu Danfodiyo University, Sokoto, Nigeria
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9
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Ni Q, Song X, Png CW, Zhang Y, Zhao Y. Access to substituted cyclobutenes by tandem [3,3]-sigmatropic rearrangement/[2 + 2] cycloaddition of dipropargylphosphonates under Ag/Co relay catalysis. Chem Sci 2020; 11:12329-12335. [PMID: 34094441 PMCID: PMC8162479 DOI: 10.1039/d0sc02972f] [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] [Indexed: 11/21/2022] Open
Abstract
We present herein an unconventional tandem [3,3]-sigmatropic rearrangement/[2 + 2] cycloaddition of simple dipropargylphosphonates to deliver a range of bicyclic polysubstituted cyclobutenes and cyclobutanes under Ag/Co relay catalysis. An interesting switch from allene–allene to allene–alkyne cycloaddition was observed based on the substitution of the substrates, which further diversified the range of compounds accessible from this practical method. Significantly, preliminary biological screening of these new compounds identified promising candidates as suppressors of cellular proliferation. In situ generation of allenes through [3,3]-sigmatropic rearrangement of propargylphosphonates. Divergent allene–allene or allene–alkyne cycloaddition by Ag/Co relay catalysis. Products as promising suppressors of cellular proliferation.![]()
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Affiliation(s)
- Qijian Ni
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University Wuhu 241002 Anhui China.,Department of Chemistry, National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Xiaoxiao Song
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University Wuhu 241002 Anhui China.,Department of Chemistry, National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Chin Wen Png
- Centre for Life Sciences, National University of Singapore #03-09, 28 Medical Drive 117456 Singapore
| | - Yongliang Zhang
- Centre for Life Sciences, National University of Singapore #03-09, 28 Medical Drive 117456 Singapore
| | - Yu Zhao
- Department of Chemistry, National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore .,Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University Binhai New City Fuzhou 350207 China
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10
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Gutierrez-Villagomez JM, Campos-García T, Molina-Torres J, López MG, Vázquez-Martínez J. Alkamides and Piperamides as Potential Antivirals against the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). J Phys Chem Lett 2020; 11:8008-8016. [PMID: 32840378 PMCID: PMC7485283 DOI: 10.1021/acs.jpclett.0c01685] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 08/25/2020] [Indexed: 05/08/2023]
Abstract
The pandemic caused by the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) has quickly spread globally, infecting millions and killing hundreds of thousands of people. Herein, to identify potential antiviral agents, 97 natural amide-like compounds known as alkamides and piperamides were tested against SARS-CoV-2 main protease (Mpro) and RNA-dependent RNA polymerase (RdRp), and the human angiotensin-converting enzyme 2 (ACE2) using molecular docking and molecular dynamics simulations. The docking results showed that alkamides and dimeric piperamides from Piper species have a high binding affinity and potential antiviral activity against SARS-CoV-2. The absorption, distribution, metabolism, and excretion (ADME) profile and Lipinski's rule of five showed that dimeric piperamides have druglikeness potential. The molecular dynamics results showed that pipercyclobutanamide B forms a complex with Mpro at a similar level of stability than N3-I. Our overall results indicate that alkamides and piperamides, and specifically pipercyclobutanamide B, should be further studied as compounds with SARS-CoV-2 antiviral properties.
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Affiliation(s)
- Juan Manuel Gutierrez-Villagomez
- Centre Eau Terre Environnement,
Institut National de la Recherche Scientifique
(INRS), Québec City, Quebec G1K 9A9,
Canada
- Tecnológico Nacional
de México/ITS Irapuato, 36821 Irapuato,
Guanajuato, Mexico
| | - Tonatiu Campos-García
- Departamento de
Biotecnología y Bioquímica,
Centro de Investigación y de Estudios
Avanzados del IPN (CINVESTAV) Unidad Irapuato,
36824 Irapuato, Guanajuato, Mexico
| | - Jorge Molina-Torres
- Departamento de
Biotecnología y Bioquímica,
Centro de Investigación y de Estudios
Avanzados del IPN (CINVESTAV) Unidad Irapuato,
36824 Irapuato, Guanajuato, Mexico
| | - Mercedes G. López
- Departamento de
Biotecnología y Bioquímica,
Centro de Investigación y de Estudios
Avanzados del IPN (CINVESTAV) Unidad Irapuato,
36824 Irapuato, Guanajuato, Mexico
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11
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Jain S, Vanka K. The Effect of Solvent-Substrate Noncovalent Interactions on the Diastereoselectivity in the Intramolecular Carbonyl-Ene and the Staudinger [2 + 2] Cycloaddition Reactions. J Phys Chem A 2020; 124:8019-8028. [PMID: 32894951 DOI: 10.1021/acs.jpca.0c05738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Noncovalent interactions (NCIs) have been identified as important contributing factors for determining selectivity in organic transformations. However, cases where NCIs between solvents and substrates are responsible for a major extent for determining selectivity are rare. The current computational study with density functional theory identifies two important transformations where this is the case: the intramolecular carbonyl-ene reaction and the Staudinger [2 + 2] cycloaddition reaction. In both cases, the role of explicit solvent molecules interacting noncovalently with the substrate has been taken into account. Calculations indicate that the diastereomeric ratio would be 95.0:5.0 for the formation of tricyclic tetrahydrofuran diastereomers via the intramolecular carbonyl-ene reaction and 94.0:6.0 for the formation of the triflone diastereomers via the Staudinger [2 + 2] cycloaddition reaction, which corroborates with the experiment. Interestingly, in both the cases, the calculations indicate that noninclusion of explicit solvent molecules would lead to only a small difference between the competing transition states, which leads to the conclusion that solvent-substrate NCIs are the major cause for diastereoselectivity in both the cases considered.
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Affiliation(s)
- Shailja Jain
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Kumar Vanka
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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12
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Li J, Gao K, Bian M, Ding H. Recent advances in the total synthesis of cyclobutane-containing natural products. Org Chem Front 2020. [DOI: 10.1039/c9qo01178a] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Recent developments of strategies on the construction of cyclobutanes and their application in complex natural product synthesis are discussed.
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Affiliation(s)
- Jinshan Li
- Institute of Medicinal Natural Products
- School of Advanced Study
- Taizhou University
- Taizhou 318000
- P. R. China
| | - Kai Gao
- Institute of Medicinal Natural Products
- School of Advanced Study
- Taizhou University
- Taizhou 318000
- P. R. China
| | - Ming Bian
- School of Chemistry and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai 201418
- P.R. China
| | - Hanfeng Ding
- Institute of Medicinal Natural Products
- School of Advanced Study
- Taizhou University
- Taizhou 318000
- P. R. China
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13
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Pirenne V, Traboulsi I, Rouvière L, Lusseau J, Massip S, Bassani DM, Robert F, Landais Y. p-Anisaldehyde-Photosensitized Sulfonylcyanation of Chiral Cyclobutenes: Enantioselective Access to Cyclic and Acyclic Systems Bearing All-Carbon Quaternary Stereocenters. Org Lett 2019; 22:575-579. [DOI: 10.1021/acs.orglett.9b04345] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Vincent Pirenne
- CNRS, Bordeaux
INP, ISM, UMR 5255, University of Bordeaux, F-33400 Talence, France
| | - Iman Traboulsi
- CNRS, Bordeaux
INP, ISM, UMR 5255, University of Bordeaux, F-33400 Talence, France
| | - Lisa Rouvière
- CNRS, Bordeaux
INP, ISM, UMR 5255, University of Bordeaux, F-33400 Talence, France
| | - Jonathan Lusseau
- CNRS, Bordeaux
INP, ISM, UMR 5255, University of Bordeaux, F-33400 Talence, France
| | - Stéphane Massip
- European Institute of Chemistry and Biology (IECB), University of Bordeaux, 2 Rue Robert Escarpit, 33600 Pessac, France
| | - Dario M. Bassani
- CNRS, Bordeaux
INP, ISM, UMR 5255, University of Bordeaux, F-33400 Talence, France
| | - Frédéric Robert
- CNRS, Bordeaux
INP, ISM, UMR 5255, University of Bordeaux, F-33400 Talence, France
| | - Yannick Landais
- CNRS, Bordeaux
INP, ISM, UMR 5255, University of Bordeaux, F-33400 Talence, France
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14
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Jha KK, Dutta S, Sar S, Sen S, Munshi P. Harnessing sun for catalyst and sensitizer free regio- and stereo-selective [2+2] cycloaddition. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.10.065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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15
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Kashyap A, Bokosike TK, Bhuvanesh N, Pattabiraman M. Stereo- and regioselective photocycloaddition of extended alkenes using γ-cyclodextrin. Org Biomol Chem 2018; 16:6870-6875. [PMID: 30229798 PMCID: PMC6215711 DOI: 10.1039/c8ob01966e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photoexcitation of dibenzalacetones (1a-d) in homogeneous media and solid state yields a mixture of products with poor conversions. Irradiation of the reactants complexed to γ-cyclodextrin predominantly affords a single dimer (syn adduct 6) despite the possibility for several monomeric and dimeric products. High selectivity in the cavitand-mediated reaction along with the structural characterization of the inclusion complex provides insight into the supramolecular interactions that drive the self-assembly of the host-guest system.
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Affiliation(s)
- Akshay Kashyap
- Department of Chemistry, University of Nebraska Kearney, NE-68845, USA.
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16
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Affiliation(s)
| | - Giuseppe Zanoni
- Dipartimento di Chimica; Università di Pavia; Viale Taramelli 10 27100 Pavia Italy
| | - Debabrata Maiti
- Department of Chemistry; IIT Bombay; Powai Mumbai 400076 India
- Dipartimento di Chimica; Università di Pavia; Viale Taramelli 10 27100 Pavia Italy
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17
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Throup A, Patterson LH, Sheldrake HM. Intramolecular thermal stepwise [2 + 2] cycloadditions: investigation of a stereoselective synthesis of [n.2.0]-bicyclolactones. Org Biomol Chem 2018; 14:9554-9559. [PMID: 27722445 PMCID: PMC5066561 DOI: 10.1039/c6ob01661h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new method for the synthesis of highly functionalised cyclobutenes.
Fused cyclobutanes are found in a range of natural products and formation of these motifs in a straightforward and easy manner represents an interesting synthetic challenge. To this end we investigated an intramolecular variant of the thermal enamine [2 + 2] cyclisation, developing a diastereoselective intramolecular enamine [2 + 2] cyclisation furnishing δ lactone and lactam fused cyclobutenes in good yield and excellent diastereoselectivity.
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Affiliation(s)
- Adam Throup
- Institute of Cancer Therapeutics, University of Bradford, Bradford, BD7 1DP, UK.
| | - Laurence H Patterson
- Institute of Cancer Therapeutics, University of Bradford, Bradford, BD7 1DP, UK.
| | - Helen M Sheldrake
- Institute of Cancer Therapeutics, University of Bradford, Bradford, BD7 1DP, UK.
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18
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Wang M, Lu P. Catalytic approaches to assemble cyclobutane motifs in natural product synthesis. Org Chem Front 2018. [DOI: 10.1039/c7qo00668c] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New strategies based on transition-metal catalysis or organocatalysis have provided new perspectives into the total synthesis of cyclobutane-containing natural products.
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Affiliation(s)
- Meng Wang
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Ping Lu
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
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19
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Antonsen S, Østby RB, Stenstrøm Y. Naturally Occurring Cyclobutanes: Their Biological Significance and Synthesis. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2018. [DOI: 10.1016/b978-0-444-64057-4.00001-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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20
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García-Morales C, Ranieri B, Escofet I, López-Suarez L, Obradors C, Konovalov AI, Echavarren AM. Enantioselective Synthesis of Cyclobutenes by Intermolecular [2+2] Cycloaddition with Non-C 2 Symmetric Digold Catalysts. J Am Chem Soc 2017; 139:13628-13631. [PMID: 28922911 PMCID: PMC5679663 DOI: 10.1021/jacs.7b07651] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Indexed: 01/12/2023]
Abstract
The enantioselective intermolecular gold(I)-catalyzed [2+2] cycloaddition of terminal alkynes and alkenes has been achieved using non-C2-chiral Josiphos digold(I) complexes as catalysts, by the formation of the monocationic complex. This new approach has been applied to the enantioselective total synthesis of rumphellaone A.
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Affiliation(s)
- Cristina García-Morales
- Institute of Chemical
Research of Catalonia (ICIQ), Barcelona Institute of
Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Beatrice Ranieri
- Institute of Chemical
Research of Catalonia (ICIQ), Barcelona Institute of
Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Imma Escofet
- Institute of Chemical
Research of Catalonia (ICIQ), Barcelona Institute of
Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Laura López-Suarez
- Institute of Chemical
Research of Catalonia (ICIQ), Barcelona Institute of
Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Carla Obradors
- Institute of Chemical
Research of Catalonia (ICIQ), Barcelona Institute of
Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Andrey I. Konovalov
- Institute of Chemical
Research of Catalonia (ICIQ), Barcelona Institute of
Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Antonio M. Echavarren
- Institute of Chemical
Research of Catalonia (ICIQ), Barcelona Institute of
Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- Departament
de Química Orgànica i Analítica, Universitat Rovira i Virgili, C/Marcel·lí Domingo s/n, 43007 Tarragona, Spain
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21
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Miller ZD, Lee BJ, Yoon TP. Enantioselective Crossed Photocycloadditions of Styrenic Olefins by Lewis Acid Catalyzed Triplet Sensitization. Angew Chem Int Ed Engl 2017; 56:11891-11895. [PMID: 28776908 PMCID: PMC5661956 DOI: 10.1002/anie.201706975] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 07/31/2017] [Indexed: 12/21/2022]
Abstract
The synthesis of unsymmetrical cyclobutanes by controlled heterodimerization of olefins remains a substantial challenge, particularly in an enantiocontrolled fashion. Shown herein is that chiral Lewis acid catalyzed triplet sensitization enables the synthesis of highly enantioenriched diarylcyclobutanes by photocycloaddition of structurally varied 2'-hydroxychalcones with a range of styrene coupling partners. The utility of this reaction is demonstrated through the direct synthesis of a representative norlignan cyclobutane natural product.
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Affiliation(s)
- Zachary D Miller
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI, 53726, USA
| | - Byung Joo Lee
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI, 53726, USA
| | - Tehshik P Yoon
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI, 53726, USA
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22
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Miller ZD, Lee BJ, Yoon TP. Enantioselective Crossed Photocycloadditions of Styrenic Olefins by Lewis Acid Catalyzed Triplet Sensitization. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706975] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Zachary D. Miller
- Department of Chemistry; University of Wisconsin-Madison; 1101 University Avenue Madison WI 53726 USA
| | - Byung Joo Lee
- Department of Chemistry; University of Wisconsin-Madison; 1101 University Avenue Madison WI 53726 USA
| | - Tehshik P. Yoon
- Department of Chemistry; University of Wisconsin-Madison; 1101 University Avenue Madison WI 53726 USA
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23
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de Orbe ME, Amenós L, Kirillova MS, Wang Y, López-Carrillo V, Maseras F, Echavarren AM. Cyclobutene vs 1,3-Diene Formation in the Gold-Catalyzed Reaction of Alkynes with Alkenes: The Complete Mechanistic Picture. J Am Chem Soc 2017; 139:10302-10311. [PMID: 28700226 PMCID: PMC5543397 DOI: 10.1021/jacs.7b03005] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The intermolecular gold(I)-catalyzed reaction between arylalkynes and alkenes leads to cyclobutenes by a [2 + 2] cycloaddition, which takes place stepwise, first by formation of cyclopropyl gold(I) carbenes, followed by a ring expansion. However, 1,3-butadienes are also formed in the case of ortho-substituted arylalkynes by a metathesis-type process. The corresponding reaction of alkenes with aryl-1,3-butadiynes, ethynylogous to arylalkynes, leads exclusively to cyclobutenes. A comprehensive mechanism for the gold(I)-catalyzed reaction of alkynes with alkenes is proposed on the basis of density functional theory calculations, which shows that the two pathways leading to cyclobutenes or dienes are very close in energy. The key intermediates are cyclopropyl gold(I) carbenes, which have been independently generated by retro-Buchner reaction from stereodefined 1a,7b-dihydro-1H-cyclopropa[a]naphthalenes.
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Affiliation(s)
- M Elena de Orbe
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology , Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Laura Amenós
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology , Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Mariia S Kirillova
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology , Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Yahui Wang
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology , Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Verónica López-Carrillo
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology , Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Feliu Maseras
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology , Av. Països Catalans 16, 43007 Tarragona, Spain.,Departament de Química, Universitat Autònoma de Barcelona , 08193 Bellaterra, Spain
| | - Antonio M Echavarren
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology , Av. Països Catalans 16, 43007 Tarragona, Spain.,Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili , C/Marcel·li Domingo s/n, 43007 Tarragona, Spain
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24
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Pagire SK, Hossain A, Traub L, Kerres S, Reiser O. Photosensitised regioselective [2+2]-cycloaddition of cinnamates and related alkenes. Chem Commun (Camb) 2017; 53:12072-12075. [DOI: 10.1039/c7cc06710k] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A visible-light mediated, photocatalyzed strategy for the efficient synthesis of substituted cyclobutanes from cinnamates, styrenes, and chalcones is presented.
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Affiliation(s)
- Santosh K. Pagire
- Institut für Organische Chemie
- Universität Regensburg
- 93053 Regensburg
- Germany
| | - Asik Hossain
- Institut für Organische Chemie
- Universität Regensburg
- 93053 Regensburg
- Germany
| | - Lukas Traub
- Institut für Organische Chemie
- Universität Regensburg
- 93053 Regensburg
- Germany
| | - Sabine Kerres
- Institut für Organische Chemie
- Universität Regensburg
- 93053 Regensburg
- Germany
| | - Oliver Reiser
- Institut für Organische Chemie
- Universität Regensburg
- 93053 Regensburg
- Germany
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25
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Direct Metal-Free Entry to Aminocyclobutenes or Aminocyclobutenols from Ynamides: Synthetic Applications. Chemistry 2016; 22:8998-9005. [DOI: 10.1002/chem.201601044] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Indexed: 01/28/2023]
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26
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Panish RA, Chintala SR, Fox JM. A Mixed-Ligand Chiral Rhodium(II) Catalyst Enables the Enantioselective Total Synthesis of Piperarborenine B. Angew Chem Int Ed Engl 2016; 55:4983-7. [PMID: 26991451 PMCID: PMC4900183 DOI: 10.1002/anie.201600766] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Indexed: 12/19/2022]
Abstract
A novel, mixed-ligand chiral rhodium(II) catalyst, Rh2(S-NTTL)3(dCPA), has enabled the first enantioselective total synthesis of the natural product piperarborenine B. A crystal structure of Rh2(S-NTTL)3(dCPA) reveals a "chiral crown" conformation with a bulky dicyclohexylphenyl acetate ligand and three N-naphthalimido groups oriented on the same face of the catalyst. The natural product was prepared on large scale using rhodium-catalyzed bicyclobutanation/ copper-catalyzed homoconjugate addition chemistry in the key step. The route proceeds in ten steps with an 8% overall yield and 92% ee.
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Affiliation(s)
- Robert A Panish
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA
| | - Srinivasa R Chintala
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA
| | - Joseph M Fox
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA.
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27
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Panish RA, Chintala SR, Fox JM. A Mixed‐Ligand Chiral Rhodium(II) Catalyst Enables the Enantioselective Total Synthesis of Piperarborenine B. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600766] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Robert A. Panish
- Department of Chemistry and Biochemistry University of Delaware Newark DE 19716 USA
| | | | - Joseph M. Fox
- Department of Chemistry and Biochemistry University of Delaware Newark DE 19716 USA
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28
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29
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Shaikh MN, Aziz MA, Helal A, Bououdina M, Yamani ZH, Kim TJ. Magnetic nanoparticle-supported ferrocenylphosphine: a reusable catalyst for hydroformylation of alkene and Mizoroki–Heck olefination. RSC Adv 2016. [DOI: 10.1039/c6ra03859j] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This study was focused on regioselective, re-usable and solvent-free catalysis using Fe3O4@dop-BPPF nanomaterials.
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Affiliation(s)
- M. Nasiruzzaman Shaikh
- Center of Research Excellence in Nanotechnology (CENT)
- King Fahd University of Petroleum and Minerals (KFUPM)
- Dhahran-31261
- Saudi Arabia
| | - Md. Abdul Aziz
- Center of Research Excellence in Nanotechnology (CENT)
- King Fahd University of Petroleum and Minerals (KFUPM)
- Dhahran-31261
- Saudi Arabia
| | - Aasif Helal
- Center of Research Excellence in Nanotechnology (CENT)
- King Fahd University of Petroleum and Minerals (KFUPM)
- Dhahran-31261
- Saudi Arabia
| | - Mohamed Bououdina
- Department of Physics
- College of Science
- University of Bahrain
- Kingdom of Bahrain
| | - Zain H. Yamani
- Center of Research Excellence in Nanotechnology (CENT)
- King Fahd University of Petroleum and Minerals (KFUPM)
- Dhahran-31261
- Saudi Arabia
| | - Tae-Jeong Kim
- Institute of Biomedical Engineering Research
- Medical School
- Kyungpook National University
- Daegu
- South Korea 702-911
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30
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Serrano E, Juan A, García-Montero A, Soler T, Jiménez-Márquez F, Cativiela C, Gomez MV, Urriolabeitia EP. Stereoselective Synthesis of 1,3-Diaminotruxillic Acid Derivatives: An Advantageous Combination of C-H-ortho-Palladation and On-Flow [2+2]-Photocycloaddition in Microreactors. Chemistry 2015; 22:144-52. [PMID: 26597315 DOI: 10.1002/chem.201503742] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Indexed: 01/01/2023]
Abstract
The stereoselective synthesis of ε-isomers of dimethyl esters of 1,3-diaminotruxillic acid in three steps is reported. The first step is the ortho-palladation of (Z)-2-aryl-4-aryliden-5(4H)-oxazolones 1 to give dinuclear complexes 2 with bridging carboxylates. The reaction occurs through regioselective activation of the ortho-CH bond of the 4-arylidene ring in carboxylic acids. The second step is the [2+2]-photocycloaddition of the CC exocyclic bonds of the oxazolone skeleton in 2 to afford the corresponding dinuclear ortho-palladated cyclobutanes 3. This key step was performed very efficiently by using LED light sources with different wavelengths (465, 525 or 625 nm) in flow microreactors. The final step involved the depalladation of 3 by hydrogenation in methanol to afford the ε-1,3-diaminotruxillic acid derivatives as single isomers.
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Affiliation(s)
- Elena Serrano
- Centro Universitario de la Defensa, Academia General Militar, 50090 Zaragoza (Spain)
| | - Alberto Juan
- Instituto Regional de Investigación Científica Aplicada (IRICA), Universidad de Castilla La Mancha, Avenida Camilo José cela s/n, 13071 Ciudad Real (Spain)
| | - Angel García-Montero
- Instituto de Síntesis QuímicayCatálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Fac. Ciencias, Edificio D, Pedro Cerbuna 12, 50009 Zaragoza (Spain)
| | - Tatiana Soler
- Servicios Centrales Investigación, Universidad de Alicante, 03690 Alicante (Spain)
| | - Francisco Jiménez-Márquez
- E.T.S. Ingenieros Industriales, Universidad de Castilla-La Mancha, Avenida Camilo José cela s/n, 13071 Ciudad Real (Spain)
| | - Carlos Cativiela
- Instituto de Síntesis QuímicayCatálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Fac. Ciencias, Edificio D, Pedro Cerbuna 12, 50009 Zaragoza (Spain).
| | - M Victoria Gomez
- Instituto Regional de Investigación Científica Aplicada (IRICA), Universidad de Castilla La Mancha, Avenida Camilo José cela s/n, 13071 Ciudad Real (Spain).
| | - Esteban P Urriolabeitia
- Instituto de Síntesis QuímicayCatálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Fac. Ciencias, Edificio D, Pedro Cerbuna 12, 50009 Zaragoza (Spain).
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Telmesani R, Park SH, Lynch-Colameta T, Beeler AB. [2+2] Photocycloaddition of Cinnamates in Flow and Development of a Thiourea Catalyst. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504454] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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32
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Telmesani R, Park SH, Lynch-Colameta T, Beeler AB. [2+2] Photocycloaddition of Cinnamates in Flow and Development of a Thiourea Catalyst. Angew Chem Int Ed Engl 2015; 54:11521-5. [PMID: 26136253 DOI: 10.1002/anie.201504454] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Indexed: 11/08/2022]
Abstract
Cyclobutanes derived from the dimerization of cinnamic acids are the core scaffolds of many molecules with potentially interesting biological activities. By utilizing a powerful flow photochemistry platform developed in our laboratory, we have evaluated the effects of flow on the dimerization of a range of cinnamate substrates. During the course of the study we also identified a bis(thiourea) catalyst that facilitates better reactivity and moderate diastereoselectivity in the reaction. Overall, we show that carrying out the reaction in flow in the presence of the catalyst affords consistent formation of predictable cyclobutane diastereomers.
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Affiliation(s)
- Reem Telmesani
- Department of Chemistry, Boston University, 590 Commonwealth Ave. Boston, MA 02215 (USA)
| | - Sung H Park
- Department of Chemistry, Boston University, 590 Commonwealth Ave. Boston, MA 02215 (USA)
| | - Tessa Lynch-Colameta
- Department of Chemistry, Boston University, 590 Commonwealth Ave. Boston, MA 02215 (USA)
| | - Aaron B Beeler
- Department of Chemistry, Boston University, 590 Commonwealth Ave. Boston, MA 02215 (USA).
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33
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Hydrogen Bond Controlled Anti-Aza-Michael Addition: Diastereoselective Synthesis of Cyclobutene-Containing Amino Acid Derivatives. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500269] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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34
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Chen YJ, Hu TJ, Feng CG, Lin GQ. Synthesis of chiral cyclobutanes via rhodium/diene-catalyzed asymmetric 1,4-addition: a dramatic ligand effect on the diastereoselectivity. Chem Commun (Camb) 2015; 51:8773-6. [DOI: 10.1039/c5cc02023a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly diastereo- and enantioselective rhodium-catalyzed arylation of cyclobutene-1-carboxylate esters for the efficient synthesis of chiral cyclobutanes has been developed.
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Affiliation(s)
- Ya-Jing Chen
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| | - Tian-Jiao Hu
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| | - Chen-Guo Feng
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| | - Guo-Qiang Lin
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
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35
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Ruider SA, Sandmeier T, Carreira EM. Total synthesis of (±)-hippolachnin A. Angew Chem Int Ed Engl 2014; 54:2378-82. [PMID: 25476132 DOI: 10.1002/anie.201410419] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Indexed: 11/08/2022]
Abstract
The first total synthesis of the marine polyketide (±)-hippolachnin A has been achieved in nine linear steps and an overall yield of 9%. Rapid access to the oxacyclobutapentalene core structure was secured by strategic application of an ene cyclization.
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Affiliation(s)
- Stefan A Ruider
- Laboratorium für Organische Chemie, ETH Zürich, HCI H335, Vladimir-Prelog-Weg 3, 8093 Zürich (Switzerland) http://www.carreira.ethz.ch
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36
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37
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Kim KH, Lim JW, Lee J, Go MJ, Kim JN. Thermal Intramolecular [2+2] Cycloaddition: Synthesis of 3-Azabicyclo[3.1.1]heptanes from Morita-Baylis-Hillman Adduct-Derived 4,4-Diaryl-1,3-dienes. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400571] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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38
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Gigant N, Habib S, Medoc M, Goekjian PG, Gueyrard D, Gillaizeau I. Synthesis ofexo-Enamides from Protected Lactams Using a Modified Julia Olefination Reaction: Application to the Synthesis of Spiroaminal Fragments. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402681] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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39
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Yuan Y, Bai L, Nan J, Liu J, Luan X. Regiospecific Ficini [2 + 2] cycloaddition of ynamides with cyclic isoimidium salts under catalyst-free conditions. Org Lett 2014; 16:4316-9. [PMID: 25102092 DOI: 10.1021/ol5020587] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The regiospecific [2 + 2] cycloaddition of cyclic isoimidium salts with ynamides is described. This effort led to the development of the first successful example of a catalyst-free, thermally driven Ficini [2 + 2] cycloaddition process of ynamides with α,β-unsaturated carbonyl compounds, giving the stable cyclobutenamides in excellent yields (up to 99%).
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Affiliation(s)
- Yini Yuan
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University , Xi'an 710069, China
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40
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Gutekunst WR, Baran PS. Applications of C-H functionalization logic to cyclobutane synthesis. J Org Chem 2014; 79:2430-52. [PMID: 24548142 PMCID: PMC3985916 DOI: 10.1021/jo4027148] [Citation(s) in RCA: 150] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Indexed: 02/08/2023]
Abstract
The application of C-H functionalization logic to target-oriented synthesis provides an exciting new venue for the development of new and useful strategies in organic chemistry. In this article, C-H functionalization reactions are explored as an alternative approach to access pseudodimeric cyclobutane natural products, such as the dictazole and the piperarborenine families. The use of these strategies in a variety of complex settings highlights the subtle geometric, steric, and electronic effects at play in the auxiliary guided C-H functionalization of cyclobutanes.
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Affiliation(s)
- Will R. Gutekunst
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Phil S. Baran
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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41
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Parella R, Gopalakrishnan B, Babu SA. Direct Bis-Arylation of Cyclobutanecarboxamide via Double C–H Activation: An Auxiliary-Aided Diastereoselective Pd-Catalyzed Access to Trisubstituted Cyclobutane Scaffolds Having Three Contiguous Stereocenters and an All-cis Stereochemistry. J Org Chem 2013; 78:11911-34. [DOI: 10.1021/jo4019733] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Ramarao Parella
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Manauli
P.O., Sector 81, SAS Nagar, Mohali, Knowledge
City, Punjab 140306, India
| | - Bojan Gopalakrishnan
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Manauli
P.O., Sector 81, SAS Nagar, Mohali, Knowledge
City, Punjab 140306, India
| | - Srinivasarao Arulananda Babu
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Manauli
P.O., Sector 81, SAS Nagar, Mohali, Knowledge
City, Punjab 140306, India
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42
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Liu R, Winston-McPherson GN, Yang ZY, Zhou X, Song W, Guzei IA, Xu X, Tang W. Generation of rhodium(I) carbenes from ynamides and their reactions with alkynes and alkenes. J Am Chem Soc 2013; 135:8201-4. [PMID: 23701315 DOI: 10.1021/ja4047069] [Citation(s) in RCA: 119] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Rh(I) carbenes were conveniently generated from readily available ynamides. These metal carbene intermediates could undergo metathesis with electron-rich or neutral alkynes to afford 2-oxopyrrolidines or be trapped by tethered alkenes to yield 3-azabicyclo[3.1.0]hexanes, a common skeleton in numerous bioactive pharmaceuticals. Although the scope of the former is limited, the latter reaction tolerates various substituted alkenes.
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Affiliation(s)
- Renhe Liu
- School of Pharmacy, University of Wisconsin, Madison , Wisconsin 53705, United States
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43
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Mack DJ, Njardarson JT. Recent Advances in the Metal-Catalyzed Ring Expansions of Three- and Four-Membered Rings. ACS Catal 2013. [DOI: 10.1021/cs300771d] [Citation(s) in RCA: 242] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Daniel J. Mack
- Department of Chemistry and Chemical
Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853, United States
| | - Jon T. Njardarson
- Department of Chemistry and
Biochemistry, University of Arizona, 1306
E. University Blvd., Tucson, Arizona 85721, United States
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44
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Selander N, Worrell BT, Fokin VV. Ring expansion and rearrangements of rhodium(II) azavinyl carbenes. Angew Chem Int Ed Engl 2012; 51:13054-7. [PMID: 23161725 PMCID: PMC3627540 DOI: 10.1002/anie.201207820] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Indexed: 11/09/2022]
Abstract
Room for expansion: an efficient, regioselective, and convergent method for the ring expansion and rearrangement of 1-sulfonyl-1,2,3-triazoles under rhodium(II)-catalyzed conditions is described. These denitrogenative reactions form substituted enaminone and olefin-based products. The enaminone products can be further functionalized to give various heterocycles and ketone derivatives, thus rendering the sulfonyl triazole traceless.
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Affiliation(s)
- Nicklas Selander
- Department of Chemistry The Scripps Research Institute La Jolla, CA 92037 (USA) Fax: (+1) 858-784-7562, Homepage: http://www.scripps.edu/chem/fokin
| | - Brady T. Worrell
- Department of Chemistry The Scripps Research Institute La Jolla, CA 92037 (USA) Fax: (+1) 858-784-7562, Homepage: http://www.scripps.edu/chem/fokin
| | - Valery V. Fokin
- Department of Chemistry The Scripps Research Institute La Jolla, CA 92037 (USA) Fax: (+1) 858-784-7562, Homepage: http://www.scripps.edu/chem/fokin
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45
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Selander N, Worrell BT, Fokin VV. Ring Expansion and Rearrangements of Rhodium(II) Azavinyl Carbenes. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201207820] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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46
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Liu R, Zhang M, Winston-McPherson G, Tang W. Ring expansion of alkynyl cyclopropanes to highly substituted cyclobutenes via a N-sulfonyl-1,2,3-triazole intermediate. Chem Commun (Camb) 2012; 49:4376-8. [PMID: 22864054 DOI: 10.1039/c2cc34609e] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Regioselective ring expansion of alkynyl cyclopropanes to highly substituted cyclobutenes was developed. The reaction involves a copper-catalyzed cycloaddition of an alkyne with an arylsulfonyl azide and a silver-catalyzed carbene formation followed by ring expansion of a cyclopropyl carbene intermediate.
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Affiliation(s)
- Renhe Liu
- School of Pharmacy, University of Wisconsin, Madison, WI 53705, USA
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47
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Gutekunst WR, Gianatassio R, Baran PS. Sequential C(sp3)-H arylation and olefination: total synthesis of the proposed structure of pipercyclobutanamide A. Angew Chem Int Ed Engl 2012; 51:7507-10. [PMID: 22715157 DOI: 10.1002/anie.201203897] [Citation(s) in RCA: 210] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Indexed: 11/05/2022]
Affiliation(s)
- Will R Gutekunst
- Department of Chemistry, The Scripps Research Institute, 10650 North Torrey Pines Road, La Jolla, CA 92037, USA
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