1
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Pedrón M, Sendra J, Ginés I, Tejero T, Vicario JL, Merino P. Computational studies of Brønsted acid-catalyzed transannular cycloadditions of cycloalkenone hydrazones. Beilstein J Org Chem 2023; 19:477-486. [PMID: 37123091 PMCID: PMC10130903 DOI: 10.3762/bjoc.19.37] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 04/12/2023] [Indexed: 05/02/2023] Open
Abstract
The contribution to the energy barrier of a series of tethers in transannular cycloadditions of cycloalkenes with hydrazones has been computationally studied by using DFT. The Houk's distortion model has been employed to evaluate the influence of the tether in the cycloaddition reaction. That model has been extended to determine the contribution of each tether and, more importantly, the effect exerted between them. In addition to the distortion induced by the tethers, the entropy effects caused by them has also been studied. The analysis of the evolution of the electron localization function along the reaction revealed the highly concerted character of the reaction.
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Affiliation(s)
- Manuel Pedrón
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Jana Sendra
- Departamento de Química Orgánica e Inorgánica, Universidad del País Vasco (UPV/EHU) P.O. Box 644, 48080 Bilbao, Spain
| | - Irene Ginés
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Tomás Tejero
- Instituto de Síntesis Química y Catálisis Homogénea (SQCH), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Jose L Vicario
- Departamento de Química Orgánica e Inorgánica, Universidad del País Vasco (UPV/EHU) P.O. Box 644, 48080 Bilbao, Spain
| | - Pedro Merino
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), Universidad de Zaragoza, 50009 Zaragoza, Spain
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2
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Reyes E, Prieto L, Carrillo L, Uria U, Vicario J. Recent Developments in Transannular Reactions. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1843-1954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Transannular reactions have shown a remarkable performance for the construction of polycyclic scaffolds from medium- or large sized cyclic molecules in an unconventional manner. Recent examples of transannular reactions reported from 2011 have been reviewed, emphasizing the excellent performance of this approach when accessing the target compounds. This review also highlights how this methodology provides an alternative approach to other commonly used methodologies for the construction of cyclic entities such as cyclization or cycloaddition reactions
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3
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Geier SJ, Vogels CM, Melanson JA, Westcott SA. The transition metal-catalysed hydroboration reaction. Chem Soc Rev 2022; 51:8877-8922. [DOI: 10.1039/d2cs00344a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review covers the development of the transition metal-catalysed hydroboration reaction, from its beginnings in the 1980s to more recent developments including earth-abundant catalysts and an ever-expanding array of substrates.
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Affiliation(s)
- Stephen J. Geier
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Christopher M. Vogels
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Jennifer A. Melanson
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Stephen A. Westcott
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
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4
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Hu Y, Li H, Qu R, He T, Tang X, Chen W, Li L, Bai H, Li C, Wang W, Fu G, Luo G, Xia X, Zhang J. Lysine Stapling Screening Provides Stable and Low Toxic Cationic Antimicrobial Peptides Combating Multidrug-Resistant Bacteria In Vitro and In Vivo. J Med Chem 2021; 65:579-591. [PMID: 34968054 DOI: 10.1021/acs.jmedchem.1c01754] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Cationic antimicrobial peptides (CAMPs) are promising for treatment of multidrug-resistant (MDR) bacteria-caused infections. However, clinical application of CAMPs has been hampered mostly due to their poor proteolytic stability and hemolytic toxicity. Recently, lysine-stapled CAMPs developed by us had been proved to increase peptide stability in vitro without induction of hemolysis. Herein, the applicability of the lysine stapling strategy was further explored by using five natural or artificial CAMPs as model peptides. Lysine stapling screening was implemented to provide 13 cyclic analogues in total. Biological screening of these cyclic analogues showed that CAMPs with a better amphiphilic structure were inclined to exhibit improved antimicrobial activity, protease stability, and biocompatibility after lysine-stapling. One of the stapled analogues of BF15-a1 was found to have extended half-life in plasma, enhanced antimicrobial activity against clinically isolated MDR ESKAPE pathogens, and remained highly effective in combating MRSA infection in a mouse model.
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Affiliation(s)
- Yuchen Hu
- Innovative Drug Research Centre (IDRC), Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, People's Republic of China
| | - Hong Li
- Innovative Drug Research Centre (IDRC), Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, People's Republic of China
| | - Rui Qu
- Innovative Drug Research Centre (IDRC), Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, People's Republic of China
| | - Tong He
- Innovative Drug Research Centre (IDRC), Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, People's Republic of China
| | - Xiaomin Tang
- Innovative Drug Research Centre (IDRC), Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, People's Republic of China
| | - Wanyi Chen
- Department of Pharmacy, Chongqing University Cancer Hospital, Chongqing 400030, People's Republic of China
| | - Lixian Li
- Department of Pharmacy, Chongqing University Cancer Hospital, Chongqing 400030, People's Republic of China
| | - Hao Bai
- Department of Pharmacy, Chongqing University Cancer Hospital, Chongqing 400030, People's Republic of China
| | - Chao Li
- Department of Pharmacy, Chongqing University Cancer Hospital, Chongqing 400030, People's Republic of China
| | - Wei Wang
- Clinical Laboratory, Chongqing University Cancer Hospital, Chongqing 400030, People's Republic of China
| | - Gang Fu
- Clinical Laboratory, Chongqing University Cancer Hospital, Chongqing 400030, People's Republic of China
| | - Guangli Luo
- Clinical Laboratory, Chongqing University Cancer Hospital, Chongqing 400030, People's Republic of China
| | - Xuefeng Xia
- Innovative Drug Research Centre (IDRC), Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, People's Republic of China
| | - Jinqiang Zhang
- Innovative Drug Research Centre (IDRC), Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, People's Republic of China
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5
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Clements JL, Pohl F, Muthupandi P, Rogers SC, Mao J, Doctor A, Birman VB, Held JM. A clickable probe for versatile characterization of S-nitrosothiols. Redox Biol 2020; 37:101707. [PMID: 32916549 PMCID: PMC7490559 DOI: 10.1016/j.redox.2020.101707] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 08/12/2020] [Accepted: 08/27/2020] [Indexed: 12/23/2022] Open
Abstract
S-nitrosation of cysteine thiols (SNOs), commonly referred to as S-nitrosylation, is a cysteine oxoform that plays an important role in cellular signaling and impacts protein function and stability. Direct labeling of SNOs in cells with the flexibility to perform a wide range of cellular and biochemical assays remains a bottleneck as all SNO-targeted probes to date employ a single analytical modality such as biotin or a specific fluorophore. We therefore developed a clickable, alkyne-containing SNO probe 'PBZyn' based on the o-phosphino-benzoyl group warhead that enables multi-modal analysis via click conjugation. We demonstrate the utility of PBZyn to assay SNOs using in situ cellular imaging, protein blotting and affinity purification, as well as mass spectrometry. The flexible PBZyn probe will greatly facilitate investigation into the regulation of SNOs.
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Affiliation(s)
- Jenna L Clements
- Department of Medicine, Washington University Medical School, St. Louis, MO, 63110, USA
| | - Franziska Pohl
- Department of Medicine, Washington University Medical School, St. Louis, MO, 63110, USA
| | - Pandi Muthupandi
- Department of Chemistry, Washington University in Saint Louis, St. Louis, MO, 63110, USA
| | - Stephen C Rogers
- Department of Pediatrics and Center for Blood Oxygen Transport and Hemostasis, University of Maryland, School of Medicine, Baltimore, MD, 21201, USA
| | - Jack Mao
- Department of Medicine, Washington University Medical School, St. Louis, MO, 63110, USA
| | - Allan Doctor
- Department of Pediatrics and Center for Blood Oxygen Transport and Hemostasis, University of Maryland, School of Medicine, Baltimore, MD, 21201, USA
| | - Vladimir B Birman
- Department of Chemistry, Washington University in Saint Louis, St. Louis, MO, 63110, USA
| | - Jason M Held
- Department of Medicine, Washington University Medical School, St. Louis, MO, 63110, USA; Siteman Cancer Center, Washington University Medical School, St. Louis, MO, 63110, USA; Department of Anesthesiology, Washington University Medical School, St. Louis, MO, 63110, USA.
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6
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Recent Synthesis Developments of Organoboron Compounds via Metal-Free Catalytic Borylation of Alkynes and Alkenes. Molecules 2018; 24:molecules24010101. [PMID: 30597884 PMCID: PMC6337501 DOI: 10.3390/molecules24010101] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Revised: 12/18/2018] [Accepted: 12/19/2018] [Indexed: 12/20/2022] Open
Abstract
Diboron reagents have been traditionally regarded as "Lewis acids", which can react with simple Lewis base to create a significant nucleophilic character in one of boryl moieties. In particular, bis(pinacolato)diboron (B₂pin₂) reacts with simple Lewis bases, such as N-heterocyclic carbenes (NHCs), phosphines and alkoxides. This review focuses on the application of trivalent nucleophilic boryl synthon in the selective preparation of organoboron compounds, mainly through metal-free catalytic diboration and the β-boration reactions of alkynes and alkenes.
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7
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Affiliation(s)
- Chun M. Deng
- Faculty of Chemistry and Environmental Science; Guangdong Ocean University; Zhanjiang 524088 P. R. of China
| | - Yi F. Ma
- Faculty of Chemistry and Environmental Science; Guangdong Ocean University; Zhanjiang 524088 P. R. of China
| | - Yan M. Wen
- Faculty of Chemistry and Environmental Science; Guangdong Ocean University; Zhanjiang 524088 P. R. of China
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8
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Karabiyikoglu S, Boon BA, Merlic CA. Cycloaddition Reactions of Cobalt-Complexed Macrocyclic Alkynes: The Transannular Pauson-Khand Reaction. J Org Chem 2017; 82:7732-7744. [PMID: 28719209 DOI: 10.1021/acs.joc.7b01369] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The Pauson-Khand reaction is a powerful tool for the synthesis of cyclopentenones through the efficient [2 + 2 + 1] cycloaddition of dicobalt alkyne complexes with alkenes. While intermolecular and intramolecular variants are widely known, transannular versions of this reaction are unknown and the basis of this study. Macrocyclic enyne and dienyne complexes were readily synthesized by palladium(II)-catalyzed oxidative macrocyclizations of bis(vinyl boronate esters) or ring-closing metathesis reactions followed by complexation with dicobalt octacarbonyl. Several reaction modalities of these macrocyclic complexes were uncovered. In addition to the first successful transannular Pauson-Khand reactions, other intermolecular and transannular cycloaddition reactions included intermolecular Pauson-Khand reactions, transannular [4 + 2] cycloaddition reactions, intermolecular [2 + 2 + 2] cycloaddition reactions, and intermolecular [2 + 2 + 1 + 1] cycloaddition reactions. The structural and reaction requirements for each process are presented.
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Affiliation(s)
- Sedef Karabiyikoglu
- Department of Chemistry and Biochemistry, University of California , Los Angeles, California 90095-1569, United States
| | - Byron A Boon
- Department of Chemistry and Biochemistry, University of California , Los Angeles, California 90095-1569, United States
| | - Craig A Merlic
- Department of Chemistry and Biochemistry, University of California , Los Angeles, California 90095-1569, United States
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9
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Salvant JM, Edwards AV, Kurek DZ, Looper RE. Regioselective Base-Mediated Cyclizations of Mono-N-acylpropargylguanidines. J Org Chem 2017; 82:6958-6967. [PMID: 28558466 PMCID: PMC6016371 DOI: 10.1021/acs.joc.7b00639] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A regioselective base-mediated cyclization of mono-N-acylpropargylguanidines is reported. A related Ag(I)-catalyzed hydroamination strategy was recently employed to yield N3-Cbz-protected ene-guanidines, which found utility in the synthesis of naamidine A. Herein, we report the base-catalyzed hydroamination of mono-N-acylpropargylguanidines, which proceeds with the opposite regiochemistry to deliver isomerized N2-acyl-2-aminoimidazoles with broad substrate scope, circumventing the problematic regiospecific acylation of free 2-aminoimidazoles.
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Affiliation(s)
- Justin M. Salvant
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Anne V. Edwards
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Daniel Z. Kurek
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Ryan E. Looper
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
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10
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Darzi ER, White BM, Loventhal LK, Zakharov LN, Jasti R. An Operationally Simple and Mild Oxidative Homocoupling of Aryl Boronic Esters To Access Conformationally Constrained Macrocycles. J Am Chem Soc 2017; 139:3106-3114. [PMID: 28151655 DOI: 10.1021/jacs.6b12658] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Constrained macrocyclic scaffolds are recognized as challenging synthetic motifs with few general macrocyclization methods capable of accessing these types of systems. Although palladium catalyzed oxidative homocoupling of aryl boronic acids and esters to biphenyls has been recognized as a common byproduct in Suzuki-Miyaura cross-couplings for decades, this reactivity has not been leveraged for the synthesis of challenging molecules. Here we report an oxidative boronic ester homocoupling reaction as a mild method for the synthesis of strained and conformationally restricted macrocycles. Higher yields and better efficiencies are observed for intramolecular diboronic ester homocouplings when directly compared to the analogous intramolecular Suzuki-Miyaura cross-couplings or reductive Yamamoto homocouplings. Substrates included strained polyphenylene macrocycles, strained cycloalkynes, and a key macrocyclic intermediate toward the synthesis of acerogenin A. Notably, this oxidative homocoupling reaction is performed at room temperature, open to atmosphere, and without the need to rigorously exclude water, thus representing an operationally simple alternative to traditional cross-coupling macrocyclizations. The mechanism of the reaction was investigated indicating that 1-5 nm palladium nanoparticles may serve as the active catalyst.
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Affiliation(s)
- Evan R Darzi
- Department of Chemistry and Biochemistry & Materials Science Institute, University of Oregon , Eugene, Oregon 97403, United States
| | - Brittany M White
- Department of Chemistry and Biochemistry & Materials Science Institute, University of Oregon , Eugene, Oregon 97403, United States
| | - Lance K Loventhal
- Department of Chemistry and Biochemistry & Materials Science Institute, University of Oregon , Eugene, Oregon 97403, United States
| | - Lev N Zakharov
- CAMCOR, University of Oregon , Eugene, Oregon 97403, United States
| | - Ramesh Jasti
- Department of Chemistry and Biochemistry & Materials Science Institute, University of Oregon , Eugene, Oregon 97403, United States
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11
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Abaee MS, Mohammadi M, Mojtahedi MM, Halvagar MR. Synthesis and Diels–Alder reactions of novel styrylcyclohexenol dienes: a general pathway for the synthesis of tricyclic lactone and octahydronaphthalene systems. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.07.096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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12
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He CQ, Chen TQ, Patel A, Karabiyikoglu S, Merlic CA, Houk KN. Distortion, Tether, and Entropy Effects on Transannular Diels–Alder Cycloaddition Reactions of 10–18-Membered Rings. J Org Chem 2015; 80:11039-47. [DOI: 10.1021/acs.joc.5b02288] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Cyndi Qixin He
- Department of Chemistry and Biochemistry and ‡Department of Chemical and Biochemical
Engineering, University of California, Los Angeles, California 90095, United States
| | - Tiffany Q. Chen
- Department of Chemistry and Biochemistry and ‡Department of Chemical and Biochemical
Engineering, University of California, Los Angeles, California 90095, United States
| | - Ashay Patel
- Department of Chemistry and Biochemistry and ‡Department of Chemical and Biochemical
Engineering, University of California, Los Angeles, California 90095, United States
| | - Sedef Karabiyikoglu
- Department of Chemistry and Biochemistry and ‡Department of Chemical and Biochemical
Engineering, University of California, Los Angeles, California 90095, United States
| | - Craig A. Merlic
- Department of Chemistry and Biochemistry and ‡Department of Chemical and Biochemical
Engineering, University of California, Los Angeles, California 90095, United States
| | - K. N. Houk
- Department of Chemistry and Biochemistry and ‡Department of Chemical and Biochemical
Engineering, University of California, Los Angeles, California 90095, United States
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13
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Karabiyikoglu S, Merlic CA. Transannular [4 + 2] Cycloaddition Reactions of Cobalt-Complexed Macrocyclic Dienynes. Org Lett 2015; 17:4086-9. [DOI: 10.1021/acs.orglett.5b01984] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Sedef Karabiyikoglu
- Department
of Chemistry and
Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Craig A. Merlic
- Department
of Chemistry and
Biochemistry, University of California, Los Angeles, California 90095-1569, United States
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14
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Bai Y, Zhang F, Shen J, Luo F, Zhu G. Copper-Catalyzed β-Selective Hydroborylation of Ynamides: A Facile Access to (E)-β-Alkenylamide Boronates. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500119] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yihui Bai
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 China
| | - Fang Zhang
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 China
| | - Jiajia Shen
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 China
| | - Fang Luo
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 China
| | - Gangguo Zhu
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 China
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15
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Kotha S, Chavan AS, Goyal D. Diversity-Oriented Approaches to Polycyclics and Bioinspired Molecules via the Diels-Alder Strategy: Green Chemistry, Synthetic Economy, and Beyond. ACS COMBINATORIAL SCIENCE 2015; 17:253-302. [PMID: 25875156 DOI: 10.1021/co500146u] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We describe diverse approaches to various dienes and their utilization in the Diels-Alder reaction to produce a variety of polycycles. The dienes covered here are prepared by simple alkylation reaction or via the Claisen rearrangement or by enyne metathesis of alkyne or enyne building blocks. Here, we have also included the Diels-Alder chemistry of dendralenes, a higher analog of cross-conjugated dienes. The present article is inclusive of o-xylylene derivatives that are generated in situ starting with benzosultine or benzosulfone derivatives. The Diels-Alder reaction of these dienes with various dienophiles gave diverse polycyclic systems and biologically important targets.
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Affiliation(s)
- Sambasivarao Kotha
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076 India
| | - Arjun S. Chavan
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076 India
| | - Deepti Goyal
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076 India
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16
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Chachignon H, Scalacci N, Petricci E, Castagnolo D. Synthesis of 1,2,3-Substituted Pyrroles from Propargylamines via a One-Pot Tandem Enyne Cross Metathesis–Cyclization Reaction. J Org Chem 2015; 80:5287-95. [DOI: 10.1021/acs.joc.5b00222] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Helene Chachignon
- Department
of Applied Sciences, Northumbria University Newcastle, Ellison Building, Ellison Place, NE1 8ST Newcastle upon Tyne, United Kingdom
| | - Nicolò Scalacci
- Department
of Applied Sciences, Northumbria University Newcastle, Ellison Building, Ellison Place, NE1 8ST Newcastle upon Tyne, United Kingdom
| | - Elena Petricci
- Dipartimento
di Biotecnologie, Chimica e Farmacia, University of Siena, Via A. Moro
2, 53100 Siena, Italy
| | - Daniele Castagnolo
- Department
of Applied Sciences, Northumbria University Newcastle, Ellison Building, Ellison Place, NE1 8ST Newcastle upon Tyne, United Kingdom
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17
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Guo H, Wang Y, Du GF, Dai B, He L. N-Heterocyclic carbene-catalysed amidation of vinyl esters with aromatic amines. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.03.071] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Yamamoto Y, Matsui K, Shibuya M. Tandem Ruthenium-Catalyzed Transfer-Hydrogenative Cyclization/Intramolecular Diels–Alder Reaction of Enediynes Affording Dihydrocoumarin-Fused Polycycles. Org Lett 2014; 16:1806-9. [DOI: 10.1021/ol500548x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yoshihiko Yamamoto
- Department of Basic Medicinal
Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan
| | - Kazuma Matsui
- Department of Basic Medicinal
Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan
| | - Masatoshi Shibuya
- Department of Basic Medicinal
Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan
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19
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Stereoselective construction of the ABC-ring system of fusidane triterpenes via intermolecular/transannular Michael reaction cascade. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.01.071] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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