1
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Li J, Ni H, Zhang W, Lai Z, Jin H, Zeng L, Cui S. A multicomponent reaction for modular assembly of indole-fused heterocycles. Chem Sci 2024; 15:5211-5217. [PMID: 38577354 PMCID: PMC10988590 DOI: 10.1039/d4sc00522h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 03/03/2024] [Indexed: 04/06/2024] Open
Abstract
Indoles are privileged chemical entities in natural products and drug discovery. Indole-fused heterocycles, particularly seven-membered ones, have received increasing attention due to their distinctive chemical characteristics and wide spectrum of bioactivities. However, the synthetic access to these compounds is highly limited. Herein, we report a unique multicomponent reaction (MCR) for modular assembly of indole-fused seven-membered heterocycles. In this process, indole, formaldehyde and amino hydrochloride could assemble rapidly to yield indole-fused oxadiazepines, and another addition of sodium thiosulphate would furnish indole-fused thiadiazepines. The biological evaluation disclosed the promising anticancer activity of these compounds. Furthermore, this MCR could be applicable in the late-stage and selective modifications of peptides. Therefore, this work provides a powerful strategy for indole functionalization and valuable tool for construction of seven-membered heterocycles.
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Affiliation(s)
- Jiaming Li
- College of Pharmaceutical Sciences, National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Hao Ni
- College of Pharmaceutical Sciences, National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Weiwei Zhang
- College of Pharmaceutical Sciences, National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Zhencheng Lai
- College of Pharmaceutical Sciences, National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Huimin Jin
- College of Pharmaceutical Sciences, National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Linwei Zeng
- College of Pharmaceutical Sciences, National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Sunliang Cui
- College of Pharmaceutical Sciences, National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University 866 Yuhangtang Road Hangzhou 310058 China
- Jinhua Institute of Zhejiang University Jinhua Zhejiang Province 321299 China
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2
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Kale A, Kwon SJ, Lee J, Lee JK, Lee K. Ca(II)-Catalyzed Cascade Reaction of Tryptamines with Propargylic Alcohols: Temperature-Driven Ring Opening and Closing via the Allene Migration Pathway for the Synthesis of Pyrrolo[1,2- a]indoles. Org Lett 2024; 26:1196-1200. [PMID: 38305701 DOI: 10.1021/acs.orglett.3c04357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
A temperature-dependent cascade of reactions between tryptamines and propargylic alcohols was developed to achieve selective formation of pyrroloindoline and pyrrolo[1,2-a]indole heterocycles by Ca(II) catalysis. The cascade consists of electrophilic addition of allene at the C3 carbon of indole followed by intramolecular cyclization at 60 °C to yield pyrroloindolines. Furthermore, simultaneous 1,2-allene migration and pyrrolidine ring opening were followed by intramolecular cyclization via C-N bond formation at reflux temperature to obtain pyrrolo[1,2-a]indole scaffolds. A wide range of substrates, a clean reaction profile, scalability, and good to excellent yields are the advantages of this protocol.
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Affiliation(s)
- Ashok Kale
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Seoul, Goyang 10326, Republic of Korea
| | - Su Jeong Kwon
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Seoul, Goyang 10326, Republic of Korea
| | - Joohan Lee
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Seoul, Goyang 10326, Republic of Korea
| | - Jae Kyun Lee
- Brain Science Institute, KIST, Seoul 02792, Republic of Korea
| | - Kyeong Lee
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Seoul, Goyang 10326, Republic of Korea
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3
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Yuan J, Shen L, Guo N, Yin Y, Yang P, Yang L, Xiao Y, Zhang S. Visible-Light-Induced Cascade Cyclization of 1-Acryloyl-2-cyanoindole: Access of Difluoroalkylated Pyrrolo[1,2- a]indolediones. J Org Chem 2023; 88:16598-16608. [PMID: 37948397 DOI: 10.1021/acs.joc.3c02183] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
An effective method for accessing diverse difluoroalkylated pyrrolo[1,2-a]indolediones via visible-light-induced PhI(OAc)2-promoted cascade difluoroalkylation/cyclization reaction under mild conditions has been established. This method is noteworthy for its use of DMSO-H2O as a green medium at room temperature and avoidance of photocatalysts. The reactions are straightforward to execute and convenient to expand on, provide good to excellent yields, and have good functional group tolerance.
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Affiliation(s)
- Jinwei Yuan
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Lu Shen
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Na Guo
- College of Advanced Interdisciplinary Science and Technology, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Yanli Yin
- College of Advanced Interdisciplinary Science and Technology, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Pengyuan Yang
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Liangru Yang
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Yongmei Xiao
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Shouren Zhang
- Henan Key Laboratory of Nanocomposites and Applications, Institute of Nanostructured Functional Materials, Huanghe Science and Technology College, Zhengzhou 450006, P. R. China
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4
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Hill J, Jones RM, Crich D. Discovery of a Hydroxylamine-Based Brain-Penetrant EGFR Inhibitor for Metastatic Non-Small-Cell Lung Cancer. J Med Chem 2023; 66:15477-15492. [PMID: 37934858 PMCID: PMC10683025 DOI: 10.1021/acs.jmedchem.3c01669] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 10/12/2023] [Accepted: 10/18/2023] [Indexed: 11/09/2023]
Abstract
Metastases to the brain remain a significant problem in lung cancer, as treatment by most small-molecule targeted therapies is severely limited by efflux transporters at the blood-brain barrier (BBB). Here, we report the discovery of a selective, orally bioavailable, epidermal growth factor receptor (EGFR) inhibitor, 9, that exhibits high brain penetration and potent activity in osimertinib-resistant cell lines bearing L858R/C797S and exon19del/C797S EGFR resistance mutations. In vivo, 9 induced tumor regression in an intracranial patient-derived xenograft (PDX) murine model suggesting it as a potential lead for the treatment of localized and metastatic non-small-cell lung cancer (NSCLC) driven by activating mutant bearing EGFR. Overall, we demonstrate that an underrepresented functional group in medicinal chemistry, the trisubstituted hydroxylamine moiety, can be incorporated into a drug scaffold without the toxicity commonly surmised to accompany these units, all while maintaining potent biological activity and without the molecular weight creep common to drug optimization campaigns.
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Affiliation(s)
- Jarvis Hill
- Department
of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, Georgia 30602, United States
- Department
of Chemistry, University of Georgia, 302 East Campus Road, Athens, Georgia 30602, United States
| | | | - David Crich
- Department
of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, Georgia 30602, United States
- Department
of Chemistry, University of Georgia, 302 East Campus Road, Athens, Georgia 30602, United States
- Complex
Carbohydrate Research Center, University
of Georgia, 315 Riverbend
Road, Athens, Georgia 30602, United States
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5
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Grunwald MA, Hagenlocher SE, Turkanovic L, Bauch SM, Wachsmann SB, Altevogt LA, Ebert M, Knöller JA, Raab AR, Schulz F, Kolmangadi MA, Zens A, Huber P, Schönhals A, Bilitiewski U, Laschat S. Does thermotropic liquid crystalline self-assembly control biological activity in amphiphilic amino acids? - tyrosine ILCs as a case study. Phys Chem Chem Phys 2023. [PMID: 37366119 DOI: 10.1039/d3cp00485f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Amphiphilic amino acids represent promising scaffolds for biologically active soft matter. In order to understand the bulk self-assembly of amphiphilic amino acids into thermotropic liquid crystalline phases and their biological properties a series of tyrosine ionic liquid crystals (ILCs) was synthesized, carrying a benzoate unit with 0-3 alkoxy chains at the tyrosine unit and a cationic guanidinium head group. Investigation of the mesomorphic properties by polarizing optical microscopy (POM), differential scanning calorimetry (DSC) and X-ray diffraction (WAXS, SAXS) revealed smectic A bilayers (SmAd) for ILCs with 4-alkoxy- and 3,4-dialkoxybenzoates, whereas ILCs with 3,4,5-trisalkoxybenzoates showed hexagonal columnar mesophases (Colh), while different counterions had only a minor influence. Dielectric measurements revealed a slightly higher dipole moment of non-mesomorphic tyrosine-benzoates as compared to their mesomorphic counterparts. The absence of lipophilic side chains on the benzoate unit was important for the biological activity. Thus, non-mesomorphic tyrosine benzoates and crown ether benzoates devoid of additional side chains at the benzoate unit displayed the highest cytotoxicities (against L929 mouse fibroblast cell line) and antimicrobial activity (against Escherichia coli ΔTolC and Staphylococcus aureus) and promising selectivity ratio in favour of antimicrobial activity.
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Affiliation(s)
- Marco André Grunwald
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | - Selina Emilie Hagenlocher
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | - Larissa Turkanovic
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | - Soeren Magnus Bauch
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | | | - Luca Alexa Altevogt
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | - Max Ebert
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | - Julius Agamemnon Knöller
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | - Aileen Rebecca Raab
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | - Finn Schulz
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | | | - Anna Zens
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | - Patrick Huber
- Institute for Materials and X-Ray Physics, Hamburg University of Technology, D-21073 Hamburg, Germany
- Centre for X-ray and Nano Science CXNS, Deutsches Elektronen-Synchrotron DESY, D-22605 Hamburg, Germany
- Centre for Hybrid Nanostructures ChyN, University Hamburg, D-21073 Hamburg, Germany.
| | - Andreas Schönhals
- Bundesanstalt für Materialforschung und-prüfung (BAM), D-12205 Berlin, Germany.
| | - Ursula Bilitiewski
- AG Compound Profiling and Screening, Helmholtz Zentrum für Infektionsforschung, Inhoffenstr. 7, D-38124 Braunschweig, Germany.
| | - Sabine Laschat
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
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6
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Chakraborty P, Pradhan S, Richard Premkumar J, Sundararaju B. Valorization of Terpenols Under Iron Catalysis. J Catal 2023. [DOI: 10.1016/j.jcat.2023.03.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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7
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Synthesis of Polysubstituted 1,2-Dihydro-3H-pyrrolo[1,2-a]indol-3-ones through Domino Palladium-Catalyzed Reactions of Indol-2-ylmethyl Acetates with 1,3-Dicarbonyl Derivatives. Catalysts 2022. [DOI: 10.3390/catal12121516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
A straightforward assembly of polysubstituted 1,2-dihydro-3H-pyrrolo[1,2-a]indol-3-ones through a domino palladium-catalyzed reaction of indol-2-ylmethyl acetates with 1,3-dicarbonyl derivatives is described. The key role of the features of the 1,3-dicarbonyls on the reaction outcome has been explored. The employment of 2-methylcyclohexan-1,3-dione as the dicarbonyl source could allow further challenging indole nucleus functionalizations.
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8
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Huang AX, Zhu HL, Zeng FL, Chen XL, Huang XQ, Qu LB, Yu B. 1-Acryloyl-2-cyanoindole: A Skeleton for Visible-Light-Induced Cascade Annulation. Org Lett 2022; 24:3014-3018. [PMID: 35420829 DOI: 10.1021/acs.orglett.2c00927] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
1-Acryloyl-2-cyanoindoles were found to be novel and efficient skeletons in visible-light-induced persulfate-promoted cascade cyclization reactions. With this transition-metal-free photocatalytic procedure, various sulfonated/thiocyanated pyrrolo[1,2-a]indolediones were synthesized from 1-acryloyl-2-cyanoindoles with sulfonyl hydrazides/NH4SCN at room temperature under mild reaction conditions.
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Affiliation(s)
- An-Xiang Huang
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Hu-Lin Zhu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Fan-Lin Zeng
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Xiao-Lan Chen
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Xian-Qiang Huang
- School of Chemistry & Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Ling-Bo Qu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Bing Yu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
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9
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Yang L, Yang Q, Wang E, Yang J, Li Q, Cao J, Wang L, Liao X, Yang Y, Yang X. Synthesis of novel 1-phenyl-benzopyrrolizidin-3-one derivatives and evaluation of their cytoneuroprotective effects against NMDA-induced injury in PC12 cells. Bioorg Med Chem 2022; 59:116675. [DOI: 10.1016/j.bmc.2022.116675] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 02/14/2022] [Accepted: 02/15/2022] [Indexed: 11/02/2022]
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10
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Zheng L, Wang L, Tang Y. Intramolecular Ring-opening of Indole-cyclopropanes ※. ACTA CHIMICA SINICA 2022. [DOI: 10.6023/a22010002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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Zhang J, Wu M, Ju H, Yang H, Qian B, Ding K, Wu J, Xie M. K2S2O8-mediated acylarylation of unactivated alkenes via acyl radical addition/C–H annulation cascade of N-allyl-indoles with silver cocatalysis. Org Chem Front 2022. [DOI: 10.1039/d1qo01069g] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A silver-catalyzed, K2S2O8-mediated protocol to access the regioselective acylarylation of unactivated alkenes was reported.
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Affiliation(s)
- Jitan Zhang
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Manyi Wu
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Hu Ju
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Haitao Yang
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Baiyang Qian
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Ke Ding
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Jiaping Wu
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Meihua Xie
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
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12
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Cheng J, Zhang H, Lv J, Zheng J. Palladium‐Catalyzed Intermolecular Dicarbofunctionalization of Unactivated Alkenes: Synthesis of Fluoroalkylated Heterocycles with All‐Carbon Quaternary Centers. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Jiajia Cheng
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University 2 Xueyuan Road Fuzhou 350116 People's Republic of China
| | - Huali Zhang
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University 2 Xueyuan Road Fuzhou 350116 People's Republic of China
| | - Jinliang Lv
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University 2 Xueyuan Road Fuzhou 350116 People's Republic of China
| | - Jinhua Zheng
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University 2 Xueyuan Road Fuzhou 350116 People's Republic of China
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13
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Shelke YG, Hande PE, Gharpure SJ. Recent advances in the synthesis of pyrrolo[1,2- a]indoles and their derivatives. Org Biomol Chem 2021; 19:7544-7574. [PMID: 34524330 DOI: 10.1039/d1ob01103k] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The pyrrolo[1,2-a]indole unit is a privileged heterocycle found in numerous natural products and has been shown to exhibit diverse pharmacological properties. Thus, recent years have witnessed immense interest from the synthesis community on the synthesis of this scaffold. In light of the ever-increasing demand for pyrrolo[1,2-a]indoles in drug discovery, this review provides an overview of recent synthesis methods for the preparation of pyrrolo[1,2-a]indoles and their derivatives. The mechanistic pathway and stereo-electronic factors affecting the yield and selectivity of the product are briefly explained. Furthermore, we have attempted to demonstrate the utility of the developed methods in the synthesis of bioactive molecules and natural products, wherever offered.
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Affiliation(s)
- Yogesh G Shelke
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Pankaj E Hande
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Santosh J Gharpure
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
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14
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Das A, Thakur S, Das T. Indole‐2‐Carboxaldehyde: An Emerging Precursor for the Construction of Diversified Imperative Skeleton. ChemistrySelect 2021. [DOI: 10.1002/slct.202100695] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Arunima Das
- Department of Chemistry, NIT Jamshedpur Jamshedpur 831014 India
| | - Seema Thakur
- Department of Chemistry, NIT Jamshedpur Jamshedpur 831014 India
| | - Tapas Das
- Department of Chemistry, NIT Jamshedpur Jamshedpur 831014 India
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15
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Duan XY, Tian Z, Liu B, He T, Zhao LL, Dong M, Zhang P, Qi J. Highly Enantioselective Synthesis of Pyrroloindolones and Pyrroloquinolinones via an N-Heterocyclic Carbene-Catalyzed Cascade Reaction. Org Lett 2021; 23:3777-3781. [PMID: 33891421 DOI: 10.1021/acs.orglett.1c01203] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this work, the NHC-catalyzed Michael/Mannich/lactamization cascade reaction of enals with either indole-2-carboxaldehyde-derived aldimines or indole-7-carboxaldehyde-derived aldimines is described. This protocol enables the rapid assembly of optically active pyrroloindolones and pyrroloquinolinones derivatives under mild conditions with high yields, excellent enantioselectivities, and a broad substrate scope.
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16
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Nadirova MA, Khanova AV, Zubkov FI, Mertsalov DF, Kolesnik IA, Petkevich SK, Potkin VI, Shetnev AA, Presnukhina SI, Sinelshchikova AA, Grigoriev MS, Zaytsev VP. Cascade of the Hinsberg / IMDAF reactions in the synthesis 2-arylsulfonyl-3a,6-epoxyisoindoles and 4a,7-epoxyisoquinolines in water. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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17
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Chauhan M, Saxena A, Saha B. An insight in anti-malarial potential of indole scaffold: A review. Eur J Med Chem 2021; 218:113400. [PMID: 33823394 DOI: 10.1016/j.ejmech.2021.113400] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 03/19/2021] [Accepted: 03/21/2021] [Indexed: 10/21/2022]
Abstract
Malaria is a major parasitic disease in tropical and sub-tropical regions. Pertaining to the sustaining resistance in malarial parasite against the available drugs, novel treatment options are the need of the hour. In this resolve recently, focus has shifted to finding the natural alternatives that possess anti-plasmodial activity for combatting malaria. Drawing on the text written in ancient scriptures and Ayurveda, natural compounds are now being screened for their therapeutic properties. Indole is one such natural compound, present in all living organisms, it displays a range of therapeutic activities including anticancer, anti-inflammatory, antimalarial etc. In this review, we have discussed various indole scaffold as well as the semi-synthetic drugs containing indole moiety that have been synthesized for malaria treatment.
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Affiliation(s)
- Mehak Chauhan
- Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh, India
| | - Anjali Saxena
- Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh, India
| | - Biswajit Saha
- Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh, India.
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18
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Boylan A, Nguyen TS, Lundy BJ, Li JY, Vallakati R, Sundstrom S, May JA. Rate Dependence on Inductive and Resonance Effects for the Organocatalyzed Enantioselective Conjugate Addition of Alkenyl and Alkynyl Boronic Acids to β-Indolyl Enones and β-Pyrrolyl Enones. Molecules 2021; 26:1615. [PMID: 33799473 PMCID: PMC8000498 DOI: 10.3390/molecules26061615] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 03/05/2021] [Accepted: 03/08/2021] [Indexed: 12/01/2022] Open
Abstract
Two key factors bear on reaction rates for the conjugate addition of alkenyl boronic acids to heteroaryl-appended enones: the proximity of inductively electron-withdrawing heteroatoms to the site of bond formation and the resonance contribution of available heteroatom lone pairs to stabilize the developing positive charge at the enone β-position. For the former, the closer the heteroatom is to the enone β-carbon, the faster the reaction. For the latter, greater resonance stabilization of the benzylic cationic charge accelerates the reaction. Thus, reaction rates are increased by the closer proximity of inductive electron-withdrawing elements, but if resonance effects are involved, then increased rates are observed with electron-donating ability. Evidence for these trends in isomeric substrates is presented, and the application of these insights has allowed for reaction conditions that provide improved reactivity with previously problematic substrates.
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Affiliation(s)
- Amy Boylan
- Department of Chemistry, University of Houston, 3585 Cullen Blvd., Fleming Building 112, Houston, TX 77204-5003, USA; (A.B.); (T.S.N.); (B.J.L.); (J.-Y.L.); (R.V.); (S.S.)
| | - Thien S. Nguyen
- Department of Chemistry, University of Houston, 3585 Cullen Blvd., Fleming Building 112, Houston, TX 77204-5003, USA; (A.B.); (T.S.N.); (B.J.L.); (J.-Y.L.); (R.V.); (S.S.)
- Graduate School of Energy, Environment, Water and Sustainability (EEWS), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Korea
| | - Brian J. Lundy
- Department of Chemistry, University of Houston, 3585 Cullen Blvd., Fleming Building 112, Houston, TX 77204-5003, USA; (A.B.); (T.S.N.); (B.J.L.); (J.-Y.L.); (R.V.); (S.S.)
- Baker Hughes, 17021 Aldine Westfield Rd, Houston, TX 77073, USA
| | - Jian-Yuan Li
- Department of Chemistry, University of Houston, 3585 Cullen Blvd., Fleming Building 112, Houston, TX 77204-5003, USA; (A.B.); (T.S.N.); (B.J.L.); (J.-Y.L.); (R.V.); (S.S.)
- Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Ravikrishna Vallakati
- Department of Chemistry, University of Houston, 3585 Cullen Blvd., Fleming Building 112, Houston, TX 77204-5003, USA; (A.B.); (T.S.N.); (B.J.L.); (J.-Y.L.); (R.V.); (S.S.)
- Vallark Pharma Pvt. Ltd., Genome Valley, Turkapally, Hyderabad 500078, India
| | - Sasha Sundstrom
- Department of Chemistry, University of Houston, 3585 Cullen Blvd., Fleming Building 112, Houston, TX 77204-5003, USA; (A.B.); (T.S.N.); (B.J.L.); (J.-Y.L.); (R.V.); (S.S.)
- Department of Chemistry and Biochemistry, Baylor Sciences Bldg. D.208, One Bear Place #97348, Waco, TX 76798, USA
| | - Jeremy A. May
- Department of Chemistry, University of Houston, 3585 Cullen Blvd., Fleming Building 112, Houston, TX 77204-5003, USA; (A.B.); (T.S.N.); (B.J.L.); (J.-Y.L.); (R.V.); (S.S.)
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19
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Surur AS, Huluka SA, Mitku ML, Asres K. Indole: The After Next Scaffold of Antiplasmodial Agents? Drug Des Devel Ther 2020; 14:4855-4867. [PMID: 33204071 PMCID: PMC7666986 DOI: 10.2147/dddt.s278588] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 10/12/2020] [Indexed: 12/23/2022] Open
Abstract
Malaria remains a global public health problem due to the uphill fight against the causative Plasmodium parasites that are relentless in developing resistance. Indole-based antiplasmodial compounds are endowed with multiple modes of action, of which inhibition of hemozoin formation is the major mechanism of action reported for compounds such as cryptolepine, flinderoles, and isosungucine. Indole-based compounds exert their potent activity against chloroquine-resistant Plasmodium strains by inhibiting hemozoin formation in a mode of action different from that of chloroquine or through a novel mechanism of action. For example, dysregulating the sodium and osmotic homeostasis of Plasmodium through inhibition of PfATP4 is the novel mechanism of cipargamin. The potential of developing multi-targeted compounds through molecular hybridization ensures the existence of indole-based compounds in the antimalarial pipeline.
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Affiliation(s)
| | - Solomon Assefa Huluka
- Department of Pharmacology and Clinical Pharmacy, Addis Ababa University, Addis Ababa, Ethiopia
| | | | - Kaleab Asres
- Department of Pharmaceutical Chemistry and Pharmacognosy, Addis Ababa University, Addis Ababa, Ethiopia
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20
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Liu Y, Song H, Zhang C, Liu Y, Shi B. Copper‐Catalyzed
Modular Access to
N
‐Fused
Polycyclic Indoles and
5‐Aroyl
‐pyrrol‐2‐ones
via
Intramolecular N—H/C—H Annulation with Alkynes: Scope and Mechanism Probes. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.202000246] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Yan‐Hua Liu
- Department of Chemistry, Zhejiang University, Hangzhou Zhejiang 310027 China
| | - Hong Song
- Department of Chemistry, Zhejiang University, Hangzhou Zhejiang 310027 China
| | - Chi Zhang
- Department of Chemistry, Zhejiang University, Hangzhou Zhejiang 310027 China
| | - Yue‐Jin Liu
- Department of Chemistry, Zhejiang University, Hangzhou Zhejiang 310027 China
| | - Bing‐Feng Shi
- Department of Chemistry, Zhejiang University, Hangzhou Zhejiang 310027 China
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21
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Wang L, Zhou J, Chen HQ, Li DL, Lin JB, Li K, Ding TM, Zhang SY. Fe-Catalyzed Sequential C(sp 3)-H/N-H Annulation of 2-Methylindoles with Ethyl Trifluoropyruvate at Room Temperature: Construction of Pyrrolo[1,2-α]indoles. Org Lett 2020; 22:4716-4720. [PMID: 32498522 DOI: 10.1021/acs.orglett.0c01522] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient and benign iron-catalyzed room-temperature method was developed for direct sequential C(sp3)-H/N-H annulation to construct pyrroloindole scaffolds. This strategy features cheap and readily available raw materials and mild room-temperature reaction conditions and provides a green and practical method for the one-pot rapid synthesis of a wide range of diversely functionalized pyrrolo[1,2-α]indoles.
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Affiliation(s)
- Le Wang
- School of Biotechnology and Health Science, International Healthcare Innovation Institute, Wuyi University, Jiangmen 529020, China.,Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jia Zhou
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Han-Qia Chen
- School of Biotechnology and Health Science, International Healthcare Innovation Institute, Wuyi University, Jiangmen 529020, China
| | - Dong-Li Li
- School of Biotechnology and Health Science, International Healthcare Innovation Institute, Wuyi University, Jiangmen 529020, China
| | - Jun-Bing Lin
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.,Shaanxi Key Laboratory of Chemical Reaction Engineering, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an 716000, China
| | - Ke Li
- Department of Medicinal Chemistry, College of Pharmacy, Second Military Medical University, No. 325, Guohe Road, Shanghai 200433, China
| | - Tong-Mei Ding
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Shu-Yu Zhang
- School of Biotechnology and Health Science, International Healthcare Innovation Institute, Wuyi University, Jiangmen 529020, China.,Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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22
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Reddy CR, Kajare RC, Punna N. Silver-catalyzed acylative annulation of N-propargylated indoles with α-keto acids: access to acylated pyrrolo[1,2-a]indoles. Chem Commun (Camb) 2020; 56:3445-3448. [DOI: 10.1039/c9cc10069e] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A novel carbon-centered radical cyclization of N-propargyl indoles with α-keto acids to form acylated pyrrolo[1,2-a]indoles involving difunctionalisation of the alkyne moiety with concomitant annulation is disclosed.
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Affiliation(s)
- Chada Raji Reddy
- Department of Organic Synthesis & Process Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad–500007
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Roshan Chandrakant Kajare
- Department of Organic Synthesis & Process Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad–500007
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Nagender Punna
- Department of Organic Synthesis & Process Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad–500007
- India
- Academy of Scientific and Innovative Research (AcSIR)
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23
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Gorre R, Enagandhula D, Balasubramanian S, Akondi SM. Visible-light-driven metal-free aerobic synthesis of highly diastereoselective phosphinoylpyrroloindoles. Org Biomol Chem 2020; 18:1354-1358. [DOI: 10.1039/c9ob02730k] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A tandem C–P and C–C bond formation promoted by visible light at room temperature in a highly diastereoselective manner is described.
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Affiliation(s)
- Ramesh Gorre
- Department of Organic Synthesis and Process Chemistry
- CSIR-Indian Institute of Chemical Technology (CSIR-IICT)
- Hyderabad 500007
- India
- Academy of scientific and innovative research (AcSIR)
| | - Damodar Enagandhula
- Department of Organic Synthesis and Process Chemistry
- CSIR-Indian Institute of Chemical Technology (CSIR-IICT)
- Hyderabad 500007
- India
| | - Sridhar Balasubramanian
- Academy of scientific and innovative research (AcSIR)
- Ghaziabad 201002
- India
- Department of Analytical Chemistry
- CSIR-IICT
| | - Srirama Murthy Akondi
- Department of Organic Synthesis and Process Chemistry
- CSIR-Indian Institute of Chemical Technology (CSIR-IICT)
- Hyderabad 500007
- India
- Academy of scientific and innovative research (AcSIR)
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24
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Casado-Sánchez A, Domingo-Legarda P, Cabrera S, Alemán J. Visible light photocatalytic asymmetric synthesis of pyrrolo[1,2-a]indoles via intermolecular [3+2] cycloaddition. Chem Commun (Camb) 2019; 55:11303-11306. [DOI: 10.1039/c9cc05838a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The asymmetric synthesis of pyrrolo[1,2-a]indoles is developed through a [3+2] cycloaddition between silyl-indole derivatives and α,β-unsaturated N-acyl oxazolidinones by merging photocatalysis and Lewis acid catalysis.
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Affiliation(s)
| | | | - Silvia Cabrera
- Inorganic Chemistry Department
- Módulo 7
- Universidad Autónoma de Madrid
- 28049 Madrid
- Spain
| | - José Alemán
- Organic Chemistry Department
- Módulo 1
- Universidad Autónoma de Madrid
- 28049 Madrid
- Spain
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25
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Legarda PD, García-Rubia A, Arrayás RG, Carretero JC. Palladium-catalyzed ortho-olefination of 2-arylpyrrolidines: A tool for increasing structural complexity in nitrogen heterocycles. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.05.076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Huang H, Yu M, Su X, Guo P, Zhao J, Zhou J, Li Y. Sustainable Radical Cascades to Synthesize Difluoroalkylated Pyrrolo[1,2-a]indoles. J Org Chem 2018; 83:2425-2437. [DOI: 10.1021/acs.joc.7b03017] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Honggui Huang
- Department
of Chemistry and ‡State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, China
| | - Menglin Yu
- Department
of Chemistry and ‡State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, China
| | - Xiaolong Su
- Department
of Chemistry and ‡State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, China
| | - Peng Guo
- Department
of Chemistry and ‡State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, China
| | - Jia Zhao
- Department
of Chemistry and ‡State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, China
| | - Jiabing Zhou
- Department
of Chemistry and ‡State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, China
| | - Yi Li
- Department
of Chemistry and ‡State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, China
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27
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Bader K, Neidhardt MM, Wöhrle T, Forschner R, Baro A, Giesselmann F, Laschat S. Amino acid/crown ether hybrid materials: how charge affects liquid crystalline self-assembly. SOFT MATTER 2017; 13:8379-8391. [PMID: 29063090 DOI: 10.1039/c7sm01484h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
To probe the influence of electrostatic interactions on the mesomorphic self-assembly and phase behaviour of hybrid liquid crystals a series of crown ether/tyrosine hybrid systems was prepared by Steglich esterification of alkyl N-(tert-butoxycarbonyl)-l-tyrosinates with 4-carboxybenzo[15]crown-5 and 4-carboxybenzo[18]crown-6. The obtained derivatives allowed further manipulations at the NH functional group and complexation of the crown ether unit with NaI to give neutral or charged hybrid materials. All compounds were investigated by differential scanning calorimetry (DSC), polarizing optical microscopy (POM) and X-ray diffraction (XRD) measurements. Neither the variation of the N-protecting group, introduction of charge at the N-terminus nor anion exchange (Cl vs. I) resulted in mesomorphism. In contrast, N-Boc-protected and unprotected hybrids formed rectangular columnar (Colr) mesophases with phase widths up to 35 K. NaI complexation switched these neutral thermotropic derivatives into ionic liquid crystals (ILCs) and induced a change of mesophase type from Colr to smectic A (SmA). A comparison of experimentally obtained layer distances and theoretically calculated molecular lengths indicated bilayer SmA formation with interdigitated alkyl chains. Packing models for both mesophase types are proposed and discussed with respect to stabilizing interactions.
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Affiliation(s)
- Korinna Bader
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany.
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28
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Reichl KD, Smith MJ, Song MK, Johnson RP, Porco JA. Biomimetic Total Synthesis of (±)-Griffipavixanthone via a Cationic Cycloaddition-Cyclization Cascade. J Am Chem Soc 2017; 139:14053-14056. [PMID: 28942643 DOI: 10.1021/jacs.7b09265] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We report the concise, biomimetic total synthesis of the dimeric, Diels-Alder natural product griffipavixanthone from a readily accessible prenylated xanthone monomer. The key step utilizes a novel intermolecular [4+2] cycloaddition-cyclization cascade between a vinyl p-quinone methide and an in situ generated isomeric diene promoted by either Lewis or Brønsted acids. Experimental and computational studies of the reaction pathway suggest that a stepwise, cationic Diels-Alder cycloaddition is operative.
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Affiliation(s)
- Kyle D Reichl
- Department of Chemistry and Center for Molecular Discovery (BU-CMD), Boston University , 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - Michael J Smith
- Department of Chemistry and Center for Molecular Discovery (BU-CMD), Boston University , 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - Min K Song
- Department of Chemistry and Materials Science Program, University of New Hampshire , Durham, New Hampshire 03824, United States
| | - Richard P Johnson
- Department of Chemistry and Materials Science Program, University of New Hampshire , Durham, New Hampshire 03824, United States
| | - John A Porco
- Department of Chemistry and Center for Molecular Discovery (BU-CMD), Boston University , 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
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29
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Gharpure SJ, Shelke YG. Lewis Acid Mediated Cascade Friedel–Craft/Alkyne Indol-2-yl Cation Cyclization/Vinyl Cation Trapping for the Synthesis of N-Fused Indole Derivatives. Org Lett 2017; 19:5406-5409. [DOI: 10.1021/acs.orglett.7b02680] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Santosh J. Gharpure
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai - 400076, India
| | - Yogesh G. Shelke
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai - 400076, India
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30
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Chakrabarty I, Inamdar SM, Akram MO, Gade AB, Banerjee S, Bera S, Patil NT. [3+2]-Annulation of platinum-bound azomethine ylides with distal C[double bond, length as m-dash]C bonds of N-allenamides. Chem Commun (Camb) 2017; 53:196-199. [PMID: 27917422 DOI: 10.1039/c6cc07874e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A Pt-catalyzed, highly regioselective reaction between N-allenamides and imino-alkynes leading to pyrrolo[1,2-a]indoles is described. This represents the first example of [3+2]-annulation of Pt-bound azomethine ylides with the distal C[double bond, length as m-dash]C bond of N-allenamides. The mechanism of the reaction was established by computational studies.
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Affiliation(s)
- Indradweep Chakrabarty
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune - 411008, India. and Academy of Scientific and Innovative Research (AcSIR), New Delhi - 110025, India
| | - Suleman M Inamdar
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune - 411008, India.
| | - Manjur O Akram
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune - 411008, India. and Academy of Scientific and Innovative Research (AcSIR), New Delhi - 110025, India
| | - Amol B Gade
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune - 411008, India. and Academy of Scientific and Innovative Research (AcSIR), New Delhi - 110025, India
| | - Subhrashis Banerjee
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune - 411008, India
| | - Saibal Bera
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune - 411008, India
| | - Nitin T Patil
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune - 411008, India. and Academy of Scientific and Innovative Research (AcSIR), New Delhi - 110025, India
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31
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Zhu YS, Yuan BB, Guo JM, Jin SJ, Dong HH, Wang QL, Bu ZW. A Copper-Catalyzed Friedel–Crafts Alkylation/Cyclization Sequence: an Approach to Functionalized Pyrrolo[1,2-a]indole Spirooxindoles and 9H-Pyrrolo[1,2-a]indoles. J Org Chem 2017; 82:5669-5677. [DOI: 10.1021/acs.joc.7b00488] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Yan-Shuo Zhu
- Institute of Fine
Chemistry
and Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Bei-Bei Yuan
- Institute of Fine
Chemistry
and Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Jiao-Mei Guo
- Institute of Fine
Chemistry
and Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Shao-Jing Jin
- Institute of Fine
Chemistry
and Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Hua-Hui Dong
- Institute of Fine
Chemistry
and Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Qi-Lin Wang
- Institute of Fine
Chemistry
and Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Zhan-Wei Bu
- Institute of Fine
Chemistry
and Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
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32
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Nguyen TN, May JA. Enantioselective organocatalytic conjugate addition of organoboron nucleophiles. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.02.061] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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33
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34
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Singh S, Butani HH, Vachhani DD, Shah A, Van der Eycken EV. Ruthenium-catalysed one-pot regio- and diastereoselective synthesis of pyrrolo[1,2-a]indoles via cascade C–H functionalization/annulation. Chem Commun (Camb) 2017; 53:10812-10815. [DOI: 10.1039/c7cc06276a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Catalytic, regioselective and diastereoselective synthesis of pyrrolo[1,2-a]indoles through a cascade C–H activation and cyclization process.
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Affiliation(s)
- Sukhdev Singh
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC)
- Department of Chemistry
- University of Leuven (KU Leuven)
- Celestijnenlaan 200F
- Leuven
| | - Himanshu H. Butani
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC)
- Department of Chemistry
- University of Leuven (KU Leuven)
- Celestijnenlaan 200F
- Leuven
| | | | - Anamik Shah
- Department of Chemistry
- Saurashtra University
- Rajkot
- India
| | - Erik V. Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC)
- Department of Chemistry
- University of Leuven (KU Leuven)
- Celestijnenlaan 200F
- Leuven
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35
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Chen S, Zhang P, Shu W, Gao Y, Tang G, Zhao Y. Cascade Phosphinoylation/Cyclization/Isomerization Process for the Synthesis of 2-Phosphinoyl-9H-pyrrolo[1,2-a]indoles. Org Lett 2016; 18:5712-5715. [DOI: 10.1021/acs.orglett.6b02941] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Su Chen
- Department
of Chemistry, College of Chemistry and Chemical Engineering, and the
Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
| | - Pengbo Zhang
- Department
of Chemistry, College of Chemistry and Chemical Engineering, and the
Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
| | - Wanyun Shu
- Department
of Chemistry, College of Chemistry and Chemical Engineering, and the
Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
| | - Yuzhen Gao
- Department
of Chemistry, College of Chemistry and Chemical Engineering, and the
Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
| | - Guo Tang
- Department
of Chemistry, College of Chemistry and Chemical Engineering, and the
Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
| | - Yufen Zhao
- Department
of Chemistry, College of Chemistry and Chemical Engineering, and the
Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
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36
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Kaur R, Garg Y, Pandey SK. A Short Total Synthesis of the Antimalarial Flindersial Alkaloids. ChemistrySelect 2016. [DOI: 10.1002/slct.201601162] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ramandeep Kaur
- School of Chemistry and Biochemistry; Thapar University; Patiala 147001 India
| | - Yuvraj Garg
- School of Chemistry and Biochemistry; Thapar University; Patiala 147001 India
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37
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Seo HA, Cheon CH. Synthesis of 2-Vinylindole-3-Acetic Acid Derivatives via Cyanide-Catalyzed Imino-Stetter Reaction. J Org Chem 2016; 81:7917-23. [DOI: 10.1021/acs.joc.6b01621] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hong-Ahn Seo
- Department
of Chemistry, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Cheol-Hong Cheon
- Department
of Chemistry, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
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38
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Tejeda JEC, Landschoot BK, Kerr MA. Radical Cyclizations for the Synthesis of Pyrroloindoles: Progress toward the Flinderoles. Org Lett 2016; 18:2142-5. [DOI: 10.1021/acs.orglett.6b00768] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Joanne E. Curiel Tejeda
- Department
of Chemistry, The University of Western Ontario, London, Ontario, Canada, N6A
5B7
| | - Bryan K. Landschoot
- Department
of Chemistry, The University of Western Ontario, London, Ontario, Canada, N6A
5B7
| | - Michael A. Kerr
- Department
of Chemistry, The University of Western Ontario, London, Ontario, Canada, N6A
5B7
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39
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Makarov AS, Merkushev AA, Uchuskin MG, Trushkov IV. Oxidative Furan-to-Indole Rearrangement. Synthesis of 2-(2-Acylvinyl)indoles and Flinderole C Analogues. Org Lett 2016; 18:2192-5. [PMID: 27074535 DOI: 10.1021/acs.orglett.6b00805] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Oxidative rearrangement of 2-(2-aminobenzyl)furans affording 2-(2-acylvinyl)indoles in a stereocontrolled manner in good-to-excellent yields has been developed. Thus, (2-aminobenzyl)furans with electron-releasing alkoxy substituents in the phenyl group form only E-isomers of 2-(2-acylvinyl)indoles. Conversely, substrates without such substituents produce target products as Z-isomers exclusively. A short diastereoselective method for the transformation of the obtained 2-(2-acylvinyl)indoles into antimalarial bisindole alkaloid flinderole A-C analogues has been developed.
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Affiliation(s)
- Anton S Makarov
- Department of Chemistry, Perm State University , Bukireva st. 15, Perm 614990, Russia
| | - Anton A Merkushev
- Department of Chemistry, Perm State University , Bukireva st. 15, Perm 614990, Russia.,Institute of Technical Chemistry UrB RAS, Academika Koroleva st. 3, Perm 614013, Russia
| | - Maxim G Uchuskin
- Department of Chemistry, Perm State University , Bukireva st. 15, Perm 614990, Russia
| | - Igor V Trushkov
- Department of Chemistry, M.V. Lomonosov Moscow State University , Leninskie gory 1-3, Moscow 119991, Russia.,Laboratory of Chemical Synthesis, Federal Research Center of Pediatric Hematology, Oncology and Immunology , Samory Mashela 1, Moscow 117997, Russia
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40
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Brønsted Acid Catalyzed [3+2]-Cycloaddition of 2-Vinylindoles with In Situ Generated 2-Methide-2H-indoles: Highly Enantioselective Synthesis of Pyrrolo[1,2-a]indoles. Chemistry 2016; 22:7074-8. [DOI: 10.1002/chem.201601020] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Indexed: 01/17/2023]
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41
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Kainz QM, Matier CD, Bartoszewicz A, Zultanski SL, Peters JC, Fu GC. Asymmetric copper-catalyzed C-N cross-couplings induced by visible light. Science 2016; 351:681-4. [PMID: 26912852 PMCID: PMC4770572 DOI: 10.1126/science.aad8313] [Citation(s) in RCA: 521] [Impact Index Per Article: 65.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Despite a well-developed and growing body of work in copper catalysis, the potential of copper to serve as a photocatalyst remains underexplored. Here we describe a photoinduced copper-catalyzed method for coupling readily available racemic tertiary alkyl chloride electrophiles with amines to generate fully substituted stereocenters with high enantioselectivity. The reaction proceeds at -40°C under excitation by a blue light-emitting diode and benefits from the use of a single, Earth-abundant transition metal acting as both the photocatalyst and the source of asymmetric induction. An enantioconvergent mechanism transforms the racemic starting material into a single product enantiomer.
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Affiliation(s)
- Quirin M. Kainz
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Carson D. Matier
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Agnieszka Bartoszewicz
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Susan L. Zultanski
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Jonas C. Peters
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Gregory C. Fu
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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42
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Dethe DH, Boda R. Expedient synthesis of densely substituted pyrrolo[1,2-a]indoles. Org Biomol Chem 2016; 14:5843-60. [DOI: 10.1039/c6ob00861e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The strategy was further applied for the synthesis of optically active pyrrolo[1,2-a]indoles in >97% de using the chiral auxiliary based approach.
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Affiliation(s)
- Dattatraya H. Dethe
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Raghavender Boda
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
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43
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Dethe DH, Boda R. A Novel Pd-Catalysed Annulation Reaction for the Syntheses of Pyrroloindoles and Pyrroloquinolines. Chemistry 2015; 22:106-10. [PMID: 26552055 DOI: 10.1002/chem.201503652] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Indexed: 11/09/2022]
Abstract
Pd-catalysed annulation reactions between indole derivatives and internal alkyne esters leading to various pyrrolo[1,2-a]indoles and pyrroloquinolines have been developed. The strategy involves an intermolecular addition of the indole nitrogen on to the internal alkyne ester followed by an intramolecular insertion of a vinyl-palladium complex into the carbonyl group. This method offers a facile and practical approach to pyrrolo[1,2-a]indoles and pyrroloquinolines.
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Affiliation(s)
- Dattatraya H Dethe
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016 (India).
| | - Raghavender Boda
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016 (India)
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44
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Sutariya TR, Labana BM, Parmar NJ, Kant R, Gupta VK, Plata GB, Padrón JM. Efficient synthesis of some new antiproliferative N-fused indoles and isoquinolines via 1,3-dipolar cycloaddition reaction in an ionic liquid. NEW J CHEM 2015. [DOI: 10.1039/c4nj02308k] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Triethylammonium acetate (TEAA) as a new, recyclable and environmentally friendly reaction medium for the intramolecular[3+2] cycloaddition reaction.
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Affiliation(s)
| | | | | | - Rajni Kant
- Post-Graduate Department of Physics
- University of Jammu
- Jammu
- India
| | - Vivek K. Gupta
- Post-Graduate Department of Physics
- University of Jammu
- Jammu
- India
| | - Gabriela B. Plata
- BioLab
- Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO-AG)
- Centro de Investigaciones Biomédicas de Canarias (CIBICAN)
- 38206 La Laguna
- Spain
| | - José M. Padrón
- BioLab
- Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO-AG)
- Centro de Investigaciones Biomédicas de Canarias (CIBICAN)
- 38206 La Laguna
- Spain
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45
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Ishikura M, Abe T, Choshi T, Hibino S. Simple indole alkaloids and those with a nonrearranged monoterpenoid unit. Nat Prod Rep 2015; 32:1389-471. [DOI: 10.1039/c5np00032g] [Citation(s) in RCA: 160] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This review summarizes the isolation, structure determination, total syntheses and biological activities of simple indole alkaloids and those with a nonrearranged monoterpenoid unit, with literature coverage from 2012 to 2013.
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Affiliation(s)
- Minoru Ishikura
- School of Pharmaceutical Sciences
- Health Sciences University of Hokkaido
- Ishikari-Tobetsu
- Japan
| | - Takumi Abe
- School of Pharmaceutical Sciences
- Health Sciences University of Hokkaido
- Ishikari-Tobetsu
- Japan
| | - Tominari Choshi
- Graduate School of Pharmacy & Pharmaceutical Sciences
- Faculty of Pharmacy & Pharmaceutical Sciences
- Fukuyama University
- Fukuyama
- Japan
| | - Satoshi Hibino
- Graduate School of Pharmacy & Pharmaceutical Sciences
- Faculty of Pharmacy & Pharmaceutical Sciences
- Fukuyama University
- Fukuyama
- Japan
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46
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Kamptmann SB, Ley SV. Facilitating Biomimetic Syntheses of Borrerine Derived Alkaloids by Means of Flow-Chemical Methods. Aust J Chem 2015. [DOI: 10.1071/ch14530] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Flow chemistry is widely used nowadays in synthetic chemistry and has increasingly been applied to complex natural product synthesis. However, to date flow chemistry has not found a place in the area of biomimetic synthesis. Here we show the syntheses of borrerine derived alkaloids, indicating that we can use biomimetic principles in flow to prepare complex architectures in a single step.
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47
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Xu HD, Jia ZH, Xu K, Zhou H, Shen MH. One-Pot Protocol to Functionalized Benzopyrrolizidine Catalyzed Successively by Rh2(OAc)4 and Cu(OTf)2: A Transition Metal–Lewis Acid Catalysis Relay. Org Lett 2014; 17:66-9. [DOI: 10.1021/ol503247t] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Hua-Dong Xu
- School of Pharmaceutical
Engineering and Life Science, Changzhou University, No. 1 Middle
Gehu Road, Changzhou, Jiangsu
Province 213164, China
| | - Zhi-Hong Jia
- School of Pharmaceutical
Engineering and Life Science, Changzhou University, No. 1 Middle
Gehu Road, Changzhou, Jiangsu
Province 213164, China
| | - Ke Xu
- School of Pharmaceutical
Engineering and Life Science, Changzhou University, No. 1 Middle
Gehu Road, Changzhou, Jiangsu
Province 213164, China
| | - Hao Zhou
- School of Pharmaceutical
Engineering and Life Science, Changzhou University, No. 1 Middle
Gehu Road, Changzhou, Jiangsu
Province 213164, China
| | - Mei-Hua Shen
- School of Pharmaceutical
Engineering and Life Science, Changzhou University, No. 1 Middle
Gehu Road, Changzhou, Jiangsu
Province 213164, China
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48
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Saicic RN. Protecting group-free syntheses of natural products and biologically active compounds. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.06.025] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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49
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Dethe DH, Erande RD, Dherange BD. Remarkable Switch of Regioselectivity in Diels–Alder Reaction: Divergent Total Synthesis of Borreverine, Caulindoles, and Flinderoles. Org Lett 2014; 16:2764-7. [DOI: 10.1021/ol501078d] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Dattatraya H. Dethe
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Rohan D. Erande
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Balu D. Dherange
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
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50
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Ghosh A, Stanley LM. Enantioselective hydroacylation of N-vinylindole-2-carboxaldehydes. Chem Commun (Camb) 2014; 50:2765-8. [DOI: 10.1039/c4cc00210e] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report rhodium-catalyzed hydroacylations of N-vinylindole-2-carboxaldehydes that form chiral, non-racemic 2,3-dihydro-1H-pyrrolo[1,2-a]indol-1-ones in high yields with excellent enantioselectivities.
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Affiliation(s)
- Avipsa Ghosh
- Department of Chemistry
- Iowa State University
- Ames, USA
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