1
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Merski I, Yin J, VanderLinden RT, Rainier JD. The Role of N-Substitution in Regio- and Stereoselective Vinylogous Imidonaphthoquinone (VINAquinone) [2 + 2] Photocycloadditions. Org Lett 2024; 26:4921-4925. [PMID: 38814707 DOI: 10.1021/acs.orglett.4c01418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
Described in this manuscript are intramolecular [2 + 2] photocycloadditions of readily available vinylogous imidonaphthoquinones whose regio- and diastereoselectivity is dependent on the substitution on the vinylogous imide. When exposed to 419 nm light, 2° vinylogous imidonaphthoquinones give novel bridged tetracyclic aza-anthraquinones from a rare crossed [2 + 2] cycloaddition reaction. In contrast, exposure of the corresponding 3° substrates to white light leads to linear adducts. Also outlined here are auxiliary controlled diastereoselective reactions and cyclobutane fragmentations as a means of generating the spirofused γ-lactam moiety present in the ansalactam family of natural product.
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Affiliation(s)
- Ian Merski
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84108, United States
| | - Jinya Yin
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84108, United States
| | - Ryan T VanderLinden
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84108, United States
| | - Jon D Rainier
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84108, United States
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2
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Liu Y, Liu J, Yan P, Kachanuban K, Liu P, Jia A, Zhu W. Carbazole and Quinazolinone Derivatives from a Fluoride-Tolerant Streptomyces Strain OUCMDZ-5511. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:6424-6431. [PMID: 38470989 DOI: 10.1021/acs.jafc.4c00780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/14/2024]
Abstract
Six new 9H-carbazole derivatives (1-6) and nine previously reported compounds (7-15) were isolated from a fermented solid medium of the Thailand mangrove-derived Streptomyces strain, OUCMDZ-5511, under fluoride stress. Compounds 2-5, 12, and 15 were exclusively present in the fluoride-supplemented fermentation medium, while compounds 7-9, 13, and 14 were newly discovered natural products. The molecular structures of the compounds were identified by a spectroscopic analysis. The new compound 2 displayed antiquorum sensing activity against Chromobacterium violaceum ATCC 12472 by reducing the violacein production and inhibiting the biofilm formation in a concentration-dependent manner. The study revealed that compound 2 could be a novel potential inhibitor of quorum sensing.
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Affiliation(s)
- Yue Liu
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Junsheng Liu
- Key Laboratory of Tropical Biological Resources of Ministry Education, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China
| | - Pengcheng Yan
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Konthorn Kachanuban
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
- Department of Fishery Product, Faculty of Fisheries of Kasetsart University, Bangkok 10900, Thailand
| | - Peipei Liu
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Aiqun Jia
- Key Laboratory of Tropical Biological Resources of Ministry Education, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China
| | - Weiming Zhu
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
- Key Laboratory for Marine Drugs and Bioproducts, Laoshan Laboratory, Qingdao 266237, China
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3
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Jha RK, Batabyal M, Kumar S. Blue Light Irradiated Metal-, Oxidant-, and Base-Free Cross-Dehydrogenative Coupling of C( sp2)-H and N-H Bonds: Amination of Naphthoquinones with Amines. J Org Chem 2023. [PMID: 37171187 DOI: 10.1021/acs.joc.3c00666] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Herein, we report a blue-light-driven amination of C(sp2)-H bond of naphthoquinones and quinones with the N-H bond of primary and secondary amines for the synthesis of 2-amino-naphthoquinones and 2-amino-quinones. The coupling of naphthoquinones with a wide array of aliphatic, aromatic, chiral, primary, and secondary amines having electron donating (-CH3, -OCH3, -SCH3), withdrawing (-F, -Cl, -Br, -I), and CO2H, -OH, -NH2 groups with acidic protons selectively occurred to afford C-N coupled 2-amino-naphthoquinones in 60-99% yields and hydrogen gas as a byproduct in methanol solvent without using any additional reagents, additives, and oxidant under the blue light irradiation. Mechanistic insight by DFT computation, controlled experiments, kinetic isotopic effect, and substitution effect of the substrates suggest that the reaction proceeds by radical pathway in which naphthoquinone forms a highly oxidizing naphthoquinonyl biradical upon irradiation of blue light (457 nm). Consequently, electron transfer from electron-rich amine to an oxidizing naphthoquinonyl biradical leads to a naphthoquinonyl radical anion and aminyl radical cation, followed by proton transfer and delocalization leading to a carbon-centered naphthoquinonyl radical. The cross-coupling of naphthoquinonyl carbon-centered and aminyl nitrogen radicals forms a C-N bond, with subsequent elimination of hydrogen gas (which was also confirmed by GC-TCD), affording 2-amino-1,4-naphthoquinone under metal-, reagent-, base-, and oxidant-free conditions.
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Affiliation(s)
- Raushan Kumar Jha
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal, Madhya Pradesh 462066, India
| | - Monojit Batabyal
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal, Madhya Pradesh 462066, India
| | - Sangit Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal, Madhya Pradesh 462066, India
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4
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Li M, Jin Y, Chen Y, Wu W, Jiang H. Palladium-Catalyzed Oxidative Amination of Unactivated Olefins with Primary Aliphatic Amines. J Am Chem Soc 2023; 145:9448-9453. [PMID: 37053042 DOI: 10.1021/jacs.3c02114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
Direct coupling of unactivated olefins with primary alkylamines is considered to be an efficient but unknown method for the construction of complex amines. Herein we report a catalytic intermolecular oxidative amination of unactivated olefins with primary aliphatic amines based on the combination of a palladium catalyst, a bidentate phosphine ligand, and duroquinone. A range of secondary allylic amines were obtained in good yields with excellent regio- and stereoselectivity. Mechanistic control experiments revealed that the reaction proceeds by allylic C(sp3)-H activation and nucleophilic amination. The utility of the protocol is further demonstrated with the late-stage modification and streamlined synthesis of drug molecules.
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Affiliation(s)
- Mingda Li
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yangbin Jin
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yupeng Chen
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
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5
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Liu R, Shen ML, Fan LF, Zhou XL, Wang PS, Gong LZ. Palladium-Catalyzed Branch- and Z-Selective Allylic C-H Amination with Aromatic Amines. Angew Chem Int Ed Engl 2023; 62:e202211631. [PMID: 36399016 DOI: 10.1002/anie.202211631] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 11/17/2022] [Accepted: 11/18/2022] [Indexed: 11/19/2022]
Abstract
Allylamines are important building blocks in the synthesis of bioactive compounds. The direct coupling of allylic C-H bonds and commonly available amines is a major synthetic challenge. An allylic C-H amination of 1,4-dienes has been accomplished by palladium catalysis. With aromatic amines, branch-selective allylic aminations are favored to generate thermodynamically unstable Z-allylamines. In addition, more basic aliphatic cyclic amines can also engage in the reaction, but linear dienyl allylic amines are the major products.
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Affiliation(s)
- Rui Liu
- Department of Chemistry, University of Science and Technology of China, No.96, Jinzhai Road, Baohe District, Hefei, 230026, P. R.China
| | - Meng-Lan Shen
- Department of Chemistry, University of Science and Technology of China, No.96, Jinzhai Road, Baohe District, Hefei, 230026, P. R.China
| | - Lian-Feng Fan
- Department of Chemistry, University of Science and Technology of China, No.96, Jinzhai Road, Baohe District, Hefei, 230026, P. R.China
| | - Xiao-Le Zhou
- Department of Chemistry, University of Science and Technology of China, No.96, Jinzhai Road, Baohe District, Hefei, 230026, P. R.China
| | - Pu-Sheng Wang
- Department of Chemistry, University of Science and Technology of China, No.96, Jinzhai Road, Baohe District, Hefei, 230026, P. R.China
| | - Liu-Zhu Gong
- Department of Chemistry, University of Science and Technology of China, No.96, Jinzhai Road, Baohe District, Hefei, 230026, P. R.China
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6
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Karmakar P, Karmakar I, Pal D, Das S, Brahmachari G. Electrochemical Regioselective C( sp2)-H Selenylation and Sulfenylation of Substituted 2-Amino-1,4-naphthoquinones. J Org Chem 2023; 88:1049-1060. [PMID: 36599149 DOI: 10.1021/acs.joc.2c02486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A straightforward and efficient electrochemical method for regioselective C(sp2)-H selenylation and sulfenylation of substituted 2-amino-1,4-naphthoquinones has been unearthed. This oxidative cross-coupling reaction avoids using transition metal catalysts, oxidants, and high temperatures. The other notable advantages of this protocol are the tolerance of diverse functional groups, mild reaction conditions at ambient temperature, energy efficiency, good to excellent yields, short reaction times (in minutes), gram-scale applicability, and eco-friendliness.
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Affiliation(s)
- Pintu Karmakar
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (a Central University), Santiniketan 731 235, West Bengal, India
| | - Indrajit Karmakar
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (a Central University), Santiniketan 731 235, West Bengal, India
| | - Debopam Pal
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (a Central University), Santiniketan 731 235, West Bengal, India
| | - Suravi Das
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (a Central University), Santiniketan 731 235, West Bengal, India
| | - Goutam Brahmachari
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (a Central University), Santiniketan 731 235, West Bengal, India
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7
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Modular total syntheses of trans-clerodanes and sesquiterpene (hydro)quinones via tail-to-head cyclization and reductive coupling strategies. Nat Commun 2022; 13:6633. [PMID: 36333313 PMCID: PMC9636166 DOI: 10.1038/s41467-022-34404-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 10/24/2022] [Indexed: 11/06/2022] Open
Abstract
The trans-clerodanes and sesquiterpene (hydro)quinones are a growing class of natural products that exhibit a wide range of biological activities. Although they are different types of natural products, some of them feature the same trans-decalin core structure. Here, we report the total syntheses of two members of trans-clerodanes, five members of sesquiterpene (hydro)quinones as well as the proposed structure of dysidavarone D via a modular synthetic route. A bioinspired tail-to-head cyclization strategy was developed to syntheses of the trans-decalin architectures by using two diastereochemically complementary radical polyene cyclization reactions catalyzed by Ti(III) and mediated by Mn(III), respectively. The different types of side chains were introduced by challenging nickel catalyzed reductive couplings of sterically hindered alkyl halides. The synthesis of the proposed dysidavarone D proved a wrong structural assignment of the natural product.
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8
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Abstract
The total synthesis of marine alkaloids cystodytins A-K has been accomplished in five to six steps starting from commercially available compounds. The highlights of the synthesis include an oxidative amination-cyclization of tryptamine and para-hydroquinones to build a tetracyclic pyridoacridinone ring with different side chains and a copper(II)-catalyzed enantioselective Henry reaction to construct an oxygenated stereogenic carbon center. For the first time, the absolute configuration of the stereogenic centers embedded in cystodytins D-I and K was established as R. Moreover, the stereochemistry of the olefin unit in the side chain of cystodytins H and I was revised to the Z configuration from the originally assigned E configuration.
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Affiliation(s)
- Dongfang Jiang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yang Chen
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Shaozhong Wang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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9
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Li J, Li YA, Wu G, Zhang X. Metal-Free Aminohalogenation of Quinones With Alkylamines and NXS at Room Temperature. Front Chem 2022; 10:917371. [PMID: 35707457 PMCID: PMC9189915 DOI: 10.3389/fchem.2022.917371] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 04/19/2022] [Indexed: 12/03/2022] Open
Abstract
A simple and practical strategy for intermolecular aminohalogenation of quinone with alkyl amines and NXS was developed, in which haloamines generated in situ were employed as bifunctional reagents. The reaction system is reliable, efficient and wide in substrate range, which is suitable for the two-fold aminochlorination of 1, 4-benzoquinones, large-scale reaction and late-stage modification of pharmaceuticals.
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Affiliation(s)
- Jia Li
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yu-An Li
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, China
- *Correspondence: Yu-An Li, ; Ge Wu,
| | - Ge Wu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
- *Correspondence: Yu-An Li, ; Ge Wu,
| | - Xu Zhang
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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10
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Caprioglio D, Mattoteia D, Muñoz E, Taglialatela‐Scafati O, Appendino G. One‐Pot Oxidative Heterofunctionalization of Resorcinolic Cannabinoids to Non‐thiophilic Aminocannabinoquinones. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Diego Caprioglio
- Dipartimento di Scienze del Farmaco Università degli Studi del Piemonte Orientale Largo Donegani 2 28100 Novara Italy
| | - Daiana Mattoteia
- Dipartimento di Scienze del Farmaco Università degli Studi del Piemonte Orientale Largo Donegani 2 28100 Novara Italy
| | - Eduardo Muñoz
- Instituto Maimónides de Investigación Biomédica de Córdoba 14004 Córdoba Spain
- Departamento de Biología Celular Fisiología e Inmunología Universidad de Córdoba 14071 Córdoba Spain
- Hospital Universitario Reina Sofía 14004 Córdoba Spain
| | | | - Giovanni Appendino
- Dipartimento di Scienze del Farmaco Università degli Studi del Piemonte Orientale Largo Donegani 2 28100 Novara Italy
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11
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Pal S, Chatterjee R, Santra S, Zyryanov GV, Majee A. Metal‐Free, PhI(OAc)
2
‐Promoted Oxidative C(
sp
2
)−H Difunctionalization: Synthesis of Thioaminated Naphthoquinones. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100796] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Satyajit Pal
- Department of Chemistry Visva-Bharati (A Central University) Santiniketan 731235 India
| | - Rana Chatterjee
- Department of Chemistry Visva-Bharati (A Central University) Santiniketan 731235 India
| | - Sougata Santra
- Department of Organic and Biomolecular Chemistry, Chemical Engineering Institute Ural Federal University 19 Mira Street 620002 Yekaterinburg Russian Federation
| | - Grigory V. Zyryanov
- Department of Organic and Biomolecular Chemistry, Chemical Engineering Institute Ural Federal University 19 Mira Street 620002 Yekaterinburg Russian Federation
- I. Ya. Postovskiy Institute of Organic Synthesis Ural Division of the Russian Academy of Sciences 22 S. Kovalevskoy Street 620219 Yekaterinburg Russian Federation
| | - Adinath Majee
- Department of Chemistry Visva-Bharati (A Central University) Santiniketan 731235 India
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12
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Lu Z, Chong C. Bioinspired Total Synthesis of Marine Anticancer Meroterpenoids Dysideanone B and Dysiherbol A and Structure Revision of Dysiherbol A. Synlett 2021. [DOI: 10.1055/a-1546-2572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
AbstractOur recent progress on the total synthesis of marine anticancer sesquiterpene quinone/hydroquinone dysideanone B and dysiherbol A is briefly highlighted. This success relied on some key transformations. The union of the terpene and quinone/hydroquinone moieties was realized through a site and stereoselective α-position alkylation of Wieland–Miescher ketone derivative with a bulky benzyl bromide. The 6/6/6/6-tetracycle of dysideanone B was constructed using an intramolecular radical cyclization and the 6/6/5/6-fused core structure of dysiherbol A was forged by an intramolecular Heck reaction, respectively. The possible origin of ethoxy group in dysideanone B was revealed by mimicking the isolation conditions at a late stage. The structure of dysiherbol A was revised through the total synthesis of this natural product. Schmalz’s synthesis of dysiherbol A was also included.
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13
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Lu C, Liao X, Fang D, Chen X. Highly Sensitive Ultrastable Electrochemical Sensor Enabled by Proton-Coupled Electron Transfer. NANO LETTERS 2021; 21:5369-5376. [PMID: 34125559 DOI: 10.1021/acs.nanolett.1c01692] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Electrochemical sensors are critical to artificial intelligence by virtue of capability of mimicking human skin to report sensing signals. But their practical applications are restricted by low sensitivity and limited cycling stability, which result from piezoionic mechanism with insufficient sensing response. Here, we report a highly sensitive ultrastable sensor based on proton-coupled electron transfer, which is different from piezoionic mechanism. The sensor gives a high sensing signal output of 117 mV, which is 16 times higher than that of counterpart device (7 mV). It delivers excellent working stability with performance retention as high as 99.13% over 10 000 bending cycles in air, exceeding that of the best-known sensors reported previously. The flexible sensor displays high sensitivity in detecting real-time signals of human activities with large and subtle deformations, including wrist bending, moving speed, pulse wave and voice vibration. Smart functions, such as braille language and handwriting recognitions, are demonstrated for artificial intelligence.
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Affiliation(s)
- Chao Lu
- Department of Earth and Environmental Engineering, Columbia University, New York, New York 10027, United States
| | - Xiangbiao Liao
- Department of Earth and Environmental Engineering, Columbia University, New York, New York 10027, United States
- Institute of Advanced Structure Technology, Beijing Institute of Technology, 100081 Beijing, China
| | - Daining Fang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, 100081 Beijing, China
| | - Xi Chen
- Department of Earth and Environmental Engineering, Columbia University, New York, New York 10027, United States
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14
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Chong C, Zhang Q, Ke J, Zhang H, Yang X, Wang B, Ding W, Lu Z. Total Synthesis of Anti‐Cancer Meroterpenoids Dysideanone B and Dysiherbol A and Structural Reassignment of Dysiherbol A. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202100541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Chuanke Chong
- State Key Laboratory of Medicinal Chemical Biology College of Pharmacy Nankai University 38 Tongyan Rd Tianjin 300350 China
| | - Qunlong Zhang
- State Key Laboratory of Medicinal Chemical Biology College of Pharmacy Nankai University 38 Tongyan Rd Tianjin 300350 China
| | - Jia Ke
- State Key Laboratory of Medicinal Chemical Biology College of Pharmacy Nankai University 38 Tongyan Rd Tianjin 300350 China
| | - Haiming Zhang
- State Key Laboratory of Medicinal Chemical Biology College of Pharmacy Nankai University 38 Tongyan Rd Tianjin 300350 China
| | - Xudong Yang
- State Key Laboratory of Medicinal Chemical Biology College of Pharmacy Nankai University 38 Tongyan Rd Tianjin 300350 China
| | - Bingjian Wang
- State Key Laboratory of Medicinal Chemical Biology College of Pharmacy Nankai University 38 Tongyan Rd Tianjin 300350 China
| | - Wei Ding
- Tianjin Key Laboratory of Human Development and Reproductive Regulation Tianjin Central Hospital of Gynecology Obstetrics Nankai University 156 Third Rd Tianjin 300052 China
| | - Zhaoyong Lu
- State Key Laboratory of Medicinal Chemical Biology College of Pharmacy Nankai University 38 Tongyan Rd Tianjin 300350 China
- State Key Laboratory of Natural Medicines China Pharmaceutical University 24 Tongjiaxiang Nanjing 210009 China
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15
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Chong C, Zhang Q, Ke J, Zhang H, Yang X, Wang B, Ding W, Lu Z. Total Synthesis of Anti-Cancer Meroterpenoids Dysideanone B and Dysiherbol A and Structural Reassignment of Dysiherbol A. Angew Chem Int Ed Engl 2021; 60:13807-13813. [PMID: 33847042 DOI: 10.1002/anie.202100541] [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: 01/13/2021] [Revised: 03/30/2021] [Indexed: 01/01/2023]
Abstract
The first total synthesis of marine anti-cancer meroterpenoids dysideanone B and dysiherbol A have been accomplished in a divergent way. The synthetic route features: 1) a site and stereoselective α-position alkylation of a Wieland-Miescher ketone derivative with a bulky benzyl bromide to join the terpene and aromatic moieties together and set the stage for subsequent cyclization reactions; 2) an intramolecular radical cyclization to construct the 6/6/6/6-tetracycle of dysideanone B and an intramolecular Heck reaction to forge the 6/6/5/6-fused core structure of dysiherbol A. A late-stage introduction of the ethoxy group in dysideanone B reveals that this group might come from the solvent ethanol. The structure of dysiherbol A has been revised based on our chemical total synthesis.
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Affiliation(s)
- Chuanke Chong
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, 38 Tongyan Rd, Tianjin, 300350, China
| | - Qunlong Zhang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, 38 Tongyan Rd, Tianjin, 300350, China
| | - Jia Ke
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, 38 Tongyan Rd, Tianjin, 300350, China
| | - Haiming Zhang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, 38 Tongyan Rd, Tianjin, 300350, China
| | - Xudong Yang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, 38 Tongyan Rd, Tianjin, 300350, China
| | - Bingjian Wang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, 38 Tongyan Rd, Tianjin, 300350, China
| | - Wei Ding
- Tianjin Key Laboratory of Human Development and Reproductive Regulation, Tianjin Central Hospital of Gynecology Obstetrics, Nankai University, 156 Third Rd, Tianjin, 300052, China
| | - Zhaoyong Lu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, 38 Tongyan Rd, Tianjin, 300350, China.,State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, China
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16
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Tran N, Do Van Thanh N, Le MLP. Organic Positive Materials for Magnesium Batteries: A Review. Chemistry 2021; 27:9198-9217. [DOI: 10.1002/chem.202100223] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Indexed: 12/18/2022]
Affiliation(s)
- Ngoc‐Anh Tran
- Lepmi Univ. Grenoble Alpes Univ. Savoie Mont Blanc, CNRS, Grenoble INP 38000 Grenoble France
| | - Nhan Do Van Thanh
- Chemistry Department University of Alberta Edmonton Alberta T6G 2G2 Canada
| | - My Loan Phung Le
- Applied Physical Chemistry Laboratory (APCLab) University of Science – Vietnam National University – Ho Chi Minh City (VNU-HCM) 227 Nguyen Van Cu Street District 5 Ho Chi Minh City Vietnam
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17
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Wang Z, Hui C. Contemporary advancements in the semi-synthesis of bioactive terpenoids and steroids. Org Biomol Chem 2021; 19:3791-3812. [PMID: 33949606 DOI: 10.1039/d1ob00448d] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Many natural products have intriguing biological properties that arise from their fascinating chemical structures. However, the intrinsic complexity of the structural skeleton and the reactive functional groups on natural products pose tremendous challenges to chemical syntheses. Semi-synthesis uses chemical compounds isolated from natural sources as the starting materials to produce other novel compounds with distinct chemical and medicinal properties. In particular, advancements in various types of sp3 C-H bond functionalization reactions and skeletal rearrangement methods have contributed to the re-emergence of semi-synthesis as an efficient approach for the synthesis of structurally complex bioactive natural products. Here, we begin with a brief discussion of several bioactive natural products that were obtained via a semi-synthetic approach between 2008 and 2015 and we then discuss in-depth contemporary advancements in the semi-synthesis of bioactive terpenoids and steroids reported during 2016-2020.
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Affiliation(s)
- Zhuo Wang
- Southern University of Science and Technology, School of Medicine, Shenzhen, 518055, People's Republic of China.
| | - Chunngai Hui
- Division of Life Science, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong 999077, China
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18
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Poulsen TB. Total Synthesis of Natural Products Containing Enamine or Enol Ether Derivatives. Acc Chem Res 2021; 54:1830-1842. [PMID: 33660974 DOI: 10.1021/acs.accounts.0c00851] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Enamine and enol ethers are nucleophilic functional groups that are well known to most chemists. When enamine or enol ethers are present in natural products, they are nearly exclusively found as derivatives having a direct connection to electron-withdrawing groups for stabilization, and the resulting larger entities, such as enamides or enol acylates, can be further extended or modified in the framework of natural products. The restricted conformational space that is associated with even simple enamine and enol ether derivatives can be a strong determinant of the overall molecular structure, and the more polarized derivatives can endow some natural products with electrophilic properties and thus facilitate covalent interactions with biological targets.In this Account, I describe our efforts (published since 2016) to prepare natural products from several different classes that all feature enamine or enol ether derivatives as key functionalities. Our choice of targets has been guided by a desire to illuminate unknown biological mechanisms associated with the compounds or, alternatively, to improve upon known biological activities that appear to be promising from a biomedical perspective. In the present text, however, the exclusive focus will be on the syntheses.First, I will discuss the basic properties of the functional groups and briefly present a small collection of illustrative and inspirational examples from the literature for their construction in different complex settings. Next, I will provide an overview of our work on the macrocyclic APD-CLD natural products, rakicidin A and BE-43547A1, involving the development of an efficient macrocyclization strategy and the development of methods to construct the hallmark APD group: a modified enamide. The synthesis of the meroterpenoid strongylophorine-26 is discussed next, where we developed an oxidative quinone methoxylation to build a vinylogous ester group in the final step of the synthesis and employed FeCl3-mediated cascade reactions for the rapid assembly of the overall scaffold to enable a short semisynthesis from isocupressic acid. An efficient core scaffold assembly was also in focus in our synthesis of the alkaloid streptazone A with the signature enaminone system being assembled through a rhodium-catalyzed Pauson-Khand reaction. Sequential, site-selective redox manipulations were developed to arrive at strepatzone A and additional members of the natural product family. Finally, I discuss our work to prepare analogs of complex polyether ionophores featuring functionalized tetronic acids as cation-binding groups. A method for the construction of a suitably protected chloromethylidene-modified tetronate is presented which enabled its installation in the full structure through a C-acylation reaction. This work exemplifies how components of abundant polyether ionophores can be recycled and used to access new structures which may possess enhanced biological activities.
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Affiliation(s)
- Thomas B. Poulsen
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
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19
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20
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Kumar S, Mahajan B, Malviya BK, Sukumar G, Srihari P, Singh AK. Electricity-induced micro-flow C–H/N–H alkyne annulation: a greener approach to access heteroaromatic compounds. REACT CHEM ENG 2021. [DOI: 10.1039/d1re00260k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Fast access to structurally diverse heteroaromatic compounds is demonstrated in an integrated continuous-flow manner without employing any expensive oxidant.
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Affiliation(s)
- Sanjeev Kumar
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Human Resource Development Centre (CSIR-HRDC) Campus, Ghaziabad 201002, Uttar Pradesh, India
| | - Bhushan Mahajan
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Human Resource Development Centre (CSIR-HRDC) Campus, Ghaziabad 201002, Uttar Pradesh, India
| | - Bhanwar Kumar Malviya
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
| | - Genji Sukumar
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
| | - P. Srihari
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Human Resource Development Centre (CSIR-HRDC) Campus, Ghaziabad 201002, Uttar Pradesh, India
| | - Ajay K. Singh
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Human Resource Development Centre (CSIR-HRDC) Campus, Ghaziabad 201002, Uttar Pradesh, India
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21
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Bashir MA, Zuo H, Lu X, Wu Y, Zhong F. Harnessing structurally unbiased ortho-benzoquinone monoimine for biomimetic oxidative [4+2] cycloaddition with enamines. Chem Commun (Camb) 2020; 56:5965-5968. [DOI: 10.1039/d0cc01813a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reported herein is the first catalytic oxidative [4+2] cycloaddition of 2-aminophenols with cyclic enamines.
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Affiliation(s)
- Muhammad Adnan Bashir
- Key laboratory of Material Chemistry for Energy Conversion and Storage
- Ministry of Education
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology (HUST)
| | - Honghua Zuo
- Key laboratory of Material Chemistry for Energy Conversion and Storage
- Ministry of Education
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology (HUST)
| | - Xunbo Lu
- Key laboratory of Material Chemistry for Energy Conversion and Storage
- Ministry of Education
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology (HUST)
| | - Yuzhou Wu
- Key laboratory of Material Chemistry for Energy Conversion and Storage
- Ministry of Education
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology (HUST)
| | - Fangrui Zhong
- Key laboratory of Material Chemistry for Energy Conversion and Storage
- Ministry of Education
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology (HUST)
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22
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Adarsh Krishna TP, Pandaram S, Chinnasamy S, Ilangovan A. Oxidative radical coupling of hydroquinones and thiols using chromic acid: one-pot synthesis of quinonyl alkyl/aryl thioethers. RSC Adv 2020; 10:19454-19462. [PMID: 35515459 PMCID: PMC9054077 DOI: 10.1039/d0ra01519a] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 05/11/2020] [Indexed: 12/21/2022] Open
Abstract
An efficient, simple and practical protocol for one-pot sequential oxidative radical C–H/S–H cross-coupling of thiols with hydroquinones (HQs) and oxidation leading to the formation of quinonyl alkyl/aryl thioethers using H2CrO4 was developed. This cross-coupling of thiyl and aryl radicals offers mono thioethers in good to moderate yield and works well with a wide variety of thiols. Similarly, this method works well for coupling of 2-amino thiophenol and HQs to form phenothiazine-3-ones 5a–c. C–S bond formation via thioether synthesis was observed using a chromium reagent for the first time. Theoretical studies on the pharmacokinetic properties of compounds 5a–c revealed that due to drug-like properties, compound 5b strongly binds with Alzheimer's disease (AD) associated AChE target sites. Oxidative radical C–H/S–H cross coupling of hydroquinones and thiols and oxidation to quinone using a H2CrO4 system was developed.![]()
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23
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Yu C, Patureau FW. Regioselective Oxidative Arylation of Fluorophenols. Angew Chem Int Ed Engl 2019; 58:18530-18534. [PMID: 31584740 PMCID: PMC6916641 DOI: 10.1002/anie.201910352] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/24/2019] [Indexed: 11/08/2022]
Abstract
A metal free and highly regioselective oxidative arylation reaction of fluorophenols is described. The relative position of the fluoride leaving group (i.e., ortho or para) controls the 1,2 or 1,4 nature of the arylated quinone product, lending versatility and generality to this oxidative, defluorinative, arylation concept.
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Affiliation(s)
- Congjun Yu
- Institute of Organic Chemistry, RWTH, Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Frederic W Patureau
- Institute of Organic Chemistry, RWTH, Aachen University, Landoltweg 1, 52074, Aachen, Germany
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24
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Affiliation(s)
- Congjun Yu
- Institut für Organische ChemieRWTH Aachen University Landoltweg 1 52074 Aachen Deutschland
| | - Frederic W. Patureau
- Institut für Organische ChemieRWTH Aachen University Landoltweg 1 52074 Aachen Deutschland
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25
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Ciftci HI, Bayrak N, Yıldırım H, Yıldız M, Radwan MO, Otsuka M, Fujita M, Tuyun AF. Discovery and structure–activity relationship of plastoquinone analogs as anticancer agents against chronic myelogenous leukemia cells. Arch Pharm (Weinheim) 2019; 352:e1900170. [DOI: 10.1002/ardp.201900170] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 09/03/2019] [Accepted: 09/07/2019] [Indexed: 01/09/2023]
Affiliation(s)
- Halil I. Ciftci
- Department of Drug DiscoveryScience Farm Ltd Kumamoto Japan
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life SciencesKumamoto University Kumamoto Japan
| | - Nilüfer Bayrak
- Department of Chemistry, Faculty of EngineeringIstanbul University‐Cerrahpasa Istanbul Turkey
| | - Hatice Yıldırım
- Department of Chemistry, Faculty of EngineeringIstanbul University‐Cerrahpasa Istanbul Turkey
| | - Mahmut Yıldız
- Department of ChemistryGebze Technical University Kocaeli Turkey
| | - Mohamed O. Radwan
- Department of Drug DiscoveryScience Farm Ltd Kumamoto Japan
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life SciencesKumamoto University Kumamoto Japan
- Department of Chemistry of Natural Compounds, Pharmaceutical and Drug Industries Research DivisionNational Research Centre Cairo Egypt
| | - Masami Otsuka
- Department of Drug DiscoveryScience Farm Ltd Kumamoto Japan
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life SciencesKumamoto University Kumamoto Japan
| | - Mikako Fujita
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life SciencesKumamoto University Kumamoto Japan
| | - Amaç F. Tuyun
- Department of Engineering Sciences, Engineering FacultyIstanbul University‐Cerrahpasa Istanbul Turkey
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26
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Abstract
The first enantioselective total syntheses of highly complex hexacyclic meroterpenoids STR-2 and -9 (strongylophorine (STR)) are reported. Key elements of the synthetic route include the use of Robinson-type annulation reaction to construct the tricyclic terpenoid building block and a highly efficient PIDA-mediated 1,3-diaxial sp3 C-H activation to incorporate the requisite δ-lactone moiety. This route also enables the determination of absolute configuration of the synthesized natural products.
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Affiliation(s)
- Dattatraya H Dethe
- Department of Chemistry , Indian Institute of Technology , Kanpur , Uttar Pradesh 208016 , India
| | - Susanta Kumar Sau
- Department of Chemistry , Indian Institute of Technology , Kanpur , Uttar Pradesh 208016 , India
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27
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Xu W, Huang Z, Ji X, Lumb JP. Catalytic Aerobic Cross-Dehydrogenative Coupling of Phenols and Catechols. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04443] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Wenbo Xu
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, China
| | - Zheng Huang
- Department of Chemistry, McGill University, Montreal, QC H3A 0B8, Canada
| | - Xiang Ji
- Department of Chemistry, McGill University, Montreal, QC H3A 0B8, Canada
| | - Jean-Philip Lumb
- Department of Chemistry, McGill University, Montreal, QC H3A 0B8, Canada
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28
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Affiliation(s)
- Yijun Wang
- School of Basic Medical Sciences; Zhengzhou University; Science Avenue 100 Zhengzhou 450001 P. R. China
| | - Shuai Zhu
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology; Ministry of Education, School of Pharmaceutical Sciences; Jiangnan University; Lihu Avenue 1800 Wuxi 214122 P. R. China
| | - Liang-Hua Zou
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology; Ministry of Education, School of Pharmaceutical Sciences; Jiangnan University; Lihu Avenue 1800 Wuxi 214122 P. R. China
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29
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Rajasekar S, Krishna TPA, Tharmalingam N, Andivelu I, Mylonakis E. Metal-Free C-H Thiomethylation of Quinones Using Iodine and DMSO and Study of Antibacterial Activity. ChemistrySelect 2019. [DOI: 10.1002/slct.201803816] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Sakthidevi Rajasekar
- School of Chemistry; Bharathidasan University, Tiruchirappalli; Tamilnadu-620024 India
| | - T. P. Adarsh Krishna
- School of Chemistry; Bharathidasan University, Tiruchirappalli; Tamilnadu-620024 India
| | - Nagendran Tharmalingam
- Infectious Diseases Division; Warren Alpert Medical School of Brown University, Rhode Island Hospital, Providance; RI 02903 USA
| | - Ilangovan Andivelu
- School of Chemistry; Bharathidasan University, Tiruchirappalli; Tamilnadu-620024 India
| | - Eleftherios Mylonakis
- Infectious Diseases Division; Warren Alpert Medical School of Brown University, Rhode Island Hospital, Providance; RI 02903 USA
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30
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Zeng FL, Chen XL, He SQ, Sun K, Liu Y, Fu R, Qu LB, Zhao YF, Yu B. Copper-catalyzed one-pot three-component thioamination of 1,4-naphthoquinone. Org Chem Front 2019. [DOI: 10.1039/c9qo00091g] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A concise one-pot three-component thioamination of 1,4-naphthoquinone with thiols and amines was developed to synthesize 2-amino-3-thio-1,4-naphthoquinones.
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Affiliation(s)
- Fan-Lin Zeng
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Xiao-Lan Chen
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
- The Key Laboratory for Chemical Biology of Fujian Province
| | - Shuai-Qi He
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Kai Sun
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Yan Liu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
- College of Biological and Pharmaceutical Engineering
| | - Rui Fu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Ling-Bo Qu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Yu-Fen Zhao
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
- The Key Laboratory for Chemical Biology of Fujian Province
| | - Bing Yu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
- Henan Nonferrous Metals Geological Exploration Institute
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