1
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Chang X, Zhang F, Zhu S, Yang Z, Feng X, Liu Y. Photoredox-catalyzed diastereoselective dearomative prenylation and reverse-prenylation of electron-deficient indole derivatives. Nat Commun 2023; 14:3876. [PMID: 37391418 PMCID: PMC10313782 DOI: 10.1038/s41467-023-39633-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 06/20/2023] [Indexed: 07/02/2023] Open
Abstract
Prenylated and reverse-prenylated indolines are privileged scaffolds in numerous naturally occurring indole alkaloids with a broad spectrum of important biological properties. Development of straightforward and stereoselective methods to enable the synthesis of structurally diverse prenylated and reverse-prenylated indoline derivatives is highly desirable and challenging. In this context, the most direct approaches to achieve this goal generally rely on transition-metal-catalyzed dearomative allylic alkylation of electron-rich indoles. However, the electron-deficient indoles are much less explored, probably due to their diminished nucleophilicity. Herein, a photoredox-catalyzed tandem Giese radical addition/Ireland-Claisen rearrangement is disclosed. Diastereoselective dearomative prenylation and reverse-prenylation of electron-deficient indoles proceed smoothly under mild conditions. An array of tertiary α-silylamines as radical precursors is readily incorporated in 2,3-disubstituted indolines with high functional compatibility and excellent diastereoselectivity (>20:1 d.r.). The corresponding transformations of the secondary α-silylamines provide the biologically important lactam-fused indolines in one-pot synthesis. Subsequently, a plausible photoredox pathway is proposed based on control experiments. The preliminary bioactivity study reveals a potential anticancer property of these structurally appealing indolines.
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Affiliation(s)
- Xuexue Chang
- Institute of Chemical Biology, Shenzhen Bay Laboratory, Shenzhen, 518132, China
| | - Fangqing Zhang
- Institute of Chemical Biology, Shenzhen Bay Laboratory, Shenzhen, 518132, China
| | - Shibo Zhu
- Institute of Chemical Biology, Shenzhen Bay Laboratory, Shenzhen, 518132, China
| | - Zhuang Yang
- State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Xiaoming Feng
- Institute of Chemical Biology, Shenzhen Bay Laboratory, Shenzhen, 518132, China.
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China.
| | - Yangbin Liu
- Institute of Chemical Biology, Shenzhen Bay Laboratory, Shenzhen, 518132, China.
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2
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Harnedy J, Maashi HA, El Gehani AAMA, Burns M, Morrill LC. Deconstructive Functionalization of Unstrained Cycloalkanols via Electrochemically Generated Aromatic Radical Cations. Org Lett 2023; 25:1486-1490. [PMID: 36847269 PMCID: PMC10012273 DOI: 10.1021/acs.orglett.3c00219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
Herein we report an electrochemical approach for the deconstructive functionalization of cycloalkanols, where various alcohols, carboxylic acids, and N-heterocycles are employed as nucleophiles. The method has been demonstrated across a broad range of cycloalkanol substrates, including various ring sizes and substituents, to access useful remotely functionalized ketone products (36 examples). The method was demonstrated on a gram scale via single-pass continuous flow, which exhibited increased productivity in relation to the batch process.
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Affiliation(s)
- James Harnedy
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - Hussain A Maashi
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - Albara A M A El Gehani
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - Matthew Burns
- Chemical Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield SK10 2NA, U.K
| | - Louis C Morrill
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
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3
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Karpe SA, Mondal D. Synthesis of 3‐Hydroxy‐2‐oxindole and 2,5‐Diketopiperazine Cores as Privileged Scaffolds of Indole Alkaloids. ChemistrySelect 2022. [DOI: 10.1002/slct.202202516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sameer A. Karpe
- School of Chemical Sciences Central University of Gujarat 382030 Gandhinagar Gujarat India
| | - Dhananjoy Mondal
- School of Chemical Sciences Central University of Gujarat 382030 Gandhinagar Gujarat India
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4
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Saleh SA, Hazra A, Singh MS, Hajra S. Selective C3-Allylation and Formal [3 + 2]-Annulation of Spiro-Aziridine Oxindoles: Synthesis of 5'-Substituted Spiro[pyrrolidine-3,3'-oxindoles] and Coerulescine. J Org Chem 2022; 87:8656-8671. [PMID: 35731944 DOI: 10.1021/acs.joc.2c00863] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Brønsted acid- and/or Lewis acid-catalyzed selective C3-allylation and formal [3 + 2]-annulation of spiro-aziridine oxindoles with allylsilanes have been demonstrated to deliver direct access to 3-allyl-3-aminomethyl oxindoles and 5-silyl methyl spiro[pyrrolidine-3,3'-oxindoles], respectively. The acid-catalyzed methods do not provide any stereoselectivity when chiral spiroaziridines are used. However, the reaction of nonracemic sprioaziridines with allyl-Grignard reagent under catalyst-free conditions afforded 3-allyl-3-aminomethyl oxindoles with good stereoselectivity (ee up to 80%). The allylation protocol is utilized for the short synthesis of coerulescine and various 5'-substituted spiro[pyrrolidine-3,3'-oxindoles].
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Affiliation(s)
- Sk Abu Saleh
- Centre of Biomedical Research, Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus, Raebareli Road, Lucknow 226014, India.,Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Atanu Hazra
- Centre of Biomedical Research, Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus, Raebareli Road, Lucknow 226014, India.,Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Maya Shankar Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Saumen Hajra
- Centre of Biomedical Research, Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus, Raebareli Road, Lucknow 226014, India
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5
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Shen X, Peng T, Wang F, Li S, Lei X, Yunxiao, Wang, Cheng F, Liu T. Copper(I)‐Catalyzed Cascade Cyclization to the Total Synthesis of Hexahydropyrroloindole Alkaloids: Flustramine B and Debromoflustramine B. ChemistrySelect 2021. [DOI: 10.1002/slct.202101134] [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)
- Xianfu Shen
- College of Chemistry and Environmental Science College of Biological Resource and Food Engineering Qujing Normal University Qujing 655011 P. R. China
| | - Tianfeng Peng
- College of Chemistry and Environmental Science College of Biological Resource and Food Engineering Qujing Normal University Qujing 655011 P. R. China
| | - Fan Wang
- College of Chemistry and Environmental Science College of Biological Resource and Food Engineering Qujing Normal University Qujing 655011 P. R. China
| | - Shumin Li
- College of Chemistry and Environmental Science College of Biological Resource and Food Engineering Qujing Normal University Qujing 655011 P. R. China
| | - Xingfu Lei
- College of Chemistry and Environmental Science College of Biological Resource and Food Engineering Qujing Normal University Qujing 655011 P. R. China
| | - Yunxiao
- College of Chemistry and Environmental Science College of Biological Resource and Food Engineering Qujing Normal University Qujing 655011 P. R. China
| | - Wang
- College of Chemistry and Environmental Science College of Biological Resource and Food Engineering Qujing Normal University Qujing 655011 P. R. China
| | - Feixiang Cheng
- College of Chemistry and Environmental Science College of Biological Resource and Food Engineering Qujing Normal University Qujing 655011 P. R. China
| | - Teng Liu
- College of Chemistry and Environmental Science College of Biological Resource and Food Engineering Qujing Normal University Qujing 655011 P. R. China
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6
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Deng Q, Yu A, Zhang L, Meng X. Selective Synthesis of Benzothiophene‐Fused Polycyclic, Eight‐Membered N‐Heterocycles via Amine‐Mediated Three‐Component Domino Strategy. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001129] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Qingsong Deng
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion School of Chemistry & Chemical Engineering Tianjin University of Technology Tianjin 300384 People's Republic of China
| | - Aimin Yu
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion School of Chemistry & Chemical Engineering Tianjin University of Technology Tianjin 300384 People's Republic of China
| | - Lei Zhang
- Tianjin Engineering Technology Center of Chemical Wastewater Source Reduction and Recycling School of Science, Tianjin Chengjian University Tianjin 300384 People's Republic of China
- College of Chemistry Beijing Normal University Beijing 100875 People's Republic of China
| | - Xiangtai Meng
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion School of Chemistry & Chemical Engineering Tianjin University of Technology Tianjin 300384 People's Republic of China
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7
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Deng Q, Yu A, Zhou J, Cao Q, Meng X. Construction of Benzothiophene or Benzothiopheno[2,3- e]azepinedione Derivatives via Three-Component Domino or One-Pot Sequences. J Org Chem 2020; 85:12270-12283. [PMID: 32883080 DOI: 10.1021/acs.joc.0c01505] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
An efficient three-component domino or one-pot strategy has been developed for the synthesis of medicinally important benzothiophene and benzothiopheno[2,3-e]azepinedione derivatives for the first time. Amine-promoted selective cleavage of C-S bond of thioisatin is the key step in this process. The reported methodology benefits from environmentally friendly solvent (H2O), wide substrate scope, good functional group tolerance, and high reaction yields.
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Affiliation(s)
- Qingsong Deng
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion; Tianjin Key Laboratory of Drug Targeting and Bioimaging, School of Chemistry & Chemical Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Aimin Yu
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion; Tianjin Key Laboratory of Drug Targeting and Bioimaging, School of Chemistry & Chemical Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Jie Zhou
- Large Instruments Sharing Service Centre, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
| | - Qin Cao
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion; Tianjin Key Laboratory of Drug Targeting and Bioimaging, School of Chemistry & Chemical Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Xiangtai Meng
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion; Tianjin Key Laboratory of Drug Targeting and Bioimaging, School of Chemistry & Chemical Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
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8
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Zhao LM, Liu K, Li DF. One-Pot Synthesis of Aza-Morita-Baylis-Hillman Adducts via Zinc-Mediated Allylation of 4-Bromocrotonates and Imines. J Org Chem 2019; 84:15429-15436. [PMID: 31657557 DOI: 10.1021/acs.joc.9b02434] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An approach to the synthetically valuable β-substituted aza-Morita-Baylis-Hillman (MBH) type products, through zinc-mediated allylation of imines with 4-bromocrotonates followed by subsequent isomerization of the double bond, was developed. Complementary to classical MBH reaction, this reaction utilizes easily available 4-bromocrotonates as the reaction partners, providing a rapid alternative to the traditional use of α,β-unsaturated carbonyl compounds. The short reaction time, one-pot operation, broad substrate scopes, gram-scale synthesis, and synthetic application exemplified the utility and practicability of this method.
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Affiliation(s)
- Li-Ming Zhao
- School of Chemistry and Materials Science , Jiangsu Normal University , Xuzhou 221116 , Jiangsu , China.,State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , China
| | - Kun Liu
- School of Chemistry and Materials Science , Jiangsu Normal University , Xuzhou 221116 , Jiangsu , China
| | - De-Feng Li
- School of Chemistry and Materials Science , Jiangsu Normal University , Xuzhou 221116 , Jiangsu , China
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9
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Wang X, Huang D, Wang K, Liu J, Zong W, Wang J, Su Y, Hu Y. Tin powder promoted synthesis of trifluoroethylamine‐containing 3,3′‐disubstituted oxindoles. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4995] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Xiaoping Wang
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
| | - Danfeng Huang
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
| | - Ke‐Hu Wang
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
| | - Jiaxin Liu
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
| | - Wuzhong Zong
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
| | - Juanjuan Wang
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
| | - Yingpeng Su
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
| | - Yulai Hu
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
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10
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Tang Q, Fu K, Ruan P, Dong S, Su Z, Liu X, Feng X. Asymmetric Catalytic Formal 1,4‐Allylation of β,γ‐Unsaturated α‐Ketoesters: Allylboration/Oxy‐Cope Rearrangement. Angew Chem Int Ed Engl 2019; 58:11846-11851. [DOI: 10.1002/anie.201905533] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 06/07/2019] [Indexed: 12/25/2022]
Affiliation(s)
- Qiong Tang
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Kai Fu
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Peiran Ruan
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Zhishan Su
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
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11
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Tang Q, Fu K, Ruan P, Dong S, Su Z, Liu X, Feng X. Asymmetric Catalytic Formal 1,4‐Allylation of β,γ‐Unsaturated α‐Ketoesters: Allylboration/Oxy‐Cope Rearrangement. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905533] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Qiong Tang
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Kai Fu
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Peiran Ruan
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Zhishan Su
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
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12
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Priya S, Weaver JD. Prenyl Praxis: A Method for Direct Photocatalytic Defluoroprenylation. J Am Chem Soc 2018; 140:16020-16025. [PMID: 30424602 DOI: 10.1021/jacs.8b09156] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The prenyl fragment is the quintessential constituent of terpenoid natural products, a diverse family which contains numerous members with diverse biological properties. In contrast, fluorinated and multifluorinated arenes make up an important class of anthropogenic molecules which are highly relevant to material, agricultural, and pharmaceutical industries. While allylation chemistry is well developed, effective prenylation strategies have been less forthcoming. Herein, we describe the photocatalytic defluoroprenylation, a powerful method that provides access to "hybrid molecules" that possess both the functionality of a prenyl group and fluorinated arenes. This approach involves direct prenyl group transfer under very mild conditions, displays excellent functional group tolerance, and includes relatively short reaction times (<4 h), which is the fastest photocatalytic C-F functionalization developed to date. Additionally, the strategy can be extended to include allyl and geranyl (10 carbon fragment) transfers. Another prominent finding is a reagent-dependent switch in regioselectivity of the major product from para to ortho C-F functionalization.
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Affiliation(s)
- Sonal Priya
- Department of Chemistry , Oklahoma State University , Stillwater , Oklahoma 74078 , United States
| | - Jimmie D Weaver
- Department of Chemistry , Oklahoma State University , Stillwater , Oklahoma 74078 , United States
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13
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Li DF, Jin HS, Zhang JR, Jiang YX, Zhao LM. Protecting-Group-Free Synthesis of 3-Amino-3-α-prenyl-oxindoles through the Direct Prenylation of Isatin-Derived Imines. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800881] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- De-Feng Li
- School of Chemistry and Materials Science; Jiangsu Normal University; 221116 Xuzhou Jiangsu China
| | - Hai-Shan Jin
- School of Chemistry and Materials Science; Jiangsu Normal University; 221116 Xuzhou Jiangsu China
| | - Jing-Ru Zhang
- School of Chemistry and Materials Science; Jiangsu Normal University; 221116 Xuzhou Jiangsu China
| | - Yi-Xuan Jiang
- School of Chemistry and Materials Science; Jiangsu Normal University; 221116 Xuzhou Jiangsu China
| | - Li-Ming Zhao
- School of Chemistry and Materials Science; Jiangsu Normal University; 221116 Xuzhou Jiangsu China
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources; Guangxi Normal University; 541004 Guangxi China
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