1
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Zhu RR, Hou XQ, Du DM. Synthesis of Benzofuran Derivatives via a DMAP-Mediated Tandem Cyclization Reaction Involving ortho-Hydroxy α-Aminosulfones. Molecules 2024; 29:3725. [PMID: 39202804 PMCID: PMC11357171 DOI: 10.3390/molecules29163725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2024] [Revised: 08/02/2024] [Accepted: 08/04/2024] [Indexed: 09/03/2024] Open
Abstract
An efficient cascade cyclization strategy was developed to synthesize aminobenzofuran spiroindanone and spirobarbituric acid derivatives utilizing 2-bromo-1,3-indandione, 5-bromo-1,3-dimethylbarbituric acid, and ortho-hydroxy α-aminosulfones as substrates. Under the optimized reaction conditions, the corresponding products were obtained with high efficiency, exceeding 95% and 85% yields for the respective derivatives. This protocol demonstrates exceptional substrate versatility and robust scalability up to the Gram scale, establishing a stable platform for the synthesis of 3-aminobenzofuran derivative. The successful synthesis paves the way for further biological evaluations with potential implications in scientific research.
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Affiliation(s)
- Rong-Rong Zhu
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, No. 5 Zhongguancun South Street, Beijing 100081, China; (R.-R.Z.)
- Key Laboratory of Medicinal Molecule Science and Pharmaceutical Technology, Ministry of Industry and Information Technology, No. 5 Zhongguancun South Street, Beijing 100081, China
| | - Xi-Qiang Hou
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, No. 5 Zhongguancun South Street, Beijing 100081, China; (R.-R.Z.)
- Key Laboratory of Medicinal Molecule Science and Pharmaceutical Technology, Ministry of Industry and Information Technology, No. 5 Zhongguancun South Street, Beijing 100081, China
| | - Da-Ming Du
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, No. 5 Zhongguancun South Street, Beijing 100081, China; (R.-R.Z.)
- Key Laboratory of Medicinal Molecule Science and Pharmaceutical Technology, Ministry of Industry and Information Technology, No. 5 Zhongguancun South Street, Beijing 100081, China
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2
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Biswas S, Balha M, Das S, Pan SC. Organocatalytic Asymmetric Reaction between α‐Cyano Enones and Dioxindoles: Synthesis of Dihydrofuran‐Spirooxindoles. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200359] [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)
- Subhankar Biswas
- Indian Institute of Technology Guwahati Chemistry IITG Road 781039 Guwahati INDIA
| | - Megha Balha
- Indian Institute of Technology Guwahati Chemistry IITG Road 781039 Guwahati INDIA
| | - Suman Das
- Indian Institute of Technology Guwahati Chemistry IITG Road 781039 Guwahati INDIA
| | - Subhas Chandra Pan
- Indian Institute of Technology Guwahati Chemistry Department of Chemistry, Indian Institute of Technology Guwahati 781039 Guwahati INDIA
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3
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Affiliation(s)
- Zhi‐Chao Chen
- Key Laboratory of Drug‐Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China
| | - Wei Du
- Key Laboratory of Drug‐Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China
| | - Ying‐Chun Chen
- Key Laboratory of Drug‐Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China
- College of Pharmacy, Third Military Medical University Shapingba, Chongqing 400038 China
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4
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Nair SR, Baire B. Recent Dearomatization Strategies of Benzofurans and Benzothiophenes. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100025] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Sindoori R. Nair
- Department of Chemistry Indian Institute of Technology Madras Chennai 600036 India
| | - Beeraiah Baire
- Department of Chemistry Indian Institute of Technology Madras Chennai 600036 India
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5
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Xu MH, Yuan YH, Liang DD, Zhang XM, Zhang FM, Tu YQ, Ma AJ, Zhang K, Peng JB. Remote asymmetric conjugate addition catalyzed by a bifunctional spiro-pyrrolidine-derived thiourea catalyst. Org Chem Front 2021. [DOI: 10.1039/d1qo00238d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A novel spiro-pyrrolidine (SPD)-derived bifunctional thiourea catalyst has been developed and used in a stereoselective conjugate addition of furfurals to β,γ-unsaturated α-ketoesters.
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Affiliation(s)
- Ming-Hui Xu
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yong-Hai Yuan
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Dong-Dong Liang
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Fu-Min Zhang
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yong-Qiang Tu
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
- School of Chemistry & Chemical Engineering
| | - Ai-Jun Ma
- School of Biotechnology and Health Science
- Wuyi University
- Jiangmen 529020
- P. R. China
| | - Kun Zhang
- School of Biotechnology and Health Science
- Wuyi University
- Jiangmen 529020
- P. R. China
| | - Jin-Bao Peng
- School of Biotechnology and Health Science
- Wuyi University
- Jiangmen 529020
- P. R. China
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6
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Chen L, Zou YX, Zheng SL, Liu XY, Yang HL, Zhang J, Zeng Y, Duan L, Wen Z, Ni HL. Dearomative 1,6-addition of P(O)–H to in situ formed p-QM-like ion pairs from 2-benzofuryl-ols to C3-phosphinoyl hydrobenzofurans. Org Chem Front 2021. [DOI: 10.1039/d1qo00076d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We report a dearomative C3-phosphorylation and a tandem C3-phosphorylation/aromatization of 2-benzofuryl-ols with P(O)–H species to afford C3-phosphinoyl hydrobenzofurans and benzofurans, respectively.
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7
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He C, Zhou Y, Li Z, Xu J, Chen X. N-Heterocyclic carbene catalyzed asymmetric [3 + 3] cycloaddtion of β,β-disubstituted, α,β-unsaturated carboxylic esters with 3-aminobenzofurans. Org Chem Front 2021. [DOI: 10.1039/d0qo01489c] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
An NHC-catalyzed β-carbon functionalization reaction to afford enantioenriched benzofuran fused δ-lactams bearing an all-carbon quaternary stereocenter is documented.
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Affiliation(s)
- Chonglong He
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Yipeng Zhou
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Zhanhuan Li
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Jianfeng Xu
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Xingkuan Chen
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
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8
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Pawar TJ, Mitkari SB, Peña‐Cabrera E, Villegas Gómez C, Cruz Cruz D. Polyenals and Polyenones in Aminocatalysis: A Decade Building Complex Frameworks from Simple Blocks. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000570] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Tushar Janardan Pawar
- Departamento de Química División de Ciencias Naturales y Exactas Universidad de Guanajuato Noria Alta S/N 36050 Guanajuato Gto México
| | - Suhas Balasaheb Mitkari
- Departamento de Química División de Ciencias Naturales y Exactas Universidad de Guanajuato Noria Alta S/N 36050 Guanajuato Gto México
| | - Eduardo Peña‐Cabrera
- Departamento de Química División de Ciencias Naturales y Exactas Universidad de Guanajuato Noria Alta S/N 36050 Guanajuato Gto México
| | - Clarisa Villegas Gómez
- Departamento de Química División de Ciencias Naturales y Exactas Universidad de Guanajuato Noria Alta S/N 36050 Guanajuato Gto México
| | - David Cruz Cruz
- Departamento de Química División de Ciencias Naturales y Exactas Universidad de Guanajuato Noria Alta S/N 36050 Guanajuato Gto México
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9
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Kalaitzakis D, Sofiadis M, Tsopanakis V, Montagnon T, Vassilikogiannakis G. Merging singlet-oxygen induced furan oxidations with organocatalysis: synthesis of enantiopure cyclopentanones and hydrindanes. Org Biomol Chem 2020; 18:2817-2822. [DOI: 10.1039/d0ob00468e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A general, flexible and highly effective method for the regio-, diastereo- & enantioselective one-pot synthesis of important carbocycles, namely, enantiopure cyclopentanones and their hydrindane congeners is presented.
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10
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Liu H, Yan Y, Zhang J, Liu M, Cheng S, Wang Z, Zhang X. Enantioselective dearomative [3+2] annulation of 5-amino-isoxazoles with quinone monoimines. Chem Commun (Camb) 2020; 56:13591-13594. [DOI: 10.1039/d0cc05807f] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Enantioselective dearomative [3+2] annulation of 5-amino-isoxazoles with quinone monoimines provided various (bridged) isoxazolines fused dihydrobenzofurans with moderate to good yields in moderate to good enantioselectivities.
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Affiliation(s)
- Hui Liu
- Department of Chemistry
- Xihua University
- China
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province
- Chengdu Institute of Organic Chemistry
| | - Yingkun Yan
- Department of Chemistry
- Xihua University
- China
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province
- Chengdu Institute of Organic Chemistry
| | - Jiayan Zhang
- Department of Chemistry
- Xihua University
- China
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province
- Chengdu Institute of Organic Chemistry
| | - Min Liu
- Department of Chemistry
- Xihua University
- China
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province
- Chengdu Institute of Organic Chemistry
| | - Shaobing Cheng
- Department of Chemistry
- Xihua University
- China
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province
- Chengdu Institute of Organic Chemistry
| | - Zhouyu Wang
- Department of Chemistry
- Xihua University
- China
| | - Xiaomei Zhang
- Department of Chemistry
- Xihua University
- China
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province
- Chengdu Institute of Organic Chemistry
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11
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Liu X, Zhang J, Bai L, Wang L, Yang D, Wang R. Catalytic asymmetric multiple dearomatizations of phenols enabled by a cascade 1,8-addition and Diels-Alder reaction. Chem Sci 2019; 11:671-676. [PMID: 34123039 PMCID: PMC8146773 DOI: 10.1039/c9sc05320d] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
A direct catalytic asymmetric multiple dearomatization reaction of phenols was disclosed, which provides expedient access to a series of architecturally complex polycyclic compounds bearing four stereogenic centers in high enantiopurity. The key to achieve such a transformation is the combination of a dearomative 1,8-addition of β-naphthols to para-quinone methides generated in situ from propargylic alcohols and a subsequent intramolecular dearomative Diels–Alder reaction. Noteworthily, this protocol enrichs not only the diversity of dearomatized products but also the toolbox of dearomatization strategies. The first chiral phosphoric acid catalyzed asymmetric multiple dearomatizations of phenols for the synthesis of bridged polycyclic compounds are reported.![]()
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Affiliation(s)
- Xihong Liu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Drug Design & Synthesis, School of Basic Medical Sciences, Lanzhou University Lanzhou 730000 China
| | - Jingying Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Drug Design & Synthesis, School of Basic Medical Sciences, Lanzhou University Lanzhou 730000 China
| | - Lutao Bai
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Drug Design & Synthesis, School of Basic Medical Sciences, Lanzhou University Lanzhou 730000 China
| | - Linqing Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Drug Design & Synthesis, School of Basic Medical Sciences, Lanzhou University Lanzhou 730000 China
| | - Dongxu Yang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Drug Design & Synthesis, School of Basic Medical Sciences, Lanzhou University Lanzhou 730000 China
| | - Rui Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Drug Design & Synthesis, School of Basic Medical Sciences, Lanzhou University Lanzhou 730000 China
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12
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Gao XY, Yan RJ, Xiao BX, Du W, Albrecht Ł, Chen YC. Asymmetric Formal Vinylogous Iminium Ion Activation for Vinyl-Substituted Heteroaryl and Aryl Aldehydes. Org Lett 2019; 21:9628-9632. [PMID: 31762285 DOI: 10.1021/acs.orglett.9b03794] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xin-Yue Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Ru-Jie Yan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Ben-Xian Xiao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Wei Du
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Łukasz Albrecht
- Institute of Organic Chemistry, Department of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland
| | - Ying-Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
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13
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Xu C, Li H, He X, Du W, Chen Y. Asymmetric Direct Remote Michael Addition Reactions of Allyl Furfurals via Dearomative Trienamine and Tetraenamine Catalysis. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900197] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Chang‐Jiang Xu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology West China School of PharmacySichuan University Chengdu 610041 China
| | - Hong‐Wei Li
- College of PharmacyThird Military Medical University Chongqing 400038 China
| | - Xiao‐Long He
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology West China School of PharmacySichuan University Chengdu 610041 China
| | - Wei Du
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology West China School of PharmacySichuan University Chengdu 610041 China
| | - Ying‐Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology West China School of PharmacySichuan University Chengdu 610041 China
- College of PharmacyThird Military Medical University Chongqing 400038 China
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14
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Inoshita T, Goshi K, Morinaga Y, Umeda Y, Ishikawa H. Enantioselective Construction of Octahydroquinolines via Trienamine-Mediated Diels-Alder Reactions. Org Lett 2019; 21:2903-2907. [PMID: 30950281 DOI: 10.1021/acs.orglett.9b00932] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A trienamine-mediated asymmetric Diels-Alder reaction using a 5-nitro-2,3-dihydro-4-pyridone derivative as a dienophile in the presence of a secondary amine organocatalyst derived from cis-hydroxyproline was discovered. The reaction provides optically active octahydroquinolines through an endo-selective [4 + 2] cyclization pathway. The following stereoselective denitration, isomerization, and/or hydrogenation generated divergent stereoisomers of decahydroquinolines, which are useful synthons for the total synthesis of Lycopodium alkaloids.
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Affiliation(s)
- Taichi Inoshita
- Department of Chemistry, Graduate School of Science and Technology , Kumamoto University , 2-39-1, Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
| | - Kei Goshi
- Department of Chemistry, Graduate School of Science and Technology , Kumamoto University , 2-39-1, Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
| | - Yuka Morinaga
- Department of Chemistry, Graduate School of Science and Technology , Kumamoto University , 2-39-1, Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
| | - Yuhei Umeda
- Department of Chemistry, Graduate School of Science and Technology , Kumamoto University , 2-39-1, Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
| | - Hayato Ishikawa
- Department of Chemistry, Graduate School of Science and Technology , Kumamoto University , 2-39-1, Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan.,Faculty of Advanced Science and Technology , Kumamoto University , 2-39-1, Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
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15
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Balha M, Soni C, Pan SC. Organocatalytic Asymmetric Synthesis of Bridged O
,O
-Ketals with Spirooxindole Motif. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900120] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Megha Balha
- Department of Chemistry; Indian Institute of Technology Guwahati; 781039 Assam India
| | - Chintan Soni
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 India
| | - Subhas Chandra Pan
- Department of Chemistry; Indian Institute of Technology Guwahati; 781039 Assam India
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16
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Balha M, Mondal B, Pan SC. Organocatalytic asymmetric synthesis of dihydrofuran-spirooxindoles from benzylidene malononitriles and dioxindoles. Org Biomol Chem 2019; 17:6557-6561. [DOI: 10.1039/c9ob01199d] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first organocatalytic asymmetric synthesis of dihydrofuran-spirooxindoles having a linkage at the 2-position of the dihydrofuran motif has been developed from dioxindoles and benzylidene malononitriles.
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Affiliation(s)
- Megha Balha
- Department of Chemistry
- Indian Institute of Technology
- Guwahati
- India
| | - Buddhadeb Mondal
- Department of Chemistry
- Indian Institute of Technology
- Guwahati
- India
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17
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Xiao BX, Jiang B, Song X, Du W, Chen YC. Phosphine-catalysed asymmetric dearomative formal [4+2] cycloadditions of 3-benzofuranyl vinyl ketones. Chem Commun (Camb) 2019; 55:3097-3100. [PMID: 30789167 DOI: 10.1039/c9cc00386j] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
An asymmetric dearomative formal [4+2] cycloaddition reaction of 3-benzofuranyl vinyl ketones and 3-olefinic (7-aza)oxindoles is explored which is catalysed by chiral phosphines.
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Affiliation(s)
- Ben-Xian Xiao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- China
| | - Bo Jiang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- China
| | - Xue Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- China
| | - Wei Du
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- China
| | - Ying-Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- China
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18
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Zhang H, Li S, Kang Q, Du Y. Chiral-at-metal rhodium(iii) complex catalyzed enantioselective synthesis of C2-substituted benzofuran derivatives. Org Chem Front 2019. [DOI: 10.1039/c9qo01022j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An enantioselective C2-nucleophilic functionalization of 3-aminobenzofurans has been realized under catalysis of chiral rhodium(iii) complexes, affording a large array of C2-substituted benzofuran derivatives in high yields and enantioselectivities.
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Affiliation(s)
- Haoran Zhang
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Center for Excellence in Molecular Synthesis
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
| | - Shiwu Li
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Center for Excellence in Molecular Synthesis
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
| | - Qiang Kang
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Center for Excellence in Molecular Synthesis
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
| | - Yu Du
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Center for Excellence in Molecular Synthesis
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
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19
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Balha M, Pan SC. Organocatalytic Asymmetric Synthesis of Bridged Acetals with Spirooxindole Skeleton. J Org Chem 2018; 83:14703-14712. [PMID: 30372074 DOI: 10.1021/acs.joc.8b02156] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The first highly diastereo- and enantioselective synthesis of bridged O, O-acetals embedded with spirooxindoles has been developed. Dioxindoles and 2-hydroxy cinnamaldehydes were employed as the reaction partners in this method. The desired products were obtained via diaryl prolinol TBS ether catalyzed Michael reaction followed by acetal formation with TFA.
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Affiliation(s)
- Megha Balha
- Department of Chemistry , Indian Institute of Technology Guwahati , North Guwahati , Assam 781039 , India
| | - Subhas Chandra Pan
- Department of Chemistry , Indian Institute of Technology Guwahati , North Guwahati , Assam 781039 , India
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20
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Xiao BX, Gao XY, Du W, Chen YC. Asymmetric Reactions involving Lewis Base Catalyst Tethered Dearomatized Intermediates. Chemistry 2018; 25:1607-1613. [PMID: 30109896 DOI: 10.1002/chem.201803592] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Indexed: 01/01/2023]
Affiliation(s)
- Ben-Xian Xiao
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Xin-Yue Gao
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Wei Du
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Ying-Chun Chen
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
- College of Pharmacy; Third Military Medical University; Chongqing 400038 China
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21
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Przydacz A, Skrzyńska A, Albrecht Ł. Unterbrechung der Aromatizität mittels Aminokatalyse: Eine einfache Strategie für die asymmetrische Synthese. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808197] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Artur Przydacz
- Institute of Organic Chemistry; Faculty of Chemistry; Lodz University of Technology; Żeromskiego 116 90-924 Łódź Polen
| | - Anna Skrzyńska
- Institute of Organic Chemistry; Faculty of Chemistry; Lodz University of Technology; Żeromskiego 116 90-924 Łódź Polen
| | - Łukasz Albrecht
- Institute of Organic Chemistry; Faculty of Chemistry; Lodz University of Technology; Żeromskiego 116 90-924 Łódź Polen
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22
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Przydacz A, Skrzyńska A, Albrecht Ł. Breaking Aromaticity with Aminocatalysis: A Convenient Strategy for Asymmetric Synthesis. Angew Chem Int Ed Engl 2018; 58:63-73. [DOI: 10.1002/anie.201808197] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 08/12/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Artur Przydacz
- Institute of Organic Chemistry; Faculty of Chemistry; Lodz University of Technology; Żeromskiego 116 90-924 Łódź Poland
| | - Anna Skrzyńska
- Institute of Organic Chemistry; Faculty of Chemistry; Lodz University of Technology; Żeromskiego 116 90-924 Łódź Poland
| | - Łukasz Albrecht
- Institute of Organic Chemistry; Faculty of Chemistry; Lodz University of Technology; Żeromskiego 116 90-924 Łódź Poland
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23
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Xu‐Xu Q, Liu Q, Zhang X, You S. Copper‐Catalyzed Ring Opening of Benzofurans and an Enantioselective Hydroamination Cascade. Angew Chem Int Ed Engl 2018; 57:15204-15208. [DOI: 10.1002/anie.201809003] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Revised: 09/06/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Qing‐Feng Xu‐Xu
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Qiang‐Qiang Liu
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Xiao Zhang
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shu‐Li You
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
- Collaborative Innovation Center of, Chemical Science and Engineering Tianjin 300072 China
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24
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Xu‐Xu Q, Liu Q, Zhang X, You S. Copper‐Catalyzed Ring Opening of Benzofurans and an Enantioselective Hydroamination Cascade. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201809003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Qing‐Feng Xu‐Xu
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Qiang‐Qiang Liu
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Xiao Zhang
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shu‐Li You
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
- Collaborative Innovation Center of, Chemical Science and Engineering Tianjin 300072 China
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25
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Ding X, Su R, Yang W, Deng W. Organocatalytic Asymmetric Formal Aza‐[3+3]Cyclo‐additions of 3‐Aminobenzofuran with
α,β
‐Unsaturated Aldehydes. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800921] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Xiang‐Feng Ding
- Shanghai Key Laboratory of New Drug Design and School of PharmacyEast China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Ruo‐Heng Su
- Shanghai Key Laboratory of New Drug Design and School of PharmacyEast China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Wu‐Lin Yang
- Shanghai Key Laboratory of New Drug Design and School of PharmacyEast China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Wei‐Ping Deng
- Shanghai Key Laboratory of New Drug Design and School of PharmacyEast China University of Science and Technology 130 Meilong Road Shanghai 200237 China
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26
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Liang XW, Chen X, Zhang Z, You SL. Catalytic asymmetric brominative dearomatization reaction of benzofurans. CHINESE CHEM LETT 2018. [DOI: 10.1016/j.cclet.2018.01.039] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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27
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Pawar TJ, Jiang H, Vázquez MA, Villegas Gómez C, Cruz Cruz D. Aminocatalytic Privileged Diversity-Oriented Synthesis (ApDOS): An Efficient Strategy to Populate Relevant Chemical Spaces. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800273] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Tushar J. Pawar
- Departamento de Química; División de Ciencias Naturales y Exactas; Universidad de Guanajuato; Noria Alta S/N 36050 Guanajuato Gto. México
| | - Hao Jiang
- Departamento de Química; División de Ciencias Naturales y Exactas; Universidad de Guanajuato; Noria Alta S/N 36050 Guanajuato Gto. México
| | - Miguel A. Vázquez
- Departamento de Química; División de Ciencias Naturales y Exactas; Universidad de Guanajuato; Noria Alta S/N 36050 Guanajuato Gto. México
| | - Clarisa Villegas Gómez
- Departamento de Química; División de Ciencias Naturales y Exactas; Universidad de Guanajuato; Noria Alta S/N 36050 Guanajuato Gto. México
| | - David Cruz Cruz
- Departamento de Química; División de Ciencias Naturales y Exactas; Universidad de Guanajuato; Noria Alta S/N 36050 Guanajuato Gto. México
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28
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He XL, Zhao HR, Duan CQ, Du W, Chen YC. Remote Asymmetric Oxa-Diels–Alder Reaction of 5-Allylic Furfurals via Dearomatizative Tetraenamine Catalysis. Org Lett 2018; 20:804-807. [PMID: 29355329 DOI: 10.1021/acs.orglett.7b03942] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Xiao-Long He
- Department
of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Hui-Ru Zhao
- Department
of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | | | - Wei Du
- Department
of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Ying-Chun Chen
- Department
of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
- College
of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
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29
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Zhu Y, Guo J, Jin S, Guo J, Bai X, Wang Q, Bu Z. Construction of bridged cyclic N,O-ketal spirooxindoles through a Michael addition/N,O-ketalization sequence. Org Biomol Chem 2018; 16:1751-1759. [DOI: 10.1039/c8ob00306h] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first highly diastereoselective TfOH-catalyzed Michael addition/N,O-ketalization sequence of 3-aminooxindoles and ortho-hydroxychalcones was achieved to afford a wide range of bridged cyclic N,O-ketal spirooxindoles in 41–97% yields.
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Affiliation(s)
- Yanshuo Zhu
- Institute of Functional Organic Molecular Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Jia Guo
- Institute of Functional Organic Molecular Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Shaojing Jin
- Institute of Functional Organic Molecular Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Jiaomei Guo
- Institute of Functional Organic Molecular Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Xuguan Bai
- Institute of Functional Organic Molecular Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Qilin Wang
- Institute of Functional Organic Molecular Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Zhanwei Bu
- Institute of Functional Organic Molecular Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
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30
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Beppu S, Arae S, Furusawa M, Arita K, Fujimoto H, Sumimoto M, Imahori T, Igawa K, Tomooka K, Irie R. Stereoselective Intramolecular Dearomatizative [4+2] Cycloaddition of Linked Ethynylnaphthol-Benzofuran Systems. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701481] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Shota Beppu
- Department of Chemistry; Faculty of Advanced Science and Technology; Kumamoto University; 2-39-1 Kurokami, Chuo-ku 860-8555 Kumamoto Japan
| | - Sachie Arae
- Department of Chemistry; Faculty of Advanced Science and Technology; Kumamoto University; 2-39-1 Kurokami, Chuo-ku 860-8555 Kumamoto Japan
| | - Masaki Furusawa
- Department of Chemistry; Faculty of Advanced Science and Technology; Kumamoto University; 2-39-1 Kurokami, Chuo-ku 860-8555 Kumamoto Japan
| | - Kosuke Arita
- Department of Chemistry; Faculty of Advanced Science and Technology; Kumamoto University; 2-39-1 Kurokami, Chuo-ku 860-8555 Kumamoto Japan
| | - Hitoshi Fujimoto
- Department of Chemistry; Faculty of Advanced Science and Technology; Kumamoto University; 2-39-1 Kurokami, Chuo-ku 860-8555 Kumamoto Japan
| | - Michinori Sumimoto
- Graduate School of Science and Technology for Innovation; Yamaguchi University; 2-16-1 Tokiwadai 755-8611 Ube Yamaguchi Japan
| | - Tatsushi Imahori
- Department of Industrial Chemistry; Faculty of Engineering; Tokyo University of Science; 1-3 Kagurazaka 162-8601 Shinjyuku-ku Tokyo Japan
| | - Kazunobu Igawa
- Institute for Materials Chemistry and Engineering; Kyushu University; 6-1 Kasuga-koen 816-8580 Kasuga Fukuoka Japan
| | - Katsuhiko Tomooka
- Institute for Materials Chemistry and Engineering; Kyushu University; 6-1 Kasuga-koen 816-8580 Kasuga Fukuoka Japan
| | - Ryo Irie
- Department of Chemistry; Faculty of Advanced Science and Technology; Kumamoto University; 2-39-1 Kurokami, Chuo-ku 860-8555 Kumamoto Japan
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31
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He Q, Du W, Chen YC. Asymmetric [3+2] Annulations to Construct 1,2-Bispirooxindoles Incorporating a Dihydropyrrolidine Motif. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700849] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Qing He
- Department of Medicinal Chemistry, West China School of Pharmacy; Sichuan University; Chengdu 610041 People's Republic of China
| | - Wei Du
- Department of Medicinal Chemistry, West China School of Pharmacy; Sichuan University; Chengdu 610041 People's Republic of China
| | - Ying-Chun Chen
- Department of Medicinal Chemistry, West China School of Pharmacy; Sichuan University; Chengdu 610041 People's Republic of China
- College of Pharmacy; Third Military Medical University; Chongqing 400038 People's Republic of China
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32
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Su YL, Han ZY, Li YH, Gong LZ. Asymmetric Allylation of Furfural Derivatives: Synergistic Effect of Chiral Ligand and Organocatalyst on Stereochemical Control. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02667] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Yong-Liang Su
- Hefei National Laboratory for
Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
- Collaborative
Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
| | - Zhi-Yong Han
- Hefei National Laboratory for
Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
- Collaborative
Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
| | - Yu-Hui Li
- Hefei National Laboratory for
Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Liu-Zhu Gong
- Hefei National Laboratory for
Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
- Collaborative
Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
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33
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Liu C, Liu YK. Asymmetric Organocatalytic One-Pot, Two-Step Sequential Process to Synthesize Chiral Acetal-Containing Polycyclic Derivatives from Cyclic Hemiacetals and Enones. J Org Chem 2017; 82:10450-10460. [PMID: 28914542 DOI: 10.1021/acs.joc.7b01915] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We have developed an efficient one-pot, two-step sequential process to synthesize biologically and synthetically important chiral acetal-containing polycyclic derivatives. This novel protocol had been proved to proceed via Michael-lactolization-oxocarbenium ion ring-closing sequence, which was initiated by a key reactive enamine intermediate and interrupted the previously established reaction pathway of two different enones used in this work, and generated the corresponding cycloadducts with excellent stereoselectivity bearing up to seven continuous stereocenters. Both chiral and racemic starting cyclic hemiacetals worked well in this strategy. The synthetic applications of the obtained polycyclic products have also been demonstrated.
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Affiliation(s)
- Chao Liu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, China
| | - Yan-Kai Liu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, China.,Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology , Qingdao 266003, China
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34
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35
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Xiao BX, Yan RJ, Gao XY, Du W, Chen YC. Asymmetric Benzylic Functionalizations of 3-Vinyl Benzofurans via Cascade Formal Trienamine–Vinylogous Iminium Ion Activation. Org Lett 2017; 19:4652-4655. [PMID: 28825488 DOI: 10.1021/acs.orglett.7b02287] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ben-Xian Xiao
- Department
of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Ru-Jie Yan
- Department
of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Xin-Yue Gao
- Department
of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Wei Du
- Department
of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Ying-Chun Chen
- Department
of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
- College
of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
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36
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Zhu Y, Zhou J, Jin S, Dong H, Guo J, Bai X, Wang Q, Bu Z. Metal-free diastereoselective construction of bridged ketal spirooxindoles via a Michael addition-inspired sequence. Chem Commun (Camb) 2017; 53:11201-11204. [DOI: 10.1039/c7cc05813f] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A TfOH-catalyzed highly diastereoselective Michael addition/ketalization sequence of 3-hydroxyoxindoles and ortho-hydroxychalcones was developed, leading to biologically important bridged ketal spirooxindoles in moderate to excellent yields.
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Affiliation(s)
- Yanshuo Zhu
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Jing Zhou
- School of Pharmaceutical Science
- Chongqing Research Center for Pharmaceutical Engineering
- Chongqing Medical University University
- Chongqing 400016
- China
| | - Shaojing Jin
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Huahui Dong
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Jiaomei Guo
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Xuguan Bai
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Qilin Wang
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Zhanwei Bu
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
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