1
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Pompeo MM, Kelly SM, St-Jean F, Bass TM, Dalton DM, Zell D, Han C, Sirois LE, Gosselin F. Umpolung Flow Chemistry for the Synthesis of a 3-Oxo-3 H-spiro[benzofuran-2,4'-piperidine] Building Block. J Org Chem 2024. [PMID: 38767619 DOI: 10.1021/acs.joc.4c00337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
An efficient and scalable route to tert-butyl 3-oxo-3H-spiro[benzofuran-2,4'-piperidine]-1'-carboxylate, a central prochiral intermediate in the synthesis of SHP2 inhibitor GDC-1971 (migoprotafib), was achieved. Preparation of the title compound from readily available 2-fluorobenzaldehyde included formation of a modified Katritzky benzotriazole hemiaminal, which, upon deprotonation by n-butyllithium, participated in umpolung reactivity via 1,2-addition to tert-butyl 4-oxopiperidine-1-carboxylate (N-Boc-4-piperidone). Most notably, this reaction was developed as a robust plug-flow process that could be executed on multiple kilograms without the need for pilot-scale reaction vessels operating at low cryogenic temperatures. Treatment of the resulting tetrahedral intermediate with oxalic acid resulted in collapse to the corresponding 4-(2-fluorobenzoyl)-4-hydroxypiperidine, which was isolated as a solid via crystallization. The synthesis concluded with an optimized intramolecular SNAr reaction and final crystallization to generate tert-butyl 3-oxo-3H-spiro[benzofuran-2,4'-piperidine]-1'-carboxylate as a stable, high-quality intermediate suitable for further functionalization toward GDC-1971.
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Affiliation(s)
- Matthew M Pompeo
- Department of Synthetic Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Sean M Kelly
- Department of Synthetic Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Frédéric St-Jean
- Department of Synthetic Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Thomas M Bass
- Department of Synthetic Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Derek M Dalton
- Department of Synthetic Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Daniel Zell
- Department of Synthetic Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Chong Han
- Department of Synthetic Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Lauren E Sirois
- Department of Synthetic Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Department of Synthetic Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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2
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Sulik M, Fontinha D, Steverding D, Sobczak S, Antoszczak M, Prudêncio M, Huczyński A. Unexpected rearrangement of ivermectin in the synthesis of new derivatives with trypanocidal and antiplasmodial activities. Eur J Med Chem 2024; 263:115951. [PMID: 37988797 DOI: 10.1016/j.ejmech.2023.115951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 11/08/2023] [Accepted: 11/09/2023] [Indexed: 11/23/2023]
Abstract
Ivermectin is a sixteen-membered macrolactone "wonder drug" of Nobel prize-honored distinction that exhibits a wide range of antiparasitic activities. It has been used for almost four decades in the treatment of various parasitic diseases in humans and animals. In this paper, we describe the synthesis of the first-in-class ivermectin derivatives obtained via derivatization of the C13 position, along with the unexpected rearrangement of the oxahydrindene (hexahydrobenzofuran) unit of the macrolide ring. The structural investigation of the rearrangement has been performed using the single-crystal X-ray diffraction method. The antiparasitic and cytotoxic activities of the newly synthesized derivatives were determined in vitro with the bloodstream form of Trypanosoma brucei brucei, the hepatic stage of Plasmodium berghei, and human leukemia HL-60 cells. The compounds with the highest trypanocidal activity were the C13-epi-2-chloroacetamide analogs of native (6h) or rearranged (7h) ivermectin. Both 6h and 7h displayed trypanocidal activities within a similar mid-nanomolar concentration range as the commercially used trypanocides suramin and ethidium bromide. Furthermore, 6h and 7h exhibited a comparable cytotoxic to trypanocidal ratio as the reference drug ethidium bromide. The double-modified compound 7a (C13-epi-acetamide of rearranged ivermectin) exhibited the highest activity against P. berghei grown in human hepatoma cells, which was 2.5 times higher than that of ivermectin. The findings of this study suggest that C13-epi-amide derivatives of ivermectin are suitable leads in the rational development of new antiparasitic agents.
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Affiliation(s)
- Michał Sulik
- Department of Medical Chemistry, Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61‒614 Poznań, Poland
| | - Diana Fontinha
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisboa, Portugal
| | - Dietmar Steverding
- Bob Champion Research & Education Building, Norwich Medical School, University of East Anglia, Norwich, UK
| | - Szymon Sobczak
- Department of Materials Chemistry, Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61‒614 Poznań, Poland
| | - Michał Antoszczak
- Department of Medical Chemistry, Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61‒614 Poznań, Poland
| | - Miguel Prudêncio
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisboa, Portugal
| | - Adam Huczyński
- Department of Medical Chemistry, Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61‒614 Poznań, Poland.
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3
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Qin H, Wei G, Lou Y, Zheng X, Bao M, Zhang Y, Huang P. K 2S 2O 8-mediated direct C-H heteroarylation/hydroxylation of indolin-2-ones with quinoxalin-2(1 H)-ones. Org Biomol Chem 2024; 22:279-283. [PMID: 38053489 DOI: 10.1039/d3ob01792c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Herein, a K2S2O8-mediated direct heteroarylation and hydroxylation reaction between quinoxalin-2(1H)-ones with a C(sp2)-H bond and indolin-2-ones with a C(sp3)-H bond via an oxidative cross-coupling reaction has been reported. We have successfully established a feasible and concise reaction system that represents the first example of free-radical-promoted heteroarylation and hydroxylation reaction on the C-3 position of oxindole. A series of 3-substituted 3-hydroxyoxindoles are obtained in 0-83% yield using this methodology.
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Affiliation(s)
- Hui Qin
- Center for Clinical Pharmacy, Cancer Center, Department of Pharmacy, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China.
- Key Laboratory of Endocrine Gland Diseases of Zhejiang Province, Hangzhou, 310014, China
| | - Guoliang Wei
- Center for Clinical Pharmacy, Cancer Center, Department of Pharmacy, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China.
| | - Yutao Lou
- College of pharmacy, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Xiaowei Zheng
- Center for Clinical Pharmacy, Cancer Center, Department of Pharmacy, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China.
- Key Laboratory of Endocrine Gland Diseases of Zhejiang Province, Hangzhou, 310014, China
| | - Meihua Bao
- Academician Workstation, School of Stomatology, Changsha Medical University, Changsha, China
| | - Yiwen Zhang
- Center for Clinical Pharmacy, Cancer Center, Department of Pharmacy, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China.
- Key Laboratory of Endocrine Gland Diseases of Zhejiang Province, Hangzhou, 310014, China
| | - Ping Huang
- Center for Clinical Pharmacy, Cancer Center, Department of Pharmacy, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China.
- Key Laboratory of Endocrine Gland Diseases of Zhejiang Province, Hangzhou, 310014, China
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4
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Natsutani I, Iwata R, Yamai Y, Ishida K, Nagaoka Y, Sumiyoshi T. Design, synthesis and evaluations of spiro‐fused benzoxaborin derivatives as novel boron‐containing compounds. Chem Biol Drug Des 2019; 93:657-665. [DOI: 10.1111/cbdd.13496] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 01/15/2019] [Accepted: 01/19/2019] [Indexed: 02/06/2023]
Affiliation(s)
- Itaru Natsutani
- Department of Life Science and BiotechnologyFaculty of Chemistry, Materials and BioengineeringKansai University Suita Osaka Japan
| | - Riyo Iwata
- Department of Life Science and BiotechnologyFaculty of Chemistry, Materials and BioengineeringKansai University Suita Osaka Japan
| | - Yu‐suke Yamai
- Department of Life Science and BiotechnologyFaculty of Chemistry, Materials and BioengineeringKansai University Suita Osaka Japan
| | - Kyoji Ishida
- Department of Life Science and BiotechnologyFaculty of Chemistry, Materials and BioengineeringKansai University Suita Osaka Japan
| | - Yasuo Nagaoka
- Department of Life Science and BiotechnologyFaculty of Chemistry, Materials and BioengineeringKansai University Suita Osaka Japan
| | - Takaaki Sumiyoshi
- Department of Life Science and BiotechnologyFaculty of Chemistry, Materials and BioengineeringKansai University Suita Osaka Japan
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5
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Huang H, Hu B, Lai Y, Zou Z, Lin H, Xiao Y, You Q, Shen J. Base-Promoted Oxidative Dearomatization of Pyrroles to 4-Pyrrolin-2-ones. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800845] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Huabin Huang
- Department of Science and Technology for Inspection; Xiamen Huaxia University; Xiamen 361024 China
| | - Bing Hu
- Department of Science and Technology for Inspection; Xiamen Huaxia University; Xiamen 361024 China
| | - Yuanfa Lai
- Department of Science and Technology for Inspection; Xiamen Huaxia University; Xiamen 361024 China
| | - Zhongai Zou
- Department of Science and Technology for Inspection; Xiamen Huaxia University; Xiamen 361024 China
| | - Huixia Lin
- Department of Science and Technology for Inspection; Xiamen Huaxia University; Xiamen 361024 China
| | - Yujuan Xiao
- Department of Science and Technology for Inspection; Xiamen Huaxia University; Xiamen 361024 China
| | - Qihua You
- Department of Science and Technology for Inspection; Xiamen Huaxia University; Xiamen 361024 China
| | - Jinhai Shen
- Department of Science and Technology for Inspection; Xiamen Huaxia University; Xiamen 361024 China
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6
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Triantafyllakis M, Sfakianaki K, Kalaitzakis D, Vassilikogiannakis G. The Power of Triplet and Singlet Oxygen in Synthesis: 2-Oxindoles, 3-Hydroxy-2-oxindoles, and Isatins from Furans. Org Lett 2018; 20:3631-3634. [DOI: 10.1021/acs.orglett.8b01404] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Myron Triantafyllakis
- Department of Chemistry, University of Crete, VasilikaVouton, 71003, Iraklion, Crete, Greece
| | - Kalliopi Sfakianaki
- Department of Chemistry, University of Crete, VasilikaVouton, 71003, Iraklion, Crete, Greece
| | - Dimitris Kalaitzakis
- Department of Chemistry, University of Crete, VasilikaVouton, 71003, Iraklion, Crete, Greece
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7
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Wu Z, Fang X, Leng Y, Yao H, Lin A. Indium-mediated Palladium-catalyzed Allylic Alkylation of Isatins with Alkynes. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701139] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Zijun Wu
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry; School of Pharmacy, China Pharmaceutical University; Nanjing 210009 People's Republic of China
| | - Xinxin Fang
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry; School of Pharmacy, China Pharmaceutical University; Nanjing 210009 People's Republic of China
| | - Yuning Leng
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry; School of Pharmacy, China Pharmaceutical University; Nanjing 210009 People's Republic of China
| | - Hequan Yao
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry; School of Pharmacy, China Pharmaceutical University; Nanjing 210009 People's Republic of China
| | - Aijun Lin
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry; School of Pharmacy, China Pharmaceutical University; Nanjing 210009 People's Republic of China
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8
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Zhu WM, Bao WH, Ying WW, Chen WT, Huang YL, Ge GP, Chen GP, Wei WT. TEMPO-Promoted C(sp3
)−H Hydroxylation of 2-Oxindoles at Room Temperature. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201700660] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wen-Ming Zhu
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Wen-Hui Bao
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Wei-Wei Ying
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Wei-Ting Chen
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Yi-Ling Huang
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Guo-Ping Ge
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Gan-Ping Chen
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Wen-Ting Wei
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
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9
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Sheng X, Zhang J, Yang H, Jiang G. Tunable Aerobic Oxidative Hydroxylation/Dehydrogenative Homocoupling of Pyrazol-5-ones under Transition-Metal-Free Conditions. Org Lett 2017; 19:2618-2621. [DOI: 10.1021/acs.orglett.7b00951] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Xuguang Sheng
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research
Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinlong Zhang
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research
Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
| | - Huameng Yang
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research
Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
| | - Gaoxi Jiang
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research
Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
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10
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Brittain WDG, Buckley BR, Fossey JS. Kinetic resolution of alkyne-substituted quaternary oxindoles via copper catalysed azide-alkyne cycloadditions. Chem Commun (Camb) 2016; 51:17217-20. [PMID: 26311134 DOI: 10.1039/c5cc04886a] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The synthesis and kinetic resolution of quaternary oxindoles through copper catalysed azide-alkyne cycloadditions is presented. Selectivity factors (s) up to 22.1 ± 0.5 are reported. Enantioenriched alkynes and triazoles were obtained in ≥80% enantiomeric excess (e.e.).
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Affiliation(s)
- William D G Brittain
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, UK.
| | - Benjamin R Buckley
- Department of Chemistry, Loughborough University, Loughborough, Leicestershire LE11 3TU, UK.
| | - John S Fossey
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, UK.
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11
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Moon HR, Lee S, Roh HJ, Kim JN. Facile Synthesis of 3-Aryl-3-hydroxy-2-oxindoles from 2-Arylindoles. B KOREAN CHEM SOC 2016. [DOI: 10.1002/bkcs.10807] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Hye Ran Moon
- Department of Chemistry and Institute of Basic Science; Chonnam National University; Gwangju 500-757 Korea
| | - Sangku Lee
- Targeted Medicine Research Center; Korea Research Institute of Bioscience and Biotechnology; Chungbuk 363-883 Korea
| | - Hwa Jung Roh
- Department of Chemistry and Institute of Basic Science; Chonnam National University; Gwangju 500-757 Korea
| | - Jae Nyoung Kim
- Department of Chemistry and Institute of Basic Science; Chonnam National University; Gwangju 500-757 Korea
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12
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Yu J, Moon HR, Min BK, Kim JN. 2-Arylindoles: A New Entry to Transition Metal-free Synthesis of 2-Aminobenzophenones. B KOREAN CHEM SOC 2016. [DOI: 10.1002/bkcs.10796] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Jin Yu
- Department of Chemistry and Institute of Basic Science; Chonnam National University; Gwangju 500-757 Korea
| | - Hye Ran Moon
- Department of Chemistry and Institute of Basic Science; Chonnam National University; Gwangju 500-757 Korea
| | - Beom Kyu Min
- Department of Chemistry and Institute of Basic Science; Chonnam National University; Gwangju 500-757 Korea
| | - Jae Nyoung Kim
- Department of Chemistry and Institute of Basic Science; Chonnam National University; Gwangju 500-757 Korea
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13
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Zhang QB, Jia WL, Ban YL, Zheng Y, Liu Q, Wu LZ. Autoxidation/Aldol Tandem Reaction of 2-Oxindoles with Ketones: A Green Approach for the Synthesis of 3-Hydroxy-2-Oxindoles. Chemistry 2016; 22:2595-8. [PMID: 26714924 DOI: 10.1002/chem.201504282] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Indexed: 01/27/2023]
Abstract
In the presence of tetrabutylammonium fluoride and molecular sieves (MS) 4 Å in DMF, an efficient autoxidation reaction of 2-oxindoles with ketones under air at room temperature has been developed. This approach may provide a green, practical, and metal-free protocol for a wide range of biologically important 3-hydroxy-3-(2-oxo-alkyl)-2-oxindoles.
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Affiliation(s)
- Qing-Bao Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Wen-Liang Jia
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Yong-Liang Ban
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Yong Zheng
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Qiang Liu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China.
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, P. R. China
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14
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Li X, Ni W, Mao F, Wang W, Li J. A Metal-free Approach to 3-Aryl-3-hydroxy-2-oxindoles by Treatment of 3-Acyloxy-2-oxindoles with Diaryliodonium Salts. Chem Asian J 2015; 11:226-30. [DOI: 10.1002/asia.201500854] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2015] [Indexed: 11/05/2022]
Affiliation(s)
- Xiaokang Li
- Shanghai Key Laboratory of New Drug Design; School of Pharmacy; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 China
| | - Wei Ni
- Shanghai Key Laboratory of New Drug Design; School of Pharmacy; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 China
| | - Fei Mao
- Shanghai Key Laboratory of New Drug Design; School of Pharmacy; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 China
| | - Wei Wang
- Shanghai Key Laboratory of New Drug Design; School of Pharmacy; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 China
- Department of Chemistry and Chemical Biology; University of New Mexico; Albuquerque NM 87131-0001 USA
| | - Jian Li
- Shanghai Key Laboratory of New Drug Design; School of Pharmacy; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 China
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15
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Styduhar ED, Huters AD, Weires NA, Garg NK. Enantiospecific total synthesis of N-methylwelwitindolinone D isonitrile. Angew Chem Int Ed Engl 2013; 52:12422-5. [PMID: 24123612 PMCID: PMC3892424 DOI: 10.1002/anie.201307464] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2013] [Indexed: 11/11/2022]
Abstract
The total synthesis of N-methylwelwitindolinone D isonitrile (1) has been achieved in 17 steps from a readily available carvone derivative. The route features a double C-H functionalization event involving a keto oxindole substrate to introduce the tetrahydrofuran ring of the natural product.
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Affiliation(s)
- Evan D. Styduhar
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095 (USA), Fax: (+1) 310-206-1843, Homepage: http://www.chem.ucla.edu/dept/Faculty/garg/Garg_Group/Home.html
| | - Alexander D. Huters
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095 (USA), Fax: (+1) 310-206-1843, Homepage: http://www.chem.ucla.edu/dept/Faculty/garg/Garg_Group/Home.html
| | - Nicholas A. Weires
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095 (USA), Fax: (+1) 310-206-1843, Homepage: http://www.chem.ucla.edu/dept/Faculty/garg/Garg_Group/Home.html
| | - Neil K. Garg
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095 (USA), Fax: (+1) 310-206-1843, Homepage: http://www.chem.ucla.edu/dept/Faculty/garg/Garg_Group/Home.html
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16
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17
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Lee HJ, Lee S, Lim JW, Kim JN. An Expedient Synthesis of Oxindole Dimers by Direct Oxidative Dimerization of Oxindoles. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.8.2446] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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