1
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Chen F, Geng H, Li C, Wang J, Guo B, Tang L, Yang YY. Aerobic Dehydrogenative Aromatization in the Preparation of 4-Aminoquinoline Derivatives by Synergistic Pd/Cu Catalysis. J Org Chem 2023; 88:15589-15596. [PMID: 37931324 DOI: 10.1021/acs.joc.3c01400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
The 4-aminoquinoline moiety is widely present in various bioactive compounds and marketed drugs, while the preparation of this target structure relies heavily on the amination of 4-chloroquinolines. Herein, an atom and step economic procedure was developed based on an aerobic dehydrogenative aromatization strategy. Unlike the well-known palladium-catalyzed dehydrogenative aromatization of cyclohexanones with amines, synergistic Pd/Cu catalysis is crucial for 2,3-dihydroquinolin-4(1H)-one type of substrates. Under the optimized conditions, a range of aromatic/aliphatic amines and 2,3-dihydroquinolin-4(1H)-ones were coupled to give the corresponding 4-aminoquinoline products in moderate to high yields, and the application of the current methodology for the preparation and late-stage diversification of marketed drugs was also demonstrated.
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Affiliation(s)
- Fei Chen
- School of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, 550014 Guiyang, P. R. China
| | - Huidan Geng
- School of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, 550014 Guiyang, P. R. China
| | - Chun Li
- School of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, 550014 Guiyang, P. R. China
| | - Jianta Wang
- School of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, 550014 Guiyang, P. R. China
| | - Bing Guo
- Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases, Guizhou Medical University, 550004 Guiyang, P. R. China
| | - Lei Tang
- School of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, 550014 Guiyang, P. R. China
| | - Yuan-Yong Yang
- School of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, 550014 Guiyang, P. R. China
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2
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Zhang X, Yu Y, Li W, Shi L, Li H. Access to α-Hydroxy Amides via a Practical Metal-Free “One-Pot” Tandem Reaction Involving Aerobic C(sp 3)–H Hydroxylation and C(sp 2)–C(sp 3) Cleavage. J Org Chem 2022; 87:16263-16275. [DOI: 10.1021/acs.joc.2c01839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Affiliation(s)
- Xiao Zhang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yang Yu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Wenjie Li
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Lei Shi
- Döhler Food & Beverage Ingredients (Shanghai) Co., Ltd., 739 Shennan Road, Shanghai 201108, China
| | - Hao Li
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
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3
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Chang MY, Lin CY, Chen SM. Synthesis of 1‐Aryl Isoquinolinones or o‐Diaryl Pyrimidines via Bismuth Triflate‐Mediated Intermolecular Annulation of Arylacetic Acids with Nitroarylaldehydes or Trimethoxybenzene in the Presence of Acetonitrile. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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4
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Xu C, Li X, Bai L. Direct Aerobic α-Hydroxylation of Arylacetates for the Synthesis of Mandelates. J Org Chem 2022; 87:4298-4304. [PMID: 35245055 DOI: 10.1021/acs.joc.1c03149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Aerobic α-hydroxylation of α-methylene esters has proven challenging due to overoxidation and hydrolysis of the materials. In this article, KOtBu-promoted TBAB-catalyzed α-hydroxylation of α-methylene aryl esters using O2 as the oxygen source has been developed. Both low reaction temperature and catalyst TBAB are keys to success. This reaction provides an environmentally friendly and low-cost approach to mandelates, which are valuable building blocks and widely present in pharmaceuticals.
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Affiliation(s)
- Changming Xu
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Xiangfan Li
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Lei Bai
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
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5
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Zhou Q, Song X, Zhang X, Fan X. Synthesis of Spiro[benzo[ d][1,3]oxazine-4,4'-isoquinoline]s via [4+1+1] Annulation of N-Aryl Amidines with Diazo Homophthalimides and O 2. Org Lett 2022; 24:1280-1285. [PMID: 35129363 DOI: 10.1021/acs.orglett.1c04193] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Synthesis of spiro[benzo[d][1,3]oxazine-4,4'-isoquinoline]s through a unique [4+1+1] annulation of N-aryl amidines with diazo homophthalimides and O2 is presented. This unprecedented spirocyclization reaction features readily obtainable substrates, structurally and pharmaceutically attractive products, a cost-free and clean oxygen source, sustainable reaction medium, tolerance of a broad spectrum of functional groups, and an interesting reaction mechanism based on sequential C(sp2)-H/C(sp3)-H bond cleavage and oxygen insertion.
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Affiliation(s)
- Qianting Zhou
- NMPA Key Laboratory for Research and Evaluation of Innovative Drugs, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xia Song
- NMPA Key Laboratory for Research and Evaluation of Innovative Drugs, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drugs, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- NMPA Key Laboratory for Research and Evaluation of Innovative Drugs, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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6
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Lin X, Ge K, He N, Chen X, Li P, Dong M, Li W. Organocatalytic Enantioselective Construction of Acyclic
N
,
N
‐Acetals via Aza‐Addition of Arylamines to Ketimines. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100600] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Xiao Lin
- Department of Medicinal Chemistry, School of Pharmacy Qingdao University, Qingdao Shandong 266021 People's Republic of China
| | - Keli Ge
- School of Basic Medicine Qingdao University, Qingdao Shandong 266021 People's Republic of China
| | - Ningning He
- School of Basic Medicine Qingdao University, Qingdao Shandong 266021 People's Republic of China
| | - Xuling Chen
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology (SUSTech) Shenzhen 518055 People's Republic of China
| | - Pengfei Li
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology (SUSTech) Shenzhen 518055 People's Republic of China
| | - Mingxin Dong
- Department of Medicinal Chemistry, School of Pharmacy Qingdao University, Qingdao Shandong 266021 People's Republic of China
| | - Wenjun Li
- Department of Medicinal Chemistry, School of Pharmacy Qingdao University, Qingdao Shandong 266021 People's Republic of China
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7
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Li Y, Feng X, Jia X, Jin H, Chen F, Zhao Y, Zhang J, Wang J, Guo B, Tang L, Yang Y. Regiodivergent Functionalization of Isoquinoline‐1,3(2
H
,4
H
)‐dione Derivatives via Aerobic Umpolung. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ying‐Xian Li
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Xiao‐Bing Feng
- Xiao-Bing Feng Department of orthopaedics People's Hospital of Luzhou 646000 Luzhou P. R. China
| | - Xue‐Min Jia
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Huang Jin
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Fei Chen
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Yong‐Long Zhao
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Ji‐Quan Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Jian‐Ta Wang
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Bing Guo
- Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases Guizhou Medical University 550004 Guiyang P. R. China
| | - Lei Tang
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Yuan‐Yong Yang
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
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8
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4-Benzylideneisoquinoline-1,3( 2H, 4H)-diones as tyrosyl DNA phosphodiesterase 2 (TDP2) inhibitors. Med Chem Res 2021; 30:371-386. [PMID: 33776385 DOI: 10.1007/s00044-020-02662-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Tyrosyl-DNA phosphodiesterase 2 (TDP2) repairs topoisomerase II (Top2) mediated DNA damages, including double-strand breaks (DSBs) that underpin the anticancer mechanism of clinical TOP2 poisons such as etoposide (ETP). Inhibition of TDP2 could sensitize cancer cells toward TOP2 poisons by increasing Top2 cleavage complex. We have previously identified isoquinoline-1,3-dione as a selective inhibitor type of TDP2. However, the reported structure-activity relationship (SAR) was limited to simple substitutions on the isoquinoline-1,3-dione core. Herein, we report the extended SAR consisting of the synthesis and testing of a total of 50 analogs featuring N-2 and C-4 modifications. Major SAR observations include the loss of potency upon N-2 substitution, the lack of inhibition with C-4 enamine analogs (subtype 11), or any other C-4 modifications (subtypes 13-15) except for the benzylidene substitution (subtype 12), where eight analogs showed low micromolar potency. The best analog, 12q, inhibited TDP2 with an IC50 of 4.8 μM. Molecular modeling was performed to help understand the observed SAR trends. Overall, these SAR observations which could significantly benefit future work on the design of improved TDP2 inhibitors.
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9
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Warghude PK, Sabale AS, Dixit R, Vanka K, Bhat RG. An easy and practical approach to access multifunctional cylcopentadiene- and cyclopentene-spirooxindoles via [3 + 2] annulation. Org Biomol Chem 2021; 19:4338-4345. [PMID: 33908568 DOI: 10.1039/d1ob00514f] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A highly regioselective [3 + 2] annulation of Morita-Baylis-Hillman (MBH) carbonates of isatin with aurone/thioaurone is developed. Spiroheterocycles such as spirooxindole cyclopentadiene and spirooxindole fused hydroxy cyclopentene derivatives are constructed in one pot by exploring the reactivity of Lewis bases. Combined experimental and density functional theory (DFT) calculations offered an insight into the reaction mechanism.
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Affiliation(s)
- Prakash K Warghude
- Department of Chemistry, Indian Institute of Science Education and Research (IISER)-Pune, Dr Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India.
| | - Abhijeet S Sabale
- Department of Chemistry, Indian Institute of Science Education and Research (IISER)-Pune, Dr Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India.
| | - Ruchi Dixit
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune-411008, India and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
| | - Kumar Vanka
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune-411008, India and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
| | - Ramakrishna G Bhat
- Department of Chemistry, Indian Institute of Science Education and Research (IISER)-Pune, Dr Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India.
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10
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Wang X, Bai X, Wu C, Dong Y, Zhang M, Fan L, Tang L, Yang Y, Zhang J. Direct C(sp
3
)−H Sulfonylation and Sulfuration Reactions of Isoquinoline‐1,3(2
H
,4
H
)‐diones under Metal‐free Conditions. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000668] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Xing‐Lan Wang
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University Guiyang 550025 P. R. China
| | - Xue Bai
- Pharmacy Department of Guizhou Provincial People's Hospital Guiyang 55000 P. R. China
| | - Chun‐Feng Wu
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University Guiyang 550025 P. R. China
| | - Yong‐Xi Dong
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University Guiyang 550025 P. R. China
| | - Min Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University Guiyang 550025 P. R. China
| | - Ling‐Ling Fan
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University Guiyang 550025 P. R. China
| | - Lei Tang
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University Guiyang 550025 P. R. China
| | - Yuan‐Yong Yang
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University Guiyang 550025 P. R. China
| | - Ji‐Quan Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University Guiyang 550025 P. R. China
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11
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Liu Y, Yu Y, Sun C, Fu Y, Mang Z, Shi L, Li H. Transition-Metal Free Chemoselective Hydroxylation and Hydroxylation–Deuteration of Heterobenzylic Methylenes. Org Lett 2020; 22:8127-8131. [DOI: 10.1021/acs.orglett.0c03108] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Yonghai Liu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yang Yu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Chengyu Sun
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yiwei Fu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Zhiguo Mang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Lei Shi
- Corporate R&D Division, Firmenich Aromatics (China) Company, Ltd., Shanghai 201108, China
| | - Hao Li
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
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12
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Cheng C, Li Y, Zhang J, Zhao Y, Zhang L, Li C, Yang Y, Tang L, Yang Y. Organo‐Catalyzed Asymmetric Amination of 4‐Arylisoquinoline‐1,3(2
H
,4
H
)‐dione Derivatives in the Construction of Quaternary Stereocenters. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900980] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Cheng Cheng
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of PharmacyGuizhou Medical University Guiyang 550014 People's Republic of China
| | - Ying‐Xian Li
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of PharmacyGuizhou Medical University Guiyang 550014 People's Republic of China
| | - Ji‐Quan Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of PharmacyGuizhou Medical University Guiyang 550014 People's Republic of China
| | - Yong‐Long Zhao
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of PharmacyGuizhou Medical University Guiyang 550014 People's Republic of China
| | - Lin Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of PharmacyGuizhou Medical University Guiyang 550014 People's Republic of China
| | - Chun Li
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of PharmacyGuizhou Medical University Guiyang 550014 People's Republic of China
| | - Yu‐she Yang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia MedicaChinese Academy of Sciences Shanghai 201203 People's Republic of China
| | - Lei Tang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of PharmacyGuizhou Medical University Guiyang 550014 People's Republic of China
| | - Yuan‐Yong Yang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of PharmacyGuizhou Medical University Guiyang 550014 People's Republic of China
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13
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Hu C, Hong G, Nahide PD, He Y, Zhou C, Kozlowski MC, Wang L. C(sp 3)-H hydroxylation of fluorenes, oxindoles and benzofuranones with a Mg(NO 3) 2-HP(O)Ph 2 oxidation system. Org Chem Front 2019; 6:3167-3171. [PMID: 31516715 PMCID: PMC6739833 DOI: 10.1039/c9qo00778d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A novel oxidation system in which magnesium nitrate [Mg(NO3)2] is used as an oxidant in the presence of diphe-nylphosphine oxide [HP(O)Ph2] permits the C(sp3)-H hydroxylation of fluorenes, oxindoles, and benzofuranones. This method features high efficiency, good functional group tolerance, and operational simplicity. The synthetic utility is highlighted by further transformations to valuable organic materials.
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Affiliation(s)
- Chen Hu
- Key Laboratory for Advanced Materials, Institute of Fine Chemicals and School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
| | - Gang Hong
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Pradip D Nahide
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Yuchen He
- Key Laboratory for Advanced Materials, Institute of Fine Chemicals and School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
| | - Chen Zhou
- Key Laboratory for Advanced Materials, Institute of Fine Chemicals and School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
| | - Marisa C Kozlowski
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Limin Wang
- Key Laboratory for Advanced Materials, Institute of Fine Chemicals and School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
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14
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Metal-Free Air Oxidation in a Convenient Cascade Approach for the Access to Isoquinoline-1,3,4( 2H)-triones. Molecules 2019; 24:molecules24112177. [PMID: 31185639 PMCID: PMC6600517 DOI: 10.3390/molecules24112177] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 06/06/2019] [Accepted: 06/07/2019] [Indexed: 11/24/2022] Open
Abstract
Herein we describe a very useful application of the readily available trifunctional aromatic ketone methyl-2-(2-bromoacetyl)benzoate in reactions with primary amines. An unexpected in situ air oxidation that follows a cascade process allowed the access to a series of isoquinoline-1,3,4(2H)-triones, a class of heterocyclic compounds of great interest containing an oxygen-rich heterocyclic scaffold. A modification of the original protocol, utilizing a Staudinger reaction in the presence of trimethylphosphine, was necessary for the synthesis of Caspase inhibitor trione with free NH group.
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15
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Synthesis of chiral spiro-cyclopentene/cyclopentadiene-oxindoles through an asymmetric [3 + 2] cycloaddition of isatin-derived MBH carbonates and β,γ-unsaturated α-keto esters. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.04.040] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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16
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You Y, Lu WY, Xie KX, Zhao JQ, Wang ZH, Yuan WC. Enantioselective synthesis of isoquinoline-1,3(2H,4H)-dione derivatives via a chiral phosphoric acid catalyzed aza-Friedel-Crafts reaction. Chem Commun (Camb) 2019; 55:8478-8481. [PMID: 31268101 DOI: 10.1039/c9cc04057a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A highly enantioselective aza-Friedel-Crafts reaction of structurally new ketimines with indoles and pyrrole is developed by using a chiral phosphoric acid as the catalyst. This protocol enables the first enantioselective synthesis of isoquinoline-1,3(2H,4H)-dione derivatives in good to excellent yields (up to 99% yield) and excellent enantioselectivities (up to >99% ee).
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Affiliation(s)
- Yong You
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China.
| | - Wen-Ya Lu
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China.
| | - Ke-Xin Xie
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Jian-Qiang Zhao
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China.
| | - Zhen-Hua Wang
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China.
| | - Wei-Cheng Yuan
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China. and National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China.
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