1
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Xia D, Shi Y, Jiang L, Li Y, Kong J. Recent advances in the radical cascade reaction for constructing nitrogen heterocycles using azides as radical acceptors. Org Biomol Chem 2024; 22:5511-5523. [PMID: 38904322 DOI: 10.1039/d4ob00732h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
Due to the high conversion properties, azide compounds are widely utilized in organic synthesis. For instance, azide compounds readily release nitrogen to form a new N-C bond when they function as radical acceptors for the active intermediates in the reaction. Over the past decade, strategies employing azides as radical acceptors to construct nitrogen heterocycles have been extensively developed. This approach has emerged as a crucial method for synthesizing nitrogen heterocycles. Therefore, this paper provides a review of the research advancements in tandem cyclization reactions using azides as radical acceptors, summarizing the process of reaction design, exploration, reasoning of the mechanism, and prospects for further research of these reactions.
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Affiliation(s)
- Dong Xia
- College of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng, 224005, P. R. China.
| | - Yun Shi
- College of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng, 224005, P. R. China.
| | - Liying Jiang
- College of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng, 224005, P. R. China.
| | - Yang Li
- School of Bioengineering, Huainan Normal University, Huainan, 232038, P. R. China.
| | - Jianfei Kong
- College of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng, 224005, P. R. China.
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2
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Zhan X, Nie Z, Li N, Zhou A, Lv H, Liang M, Wu K, Cheng GJ, Yin Q. Catalytic Asymmetric Cascade Dearomatization of Indoles via a Photoinduced Pd-Catalyzed 1,2-Bisfunctionalization of Butadienes. Angew Chem Int Ed Engl 2024; 63:e202404388. [PMID: 38641988 DOI: 10.1002/anie.202404388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/17/2024] [Accepted: 04/19/2024] [Indexed: 04/21/2024]
Abstract
Photoinduced Pd-catalyzed bisfunctionalization of butadienes with a readily available organic halide and a nucleophile represents an emerging and attractive method to assemble versatile alkenes bearing various functional groups at the allylic position. However, enantiocontrol and/or diastereocontrol in the C-C or C-X bond-formation step have not been solved due to the open-shell process. Herein, we present a cascade asymmetric dearomatization reaction of indoles via photoexcited Pd-catalyzed 1,2-biscarbonfunctionalization of 1,3-butadienes, wherein asymmetric control on both the nucleophile and electrophile part is achieved for the first time in photoinduced bisfunctionalization of butadienes. This method delivers structurally novel chiral spiroindolenines bearing two contiguous stereogenic centers with high diastereomeric ratios (up to >20 : 1 dr) and good to excellent enantiomeric ratios (up to 97 : 3 er). Experimental and computational studies of the mechanism have confirmed a radical pathway involving excited-state palladium catalysis. The alignment and non-covalent interactions between the substrate and the catalyst were found to be essential for stereocontrol.
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Affiliation(s)
- Xiaohang Zhan
- Shenzhen University of Advanced Technology, and Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, 518055, Shenzhen, P. R. China
| | - Zhiwen Nie
- Shenzhen University of Advanced Technology, and Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, 518055, Shenzhen, P. R. China
| | - Na Li
- Warshel Institute for Computational Biology, School of Medicine, The Chinese University of Hong Kong, 518172, Shenzhen, Guangdong, P. R. China
| | - Ao Zhou
- Shenzhen University of Advanced Technology, and Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, 518055, Shenzhen, P. R. China
| | - Haotian Lv
- Shenzhen University of Advanced Technology, and Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, 518055, Shenzhen, P. R. China
| | - Mingrong Liang
- Shenzhen University of Advanced Technology, and Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, 518055, Shenzhen, P. R. China
| | - Keqin Wu
- Shenzhen University of Advanced Technology, and Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, 518055, Shenzhen, P. R. China
| | - Gui-Juan Cheng
- Warshel Institute for Computational Biology, School of Medicine, The Chinese University of Hong Kong, 518172, Shenzhen, Guangdong, P. R. China
| | - Qin Yin
- Shenzhen University of Advanced Technology, and Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, 518055, Shenzhen, P. R. China
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3
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Suzuki H, Ito Y, Yabe K, Takemura Y, Matsuda T. Rhodium-catalysed additive-free alkoxycarbonylation of indoles: 2,4,6-trimethylbenzoic acid-based carbonate anhydrides as a versatile alkoxycarboxyl source. Org Biomol Chem 2024; 22:3209-3214. [PMID: 38563730 DOI: 10.1039/d4ob00205a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
We report a CO-free approach to indole-2-carboxylic esters: rhodium-catalysed C(2)-alkoxycarbonylation of indoles with 2,4,6-trimethylbenzoic acid-based carbonate anhydrides. Selective C-O bond cleavage of the anhydrides facilitates the introduction of various alkoxycarbonyl groups. Control experiments suggest that merging a rhodium catalyst and KI promotes the in situ formation of the RhI species.
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Affiliation(s)
- Hirotsugu Suzuki
- Tenure-Track Program for Innovative Research, University of Fukui, 3-9-1 Bunkyo, Fukui-shi, Fukui 910-8507, Japan.
| | - Yuki Ito
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
| | - Kentaro Yabe
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
| | - Yosuke Takemura
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
| | - Takanori Matsuda
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
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4
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Rahimizadeh F, Mazloumi M, Shirini F. An efficient catalysis for the synthesis of pyrimido[1,2- a]benzimidazoles and 1-(benzothiazolylamino)methyl-2-naphthols using ZnO@SO 3H@Tropine. RSC Adv 2024; 14:13452-13462. [PMID: 38665495 PMCID: PMC11043802 DOI: 10.1039/d3ra08960f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Accepted: 03/30/2024] [Indexed: 04/28/2024] Open
Abstract
In this research and in the line of our researches on the use of nano-substrates modified with ionic liquid in organic reactions, an efficient and green method for the one-pot three-component synthesis of pyrimido[1,2-a]benzimidazole and 1-(benzothiazolylamino)methyl-2-naphthol derivatives is reported using a new nanoporous catalyst formulated as ZnO@SO3H@Tropine. Further analysis of the catalyst for its characterization has been performed using thermal gravimetric analysis (TGA), field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), energy dispersive spectrometer (EDS) and Fourier-transform infrared spectroscopy (FT-IR). The present approach creates a variety of biologically active heterocyclic compounds with excellent yields and short reaction times. Among the other advantages of the current method are: ease of operation, clean reaction profiles and ease of separation. Also, this catalyst can be reused five times without loss of its catalytic activity.
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Affiliation(s)
- Fatemeh Rahimizadeh
- Department of Chemistry, College of Science, University of Guilan Rasht 41335-19141 Iran +98 131 3233262 +98 131 3233262
| | - Masoumeh Mazloumi
- Department of Chemistry, College of Science, University of Guilan Rasht 41335-19141 Iran +98 131 3233262 +98 131 3233262
| | - Farhad Shirini
- Department of Chemistry, College of Science, University of Guilan Rasht 41335-19141 Iran +98 131 3233262 +98 131 3233262
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5
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Sadaphal VA, Wu TL, Liu RS. Synthesis of two nitrogen-containing polyaromatic compounds through gold catalysis/DBU-promoted cyclizations. Chem Commun (Camb) 2024; 60:4294-4297. [PMID: 38546213 DOI: 10.1039/d4cc00113c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
This work reports an efficient synthesis of novel benzo[7,8]indolizino[2,3,4,5-ija]quinazoline derivatives between 2-(2-ethynylaryl)acetonitriles 1 and anthranils 2. The synthetic approach involves the initial formation of 7-formylindole intermediates that can be implemented by DBU to activate a novel indole-nitrile-aldehyde cyclization.
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Affiliation(s)
| | - Tien-Lin Wu
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan, Republic of China.
| | - Rai-Shung Liu
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan, Republic of China.
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6
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Rong N, Zhou A, Liang M, Wang SG, Yin Q. Asymmetric Hydrogenation of Racemic 2-Substituted Indoles via Dynamic Kinetic Resolution: An Easy Access to Chiral Indolines Bearing Vicinal Stereogenic Centers. J Am Chem Soc 2024; 146:5081-5087. [PMID: 38358355 DOI: 10.1021/jacs.4c00298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
The asymmetric hydrogenation (AH) of N-unprotected indoles is a straightforward, yet challenging method to access biologically interesting NH chiral indolines. This method has for years been limited to 2/3-monosubstituted or 2,3-disubstituted indoles, which produce chiral indolines bearing endocyclic chiral centers. Herein, we have reported an innovative Pd-catalyzed AH of racemic α-alkyl or aryl-substituted indole-2-acetates using an acid-assisted dynamic kinetic resolution (DKR) process, affording a range of structurally fascinating chiral indolines that contain exocyclic stereocenters with excellent yields, diastereoselectivities, and enantioselectivities. Mechanistic studies support that the DKR process relies on a rapid interconversion of each enantiomer of racemic substrates, leveraged by an acid-promoted isomerization between the aromatic indole and nonaromatic exocyclic enamine intermediate. The reaction can be performed on a gram scale, and the products can be derivatized into non-natural β-amino acids via facile debenzylation and amino alcohol upon reduction.
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Affiliation(s)
- Nianxin Rong
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Ao Zhou
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
- Southern University of Science and Technology, Shenzhen, 518055, China
| | - Mingrong Liang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Shou-Guo Wang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Qin Yin
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
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7
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Ghosh M, Sahu S, Saha S, Maji MS. Construction of C2-indolyl-quaternary centers by branch-selective allylation: enabling concise total synthesis of the (±)-mersicarpine alkaloid. Chem Sci 2024; 15:1789-1795. [PMID: 38303951 PMCID: PMC10829033 DOI: 10.1039/d3sc04732f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 12/16/2023] [Indexed: 02/03/2024] Open
Abstract
Herein we report a branch-selective allylation strategy for accessing C2-indolyl-all-carbon quaternary centers using allylboronic acids. This approach boasts broad functional group tolerance, scalability, and relies on easily accessible allyl alcohol precursors. Importantly, the C3-position of the indole remains free, offering a handle for further synthetic refinement. Mechanistic pathways, corroborated by density functional theory (DFT), suggest the involvement of an indolenine intermediate and a Zimmerman-Traxler-like transition state during allylboration. Demonstrating its efficacy, the method was applied to the total synthesis of the (±)-mersicarpine alkaloid and enabled formal synthesis of additional alkaloids, such as (±)-scholarisine G, (±)-melodinine E, and (±)-leuconoxine.
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Affiliation(s)
- Minakshi Ghosh
- Department of Chemistry, Indian Institute of Technology Kharagpur Kharagpur 721302 WB India
| | - Samrat Sahu
- Department of Chemistry, Indian Institute of Technology Kharagpur Kharagpur 721302 WB India
| | - Shuvendu Saha
- Department of Chemistry, Indian Institute of Technology Kharagpur Kharagpur 721302 WB India
| | - Modhu Sudan Maji
- Department of Chemistry, Indian Institute of Technology Kharagpur Kharagpur 721302 WB India
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8
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Wen K, Chen C, Kong W, Gao Q, Shi J, Tang X. Cooperative Triple Catalysis Enables Deaminative α-Indolmethylation of Carbonyl Compounds with Gramines. J Org Chem 2024. [PMID: 38190807 DOI: 10.1021/acs.joc.3c02170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
α-Functionalization of carbonyl compounds is an important reaction in synthetic chemistry. However, the development of novel synthetic strategies to realize this reaction is challenging. This study describes the α-indolmethylation of carbonyl compounds using cooperative copper, amine, and hydrogen-bond catalysis. This reaction provides a novel and efficient strategy for developing indolmethylated carbonyl compounds by deaminative coupling of gramines.
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Affiliation(s)
- Kangmei Wen
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1023 South Shatai Road, Baiyun District, Guangzhou 510515, People's Republic of China
| | - Chen Chen
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1023 South Shatai Road, Baiyun District, Guangzhou 510515, People's Republic of China
| | - Weiya Kong
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1023 South Shatai Road, Baiyun District, Guangzhou 510515, People's Republic of China
| | - Qiwen Gao
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1023 South Shatai Road, Baiyun District, Guangzhou 510515, People's Republic of China
| | - Jie Shi
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1023 South Shatai Road, Baiyun District, Guangzhou 510515, People's Republic of China
| | - Xiaodong Tang
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1023 South Shatai Road, Baiyun District, Guangzhou 510515, People's Republic of China
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9
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Wang L, Chen S, Gao X, Liang X, Lv W, Zhang D, Jin X. Recent progress in chemistry and bioactivity of monoterpenoid indole alkaloids from the genus gelsemium: a comprehensive review. J Enzyme Inhib Med Chem 2023; 38:2155639. [PMID: 36629436 PMCID: PMC9848241 DOI: 10.1080/14756366.2022.2155639] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Monoterpenoid indole alkaloids (MIAs) represent a major class of active ingredients from the plants of the genus Gelsemium. Gelsemium MIAs with diverse chemical structures can be divided into six categories: gelsedine-, gelsemine-, humantenine-, koumine-, sarpagine- and yohimbane-type. Additionally, gelsemium MIAs exert a wide range of bioactivities, including anti-tumour, immunosuppression, anti-anxiety, analgesia, and so on. Owing to their fascinating structures and potent pharmaceutical properties, these gelsemium MIAs arouse significant organic chemists' interest to design state-of-the-art synthetic strategies for their total synthesis. In this review, we comprehensively summarised recently reported novel gelsemium MIAs, potential pharmacological activities of some active molecules, and total synthetic strategies covering the period from 2013 to 2022. It is expected that this study may open the window to timely illuminate and guide further study and development of gelsemium MIAs and their derivatives in clinical practice.
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Affiliation(s)
- Lin Wang
- School of Pharmacy, China Medical University, Shenyang, China
| | - Siyu Chen
- China Medical University-Queen’s University of Belfast Joint College, China Medical University, Shenyang, China
| | - Xun Gao
- Jiangsu Institute Marine Resources Development, Jiangsu Ocean University, Lianyungang, China
| | - Xiao Liang
- School of Pharmacy, Liaoning University, Shenyang, China
| | - Weichen Lv
- Department of Clinical Medicine, Dalian University, Dalian, China
| | - Dongfang Zhang
- School of Pharmacy, China Medical University, Shenyang, China,CONTACT Dongfang Zhang
| | - Xin Jin
- School of Pharmacy, China Medical University, Shenyang, China,Xin Jin School of Pharmacy, China Medical University, Shenyang, 110122, China
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10
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Peng Q, Huang M, Xu G, Zhu Y, Shao Y, Tang S, Zhang X, Sun J. Asymmetric N-Alkylation of 1H-Indoles via Carbene Insertion Reaction. Angew Chem Int Ed Engl 2023; 62:e202313091. [PMID: 37819054 DOI: 10.1002/anie.202313091] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 10/11/2023] [Accepted: 10/11/2023] [Indexed: 10/13/2023]
Abstract
An intermolecular enantioselective N-alkylation reaction of 1H-indoles has been developed by cooperative rhodium and chiral phosphoric acid catalyzed N-H bond insertion reaction. N-Alkyl indoles with newly formed stereocenter adjacent to the indole nitrogen atom are produced in good yields (up to 95 %) with excellent enantioselectivities (up to >99 % ee). Importantly, both α-aryl and α-alkyl diazoacetates are tolerated, which is extremely rare in asymmetric X-H (X=N, O, S et al.) and C-H insertion reactions. With this method, only 0.1 mol % of rhodium catalyst and 2.5 mol % of chiral phosphoric acid are required to complete the conversion as well as achieve the high enantioselectivity. Computational studies reveal the cooperative relay of rhodium and chiral phosphoric acid, and the origin of the chemo and stereoselectivity.
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Affiliation(s)
- Quanxin Peng
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, 213164, Changzhou, China
| | - Meirong Huang
- Shenzhen Bay Laboratory, Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, 518055, Shenzhen, China
| | - Guangyang Xu
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, 213164, Changzhou, China
| | - Yan Zhu
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, 213164, Changzhou, China
| | - Ying Shao
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, 213164, Changzhou, China
| | - Shengbiao Tang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, 213164, Changzhou, China
| | - Xinhao Zhang
- Shenzhen Bay Laboratory, Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, 518055, Shenzhen, China
| | - Jiangtao Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, 213164, Changzhou, China
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11
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Altia M, Anbarasan P. An interrupted Heyns rearrangement approach for the regioselective synthesis of acylindoles. Chem Commun (Camb) 2023; 59:13747-13750. [PMID: 37916280 DOI: 10.1039/d3cc04144a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
An efficient and general method for the synthesis of 2- and 3-acylindoles has been achieved with high regioselectivity from o-acylanilines and α-hydroxycarbonyl or its equivalent. The strategy involves the intramolecular trapping of an in situ generated aminoenol intermediate and an interrupted Heyns rearrangement pathway, followed by aromatization or rearrangement/aromatization. Important features include excellent regiocontrol, good functional group tolerance, operational simplicity and application to gram-scale synthesis and the synthesis of an anti-tumor agent.
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Affiliation(s)
- Minakshi Altia
- Department of Chemistry, Indian Institute of Technology Madras, Chennai-600036, India.
| | - Pazhamalai Anbarasan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai-600036, India.
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12
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Wang D, Leng X, Tian Y, Liu J, Zou J, Xie S. Toxic Effects of Koumine on the Early-Life Development Stage of Zebrafish. TOXICS 2023; 11:853. [PMID: 37888703 PMCID: PMC10611223 DOI: 10.3390/toxics11100853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/16/2023] [Accepted: 09/27/2023] [Indexed: 10/28/2023]
Abstract
Koumine is one of the most abundant alkaloids found in Gelsemium elegans, and it has a wide range of pharmacological effects including antitumor, anti-inflammatory, analgesic treatment effects, and antianxiety. However, its high toxicity and unclear mechanism of action have greatly limited the medicinal development and use of koumine. We investigated the toxic effects of koumine on the developmental toxicity and behavioral neurotoxicity of zebrafish embryos and larvae. Embryos at 6 h postfertilization (hpf) were exposed to 12.5, 25, 50, 75, and 100 mg/L of koumine until 120 hpf. Koumine affected the hatching and heartbeats of the embryos. The morphological analysis also revealed many abnormalities, such as shortened bodies, yolk sac edemas, tail malformations, and pericardial edemas. To identify the neurotoxicity of koumine, the behavior of the larvae was measured. Koumine at 50 and 100 mg/L affect the escape response. The embryos exhibited uncoordinated muscle contractions along the body axis in response to touch at 36 hpf. More importantly, we found that the neurotoxicity of koumine is mainly caused by influencing the ACh content and the activity of AChE without impairing motor neuron development. A comprehensive analysis shows that a high concentration of koumine has obvious toxic effects on zebrafish, and the safe concentration of koumine for zebrafish should be less than 25 mg/L. These results will be valuable for better understanding the toxicity of koumine and provide new insights into the application of koumine.
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Affiliation(s)
- Dongjie Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China;
| | - Xinyi Leng
- College of Life Sciences, Wuhan University, Wuhan 430000, China; (X.L.); (J.L.)
| | - Yao Tian
- Global Health Institute, School of Life Science, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland;
| | - Jiangdong Liu
- College of Life Sciences, Wuhan University, Wuhan 430000, China; (X.L.); (J.L.)
| | - Jixing Zou
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China;
| | - Shaolin Xie
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China;
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13
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Chen Y, Yan YH, Zhu BH, Chen F, Li L, Qian PC. Copper-Catalyzed Tandem Cyclization/Direct C(sp 2)-H Annulation of Azide-Ynamides via α-Imino Copper Carbenes: Access to Azepino[2,3- b:4,5- b']diindoles. Org Lett 2023; 25:2063-2067. [PMID: 36939559 DOI: 10.1021/acs.orglett.3c00434] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
Abstract
A novel copper-catalyzed tandem cyclization/direct C(sp2)-H annulation of phenyl azide-ynamides via α-imino copper carbenes has been developed, which provides a concise and flexible approach for the construction of a range of valuable azepino[2,3-b:4,5-b']diindoles in mostly good to excellent yields with high chemoselectivities. This tandem reaction also exhibits a broad substrate scope, excellent functional group tolerance, simple operation, and mild reaction conditions.
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Affiliation(s)
- Yi Chen
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yao-Hong Yan
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Bo-Han Zhu
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Fan Chen
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Long Li
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Peng-Cheng Qian
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China.,Wenzhou Key Laboratory of Technology and Application of Environmental Functional Materials, Institute of New Materials & Industry Technology, Wenzhou University, Wenzhou 325000, China
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14
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Zhang CY, Cao K, Liu D, Yang HB, Teng CC, Li B, Yang J. Iridium-catalyzed selective amination of B(4)-H for the synthesis of o-carborane-fused indolines. Dalton Trans 2023; 52:2933-2936. [PMID: 36815456 DOI: 10.1039/d3dt00316g] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
An iridium-catalyzed selective amination of B(4)-H via dehydrogenative cross-coupling of B-H/N-H bonds for the synthesis of o-carborane-fused indolines has been developed for the first time. Various types of unprecedented o-carborane-fused indolines have been synthesized, which would be potential candidates for applications in drug discovery, pharmaceutical chemistry and functional materials. This work offers a valuable reference for the designing and synthesis of o-carborane-fused heterocycles.
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Affiliation(s)
- Cai-Yan Zhang
- State Key Laboratory of Environment-friendly Energy Materials & School of Materials and Chemistry, Southwest University of Science and Technology, 59 Qinglong Road, Mianyang, Sichuan, P. R. China.
| | - Ke Cao
- State Key Laboratory of Environment-friendly Energy Materials & School of Materials and Chemistry, Southwest University of Science and Technology, 59 Qinglong Road, Mianyang, Sichuan, P. R. China.
| | - Dechun Liu
- State Key Laboratory of Environment-friendly Energy Materials & School of Materials and Chemistry, Southwest University of Science and Technology, 59 Qinglong Road, Mianyang, Sichuan, P. R. China.
| | - Han-Bo Yang
- State Key Laboratory of Environment-friendly Energy Materials & School of Materials and Chemistry, Southwest University of Science and Technology, 59 Qinglong Road, Mianyang, Sichuan, P. R. China.
| | - Chao-Chao Teng
- State Key Laboratory of Environment-friendly Energy Materials & School of Materials and Chemistry, Southwest University of Science and Technology, 59 Qinglong Road, Mianyang, Sichuan, P. R. China.
| | - Bo Li
- Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan 621900, P. R. China
| | - Junxiao Yang
- State Key Laboratory of Environment-friendly Energy Materials & School of Materials and Chemistry, Southwest University of Science and Technology, 59 Qinglong Road, Mianyang, Sichuan, P. R. China.
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15
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Chakraborty P, Pradhan S, Richard Premkumar J, Sundararaju B. Valorization of Terpenols Under Iron Catalysis. J Catal 2023. [DOI: 10.1016/j.jcat.2023.03.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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16
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Dutta L, Chattopadhyay A, Yadav N, Ramasastry SSV. Phosphine-catalysed denitrative rearomatising (3 + 2) annulation of α,β-ynones and 3-nitroindoles. Org Biomol Chem 2023; 21:738-742. [PMID: 36601997 DOI: 10.1039/d2ob02180c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We describe a metal-free strategy to access various α-arylidene cyclopenta[b]indoles via phosphine-catalysed (3 + 2) annulation of α,β-ynones and 3-nitroindoles. For the first time, the rearomatisation of the indole nucleus was observed in such an annulative transformation. The method was extended to the synthesis of an antimalarial natural product, bruceolline E.
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Affiliation(s)
- Lona Dutta
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, S. A. S. Nagar, Punjab 140306, India.
| | - Anwita Chattopadhyay
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, S. A. S. Nagar, Punjab 140306, India.
| | - Nisha Yadav
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, S. A. S. Nagar, Punjab 140306, India.
| | - S S V Ramasastry
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, S. A. S. Nagar, Punjab 140306, India.
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17
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Peng T, Liu T, Zhao J, Dong J, Zhao Y, Yang Y, Yan X, Xu W, Shen X. Enantioselective Total Synthesis of Spirotryprostatin A. J Org Chem 2022; 87:16743-16754. [PMID: 36445815 DOI: 10.1021/acs.joc.2c02391] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this paper, we disclosed a novel enantioselective total synthesis of spirotryprostatin A (1) in 15 steps with a 7.4% total yield from commercially available 2-iodo-5-methoxyaniline and γ-butyrolactone. The key step features of this synthesis include the copper-catalyzed cascade reaction of o-iodoaniline derivatives with alkynone to introduce the quaternary carbon stereocenter and an aza-Michael tandem reaction to construct the spiro[pyrrolidine-3,3'-oxindole] moiety.
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Affiliation(s)
- Tianfeng Peng
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing, Yunnan 655011, P. R. China
| | - Teng Liu
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing, Yunnan 655011, P. R. China
| | - Jingfeng Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, Yunnan University, Kunming, Yunnan 650091, P. R. China
| | - Jianwei Dong
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing, Yunnan 655011, P. R. China
| | - Yuxiang Zhao
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing, Yunnan 655011, P. R. China
| | - Yixiao Yang
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing, Yunnan 655011, P. R. China
| | - Xin Yan
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing, Yunnan 655011, P. R. China
| | - Wenlu Xu
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing, Yunnan 655011, P. R. China
| | - Xianfu Shen
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing, Yunnan 655011, P. R. China
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18
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Nanda T, Fastheem M, Linda A, Pati BV, Banjare SK, Biswal P, Ravikumar PC. Recent Advancement in Palladium-Catalyzed C–C Bond Activation of Strained Ring Systems: Three- and Four-Membered Carbocycles as Prominent C3/C4 Building Blocks. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tanmayee Nanda
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, Odisha 752050, India
- Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Muhammed Fastheem
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, Odisha 752050, India
- Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Astha Linda
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, Odisha 752050, India
- Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Bedadyuti Vedvyas Pati
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, Odisha 752050, India
- Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Shyam Kumar Banjare
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, Odisha 752050, India
- Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Pragati Biswal
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, Odisha 752050, India
- Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Ponneri C. Ravikumar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, Odisha 752050, India
- Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
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19
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Wu J, Tongdee S, Cordier M, Darcel C. Selective Iron Catalyzed Synthesis of N-Alkylated Indolines and Indoles. Chemistry 2022; 28:e202201809. [PMID: 35700072 PMCID: PMC9796591 DOI: 10.1002/chem.202201809] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Indexed: 01/01/2023]
Abstract
Whereas iron catalysts usually promote catalyzed C3-alkylation of indole derivatives via a borrowing-hydrogen methodology using alcohols as the electrophilic partners, this contribution shows how to switch the selectivity towards N-alkylation. Thus, starting from indoline derivatives, N-alkylation was efficiently performed using a tricarbonyl(cyclopentadienone) iron complex as the catalyst in trifluoroethanol in the presence of alcohols leading to the corresponding N-alkylated indoline derivatives in 31-99 % yields (28 examples). The one-pot, two-step strategy for the selective N-alkylation of indolines is completed by an oxidation to give the corresponding N-alkylated indoles in 31-90 % yields (15 examples). This unprecedented oxidation methodology involves an iron salt catalyst associated with (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO) and a stoichiometric amount of t-BuOOH at room temperature.
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Affiliation(s)
- Jiajun Wu
- Univ RennesCNRSISCR (Institut des Sciences Chimiques de Rennes) UMR 622635000RennesFrance
| | - Satawat Tongdee
- Univ RennesCNRSISCR (Institut des Sciences Chimiques de Rennes) UMR 622635000RennesFrance
| | - Marie Cordier
- Univ RennesCNRSISCR (Institut des Sciences Chimiques de Rennes) UMR 622635000RennesFrance
| | - Christophe Darcel
- Univ RennesCNRSISCR (Institut des Sciences Chimiques de Rennes) UMR 622635000RennesFrance
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20
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Corti V, Thøgersen MK, Enemærke VJ, Rezayee NM, Barløse CL, Anker Jørgensen K. Construction of C‐N Atropisomers by Aminocatalytic Enantioselective Addition of Indole‐2‐carboxaldehydes to
o
‐Quinone Derivatives. Chemistry 2022; 28:e202202395. [DOI: 10.1002/chem.202202395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Vasco Corti
- Department of Chemistry Aarhus University Aarhus 8000 Aarhus C Denmark
| | | | | | - Nomaan M. Rezayee
- Department of Chemistry Aarhus University Aarhus 8000 Aarhus C Denmark
| | - Casper L. Barløse
- Department of Chemistry Aarhus University Aarhus 8000 Aarhus C Denmark
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21
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Zhao C, Liu Y, Zhang X, He G, Liu H, Ji D, Hu Y, Chen Q. Bioinspired and Ligand‐Regulated Unnatural Prenylation and Geranylation of Oxindoles with Isoprene under Pd Catalysis. Angew Chem Int Ed Engl 2022; 61:e202207202. [DOI: 10.1002/anie.202207202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Chao‐Yang Zhao
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Ying‐Ying Liu
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Xiang‐Xin Zhang
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Gu‐Cheng He
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Heng Liu
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Ding‐Wei Ji
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Yan‐Cheng Hu
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Qing‐An Chen
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
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22
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Devi N, Singh V. Morita–Baylis–Hillman reaction of 3-formyl-9 H-pyrido[3,4- b]indoles and fluorescence studies of the products. Beilstein J Org Chem 2022; 18:926-934. [PMID: 35957752 PMCID: PMC9344545 DOI: 10.3762/bjoc.18.92] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 07/01/2022] [Indexed: 11/23/2022] Open
Abstract
β-Carboline is a privileged class of the alkaloid family and is associated with a broad spectrum of biological properties. 3-Formyl-9H-pyrido[3,4-b]indole is a such potent precursor belonging to this family which can be tailored for installing diversity at various positions of β-carboline to generate unique molecular hybrids of biological importance. The present work is a step towards this and assimilates the results related to the exploration of 3-formyl-9H-β-carbolines for the synthesis of β-carboline C-3 substituted MBH adducts followed by evaluation of their fluorescent characteristic. The effect of contact time, solvent system, concentration and substituents was also studied during investigation of fluorescence properties of these derivatives.
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Affiliation(s)
- Nisha Devi
- Department of Chemistry, DAV University, Jalandhar-Pathankot National Highway (NH 44), Jalandhar, 144012, Punjab, India
| | - Virender Singh
- Department of Chemistry, Central University of Punjab, Bathinda, India
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23
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Cremer C, Patureau FW. O 2-Mediated Te(II)-Redox Catalysis for the Cross-Dehydrogenative Coupling of Indoles. JACS AU 2022; 2:1318-1323. [PMID: 35783164 PMCID: PMC9241012 DOI: 10.1021/jacsau.2c00193] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/19/2022] [Accepted: 05/20/2022] [Indexed: 05/09/2023]
Abstract
Very few elements in the periodic system can catalytically activate O2, such as in the context of cross-dehydrogenative couplings. The development of O2-activating catalysts is essential to enable new and sustainable reactivity concepts to emerge, because these catalysts also often feature specific activating interactions with the target substrates. In this context, the unprecedented Te(II)/Te(III) catalyzed dehydrogenative C3-C2 dimerization of indoles is described herein. The fact that O2 can be directly utilized as a terminal oxidant in this reaction, as well as the absence of any background reactivity without the redox-active Te catalyst, constitute very important milestones for the fields of cross-dehydrogenative couplings and tellurium catalysis.
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24
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Zhao C, Liu Y, Zhang X, He G, Liu H, Ji D, Hu Y, Chen Q. Bioinspired and Ligand‐Regulated Unnatural Prenylation and Geranylation of Oxindoles with Isoprene under Pd Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Chao‐Yang Zhao
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Ying‐Ying Liu
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Xiang‐Xin Zhang
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Gu‐Cheng He
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Heng Liu
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Ding‐Wei Ji
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Yan‐Cheng Hu
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Qing‐An Chen
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
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25
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Singh I, Srivastava R, Shukla VK, Pathak SK, Burman T, Al-Mutairi AA, El-Emam AA, Prasad O, Sinha L. Spectroscopic, electronic structure, molecular docking, and molecular dynamics simulation study of 7-Trifluoromethyl-1H-indole-2-carboxylic acid as an aromatase inhibitor. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 280:121530. [PMID: 35752037 DOI: 10.1016/j.saa.2022.121530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 06/12/2022] [Accepted: 06/16/2022] [Indexed: 10/31/2022]
Abstract
The present work encompasses a combined experimental and theoretical investigation of the molecular structure, vibrational wavenumbers, electronic structure at the ground and electronic excited states, molecular electrostatic potential surface of 7-(Trifluoromethyl)-1H-indole-2-carboxylic acid (TICA) and possibility of the title molecule as an aromatase inhibitor using molecular docking and molecular dynamic simulations. A stable conformer has been obtained using potential energy scans by varying appropriate dihedral angles. The obtained minimum energy conformer was further optimized at the 6-311++G (d, p) basis set by applying the most accepted B3LYP functional. A good agreement between experimental and calculated normal modes of vibration has been observed. The hydrogen-bonded interaction between two monomeric units of TICA has been investigated using NBO,QTAIM, and NCI (noncovalent interactions) analysis. Molecular docking of TICA with human placental aromatase (PDB ID: 3S79) reveals the formation of polar hydrogen bonds as well as hydrophobic interactions between the ligand and the protein, right in the binding cavity. TICA satisfies all pharmacokinetic filters (Lipinski rule of five, the Veber rule, Ghose rule, Egan rule, as well as the Muegge rule) and has a high bioavailability score of 0.85. Dynamic stability of the ligand within the binding pocket of the target protein has been confirmed by 100 ns molecular dynamics simulation results. The present study provides an excellent starting point for additional in vivo research, and TICA may eventually serve as a significant therapeutic candidate for the treatment of breast cancer.
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Affiliation(s)
- Isha Singh
- Department of Physics, University of Lucknow, 226007 Lucknow, India
| | - Ruchi Srivastava
- Department of Physics, University of Lucknow, 226007 Lucknow, India
| | - Vikas K Shukla
- Department of Physics, Maharishi University of Information Technology Lucknow, Uttar Pradesh, India
| | - Shilendra K Pathak
- Department of Physics, M. M. M. P. G. College, Bhatpar Rani, Deoria, India
| | | | - Aamal A Al-Mutairi
- Department of Chemistry, College of Sciences, Imam Mohammad lbn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
| | - Ali A El-Emam
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Onkar Prasad
- Department of Physics, University of Lucknow, 226007 Lucknow, India
| | - Leena Sinha
- Department of Physics, University of Lucknow, 226007 Lucknow, India.
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26
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Mishra DR, Panda BS, Nayak S, Panda J, Mohapatra S. Recent Advances in the Synthesis of 5‐Membered
N
‐Heterocycles via Rhodium Catalysed Cascade Reactions. ChemistrySelect 2022. [DOI: 10.1002/slct.202200531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Deepak R. Mishra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Bhabani S. Panda
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Sabita Nayak
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Jasmine Panda
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Seetaram Mohapatra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
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27
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Yu C, Xu Y, Zhang X, Fan X. Synthesis of N-Arylindoles from 2-Alkenylanilines and Diazonaphthalen-2(1 H)-ones through Simultaneous Indole Construction and Aryl Introduction. J Org Chem 2022; 87:7392-7404. [PMID: 35594494 DOI: 10.1021/acs.joc.2c00628] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In this paper, an efficient synthesis of N-arylindoles through the cascade reaction of 2-alkenylanilines with diazonaphthalen-2(1H)-ones is presented. Mechanistically, this reaction involves the generation of a Ru-carbene complex from diazonaphthalen-2(1H)-one, followed by carbene N-H bond insertion with 2-alkenylaniline, intramolecular cyclization, and oxidative aromatization. In this reaction, the Ru(II) complex acts as a multifunctional catalyst to promote not only the carbene formation but also the intramolecular cyclization and the dehydrogenative aromatization. Meanwhile, air acts as a green and cost-effective oxidant. To our knowledge, this is the first example in which N-arylindoles were synthesized through simultaneous introduction of the N-aryl unit and construction of the indole scaffold. Notable advantages of this method include readily accessible and halide-free substrates, additive-free reaction conditions, good efficiency, excellent atom economy, and compatibility with diverse functional groups. In addition, the utility of the product thus obtained was showcased by its diverse structural transformations.
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Affiliation(s)
- Caiyun Yu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, China
| | - Yuanshuang Xu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, China
| | - Xinying Zhang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, China
| | - Xuesen Fan
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, China
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28
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Tian HZ, Wu SF, Lin GQ, Sun XW. Asymmetric synthesis of pyrrolo[2,3–b]indole scaffolds by organocatalytic [3 + 2] dearomative annulation. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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29
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Wu J, Liu Y, Qian B, Yang H, Lu L, Zhang J, Shang Y. Catalytic Ring Expansion of Indole toward Dibenzoazepine Analogues Enabled by Cationic Palladium(II) Complexes. ACS Catal 2022. [DOI: 10.1021/acscatal.1c06021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Jiaping Wu
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Yanfei Liu
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Baiyang Qian
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Haitao Yang
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Lili Lu
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Jitan Zhang
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Yongjia Shang
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
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30
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Design, synthesis, and applications of stereospecific 1,3-diene carbonyls. Sci China Chem 2022. [DOI: 10.1007/s11426-021-1204-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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31
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Murugan S, Zhong HJ, Wu CY, Pan HW, Chen C, Lee GH. Camphorsulfonic Acid-Mediated One-Pot Tandem Consecutive via the Ugi Four-Component Reaction for the Synthesis of Functionalized Indole and 2-Quinolone Derivatives by Switching Solvents. ACS OMEGA 2022; 7:5713-5729. [PMID: 35224332 PMCID: PMC8867550 DOI: 10.1021/acsomega.1c05460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 01/28/2022] [Indexed: 06/14/2023]
Abstract
A camphorsulfonic acid-mediated one-pot tandem consecutive approach was developed to synthesize functionalized indole and 2-quinolone derivatives from the Ugi four-component reaction by switching solvents. A reaction of the Ugi adduct in an aprotic solvent undergoes 5-exo-trig cyclization to form an indole ring. In a protic solvent, however, the Ugi adduct undergoes an alkyne-carbonyl metathesis reaction to form a 2-quinolone ring.
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Affiliation(s)
- Sivan
Perumal Murugan
- Department
of Chemistry, National Dong Hwa University, Shoufeng, Hualien 974301, Taiwan
| | - Hong-Jie Zhong
- Department
of Chemistry, National Dong Hwa University, Shoufeng, Hualien 974301, Taiwan
| | - Chih-Yu Wu
- Department
of Nursing, Tzu Chi University of Science
and Technology, Hualien 970302, Taiwan
| | - Hao-Wei Pan
- Department
of Chemistry, National Dong Hwa University, Shoufeng, Hualien 974301, Taiwan
| | - Chinpiao Chen
- Department
of Chemistry, National Dong Hwa University, Shoufeng, Hualien 974301, Taiwan
- Department
of Nursing, Tzu Chi University of Science
and Technology, Hualien 970302, Taiwan
| | - Gene-Hsian Lee
- Instrumentation
Center, College of Science, National Taiwan
University, Taipei 10617, Taiwan
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32
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Huang W, Chen Z, Li‐Xia L, Zhou Y, Bo W, Jiang G. A Facile Synthesis of Pyrrolo[2,3‐
j
]phenanthridines
via
the Cascade Reaction of Indoleanilines and Aldehydes. J Heterocycl Chem 2022. [DOI: 10.1002/jhet.4444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wen‐Jun Huang
- Advanced Catalytic Engineer Research Center of Ministry of Education, College of Chemistry and Chemical Engineering Hunan University Changsha China
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian China
| | - Zhi‐Peng Chen
- Advanced Catalytic Engineer Research Center of Ministry of Education, College of Chemistry and Chemical Engineering Hunan University Changsha China
| | - Liu Li‐Xia
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian China
| | - Yong‐Gui Zhou
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian China
| | - Wu Bo
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian China
| | - Guo‐Fang Jiang
- Advanced Catalytic Engineer Research Center of Ministry of Education, College of Chemistry and Chemical Engineering Hunan University Changsha China
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33
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Sun P, Jia ZH, Tang L, Zheng H, Li ZR, Chen LY, Li Y. Enantioselective Synthesis of 2-Indolyl Methanamine Derivatives Through Disulfonimides-Catalyzed Friedel–Crafts C2-Alkylation of 3-Substituted Indoles with Imines. Org Biomol Chem 2022; 20:1916-1925. [DOI: 10.1039/d1ob02281d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An asymmetric Friedel-Crafts C2-alkylation between 3-substituted indoles and imines catalyzed by chiral BINOL-derived disulfonimides (DSIs) has been developed. This reaction tolerated a wide range of 3-substituted indoles and imines, affording...
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34
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Yang F, Hu Y, Wang L, Wu M, Yuan X, Liu Z, Li X, Wang Z, Zheng H. Palladium‐Catalyzed Coupling Reaction of o‐Alkenyl Chloroformylaniline with o‐Alkynylaniline: An Approach to Indolylmethyl Oxindole. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Fanpeng Yang
- Northwest A&F University: Northwest Agriculture and Forestry University College of Chemistry and Pharmacy CHINA
| | - Yina Hu
- Northwest A&F University: Northwest Agriculture and Forestry University College of Chemistry and Pharmacy CHINA
| | - Lu Wang
- Northwest A&F University: Northwest Agriculture and Forestry University College of Chemistry and Pharmacy CHINA
| | - Miaomiao Wu
- Northwest A&F University: Northwest Agriculture and Forestry University College of Chemistry and Pharmacy CHINA
| | - Xiaowen Yuan
- Northwest A&F University: Northwest Agriculture and Forestry University College of Chemistry and Pharmacy CHINA
| | - Zhigang Liu
- Northwest A&F University: Northwest Agriculture and Forestry University College of Chemistry and Pharmacy CHINA
| | - Xiuhuan Li
- Northwest A&F University: Northwest Agriculture and Forestry University State Key Laboratory of Crop Stress Biology for Arid Areas CHINA
| | - Zhengshen Wang
- Northwest Agriculture University: Northwest Agriculture and Forestry University College of Chemistry and Pharmacy CHINA
| | - Huaiji Zheng
- Northwest Agriculture and Forestry University College of Chemistry and Pharmacy 3 Taicheng Road 712100 Yangling CHINA
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35
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Zhang J, Chen J, Zhai Y, Yu J, Pan C. Three‐Component Vicinal Sulfonamination of Alkynes toward 3‐Sulfonylindoles via the Insertion of Sulfur Dioxide. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100671] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jie Zhang
- School of Petrochemical Engineering Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology Changzhou University Changzhou 213164 P. R. China
| | - Jian Chen
- Jiangsu LtestingTechnology Co., Ltd. Wuxi 214142 P. R. China
| | - Yongheng Zhai
- Jiangsu LtestingTechnology Co., Ltd. Wuxi 214142 P. R. China
| | - Jin‐Tao Yu
- School of Petrochemical Engineering Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology Changzhou University Changzhou 213164 P. R. China
| | - Changduo Pan
- School of Petrochemical Engineering Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology Changzhou University Changzhou 213164 P. R. China
- School of Chemical and Environmental Engineering Jiangsu University of Technology Changzhou 213001 P. R. China
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36
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Park SA, Park JU, Kim YL, Kim JH. Transition Metal-Free, Methoxide-Catalyzed Synthesis of Pyridoindolones. J Org Chem 2021; 86:17050-17062. [PMID: 34761671 DOI: 10.1021/acs.joc.1c02176] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A simple transition metal-free strategy for the synthesis of pyrido[1,2-a]indolone derivatives has been devised through sodium methoxide-catalyzed intramolecular cyclization of 2-alkenylated N-pyrimidyl indoles. The reactions involved a Smiles rearrangement/cyclization cascade, which resulted in a new series of N-fused indoles, potentially applicable skeletons in medicinal chemistry. This reaction presents simple eco-friendly reaction conditions, a high atom- and cost-economy, a short reaction time, and a broad range of substrate scope with high reaction efficiency.
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Affiliation(s)
- Sun-A Park
- Department of Chemistry (BK21 Four), Research Institute of Natural Science, Gyeongsang National University, 52828 Jinju, Korea
| | - Jong-Un Park
- Department of Chemistry (BK21 Four), Research Institute of Natural Science, Gyeongsang National University, 52828 Jinju, Korea
| | - Ye Lim Kim
- Department of Chemistry (BK21 Four), Research Institute of Natural Science, Gyeongsang National University, 52828 Jinju, Korea
| | - Ju Hyun Kim
- Department of Chemistry (BK21 Four), Research Institute of Natural Science, Gyeongsang National University, 52828 Jinju, Korea
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37
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Qin Q, Liu XL, Ma AJ, Zhang XZ, Peng JB. Unprecedented Multicomponent Reaction of Indoles, CS 2 and Nitroarenes: Stereoselective Synthesis of (Z)-3-((Arylamino)methylene)indoline-2-thiones. Chem Asian J 2021; 16:3890-3894. [PMID: 34605195 DOI: 10.1002/asia.202101008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 09/18/2021] [Indexed: 12/11/2022]
Abstract
An efficient method for the stereoselective synthesis of (Z)-3-((arylamino)methylene)indoline-2-thiones have been developed via a novel multicomponent reaction of indoles, CS2 and nitroarenes. A range of functionalized indoline-2-thiones were prepared in moderate to good yields from easily available starting materials. The indoline-2-thione products can be easily derivatized to give biologically active thieno[2,3-b]indole and thiopyrano[2,3-b]indole skeletons in high yields.
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Affiliation(s)
- Qi Qin
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong, 529020, P. R. China
| | - Xin-Lian Liu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong, 529020, P. R. China
| | - Ai-Jun Ma
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong, 529020, P. R. China
| | - Xiang-Zhi Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong, 529020, P. R. China
| | - Jin-Bao Peng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong, 529020, P. R. China
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38
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Faltracco M, Ruijter E. Synthesis of tetracyclic spiroindolines by an interrupted Bischler-Napieralski reaction: total synthesis of akuammicine. Org Biomol Chem 2021; 19:9641-9644. [PMID: 34724022 PMCID: PMC8600370 DOI: 10.1039/d1ob01966j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Judicious substrate design allows interruption of the classical Bischler–Napieralski reaction, providing access to a range of diversely substituted tetracyclic spiroindolines. These complex polycyclic scaffolds are valuable building blocks for the construction of indole alkaloids, as showcased in a concise total synthesis of (±)-akuammicine. The interrupted Bischler–Napieralski reaction of β,γ-unsaturated tryptamides affords tetracyclic spiro pyrroloindolines, which can be used in the total synthesis of the Strychnos alkaloid, akuammicine.![]()
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Affiliation(s)
- Matteo Faltracco
- Department of Chemistry & Pharmaceutical Sciences, Amsterdam Institute of Molecular & Life Sciences (AIMMS), Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands.
| | - Eelco Ruijter
- Department of Chemistry & Pharmaceutical Sciences, Amsterdam Institute of Molecular & Life Sciences (AIMMS), Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands.
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39
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Wang C, Pang Y, Wu Y, Zhang N, Yang R, Li Y, Chen P, Jiang H, Xu X, Kam T, Fan T, Ma Z. Divergent Synthesis of Skeletally Distinct Arboridinine and Arborisidine. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202110149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Cheng Wang
- Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry & Chemical Engineering South China University of Technology Wushan Road-381 Guangzhou 510641 China
| | - Yubing Pang
- Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry & Chemical Engineering South China University of Technology Wushan Road-381 Guangzhou 510641 China
| | - Yuecheng Wu
- Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry & Chemical Engineering South China University of Technology Wushan Road-381 Guangzhou 510641 China
| | - Nanping Zhang
- Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry & Chemical Engineering South China University of Technology Wushan Road-381 Guangzhou 510641 China
| | - Rui Yang
- Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry & Chemical Engineering South China University of Technology Wushan Road-381 Guangzhou 510641 China
| | - Ying Li
- School of Biotechnology and Health Sciences Wuyi University Jiangmen 529020 P. R. China
| | - Pengquan Chen
- Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry & Chemical Engineering South China University of Technology Wushan Road-381 Guangzhou 510641 China
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry & Chemical Engineering South China University of Technology Wushan Road-381 Guangzhou 510641 China
| | - Xue‐Tao Xu
- School of Biotechnology and Health Sciences Wuyi University Jiangmen 529020 P. R. China
| | - Toh‐Seok Kam
- Department of Chemistry Faculty of Science University of Malaya 50603 Kuala Lumpur Malaysia
| | - Ting Fan
- Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry & Chemical Engineering South China University of Technology Wushan Road-381 Guangzhou 510641 China
| | - Zhiqiang Ma
- Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry & Chemical Engineering South China University of Technology Wushan Road-381 Guangzhou 510641 China
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40
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Li R, Jiang S, Zheng H, Lei H, Huang Z, Chen S, Deng GJ. Iron-catalyzed indolo[2,3-c]quinoline synthesis from nitroarenes and benzylic alcohols/aldehydes promoted by elemental sulfur. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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41
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42
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Wang C, Pang Y, Wu Y, Zhang N, Yang R, Li Y, Chen P, Jiang H, Xu XT, Kam TS, Fan T, Ma Z. Divergent Synthesis of Skeletally Distinct Arboridinine and Arborisidine. Angew Chem Int Ed Engl 2021; 60:26978-26985. [PMID: 34665909 DOI: 10.1002/anie.202110149] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Indexed: 01/10/2023]
Abstract
A divergent synthesis of skeletally distinct arboridinine and arborisidine was achieved. The central divergent strategy was inspired by the divergent biosynthetic cyclization mode of arboridinine and arborisidine and their hidden topological connection. The branch point was reached through a Michael and Mannich cascade process. A site-selective intramolecular Mannich reaction was developed to construct the tetracyclic core of arboridinine, while a site-selective intramolecular α-amination of ketone was used to access the tetracyclic core of arborisidine. A strategic Peterson olefination through intramolecular nucleophile delivery was able to set up the exocyclic olefin of arboridinine.
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Affiliation(s)
- Cheng Wang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, China
| | - Yubing Pang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, China
| | - Yuecheng Wu
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, China
| | - Nanping Zhang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, China
| | - Rui Yang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, China
| | - Ying Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, P. R. China
| | - Pengquan Chen
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, China
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, China
| | - Xue-Tao Xu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, P. R. China
| | - Toh-Seok Kam
- Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Ting Fan
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, China
| | - Zhiqiang Ma
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, China
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43
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Faltracco M, Damian M, Ruijter E. Synthesis of Carbazoles and Dihydrocarbazoles by a Divergent Cascade Reaction of Donor-Acceptor Cyclopropanes. Org Lett 2021; 23:7592-7596. [PMID: 34543040 PMCID: PMC8491164 DOI: 10.1021/acs.orglett.1c02795] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
An alkylation/olefination
cascade of indolecarboxaldehydes and
phosphonate-functionalized donor–acceptor cyclopropanes affords
functionalized dihydrocarbazoles and cyclohepta[cd]indoles in formal (3 + 3) and (4 + 3) cycloadditions. A minor modification
to the reaction conditions also allows access to the fully aromatic
heterocyclic scaffolds by thermal loss of an electron-rich aryl moiety.
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Affiliation(s)
- Matteo Faltracco
- Department of Chemistry & Pharmaceutical Sciences, Amsterdam Institute of Molecular & Life Sciences (AIMMS), Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Matteo Damian
- Department of Chemistry & Pharmaceutical Sciences, Amsterdam Institute of Molecular & Life Sciences (AIMMS), Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Eelco Ruijter
- Department of Chemistry & Pharmaceutical Sciences, Amsterdam Institute of Molecular & Life Sciences (AIMMS), Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
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44
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Prasad B, Phanindrudu M, Nanubolu JB, Kamal A, Tiwari DK. Stereoselective synthesis of ( Z)-1,3-bis(α,β-unsaturated carbonyl)-isoindolines from aldehydes and phenacyl azides under metal free conditions. Chem Commun (Camb) 2021; 57:9542-9545. [PMID: 34546244 DOI: 10.1039/d1cc02884g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here in the present manuscript, we report our observation of an unprecedented stereoselective synthesis of 2H-isoindolin-1,3-ylidenes from 2-(formylphenyl)acrylates and phenacylazide in the presence of piperidine. Unlike in our previous findings, in which we accessed 3-keto-isoquinolines from the same starting materials under slightly modified reaction conditions, this unexpected one-pot tandem reaction allows an efficient and simple method to access a variety of highly functionalized ethyl (Z)-2-((Z)-3-(2-oxo-2-arylethylidene)-2,3-dihydro-1H-benzo[e]isoindol-1-ylidene)-acetates in very good to excellent yields (up to 91%). The present methodology is compatible with a wide variety of functional groups.
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Affiliation(s)
- Budaganaboyina Prasad
- Division of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Mandalaparthi Phanindrudu
- Division of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Jagadeesh Babu Nanubolu
- X-Ray crystallography Center CSIR-Indian Institute of Chemical Technology Uppal road, Tarnaka, Hyderabad 500607, India
| | - Ahmed Kamal
- School of Pharmaceutical Education and Research (SPER), Jamia Hamdard, 110 062, New Delhi, India
| | - Dharmendra Kumar Tiwari
- Molecular Synthesis and Drug Discovery Unit, Centre of Biomedical Research (CBMR), Raibareli Rad, Lucknow, U.P. 226014, India.
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45
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Devkota S, Kim S, Yoo SY, Mohandoss S, Baik MH, Lee YR. Ruthenium(ii)-catalyzed regioselective direct C4- and C5-diamidation of indoles and mechanistic studies. Chem Sci 2021; 12:11427-11437. [PMID: 34567497 PMCID: PMC8409494 DOI: 10.1039/d1sc02138a] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 07/20/2021] [Indexed: 11/21/2022] Open
Abstract
A ruthenium(ii)-catalyzed regioselective direct diamidation of 3-carbonylindoles at the C4- and C5-positions using various dioxazolones is described. This novel protocol allows for the effective installation of two amide groups on the benzene ring in indole. A remarkably broad substrate scope, excellent functional group tolerance, and mild reaction conditions are notable features of this protocol. Further explorations reveal that benzo[b]thiophene-3-carboxaldehyde is a viable substrate and affords its corresponding diamidation products. The diamido indoles are further converted into various functionalized products and used as sensors for metal ion detection. Density functional theory studies are also conducted to propose a reaction mechanism and provide a detailed understanding of the regioselectivity observed in the reaction. Ruthenium(ii)-catalyzed regioselective C4-/C5-diamidation of 3-carbonylindoles is described and a DFT study is conducted to understand the observed regioselectivity and the mechanism.![]()
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Affiliation(s)
- Shreedhar Devkota
- School of Chemical Engineering, Yeungnam University Gyeongsan 38541 Republic of Korea
| | - Suyeon Kim
- Department of Chemistry, Korea Advanced Institute of Technology (KAIST) Daejeon 34141 Republic of Korea .,Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS) Daejeon 34141 Republic of Korea
| | - Seok Yeol Yoo
- Department of Chemistry, Korea Advanced Institute of Technology (KAIST) Daejeon 34141 Republic of Korea .,Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS) Daejeon 34141 Republic of Korea
| | - Sonaimuthu Mohandoss
- School of Chemical Engineering, Yeungnam University Gyeongsan 38541 Republic of Korea
| | - Mu-Hyun Baik
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS) Daejeon 34141 Republic of Korea.,Department of Chemistry, Korea Advanced Institute of Technology (KAIST) Daejeon 34141 Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University Gyeongsan 38541 Republic of Korea
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46
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Liu L, Li L, Wang X, Sun R, Zhou MD, Wang H. Mn(III)-Mediated Radical Cyclization of o-Alkenyl Aromatic Isocyanides with Boronic Acids: Access to N-Unprotected 2-Aryl-3-cyanoindoles. Org Lett 2021; 23:5826-5830. [PMID: 34323503 DOI: 10.1021/acs.orglett.1c01979] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The synthesis of N-unprotected 2-aryl-3-cyanoindoles was realized via the Mn(III)-mediated radical cascade cyclization of o-alkenyl aromatic isocyanides with boronic acids. A possible mechanism involving a sequential intermolecular radical addition, intramolecular cyclization, and cleavage of the C-C bond under mild reaction conditions is proposed. Mechanism studies show that H2O or O2 might provide the oxygen source for the elimination of benzaldehyde.
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Affiliation(s)
- Lu Liu
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, P. R. China
| | - Lei Li
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, P. R. China
| | - Xin Wang
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, P. R. China
| | - Ran Sun
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, P. R. China
| | - Ming-Dong Zhou
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, P. R. China
| | - He Wang
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, P. R. China
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47
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Yang Y, Li N, Zhao J, Jiang Y, Zhang X, Fan X. Selective Synthesis of 3‐(α‐Fluorovinyl)indoles and 3‐Acylindoles via the Cascade Reactions of 1‐Phenylpyrazolidinones with α,α‐Difluoromethylene Alkynes. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100441] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Yujie Yang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug 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 People's Republic of China
| | - Na Li
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug 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 People's Republic of China
| | - Jie Zhao
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug 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 People's Republic of China
| | - Yuqin Jiang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug 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 People's Republic of China
| | - Xinying Zhang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug 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 People's Republic of China
| | - Xuesen Fan
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug 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 People's Republic of China
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48
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Kiyokawa K, Urashima N, Minakata S. Tris(pentafluorophenyl)borane-Catalyzed Formal Cyanoalkylation of Indoles with Cyanohydrins. J Org Chem 2021; 86:8389-8401. [PMID: 34077225 DOI: 10.1021/acs.joc.1c00808] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Despite the significant achievements related to the C3 functionalization of indoles, cyanoalkylation reactions continue to remain rather limited. We herein report on the formal C3 cyanoalkylation of indoles with cyanohydrins in the presence of a tris(pentafluorophenyl)borane (B(C6F5)3) catalyst. It is noteworthy that cyanohydrins are used as a cyanoalkylating reagent in the present reaction, even though they are usually used as only a HCN source. Mechanistic investigations revealed the unique reactivity of the B(C6F5)3 catalyst in promoting the decomposition of a cyanohydrin by a Lewis acidic activation through the coordination of the cyano group to the boron center. In addition, a catalytic three-component reaction using indoles, aldehydes as a carbon unit, and acetone cyanohydrin that avoids the discrete preparation of each aldehyde-derived cyanohydrin is also reported. The developed methods provide straightforward, highly efficient, and atom-economic access to various types of synthetically useful indole-3-acetonitrile derivatives containing α-tertiary or quaternary carbon centers.
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Affiliation(s)
- Kensuke Kiyokawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Naruyo Urashima
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
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49
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Qi Z, Li L, Liang YK, Ma AJ, Zhang XZ, Peng JB. Visible-Light-Induced Carbonylation of Indoles with Phenols under Metal-Free Conditions: Synthesis of Indole-3-carboxylates. Org Lett 2021; 23:4769-4773. [PMID: 34060850 DOI: 10.1021/acs.orglett.1c01494] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A visible-light-induced carbonylation of indoles with phenols for the synthesis of indole-3-carboxylates has been developed. The reaction proceeded via a radical carbonylation process in which elementary I2 was used as an effective photosensitive initiator and, thus, avoided the use of transition metal catalysts. A series of different aryl indole-3-carboxylates were prepared in moderate to good yields. The broad applicability of this methodology was further highlighted by the late-stage functionalization of several phenol-containing natural products and pharmaceuticals.
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Affiliation(s)
- Zhuang Qi
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, People's Republic of China
| | - Lin Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, People's Republic of China
| | - Ying-Kang Liang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, People's Republic of China
| | - Ai-Jun Ma
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, People's Republic of China
| | - Xiang-Zhi Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, People's Republic of China
| | - Jin-Bao Peng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, People's Republic of China
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Li J, Chen J, Wang L, Shi Y. Palladium-Catalyzed Sequential C-H Activation/Amination with Diaziridinone: An Approach to Indoles. Org Lett 2021; 23:3646-3651. [PMID: 33861616 DOI: 10.1021/acs.orglett.1c01043] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Indoles are an important class of molecules. This paper describes an efficient palladium-catalyzed synthesis of indoles from 2-iodostyrenes and di-t-butyldiaziridinone with a simultaneous installation of two C-N bonds. The reaction process likely proceeds through the oxidative insertion of Pd to aryl iodide and subsequent vinyl C-H activation to from a pallada(II)cycle intermediate, which is bisaminated by di-t-butyldiaziridinone to give the indole product.
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Affiliation(s)
- Jing Li
- Institute of Natural and Synthetic Organic Chemistry, Changzhou University, Changzhou 213164, China
| | - Jinhua Chen
- Institute of Natural and Synthetic Organic Chemistry, Changzhou University, Changzhou 213164, China
| | - Luying Wang
- Institute of Natural and Synthetic Organic Chemistry, Changzhou University, Changzhou 213164, China
| | - Yian Shi
- Institute of Natural and Synthetic Organic Chemistry, Changzhou University, Changzhou 213164, China.,Department of Chemistry, Colorado State University, Fort Collins 80523, Colorado, United States
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