1
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Wang X, Li J, Du H, Liang W, Luo C, Wu Y, Liu B. Synthesis of 1,4-epoxy-2-aryltetrahydro-1-benzazepines via rhodium(III)-catalyzed C-H allylation/intramolecular 1,3-dipolar cycloaddition. Chem Commun (Camb) 2024; 60:2401-2404. [PMID: 38323599 DOI: 10.1039/d3cc05082c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Herein, we report a new synthetic route to 1,4-epoxy-2-aryltetrahydro-1-benzazepine derivatives with high efficiency, namely the Rh(III)-catalyzed C-H allylation of nitrones with allyl precursors, followed by subsequent intramolecular 1,3-dipolar cycloaddition, to deliver the title compounds. This reaction is regio- and stereo-selective, generating the cis-isomer with a broad substrate scope and good functional group tolerance.
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Affiliation(s)
- Xuan Wang
- Guangdong Provincial Hospital of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510006, P. R. China.
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan 528400, P. R. China
| | - Jianlong Li
- Guangdong Provincial Hospital of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510006, P. R. China.
- Guangzhou Key Laboratory of Chirality Research on Active Components of Traditional Chinese Medicine, Guangzhou 510006, P. R. China
| | - Haifang Du
- Guangdong Provincial Hospital of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510006, P. R. China.
- Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangzhou 510006, P. R. China
| | - Weihong Liang
- Guangdong Provincial Hospital of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510006, P. R. China.
- Guangzhou Key Laboratory of Chirality Research on Active Components of Traditional Chinese Medicine, Guangzhou 510006, P. R. China
| | - Cheng Luo
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan 528400, P. R. China
| | - Yunshan Wu
- Guangdong Provincial Hospital of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510006, P. R. China.
- Guangzhou Key Laboratory of Chirality Research on Active Components of Traditional Chinese Medicine, Guangzhou 510006, P. R. China
| | - Bo Liu
- Guangdong Provincial Hospital of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510006, P. R. China.
- Guangzhou Key Laboratory of Chirality Research on Active Components of Traditional Chinese Medicine, Guangzhou 510006, P. R. China
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, Guangzhou 510006, P. R. China
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2
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Pramanik S, Saha P, Ghosh P, Mukhopadhyay C. Substrate Switchable Pathway for Selective Construction of Bridged Dibenzo[b,f][1,5]diazocines and Bridged Spiromethanodibenzo[ b, e]azepines. ACS OMEGA 2023; 8:20579-20588. [PMID: 37323403 PMCID: PMC10268268 DOI: 10.1021/acsomega.3c01046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 05/17/2023] [Indexed: 06/17/2023]
Abstract
An operationally simple method for the synthesis of bridged dibenzo[b,f][1,5]diazocines and bridged spiromethanodibenzo[b,e]azepines exhibiting bridged eight-membered and seven-membered molecular architecture is reported. This unique approach is based on substrate selective mechanistic pathway, including an unprecendented aerial oxidation-driven mechanism for the synthesis of bridged spiromethanodibenzo[b,e]azepines. The reaction is highly atom economic, and in addition, it allows the construction of two rings and four bonds in a single operation under metal-free condition. The easy availability of β enaminone and ortho phathalaldehyde as starting materials and the simple operation make this approach suitable for the preparation of important dibenzo[b,f][1,5]diazocine and spiromethanodibenzo[b,e]azepine cores.
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Affiliation(s)
- Sayan Pramanik
- Department
of Chemistry, University of Calcutta, 92 APC Road, Kolkata 700009, India
| | - Pinaki Saha
- Department
of Chemistry, R. K. Mission Residential
College, Narendrapur, Kolkata 700103, India
| | - Prasanta Ghosh
- Department
of Chemistry, R. K. Mission Residential
College, Narendrapur, Kolkata 700103, India
| | - Chhanda Mukhopadhyay
- Department
of Chemistry, University of Calcutta, 92 APC Road, Kolkata 700009, India
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3
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Dorababu A. Update of Recently (2016–2020) Designed Azepine Analogs and Related Heterocyclic Compounds with Potent Pharmacological Activities. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2041677] [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]
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4
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Hu F, Li X, Ding Z, Wang L, Ge C, Xu L, Li SS. Divergent Synthesis of [3,4]-Fused 3-Alkenyl-Oxindoles via Propargyl Alcohol-Triggered C(sp3)–H Functionalization. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04931] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Fangzhi Hu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Xinyao Li
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Zhanshuai Ding
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Chunyan Ge
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Lubin Xu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Shuai-Shuai Li
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
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5
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Nikbakht A, Amiri K, Khosravi H, Zhou Y, Balalaie S, Breit B. Copper-Catalyzed Cycloisomerization of Unactivated Allene-Tethered O-Propargyl Oximes: A Domino Reaction Sequence toward the Synthesis of Hexahydropyrrolo[3,4- b]azepin-5(4 H)-ones. Org Lett 2021; 23:3343-3348. [PMID: 33843238 DOI: 10.1021/acs.orglett.1c00837] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel copper-catalyzed cycloisomerization of unactivated allene-tethered O-propargyl oximes has been developed for the synthesis of hexahydropyrrolo[3,4-b]azepin-5(4H)-ones. This one-pot domino reaction proceeds via a [2,3]-sigmatropic rearrangement, a [3 + 2] cycloaddition, and another [3,3]-sigmatropic rearrangement. The methodology offers a practical and straightforward route for the rapid assembly of both ring components of the fused bicyclic motifs from acyclic precursors by simultaneously forming four new bonds (a C═O, a C═N, and two C-C bonds) in a single step.
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Affiliation(s)
- Ali Nikbakht
- Institut fur Organische Chemie, Albert-Ludwigs-Universitat Freiburg Albertstrasse 21, 79104 Freiburg im Breisgau, Germany.,Peptide Chemistry Research Center, K. N. Toosi University of Technology, Tehran 15875-4416, Iran
| | - Kamran Amiri
- Institut fur Organische Chemie, Albert-Ludwigs-Universitat Freiburg Albertstrasse 21, 79104 Freiburg im Breisgau, Germany.,Peptide Chemistry Research Center, K. N. Toosi University of Technology, Tehran 15875-4416, Iran
| | - Hormoz Khosravi
- Institut fur Organische Chemie, Albert-Ludwigs-Universitat Freiburg Albertstrasse 21, 79104 Freiburg im Breisgau, Germany.,Peptide Chemistry Research Center, K. N. Toosi University of Technology, Tehran 15875-4416, Iran
| | - Yirong Zhou
- Institut fur Organische Chemie, Albert-Ludwigs-Universitat Freiburg Albertstrasse 21, 79104 Freiburg im Breisgau, Germany
| | - Saeed Balalaie
- Peptide Chemistry Research Center, K. N. Toosi University of Technology, Tehran 15875-4416, Iran.,Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah 6714415185, Iran
| | - Bernhard Breit
- Institut fur Organische Chemie, Albert-Ludwigs-Universitat Freiburg Albertstrasse 21, 79104 Freiburg im Breisgau, Germany
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6
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Karatas M, Chaikuad A, Berger B, Kubbutat MHG, Totzke F, Knapp S, Kunick C. 7-(2-Anilinopyrimidin-4-yl)-1-benzazepin-2-ones Designed by a "Cut and Glue" Strategy Are Dual Aurora A/VEGF-R Kinase Inhibitors. Molecules 2021; 26:molecules26061611. [PMID: 33799460 PMCID: PMC7998669 DOI: 10.3390/molecules26061611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/06/2021] [Accepted: 03/07/2021] [Indexed: 11/16/2022] Open
Abstract
Although overexpression and hyperactivity of protein kinases are causative for a wide range of human cancers, protein kinase inhibitors currently approved as cancer drugs address only a limited number of these enzymes. To identify new chemotypes addressing alternative protein kinases, the basic structure of a known PLK1/VEGF-R2 inhibitor class was formally dissected and reassembled. The resulting 7-(2-anilinopyrimidin-4-yl)-1-benzazepin-2-ones were synthesized and proved to be dual inhibitors of Aurora A kinase and VEGF receptor kinases. Crystal structures of two representatives of the new chemotype in complex with Aurora A showed the ligand orientation in the ATP binding pocket and provided the basis for rational structural modifications. Congeners with attached sulfamide substituents retained Aurora A inhibitory activity. In vitro screening of two members of the new kinase inhibitor family against the cancer cell line panel of the National Cancer Institute (NCI) showed antiproliferative activity in the single-digit micromolar concentration range in the majority of the cell lines.
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Affiliation(s)
- Mehmet Karatas
- Institut für Medizinische und Pharmazeutische Chemie, Technische Universität Braunschweig, Beethovenstraße 55, 38106 Braunschweig, Germany; (M.K.); (B.B.)
- Zentrum für Pharmaverfahrenstechnik (PVZ), Technische Universität Braunschweig, Franz-Liszt-Straße 35A, 38106 Braunschweig, Germany
| | - Apirat Chaikuad
- Structural Genomics Consortium, BMLS, Max-von-Laue-Straße 15, 60438 Frankfurt am Main, Germany; (A.C.); (S.K.)
- Institut für Pharmazeutische Chemie, Johann Wolfgang-Goethe-Universität, Max-von-Laue-Straße 9, 60438 Frankfurt am Main, Germany
| | - Bianca Berger
- Institut für Medizinische und Pharmazeutische Chemie, Technische Universität Braunschweig, Beethovenstraße 55, 38106 Braunschweig, Germany; (M.K.); (B.B.)
| | | | - Frank Totzke
- Reaction Biology Europe GmbH, 79108 Freiburg, Germany; (M.H.G.K.); (F.T.)
| | - Stefan Knapp
- Structural Genomics Consortium, BMLS, Max-von-Laue-Straße 15, 60438 Frankfurt am Main, Germany; (A.C.); (S.K.)
- Institut für Pharmazeutische Chemie, Johann Wolfgang-Goethe-Universität, Max-von-Laue-Straße 9, 60438 Frankfurt am Main, Germany
| | - Conrad Kunick
- Institut für Medizinische und Pharmazeutische Chemie, Technische Universität Braunschweig, Beethovenstraße 55, 38106 Braunschweig, Germany; (M.K.); (B.B.)
- Zentrum für Pharmaverfahrenstechnik (PVZ), Technische Universität Braunschweig, Franz-Liszt-Straße 35A, 38106 Braunschweig, Germany
- Correspondence: ; Tel.: +49-531-391-2754
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7
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Dong X, Xu LP, Yang Y, Liu Y, Li X, Liu Q, Zheng L, Wang F, Liu H. A palladium/Et 3N·HI-catalyzed highly selective 7- endo alkyl-Heck-type reaction of epoxides and a DFT study on the mechanism. Org Chem Front 2021. [DOI: 10.1039/d1qo00942g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A highly efficient 7-endo alkyl-Heck reaction was achieved via palladium catalyzed ring-opening of epoxides, providing a variety of 6-aryl-2,3,4,7-tetrahydro-1H-azepin-3-ols and 6-aryl-2,3,4,5-tetrahydrooxepin-3-ols.
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Affiliation(s)
- Xu Dong
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, China
| | - Li-Ping Xu
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, China
| | - Yi Yang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, China
| | - Yunxia Liu
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, China
| | - Xin Li
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, China
| | - Qing Liu
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, China
| | - Liang Zheng
- Comprehensive Law Enforcement Detachment of Zibo Development and Reform Commission, No.4 West Renmin Road, Zibo 255000, China
| | - Fagang Wang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, China
| | - Hui Liu
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, China
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8
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Yempala T, Babu T, Gibson D, Cassels BK. Dibenzofuran annulated 1-azepines: Synthesis and cytotoxicity. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1703001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Thirumal Yempala
- Department of Chemistry, Faculty of Sciences, Universidad de Chile, Santiago, Chile
- Institute of Drug Research, School of Pharmacy, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Tomer Babu
- Institute of Drug Research, School of Pharmacy, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Dan Gibson
- Institute of Drug Research, School of Pharmacy, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Bruce K. Cassels
- Department of Chemistry, Faculty of Sciences, Universidad de Chile, Santiago, Chile
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9
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Continuous high-pressure operation of a pharmaceutically relevant Krapcho dealkoxycarbonylation reaction. J Flow Chem 2019. [DOI: 10.1007/s41981-019-00031-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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Yépes AF, Bahsas A, Escobar P, Cobo J, Palma A, Garro Martinez JC, Enriz R. Synthesis, anti-parasitic activity and QSAR study of a new library of polysubstituted tetrahydronaphtho[1,2-b]azepines. Med Chem Res 2018. [DOI: 10.1007/s00044-018-2232-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Liu S, Qu J, Wang B. Substrate-controlled divergent synthesis of polycyclic indoloazepines and indolodiazepines via 1,5-hydride shift/7-cyclization cascades. Chem Commun (Camb) 2018; 54:7928-7931. [PMID: 29951657 DOI: 10.1039/c8cc03804j] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Novel and practical acid-catalyzed cyclization of 2-indolyl aryl carbinols via tandem dehydration/1,5-hydride shift/7-cyclization sequences has been developed. By appropriate variation of the substrate, diverse polycyclic-fused indoles were synthesized in good yield, thus demonstrating the high efficiency, transition-metal-free nature, and high step/atom economy of the synthesis strategy.
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Affiliation(s)
- Siyuan Liu
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian 116024, P. R. China.
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12
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Rehbein MC, Husmann S, Lechner C, Kunick C, Scholl S. Fast and calibration free determination of first order reaction kinetics in API synthesis using in-situ ATR-FTIR. Eur J Pharm Biopharm 2018; 126:95-100. [DOI: 10.1016/j.ejpb.2017.09.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 07/17/2017] [Accepted: 09/25/2017] [Indexed: 11/30/2022]
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13
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The Impact of Global Sensitivities and Design Measures in Model-Based Optimal Experimental Design. Processes (Basel) 2018. [DOI: 10.3390/pr6040027] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In the field of chemical engineering, mathematical models have been proven to be an indispensable tool for process analysis, process design, and condition monitoring. To gain the most benefit from model-based approaches, the implemented mathematical models have to be based on sound principles, and they need to be calibrated to the process under study with suitable model parameter estimates. Often, the model parameters identified by experimental data, however, pose severe uncertainties leading to incorrect or biased inferences. This applies in particular in the field of pharmaceutical manufacturing, where usually the measurement data are limited in quantity and quality when analyzing novel active pharmaceutical ingredients. Optimally designed experiments, in turn, aim to increase the quality of the gathered data in the most efficient way. Any improvement in data quality results in more precise parameter estimates and more reliable model candidates. The applied methods for parameter sensitivity analyses and design criteria are crucial for the effectiveness of the optimal experimental design. In this work, different design measures based on global parameter sensitivities are critically compared with state-of-the-art concepts that follow simplifying linearization principles. The efficient implementation of the proposed sensitivity measures is explicitly addressed to be applicable to complex chemical engineering problems of practical relevance. As a case study, the homogeneous synthesis of 3,4-dihydro-1H-1-benzazepine-2,5-dione, a scaffold for the preparation of various protein kinase inhibitors, is analyzed followed by a more complex model of biochemical reactions. In both studies, the model-based optimal experimental design benefits from global parameter sensitivities combined with proper design measures.
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14
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Li SS, Zhou L, Wang L, Zhao H, Yu L, Xiao J. Organocatalytic C(sp 3)-H Functionalization via Carbocation-Initiated Cascade [1,5]-Hydride Transfer/Cyclization: Synthesis of Dihydrodibenzo[b,e]azepines. Org Lett 2017; 20:138-141. [PMID: 29239184 DOI: 10.1021/acs.orglett.7b03492] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Carbocation-initiated cascade [1,5]-hydride transfer/cyclization and dimerization reactions were developed to synthesize dihydrodibenzo[b,e]azepine and octahydrodipyrroloquinoline derivatives in high yields. These redox-neutral C(sp3)-H functionalization-involving cascade reactions feature transition-metal-free, high atom- and step-economy, and environmental friendliness with water as the sole byproduct.
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Affiliation(s)
- Shuai-Shuai Li
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University , Qingdao 266109, China
| | - Lan Zhou
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University , Qingdao 266109, China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University , Qingdao 266109, China
| | - Huaili Zhao
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University , Qingdao 266109, China
| | - Liping Yu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University , Qingdao 266109, China
| | - Jian Xiao
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University , Qingdao 266109, China
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15
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Suh CW, Kwon SJ, Kim DY. Synthesis of Ring-Fused 1-Benzazepines via [1,5]-Hydride Shift/7-Endo Cyclization Sequences. Org Lett 2017; 19:1334-1337. [DOI: 10.1021/acs.orglett.7b00184] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Chang Won Suh
- Department of Chemistry, Soonchunhyang University, Asan, Chungnam 31538, Korea
| | - Su Jin Kwon
- Department of Chemistry, Soonchunhyang University, Asan, Chungnam 31538, Korea
| | - Dae Young Kim
- Department of Chemistry, Soonchunhyang University, Asan, Chungnam 31538, Korea
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16
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Mandal S, Mandal S, Ghosh SK, Ghosh A, Saha R, Banerjee S, Saha B. Review of the aldol reaction. SYNTHETIC COMMUN 2016. [DOI: 10.1080/00397911.2016.1206938] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Swagata Mandal
- Homogeneous Catalysis Laboratory, Department of Chemistry, University of Burdwan, Golapbag, Burdwan, India
| | - Sangita Mandal
- Homogeneous Catalysis Laboratory, Department of Chemistry, University of Burdwan, Golapbag, Burdwan, India
| | - Sumanta K. Ghosh
- Homogeneous Catalysis Laboratory, Department of Chemistry, University of Burdwan, Golapbag, Burdwan, India
| | - Aniruddha Ghosh
- Homogeneous Catalysis Laboratory, Department of Chemistry, University of Burdwan, Golapbag, Burdwan, India
| | - Rumpa Saha
- Department of Chemistry, TDB College Raniganj, Raniganj, India
| | | | - Bidyut Saha
- Homogeneous Catalysis Laboratory, Department of Chemistry, University of Burdwan, Golapbag, Burdwan, India
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17
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Blanco MC, Escobar P, Leal SM, Bahsas A, Cobo J, Nogueras M, Palma A. Synthesis of novel polysubstituted (2SR,4RS)-2-heteroaryltetrahydro-1,4-epoxy-1-benzazepines and cis-2-heteroaryl-4-hydroxytetrahydro-1H-1-benzazepines as antiparasitic agents. Eur J Med Chem 2014; 86:291-309. [PMID: 25173828 DOI: 10.1016/j.ejmech.2014.08.055] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 08/04/2014] [Accepted: 08/15/2014] [Indexed: 10/24/2022]
Abstract
New series of polysubstituted (2SR,4RS)-2-heteroaryltetrahydro-1,4-epoxy-1-benzazepines and cis-2-heteroaryl-4-hydroxytetrahydro-1H-1-benzazepines were designed and synthesized in moderate to high yields using a three-step procedure from ortho-allylanilines. Their antiparasitic activity was evaluated against the extracellular and intracellular forms of Trypanosoma cruzi and Leishmania (Leishmania) infantum parasites. Their cytotoxicity was also determined on Vero and THP-1 mammalian cells. Many of the tested compounds inhibited significantly the growth of extracellular forms of T. cruzi and L. (L.) infantum without showing cytotoxicity on Vero and HTP-1 cells. Only compounds 10h and 14f demonstrated good activity against amastigotes of T. cruzi, but none was able to inhibit the growth of L. (L.) infantum amastigotes.
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Affiliation(s)
- María C Blanco
- Laboratorio de Síntesis Orgánica, Escuela de Química, Universidad Industrial de Santander, A.A. 678, Bucaramanga, Santander, Colombia
| | - Patricia Escobar
- Centro de Investigación de Enfermedades Tropicales, Departamento de Ciencias Básicas, Escuela de Medicina, Universidad Industrial de Santander, A.A. 678, Bucaramanga, Santander, Colombia
| | - Sandra M Leal
- Centro de Investigación de Enfermedades Tropicales, Departamento de Ciencias Básicas, Escuela de Medicina, Universidad Industrial de Santander, A.A. 678, Bucaramanga, Santander, Colombia
| | - Alí Bahsas
- Laboratorio de RMN, Grupo de Productos Naturales, Departamento de Química, Universidad de los Andes, Mérida 5101, Venezuela
| | - Justo Cobo
- Inorganic and Organic Department, University of Jaén, Campus Las Lagunillas s/n, 23071 Jaén, Spain
| | - Manuel Nogueras
- Inorganic and Organic Department, University of Jaén, Campus Las Lagunillas s/n, 23071 Jaén, Spain
| | - Alirio Palma
- Laboratorio de Síntesis Orgánica, Escuela de Química, Universidad Industrial de Santander, A.A. 678, Bucaramanga, Santander, Colombia.
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18
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Schultz EE, Lindsay VNG, Sarpong R. Expedient Synthesis of Fused Azepine Derivatives Using a Sequential Rhodium(II)-Catalyzed Cyclopropanation/1-Aza-Cope Rearrangement of Dienyltriazoles. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201405356] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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19
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Schultz EE, Lindsay VNG, Sarpong R. Expedient synthesis of fused azepine derivatives using a sequential rhodium(II)-catalyzed cyclopropanation/1-aza-Cope rearrangement of dienyltriazoles. Angew Chem Int Ed Engl 2014; 53:9904-8. [PMID: 25044869 DOI: 10.1002/anie.201405356] [Citation(s) in RCA: 116] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Indexed: 11/11/2022]
Abstract
A general method for the formation of fused dihydroazepine derivatives from 1-sulfonyl-1,2,3-triazoles bearing a tethered diene is reported. The process involves an intramolecular cyclopropanation of an α-imino rhodium(II) carbenoid, leading to a transient 1-imino-2-vinylcyclopropane intermediate which rapidly undergoes a 1-aza-Cope rearrangement to generate fused dihydroazepine derivatives in moderate to excellent yields. The reaction proceeds with similar efficiency on gram scale. The use of catalyst-free conditions leads to the formation of a novel [4.4.0] bicyclic heterocycle.
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Affiliation(s)
- Erica E Schultz
- Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720 (USA)
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Luo L, Meng L, Sun Q, Ge Z, Li R. Novel synthesis of thiazolo/thienoazepine-5,8-diones from dihalo cyclic 1,3-diketones and mercaptonitrile salts. RSC Adv 2014. [DOI: 10.1039/c3ra46606j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An efficient approach to thiazolo[4,5-b]azepine-5,8-diones and thieno[3,2-b]azepine-5,8-diones has been developed via a domino synthesis of multifunctionalized thiazoles/thiophenes and further intramolecular cyclization.
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Affiliation(s)
- Laichun Luo
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191, China
| | - Lanlan Meng
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191, China
| | - Qi Sun
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191, China
| | - Zemei Ge
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191, China
| | - Runtao Li
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191, China
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Determann R, Dreher J, Baumann K, Preu L, Jones PG, Totzke F, Schächtele C, Kubbutat MHG, Kunick C. 2-Anilino-4-(benzimidazol-2-yl)pyrimidines--a multikinase inhibitor scaffold with antiproliferative activity toward cancer cell lines. Eur J Med Chem 2012; 53:254-63. [PMID: 22560627 DOI: 10.1016/j.ejmech.2012.04.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Revised: 04/05/2012] [Accepted: 04/06/2012] [Indexed: 12/31/2022]
Abstract
2-Anilino-4-(benzimidazol-2-yl)-pyrimidines, synthesized by reaction of a readily available benzimidazole-substituted enaminone with suitable arylguanidines, were shown to inhibit four cancer-related protein kinases (Aurora B, PLK1, FAK, and VEGF-R2). The most potent derivative exhibited antiproliferative activity for several cancer cell lines of the NCI in vitro cell line panel in submicromolar concentrations. Both the anilinopyrimidine structure and the substitution pattern at the aniline ring appear to be important for the protein kinase inhibitory activity.
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Affiliation(s)
- Renate Determann
- Technische Universität Braunschweig, Institut für Medizinische und Pharmazeutische Chemie, Beethovenstraße 55, D-38106 Braunschweig, Germany
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Gómez SL, Palma A, Cobo J, Glidewell C. (2R*,4S*)-2-(pyridin-3-yl)-2,3,4,5-tetrahydro-1H-1-benzazepin-4-ol: a three-dimensional framework built from O-H···N, C-H···O and C-H···π(arene) hydrogen bonds. Acta Crystallogr C 2011; 67:o157-60. [PMID: 21540540 DOI: 10.1107/s010827011101016x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Accepted: 03/17/2011] [Indexed: 11/10/2022] Open
Abstract
The title compound, C(15)H(16)N(2)O, crystallizes in the space group P2(1)2(1)2(1) with Z' = 1. The seven-membered ring adopts a chair-type conformation with the hydroxy and pyridyl substituents in equatorial sites. Molecules are linked into a three-dimensional framework structure by a combination of O-H···N, C-H···O and C-H···π(arene) hydrogen bonds, but N-H···O and N-H···π(arene) interactions are absent from the structure. Comparisons are made with some related compounds.
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Affiliation(s)
- Sandra L Gómez
- Laboratorio de Síntesis Orgánica, Escuela de Química, Universidad Industrial de Santander, AA 678 Bucaramanga, Colombia
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Acosta LM, Palma A, Bahsas A. Rational use of substituted N-allyl and N,N-diallylanilines in the stereoselective synthesis of novel 2-alkenyltetrahydro-1-benzazepines. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.08.067] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Synthesis, structural elucidation and in vitro antiparasitic activity against Trypanosoma cruzi and Leishmania chagasi parasites of novel tetrahydro-1-benzazepine derivatives. Bioorg Med Chem 2010; 18:4721-39. [DOI: 10.1016/j.bmc.2010.05.018] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2010] [Revised: 05/03/2010] [Accepted: 05/05/2010] [Indexed: 11/20/2022]
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Egert-Schmidt AM, Dreher J, Dunkel U, Kohfeld S, Preu L, Weber H, Ehlert JE, Mutschler B, Totzke F, Schächtele C, Kubbutat MHG, Baumann K, Kunick C. Identification of 2-anilino-9-methoxy-5,7-dihydro-6H-pyrimido[5,4-d][1]benzazepin-6-ones as dual PLK1/VEGF-R2 kinase inhibitor chemotypes by structure-based lead generation. J Med Chem 2010; 53:2433-42. [PMID: 20170163 DOI: 10.1021/jm901388c] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
To develop multikinase inhibitors with dual PLK1/VEGF-R2 inhibitory activity, the d-annulated 1-benzazepin-2-one scaffold present in the paullone family of kinase inhibitors was investigated as a general structure template suitable for anchoring annulated heterocycles at the hinge region of the ATP binding site. For this purpose, the indole substructure of the paullones was replaced by other nitrogen containing heteroaromatics. The designed scaffolds were synthesized and tested on the indicated kinases. The 2-anilino-5,7-dihydro-6H-pyrimido[5,4-d][1]benzazepin-6-ones were found to be VEGF-R2 inhibitors with selectivity against the insulin receptor kinase. The attachment of a methoxy group to the 9-position of the scaffold led to additional PLK1 inhibitory activity, which was explained by an alternative binding mode of the 9-methoxy derivatives. Selected members of the compound class inhibited the VEGF-R2 autophosphorylation in human umbilical vein endothelial cells, the sprouting of human umbilical vein endothelial cell speroids, and the proliferation of diverse cancer cell lines.
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Affiliation(s)
- Anne-Marie Egert-Schmidt
- Technische Universitat Braunschweig, Institut für Pharmazeutische Chemie, Beethovenstrasse 55, 38106 Braunschweig, Germany
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Kohfeld S, Jones PG, Totzke F, Schächtele C, Kubbutat MHG, Kunick C. 1-Aryl-4,6-dihydropyrazolo[4,3-d][1]benzazepin-5(1H)-ones: a new class of antiproliferative agents with selectivity for human leukemia and breast cancer cell lines. Eur J Med Chem 2007; 42:1317-24. [PMID: 17448574 DOI: 10.1016/j.ejmech.2007.02.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2006] [Revised: 02/01/2007] [Accepted: 02/15/2007] [Indexed: 10/23/2022]
Abstract
The synthesis of 1-aryl-4,6-dihydropyrazolo[4,3-d][1]benzazepin-5(1H)-ones by cyclization of 4-[(dimethylamino)methylidene]-3,4-dihydro-1H-[1]benzazepine-2,5-dione with arylhydrazines is reported. When tested on a panel of human cancer cell lines, the title compounds showed antiproliferative activity and a characteristic selectivity pattern of growth inhibition. Although structurally akin to established kinase inhibitors, the new compounds did not exhibit noteworthy inhibitory activity when tested on an array of cancer-related kinases.
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Affiliation(s)
- Simone Kohfeld
- Technische Universität Braunschweig, Institut für Pharmazeutische Chemie, Beethovenstrasse 55, D-38106 Braunschweig, Germany
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