1
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Dou PH, Yuan SP, Chen Y, Zhao JQ, Wang ZH, You Y, Zhang YP, Zhou MQ, Yuan WC. Dearomatization of 3-Nitroindoles Enabled Using Palladium-Catalyzed Decarboxylative [4 + 2] Cycloaddition of 2-Alkylidenetrimethylene Carbonates. J Org Chem 2022; 87:6025-6037. [PMID: 35436114 DOI: 10.1021/acs.joc.2c00276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A dearomatization process of 3-nitroindoles enabled using palladium-catalyzed decarboxylative [4 + 2] cycloaddition of either 2-alkylidenetrimethylene carbonates or 2-(hydroxymethyl)-3-arylallyl carbonates has been developed, affording a wide range of indoline-fused tetrahydropyrans in good yields with excellent diastereoselectivities. This reaction features a wide substrate scope and mild conditions and represents the first example of the application of π-allyl palladium 1,4-[O,C]-dipole species for the dearomative cycloaddition of electron-deficient heteroarenes.
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Affiliation(s)
- Pei-Hao Dou
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China.,Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shu-Pei Yuan
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China.,Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yan Chen
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China.,Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jian-Qiang Zhao
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Zhen-Hua Wang
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Yong You
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Yan-Ping Zhang
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Ming-Qiang Zhou
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Wei-Cheng Yuan
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China.,Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
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2
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Wang P, Ni J, An Y, Chen X, Zhang W, Zhang Y, Ma G. Heterogeneously Organocatalytic, Enantioselective Friedel-Crafts Alkylation of Indole with 3,3,3-Trifluoropyruvate. HETEROCYCLES 2022. [DOI: 10.3987/com-21-14566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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3
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Khan I, Ibrar A, Zaib S. Alkynoates as Versatile and Powerful Chemical Tools for the Rapid Assembly of Diverse Heterocycles under Transition-Metal Catalysis: Recent Developments and Challenges. Top Curr Chem (Cham) 2021; 379:3. [PMID: 33398642 DOI: 10.1007/s41061-020-00316-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 11/16/2020] [Indexed: 12/15/2022]
Abstract
Heterocycles, heteroaromatics and spirocyclic entities are ubiquitous components of a wide plethora of synthetic drugs, biologically active natural products, marketed pharmaceuticals and agrochemical targets. Recognizing their high proportion in drugs and rich pharmacological potential, these invaluable structural motifs have garnered significant interest, thus enabling the development of efficient catalytic methodologies providing access to architecturally complex and diverse molecules with high atom-economy and low cost. These chemical processes not only allow the formation of diverse heterocycles but also utilize a range of flexible and easily accessible building units in a single operation to discover diversity-oriented synthetic approaches. Alkynoates are significantly important, diverse and powerful building blocks in organic chemistry due to their unique and inherent properties such as the electronic bias on carbon-carbon triple bonds posed by electron-withdrawing groups or the metallic coordination site provided by carbonyl groups. The present review highlights the comprehensive picture of the utility of alkynoates (2007-2019) for the synthesis of various heterocycles (> 50 types) using transition-metal catalysts (Ru, Rh, Pd, Ir, Ag, Au, Pt, Cu, Mn, Fe) in various forms. The valuable function of versatile alkynoates (bearing multifunctional groups) as simple and useful starting materials is explored, thus cyclizing with an array of coupling partners to deliver a broad range of oxygen-, nitrogen-, sulfur-containing heterocycles alongside fused-, and spiro-heterocyclic compounds. In addition, these examples will also focus the scope and reaction limitations, as well as mechanistic investigations into the synthesis of these heterocycles. The biological significance will also be discussed, citing relevant examples of drug molecules highlighting each class of heterocycles. This review summarizes the recent developments in the synthetic methods for the synthesis of various heterocycles using alkynoates as readily available starting materials under transition-metal catalysis.
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Affiliation(s)
- Imtiaz Khan
- Department of Chemistry, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester, M1 7DN, UK.
| | - Aliya Ibrar
- Department of Chemistry, Faculty of Natural Sciences, The University of Haripur, Haripur, KPK-22620, Pakistan
| | - Sumera Zaib
- Department of Biochemistry, Faculty of Life Sciences, University of Central Punjab, Lahore, 54590, Pakistan
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4
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A Direct and an Efficient Regioselective Synthesis of 1,2-Benzothiazine 1,1-dioxides, β-Carbolinones, Indolo[2,3- c]pyran-1-ones, Indolo[3,2- c]pyran-1-ones, Thieno[2,3- c]pyran-7-ones and Pyrano[3',4':4,5]imidazo[1,2- a]pyridin-1-ones via Tandem Stille/Heterocyclization Reaction. Molecules 2020; 25:molecules25215137. [PMID: 33158260 PMCID: PMC7663652 DOI: 10.3390/molecules25215137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 10/28/2020] [Accepted: 10/30/2020] [Indexed: 11/16/2022] Open
Abstract
A general regioselective one-pot synthesis of 1,2-benzothiazine 1,1-dioxides from 2-iodo benzenesulfonamide moieties and allenylstannanes is described using a domino Stille-like/Azacyclization reaction. The conditions developed also opened a novel access to β-carbolinones, indolopyranones, thienopyranones and pyrano-imidazopyridines.
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5
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Cheng J, Sun J, Yan J, Yang S, Zheng P, Jin Z, Chi YR. Carbene-Catalyzed Indole 3-Methyl C(sp3)–H Bond Functionalization. J Org Chem 2017; 82:13342-13347. [DOI: 10.1021/acs.joc.7b02436] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jian Cheng
- Laboratory
Breeding Base of Green Pesticide and Agricultural Bioengineering,
Key Laboratory of Green Pesticide and Agricultural Bioengineering,
Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Jun Sun
- Laboratory
Breeding Base of Green Pesticide and Agricultural Bioengineering,
Key Laboratory of Green Pesticide and Agricultural Bioengineering,
Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Jiekuan Yan
- Laboratory
Breeding Base of Green Pesticide and Agricultural Bioengineering,
Key Laboratory of Green Pesticide and Agricultural Bioengineering,
Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Song Yang
- Laboratory
Breeding Base of Green Pesticide and Agricultural Bioengineering,
Key Laboratory of Green Pesticide and Agricultural Bioengineering,
Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Pengcheng Zheng
- Laboratory
Breeding Base of Green Pesticide and Agricultural Bioengineering,
Key Laboratory of Green Pesticide and Agricultural Bioengineering,
Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Zhichao Jin
- Laboratory
Breeding Base of Green Pesticide and Agricultural Bioengineering,
Key Laboratory of Green Pesticide and Agricultural Bioengineering,
Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Yonggui Robin Chi
- Laboratory
Breeding Base of Green Pesticide and Agricultural Bioengineering,
Key Laboratory of Green Pesticide and Agricultural Bioengineering,
Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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6
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Chen J, Han X, Lu X. Enantioselective Synthesis of Tetrahydropyrano[3,4-b
]indoles: Palladium(II)-Catalyzed Aminopalladation/1,4-Addition Sequence. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708900] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Junjie Chen
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Xiuling Han
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Xiyan Lu
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
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7
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Chen J, Han X, Lu X. Enantioselective Synthesis of Tetrahydropyrano[3,4-b
]indoles: Palladium(II)-Catalyzed Aminopalladation/1,4-Addition Sequence. Angew Chem Int Ed Engl 2017; 56:14698-14701. [DOI: 10.1002/anie.201708900] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Junjie Chen
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Xiuling Han
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Xiyan Lu
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
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8
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Wang P, Zhao JZ, Li HF, Liang XM, Zhang YL, Da CS. Acid-catalyzed highly diastereoselective and effective synthesis of 1,3-disubstituted tetrahydropyrano[3,4- b ]indoles. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2016.11.110] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Kumar KS, Meesa SR, Rajesham B, Bhasker B, Ashfaq MA, Khan AA, Rao SS, Pal M. AlCl3-mediated heteroarylation-cyclization strategy: one-pot synthesis of fused quinoxalines containing the central core of Lamellarin D. RSC Adv 2016. [DOI: 10.1039/c6ra07507j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Pyrano[3,4-b]indole fused quinoxalines were synthesized via an AlCl3-mediated heteroarylation-cyclization method as potential anticancer agents.
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Affiliation(s)
- K. Shiva Kumar
- Department of Chemistry
- Osmania University
- Hyderabad-500 007
- India
| | | | | | | | - Mohd Ashraf Ashfaq
- Central Laboratory for Stem Cell Research and Translational Medicine
- CLRD Deccan Colleges of Medical Sciences
- Hyderabad-500 058
- India
| | - Aleem Ahmed Khan
- Central Laboratory for Stem Cell Research and Translational Medicine
- CLRD Deccan Colleges of Medical Sciences
- Hyderabad-500 058
- India
| | | | - Manojit Pal
- Dr Reddy's Institute of Life Sciences
- Hyderabad Central University
- Hyderabad-500 046
- India
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10
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Çıkla-Süzgün P, Kaushik-Basu N, Basu A, Arora P, Talele TT, Durmaz I, Çetin-Atalay R, Küçükgüzel Ş. Anti-cancer and anti-hepatitis C virus NS5B polymerase activity of etodolac 1,2,4-triazoles. J Enzyme Inhib Med Chem 2015; 30:778-85. [DOI: 10.3109/14756366.2014.971780] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Affiliation(s)
- Pelin Çıkla-Süzgün
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Marmara University, İstanbul, Turkey,
| | - Neerja Kaushik-Basu
- Department of Biochemistry and Molecular Biology, New Jersey Medical School, Rutgers, The State University of New Jersey, New Jersey, NJ, USA,
| | - Amartya Basu
- Department of Biochemistry and Molecular Biology, New Jersey Medical School, Rutgers, The State University of New Jersey, New Jersey, NJ, USA,
| | - Payal Arora
- Department of Biochemistry and Molecular Biology, New Jersey Medical School, Rutgers, The State University of New Jersey, New Jersey, NJ, USA,
| | - Tanaji T. Talele
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY, USA, and
| | - Irem Durmaz
- Department of Molecular Biology and Genetics, Bilkent University, Ankara, Turkey
| | - Rengül Çetin-Atalay
- Department of Molecular Biology and Genetics, Bilkent University, Ankara, Turkey
| | - Ş.Güniz Küçükgüzel
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Marmara University, İstanbul, Turkey,
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11
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Harikishore A, Li E, Lee JJ, Cho NJ, Yoon HS. Combination of pharmacophore hypothesis and molecular docking to identify novel inhibitors of HCV NS5B polymerase. Mol Divers 2015; 19:529-39. [PMID: 25862642 DOI: 10.1007/s11030-015-9591-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2014] [Accepted: 03/25/2015] [Indexed: 01/03/2023]
Abstract
Hepatitis C virus (HCV) infection or HCV-related liver diseases are now shown to cause more than 350,000 deaths every year. Adaptability of HCV genome to vary its composition and the existence of multiple strains makes it more difficult to combat the emergence of drug-resistant HCV infections. Among the HCV polyprotein which has both the structural and non-structural regions, the non-structural protein NS5B RNA-dependent RNA polymerase (RdRP) mainly mediates the catalytic role of RNA replication in conjunction with its viral protein machinery as well as host chaperone proteins. Lack of such RNA-dependent RNA polymerase enzyme in host had made it an attractive and hotly pursued target for drug discovery efforts. Recent drug discovery efforts targeting HCV RdRP have seen success with FDA approval for sofosbuvir as a direct-acting antiviral against HCV infection. However, variations in drug-binding sites induce drug resistance, and therefore targeting allosteric sites could delay the emergence of drug resistance. In this study, we focussed on allosteric thumb site II of the non-structural protein NS5B RNA-dependent RNA polymerase and developed a five-feature pharmacophore hypothesis/model which estimated the experimental activity with a strong correlation of 0.971 & 0.944 for training and test sets, respectively. Further, the Güner-Henry score of 0.6 suggests that the model was able to discern the active and inactive compounds and enrich the true positives during a database search. In this study, database search and molecular docking results supported by experimental HCV viral replication inhibition assays suggested ligands with best fitness to the pharmacophore model dock to the key residues involved in thumbs site II, which inhibited the HCV 1b viral replication in sub-micro-molar range.
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Affiliation(s)
- Amaravadhi Harikishore
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551, Singapore,
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12
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Gu DW, Guo XX. Copper-catalyzed annulation of heteroaromatic β-halo-α,β-unsaturated carboxylic acids with alkynes for the synthesis of indolo[2,3-c]pyrane-1-ones and thieno[2,3-c]pyrane-7-ones. Org Biomol Chem 2014; 12:6114-20. [DOI: 10.1039/c4ob00996g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Gharpure SJ, Prasath V. Stereoselective synthesis of C-fused pyranoindoles, pyranobenzofurans and pyranobenzothiophene scaffolds using oxa-Pictet–Spengler type reaction of vinylogous carbonates. Org Biomol Chem 2014; 12:7397-409. [DOI: 10.1039/c4ob01387e] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
C-fused pyranoheterocycles can be assembled in a highly diastereoselective manner using an intramolecular oxa-Pictet–Spengler type reaction of vinylogous carbonates.
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Affiliation(s)
- Santosh J. Gharpure
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai – 400076, India
| | - V. Prasath
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai – 400076, India
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14
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Skladchikov DA, Suponitskii KY, Gataullin RR. Synthesis, structure, and heck cyclization of the syn- and anti-atropisomers of N-acyl-N-(4-methyl-3,6-dihydro-2H-pyran-3-yl)-2-iodo-4,6-dimethylaniline. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2013. [DOI: 10.1134/s107042801310014x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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Lazerwith SE, Lew W, Zhang J, Morganelli P, Liu Q, Canales E, Clarke MO, Doerffler E, Byun D, Mertzman M, Ye H, Chong L, Xu L, Appleby T, Chen X, Fenaux M, Hashash A, Leavitt SA, Mabery E, Matles M, Mwangi JW, Tian Y, Lee YJ, Zhang J, Zhu C, Murray BP, Watkins WJ. Discovery of GS-9669, a Thumb Site II Non-Nucleoside Inhibitor of NS5B for the Treatment of Genotype 1 Chronic Hepatitis C Infection. J Med Chem 2013; 57:1893-901. [DOI: 10.1021/jm401420j] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Scott E. Lazerwith
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Willard Lew
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Jennifer Zhang
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Philip Morganelli
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Qi Liu
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Eda Canales
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Michael O. Clarke
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Edward Doerffler
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Daniel Byun
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Michael Mertzman
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Hong Ye
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Lee Chong
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Lianhong Xu
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Todd Appleby
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Xiaowu Chen
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Martijn Fenaux
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Ahmad Hashash
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Stephanie A. Leavitt
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Eric Mabery
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Mike Matles
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Judy W. Mwangi
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Yang Tian
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Yu-Jen Lee
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Jingyu Zhang
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Christine Zhu
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Bernard P. Murray
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - William J. Watkins
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
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16
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Suresh RR, Swamy KCK. Palladium-Catalyzed Annulation of Allenes with Indole-2-carboxylic Acid Derivatives: Synthesis of Indolo[2,3-c]pyrane-1-ones via Ar–I Reactivity or C–H Functionalization. J Org Chem 2012; 77:6959-69. [DOI: 10.1021/jo301149s] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- R. Rama Suresh
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, A. P., India
| | - K. C. Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, A. P., India
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17
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Sofia MJ, Chang W, Furman PA, Mosley RT, Ross BS. Nucleoside, nucleotide, and non-nucleoside inhibitors of hepatitis C virus NS5B RNA-dependent RNA-polymerase. J Med Chem 2012; 55:2481-531. [PMID: 22185586 DOI: 10.1021/jm201384j] [Citation(s) in RCA: 217] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Michael J Sofia
- Pharmasset, Inc., 303A College Road East, Princeton, New Jersey 08540, United States.
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18
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Inack Ngi S, Guilloteau V, Abarbri M, Thibonnet J. Regioselective Copper-Mediated Synthesis of Thieno[2,3-c]pyrane-7-one, Indolo[2,3-c]pyrane-1-one, and Indolo[3,2-c]pyrane-1-one. J Org Chem 2011; 76:8347-54. [DOI: 10.1021/jo201528u] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Samuel Inack Ngi
- Laboratoire de Physicochimie des Matériaux et des Biomolécules, EA 4244, Faculté des Sciences et Techniques de Tours, Parc de Grandmont, 37200 Tours, France
| | - Vincent Guilloteau
- Laboratoire de Physicochimie des Matériaux et des Biomolécules, EA 4244, Faculté des Sciences et Techniques de Tours, Parc de Grandmont, 37200 Tours, France
| | - Mohamed Abarbri
- Laboratoire de Physicochimie des Matériaux et des Biomolécules, EA 4244, Faculté des Sciences et Techniques de Tours, Parc de Grandmont, 37200 Tours, France
| | - Jérôme Thibonnet
- Laboratoire de Physicochimie des Matériaux et des Biomolécules, EA 4244, Faculté des Sciences et Techniques de Tours, Parc de Grandmont, 37200 Tours, France
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19
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Medeiros MR, Schaus SE, Porco JA. A cycloisomerization/Friedel-Crafts alkylation strategy for the synthesis of pyrano[3,4-b]indoles. Org Lett 2011; 13:4012-5. [PMID: 21740020 PMCID: PMC3146574 DOI: 10.1021/ol201532k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis of pyrano[3,4-b]indoles is described. The reaction sequence involves Sonogashira coupling of dihydropyran propargyl ether scaffolds with iodoanilines to afford intermediate indoles. Lewis acid-catalyzed ionization of the dihydropyrans, followed by intramolecular C3 alkylation of the indole, provides the title compounds.
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Affiliation(s)
- Matthew R. Medeiros
- Chemistry Department, Center for Chemical Methodology and Library Development, Boston University, 590 Commonwealth Ave., Boston, Massachusetts, 02215, USA
| | - Scott E. Schaus
- Chemistry Department, Center for Chemical Methodology and Library Development, Boston University, 590 Commonwealth Ave., Boston, Massachusetts, 02215, USA
| | - John A. Porco
- Chemistry Department, Center for Chemical Methodology and Library Development, Boston University, 590 Commonwealth Ave., Boston, Massachusetts, 02215, USA
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Larghi EL, Kaufman TS. Synthesis of Oxacycles Employing the Oxa‐Pictet–Spengler Reaction: Recent Developments and New Prospects. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100271] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Enrique L. Larghi
- Institute of Chemistry of Rosario (IQUIR, CONICET‐UNR)and Department of Organic Chemistry, School of Pharmaceuticaland Biochemical Sciences, National University of Rosario, Suipacha 531 (S2002LRK) Rosario, Argentina, Fax: +54‐341‐4370477, ext. 35
| | - Teodoro S. Kaufman
- Institute of Chemistry of Rosario (IQUIR, CONICET‐UNR)and Department of Organic Chemistry, School of Pharmaceuticaland Biochemical Sciences, National University of Rosario, Suipacha 531 (S2002LRK) Rosario, Argentina, Fax: +54‐341‐4370477, ext. 35
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Jackson RW, LaPorte MG, Herbertz T, Draper TL, Gaboury JA, Rippin SR, Patel R, Chunduru SK, Benetatos CA, Young DC, Burns CJ, Condon SM. The discovery and structure–activity relationships of pyrano[3,4-b]indole-based inhibitors of hepatitis C virus NS5B polymerase. Bioorg Med Chem Lett 2011; 21:3227-31. [DOI: 10.1016/j.bmcl.2011.04.052] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2011] [Revised: 04/11/2011] [Accepted: 04/12/2011] [Indexed: 10/21/2022]
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