201
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Galenko AV, Khlebnikov AF, Novikov MS, Avdontceva MS. Synthesis of 3-(1,2-dioxoethyl)- and 2,3-dicarbonyl-containing pyrroles. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.02.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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202
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Qin X, Sun D, You Q, Cheng Y, Lan J, You J. Rh(III)-Catalyzed Decarboxylative ortho-Heteroarylation of Aromatic Carboxylic Acids by Using the Carboxylic Acid as a Traceless Directing Group. Org Lett 2015; 17:1762-5. [PMID: 25799375 DOI: 10.1021/acs.orglett.5b00532] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Xurong Qin
- Key
Laboratory of Green Chemistry and Technology of Ministry of Education,
College of Chemistry, and State Key Laboratory of Biotherapy, West
China Medical School, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
- College
of Pharmaceutical Science, Southwest University, 2 Tiansheng Road, Chongqing 400716, China
| | - Denan Sun
- Key
Laboratory of Green Chemistry and Technology of Ministry of Education,
College of Chemistry, and State Key Laboratory of Biotherapy, West
China Medical School, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Qiulin You
- Key
Laboratory of Green Chemistry and Technology of Ministry of Education,
College of Chemistry, and State Key Laboratory of Biotherapy, West
China Medical School, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Yangyang Cheng
- Key
Laboratory of Green Chemistry and Technology of Ministry of Education,
College of Chemistry, and State Key Laboratory of Biotherapy, West
China Medical School, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Jingbo Lan
- Key
Laboratory of Green Chemistry and Technology of Ministry of Education,
College of Chemistry, and State Key Laboratory of Biotherapy, West
China Medical School, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Jingsong You
- Key
Laboratory of Green Chemistry and Technology of Ministry of Education,
College of Chemistry, and State Key Laboratory of Biotherapy, West
China Medical School, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
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203
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Microwave-assisted facile synthesis of trisubstituted pyrrole derivatives. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-1966-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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204
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Huang Z, Yang YD, Tokunaga E, Shibata N. Copper-Catalyzed Regioselective Trifluoromethylthiolation of Pyrroles by Trifluoromethanesulfonyl Hypervalent Iodonium Ylide. Org Lett 2015; 17:1094-7. [DOI: 10.1021/ol503616y] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Zhongyan Huang
- Department
of Nanopharmaceutical
Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya466-8555, Japan
| | - Yu-Dong Yang
- Department
of Nanopharmaceutical
Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya466-8555, Japan
| | - Etsuko Tokunaga
- Department
of Nanopharmaceutical
Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya466-8555, Japan
| | - Norio Shibata
- Department
of Nanopharmaceutical
Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya466-8555, Japan
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205
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Goyal S, Patel JK, Gangar M, Kumar K, Nair VA. Zirconocene dichloride catalysed one-pot synthesis of pyrroles through nitroalkene-enamine assembly. RSC Adv 2015. [DOI: 10.1039/c4ra09873k] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Zirconocene dichloride was found to be a highly efficient catalyst for the synthesis of multi-substituted pyrroles by a three-component, one-pot reaction.
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Affiliation(s)
- Sandeep Goyal
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research
- Mohali
- India
| | - Jatinkumar K. Patel
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research
- Mohali
- India
| | - Mukesh Gangar
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research
- Mohali
- India
| | - Kapil Kumar
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research
- Mohali
- India
| | - Vipin A. Nair
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research
- Mohali
- India
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206
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Galenko EE, Galenko AV, Khlebnikov AF, Novikov MS. Domino transformation of isoxazoles to 2,4-dicarbonylpyrroles under Fe/Ni relay catalysis. RSC Adv 2015. [DOI: 10.1039/c5ra01889g] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The domino reaction of 5-alkoxy- or 5-aminoisoxazoles, under metal relay catalysis, with symmetric 1,3-diketones gives 4-acylpyrrole-2-carboxylic acid derivatives in high yield.
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Affiliation(s)
- Ekaterina E. Galenko
- Institute of Chemistry
- Saint-Petersburg State University
- 198504 St.-Petersburg
- Russia
| | - Alexey V. Galenko
- Institute of Chemistry
- Saint-Petersburg State University
- 198504 St.-Petersburg
- Russia
| | | | - Mikhail S. Novikov
- Institute of Chemistry
- Saint-Petersburg State University
- 198504 St.-Petersburg
- Russia
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207
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Park JS, Kim J, Kim YH, Sessler JL. Effective tuning of the electronic and photophysical properties of tetrathiafulvalene pyrroles via aromatic heterocycle annulation. RSC Adv 2015. [DOI: 10.1039/c5ra14811a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
The electronic and optical properties of tetrathiafulvalene-pyrrole may be systematically tuned through aromatic heterocycle-annulation.
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Affiliation(s)
- Jung Su Park
- Department of Chemistry
- Sookmyung Womens's University
- Seoul
- South Korea
| | - Jihae Kim
- Department of Chemistry
- Sookmyung Womens's University
- Seoul
- South Korea
| | - Yong-Hoon Kim
- Department of Agricultural Engineering
- National Academy of Agricultural Science
- Rural Development Administration
- Jeonju
- Korea
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208
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Donthiri RR, Samanta S, Adimurthy S. Copper-catalyzed C(sp3)–H functionalization of ketones with vinyl azides: synthesis of substituted-1H-pyrroles. Org Biomol Chem 2015; 13:10113-6. [DOI: 10.1039/c5ob01407g] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A novel copper-catalyzed C(sp3)–H functionalization of ketones with vinyl azides for the synthesis of substituted pyrroles has been developed.
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Affiliation(s)
- Ramachandra Reddy Donthiri
- Academy of Scientific & Innovative Research
- Process Design & Engineering Cell
- CSIR–Central Salt & Marine Chemicals Research Institute
- Bhavnagar-364 002
- India
| | - Supravat Samanta
- Academy of Scientific & Innovative Research
- Process Design & Engineering Cell
- CSIR–Central Salt & Marine Chemicals Research Institute
- Bhavnagar-364 002
- India
| | - Subbarayappa Adimurthy
- Academy of Scientific & Innovative Research
- Process Design & Engineering Cell
- CSIR–Central Salt & Marine Chemicals Research Institute
- Bhavnagar-364 002
- India
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209
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Atar AB, Kim JS, Lim KT, Jeong YT. Bridging homogeneous and heterogeneous catalysis with CAN·SiO2as a solid catalyst for four-component reactions for the synthesis of tetrasubstituted pyrroles. NEW J CHEM 2015. [DOI: 10.1039/c4nj01234h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The attractive features of this methodology are newer and greener methods, simple procedures, reusability and high efficiency of the catalyst and easy workability.
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Affiliation(s)
- Amol B. Atar
- Department of Image Science and Engineering
- Pukyong National University
- Busan 608-737
- Republic of Korea
| | - Jong Su Kim
- Department of Image Science and Engineering
- Pukyong National University
- Busan 608-737
- Republic of Korea
| | - Kwon Taek Lim
- Department of Image Science and Engineering
- Pukyong National University
- Busan 608-737
- Republic of Korea
| | - Yeon Tae Jeong
- Department of Image Science and Engineering
- Pukyong National University
- Busan 608-737
- Republic of Korea
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210
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Wu K, Zhuo MH, Sha D, Fan YS, An D, Jiang YJ, Zhang S. H8-BINOL chiral imidodiphosphoric acid catalyzed highly enantioselective aza-Friedel–Crafts reactions of pyrroles and enamides/imines. Chem Commun (Camb) 2015; 51:8054-7. [DOI: 10.1039/c5cc00685f] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
H8-BINOL-type imidodiphosphoric acid (0.3–2 mol%) catalyzed highly enantioselective aza-Friedel–Crafts reactions of pyrroles and enamides/imines have been developed.
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Affiliation(s)
- Kun Wu
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Ming-Hua Zhuo
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Di Sha
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Yan-Sen Fan
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Dong An
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Yi-Jun Jiang
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Suoqin Zhang
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
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211
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Nakamura E, Tsuji H, Yokoi Y, Furukawa S. Hexaaryl-benzodipyrroles: Properties and Application as Amorphous Carrier-Transporting Materials. HETEROCYCLES 2015. [DOI: 10.3987/com-14-s(k)16] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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212
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One-pot, three-component cascade synthesis of new tetrasubstituted pyrroles by coupling reaction of 2-functionally substituted 2-alkenals, amines, and nitroethane. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.08.040] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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213
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Ueda K, Amaike K, Maceiczyk RM, Itami K, Yamaguchi J. β-Selective C-H arylation of pyrroles leading to concise syntheses of lamellarins C and I. J Am Chem Soc 2014; 136:13226-32. [PMID: 25190257 DOI: 10.1021/ja508449y] [Citation(s) in RCA: 111] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The first general β-selective C-H arylation of pyrroles has been developed by using a rhodium catalyst. This C-H arylation reaction, which is retrosynthetically straightforward but results in unusual regioselectivity, could result in de novo syntheses of pyrrole-derived natural products and pharmaceuticals. As such, we have successfully synthesized polycyclic marine pyrrole alkaloids, lamellarins C and I, by using this β-selective arylation of pyrroles with aryl iodides (C-H/C-I coupling) and a new double C-H/C-H coupling as key steps.
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Affiliation(s)
- Kirika Ueda
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, Nagoya University , Chikusa, Nagoya 464-8602, Japan
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214
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Li T, Xin X, Wang C, Wang D, Wu F, Li X, Wan B. Cu-Catalyzed Ring Opening Reaction of 2H-Azirines with Terminal Alkynes: An Easy Access to 3-Alkynylated Pyrroles. Org Lett 2014; 16:4806-9. [DOI: 10.1021/ol502282j] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Tengfei Li
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Xiaoyi Xin
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Chunxiang Wang
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Dongping Wang
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Fan Wu
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Xincheng Li
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Boshun Wan
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
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215
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Tang J, Yue JJ, Tao FF, Grampp G, Wang BX, Li F, Liang XZ, Shen YM, Xu JH. A Three-Component Reaction by Photoinduced Electron Transfer Mechanism with N-Protected Pyrroles as Neutral Carbon Nucleophiles. J Org Chem 2014; 79:7572-82. [DOI: 10.1021/jo5013114] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Jian Tang
- School
of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing 312000, China
- Jiangsu
Key Laboratory of Biofunctional Materials, School of Chemistry and
Materials Science, Nanjing Normal University, Nanjing 210097, China
| | - Jia-Jun Yue
- Institute
of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Fei-Fei Tao
- School
of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing 312000, China
| | - Guenter Grampp
- Physical
and Theoretical Chemistry, Graz University of Technology, Stremayrgasse
9/Z2, A-8010 Graz, Austria
| | - Bing-Xiang Wang
- Jiangsu
Key Laboratory of Biofunctional Materials, School of Chemistry and
Materials Science, Nanjing Normal University, Nanjing 210097, China
| | - Fang Li
- School
of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing 312000, China
| | - Xue-Zheng Liang
- School
of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing 312000, China
| | - Yong-Miao Shen
- School
of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing 312000, China
| | - Jian-Hua Xu
- Institute
of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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216
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Kaladevi S, Sridhar J, Abhilashamole B, Muthusubramanian S, Bhuvanesh N. Synthesis of substituted 1,3-diaryl-6,7-dihydro-1H-indol-4(5H)-ones from 1-aryl-2-arylaminoethanones. RSC Adv 2014. [DOI: 10.1039/c4ra03975k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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217
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Fabbro C, Armani S, Carloni LE, De Leo F, Wouters J, Bonifazi D. 2,5-Diamide-Substituted Five-Membered Heterocycles: Challenging Molecular Synthons. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402654] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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218
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Zhou N, Xie T, Liu L, Xie Z. Cu/Mn Co-oxidized Cyclization for the Synthesis of Highly Substituted Pyrrole Derivatives from Amino Acid Esters: A Strategy for the Biomimetic Syntheses of Lycogarubin C and Chromopyrrolic Acid. J Org Chem 2014; 79:6061-8. [DOI: 10.1021/jo500740w] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Nini Zhou
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, P. R. China
| | - Tao Xie
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, P. R. China
| | - Lin Liu
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, P. R. China
| | - Zhixiang Xie
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, P. R. China
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219
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Martin MC, Patil DV, France S. Functionalized 4-Carboxy- and 4-Keto-2,3-dihydropyrroles via Ni(II)-Catalyzed Nucleophilic Amine Ring-Opening Cyclizations of Cyclopropanes. J Org Chem 2014; 79:3030-9. [DOI: 10.1021/jo5001059] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. Cynthia Martin
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Dadasaheb V. Patil
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Stefan France
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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220
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Han S, Zard SZ. Modular Approach to Substituted Boc-Protected 4-(Aminomethyl)pyrroles. Org Lett 2014; 16:1992-5. [DOI: 10.1021/ol500544u] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Songzhe Han
- Laboratoire de Synthèse
Organique,
UMR 7652 CNRS/Ecole Polytechnique, 91128 Palaiseau Cedex, France
| | - Samir Z. Zard
- Laboratoire de Synthèse
Organique,
UMR 7652 CNRS/Ecole Polytechnique, 91128 Palaiseau Cedex, France
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221
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Schmidt J, Stark CBW. Synthetic Endeavors toward 2-Nitro-4-Alkylpyrroles in the Context of the Total Synthesis of Heronapyrrole C and Preparation of a Carboxylate Natural Product Analogue. J Org Chem 2014; 79:1920-8. [DOI: 10.1021/jo402240g] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jens Schmidt
- Fachbereich Chemie, Institut
für Organische Chemie, Universität Hamburg, Martin-Luther-King-Platz
6, 20146 Hamburg, Germany
| | - Christian B. W. Stark
- Fachbereich Chemie, Institut
für Organische Chemie, Universität Hamburg, Martin-Luther-King-Platz
6, 20146 Hamburg, Germany
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222
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Synthesis and anticancer activity of focused compound libraries from the natural product lead, oroidin. Bioorg Med Chem 2014; 22:1690-9. [PMID: 24508308 DOI: 10.1016/j.bmc.2014.01.021] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 01/07/2014] [Accepted: 01/15/2014] [Indexed: 01/23/2023]
Abstract
Oroidin (1), (E)-N-(3-(2-amino-1H-imidazol-4-yl)allyl)-4,5-dibromo-1H-pyrrole-2-carboxamide, is a pyrrole alkaloid isolated from the marine sponge Agelas oroides. Routine screening in a panel of twelve cancer cell lines revealed 1 to be poorly cytotoxic with the 50% growth inhibition concentration (GI50) of 42 μM in MCF-7 (breast) cells and 24 μM in A2780 (ovarian) cells and >50 μM in all other cell lines tested. The development of eight focused libraries comprising thirty compounds total identified N-(biphenyl-4-ylmethyl)-1H-pyrrole-2-carboxamide (4l), N-benzyl-4,5-dibromo-1H-pyrrole-2-carboxamide (5a) and N-(biphenyl-4-ylmethyl)-4,5-dibromo-1H-pyrrole-2-carboxamide (5l) as potent inhibitors of cell growth in our panel of cell lines. Of these compounds GI50 values of <5 μM were observed with 4l against HT29 (colon) and SW480 (colon); 5a against HT29; and 5l against HT29, SW480, MCF-7, A431 (skin), Du145 (prostate), BE2-C (neuroblastoma) and MIA (pancreas) cell lines. As a cancer class, colon cancer appears to be more sensitive to the oroidin series of compounds, with analogue 5l being the most active.
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223
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Ballini R, Gabrielli S, Palmieri A, Petrini M. Reaction of α-amido sulfones with functionalized nitrocompounds: a new two-step synthesis of N-alkoxycarbonyl-2,5-disubstituted pyrroles. RSC Adv 2014. [DOI: 10.1039/c4ra08112a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
N-Alkoxycarbonyl-2,5-disubstituted pyrroles can be readily prepared by a new two-step procedure involving a preliminary addition of nitro ketals to α-amido sulfones followed by an acid promoted ring closure of the obtained intermediates through a cascade process.
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Affiliation(s)
- Roberto Ballini
- School of Science and Technology
- Chemistry Division
- Università di Camerino
- I-62032 Camerino, Italy
| | - Serena Gabrielli
- School of Science and Technology
- Chemistry Division
- Università di Camerino
- I-62032 Camerino, Italy
| | - Alessandro Palmieri
- School of Science and Technology
- Chemistry Division
- Università di Camerino
- I-62032 Camerino, Italy
| | - Marino Petrini
- School of Science and Technology
- Chemistry Division
- Università di Camerino
- I-62032 Camerino, Italy
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224
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Yang W, Zhou Y, Sun H, Zhang L, Zhao F, Liu H. One-pot metal-free synthesis of highly substituted pyrroles from 2-acetyl-3-methylene-1,4-dicarbonyl compounds and primary amines via TBHP and activated carbon oxidative aromatization of dihydropyrrole. RSC Adv 2014. [DOI: 10.1039/c3ra47782g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A metal-free cascade process for the synthesis of highly substituted pyrroles with high yields and broad substrate tolerance via enamine, aza-Michael addition and TBHP, activated carbon oxidative aromatization is reported.
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Affiliation(s)
- Wei Yang
- CAS Key Laboratory of Receptor Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203, P. R. China
| | - Yu Zhou
- CAS Key Laboratory of Receptor Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203, P. R. China
| | - Haifeng Sun
- CAS Key Laboratory of Receptor Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203, P. R. China
| | - Lei Zhang
- CAS Key Laboratory of Receptor Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203, P. R. China
| | - Fei Zhao
- CAS Key Laboratory of Receptor Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203, P. R. China
| | - Hong Liu
- CAS Key Laboratory of Receptor Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203, P. R. China
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225
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Khlebnikov AF, Tomashenko OA, Funt LD, Novikov MS. A simple approach to pyrrolylimidazole derivatives by azirine ring expansion with imidazolium ylides. Org Biomol Chem 2014; 12:6598-609. [DOI: 10.1039/c4ob00865k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Versatile synthesis of 1-(1H-pyrrol-3-yl)-1H-imidazole derivatives by a domino reaction of 2H-azirines with 1-alkyl-3-phenacyl-1H-imidazolium bromides is reported.
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Affiliation(s)
| | - Olesya A. Tomashenko
- Institute of Chemistry
- Saint Petersburg State University
- 198504 St. Petersburg, Russia
| | - Liya D. Funt
- Institute of Chemistry
- Saint Petersburg State University
- 198504 St. Petersburg, Russia
| | - Mikhail S. Novikov
- Institute of Chemistry
- Saint Petersburg State University
- 198504 St. Petersburg, Russia
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226
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Cui HL, Tanaka F. One-pot synthesis of polysubstituted 3-acylpyrroles by cooperative catalysis. Org Biomol Chem 2014; 12:5822-6. [DOI: 10.1039/c4ob01019a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polysubstituted 3-acylpyrroles were synthesized from readily available unsaturated ketones and N-substituted propargylated amines via an aza-Michael/alkyne carbocyclization cascade followed by oxidation in one pot.
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Affiliation(s)
- Hai-Lei Cui
- Chemistry and Chemical Bioengineering Unit
- Okinawa Institute of Science and Technology Graduate University
- Onna, Japan
| | - Fujie Tanaka
- Chemistry and Chemical Bioengineering Unit
- Okinawa Institute of Science and Technology Graduate University
- Onna, Japan
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227
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Egorov M, Delpech B, Aubert G, Cresteil T, Garcia-Alvarez MC, Collin P, Marazano C. A concise formation of N-substituted 3,4-diarylpyrroles – synthesis and cytotoxic activity. Org Biomol Chem 2014; 12:1518-24. [DOI: 10.1039/c3ob42309c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sequential condensation of a phenacyl halide with a primary amine and a phenylacetaldehyde led to N-substituted 3,4-diarylpyrroles. Synthesis of analogs of the marine alkaloid halitulin and cytotoxic studies are reported.
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Affiliation(s)
- Maxim Egorov
- Centre de Recherche de Gif
- Institut de Chimie des Substances Naturelles
- CNRS
- 91198 Gif-sur-Yvette Cedex, France
- ATLANTHERA
| | - Bernard Delpech
- Centre de Recherche de Gif
- Institut de Chimie des Substances Naturelles
- CNRS
- 91198 Gif-sur-Yvette Cedex, France
| | - Geneviève Aubert
- Centre de Recherche de Gif
- Institut de Chimie des Substances Naturelles
- CNRS
- 91198 Gif-sur-Yvette Cedex, France
| | - Thierry Cresteil
- Centre de Recherche de Gif
- Institut de Chimie des Substances Naturelles
- CNRS
- 91198 Gif-sur-Yvette Cedex, France
| | | | - Pascal Collin
- Centre de Recherche de Gif
- Institut de Chimie des Substances Naturelles
- CNRS
- 91198 Gif-sur-Yvette Cedex, France
- Université Paris 7 Denis Diderot
| | - Christian Marazano
- Centre de Recherche de Gif
- Institut de Chimie des Substances Naturelles
- CNRS
- 91198 Gif-sur-Yvette Cedex, France
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228
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Xu YH, He T, Zhang QC, Loh TP. Synthesis of multi-substituted pyrroles using enamides and alkynes catalyzed by Pd(OAc)2 with molecular oxygen as an oxidant. Chem Commun (Camb) 2014; 50:2784-6. [DOI: 10.1039/c3cc49683j] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A cyclization reaction between enamides and alkynes catalyzed by palladium(ii) acetate is described. In this method, the molecular oxygen serves as an efficient oxidant for the Pd(ii)/Pd(0) catalytic cycle. The simple reaction conditions permit this methodology to be used as a general tool for the preparation of multi-substituted pyrroles.
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Affiliation(s)
- Yun-He Xu
- Department of Chemistry
- University of Science and Technology of China
- Hefei, P.R. China
| | - Tao He
- Department of Chemistry
- University of Science and Technology of China
- Hefei, P.R. China
| | - Qiu-Chi Zhang
- Department of Chemistry
- University of Science and Technology of China
- Hefei, P.R. China
| | - Teck-Peng Loh
- Department of Chemistry
- University of Science and Technology of China
- Hefei, P.R. China
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
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229
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Yan R, Kang X, Zhou X, Li X, Liu X, Xiang L, Li Y, Huang G. I2-Catalyzed Synthesis of Substituted Pyrroles from α-Amino Carbonyl Compounds and Aldehydes. J Org Chem 2013; 79:465-70. [DOI: 10.1021/jo402620z] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Rulong Yan
- State Key Laboratory of Applied
Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and
Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Xing Kang
- State Key Laboratory of Applied
Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and
Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Xiaoqiang Zhou
- State Key Laboratory of Applied
Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and
Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Xiaoni Li
- State Key Laboratory of Applied
Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and
Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Xingxing Liu
- State Key Laboratory of Applied
Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and
Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Likui Xiang
- State Key Laboratory of Applied
Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and
Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Yamin Li
- State Key Laboratory of Applied
Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and
Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Guosheng Huang
- State Key Laboratory of Applied
Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and
Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou 730000, China
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230
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Nordmann J, Müller TJJ. A one-pot coupling-addition-cyclocondensation sequence (CACS) to 2-substituted 3-acylpyrroles initiated by a copper-free alkynylation. Org Biomol Chem 2013; 11:6556-61. [PMID: 23982686 DOI: 10.1039/c3ob41269e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A novel three-component synthesis of 2-substituted 3-acylpyrroles can be initiated by a copper-free Pd-catalyzed alkynylation in a one-pot fashion. The reaction sequence proceeds under mild reaction conditions and in moderate to good yields with a broad scope of diversity.
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Affiliation(s)
- Jan Nordmann
- Lehrstuhl für Organische Chemie, Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, D-40225, Düsseldorf, Germany.
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231
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Alford JS, Spangler JE, Davies HML. Conversion of Cyclic Ketones to 2,3-Fused Pyrroles and Substituted Indoles. J Am Chem Soc 2013; 135:11712-5. [DOI: 10.1021/ja405043g] [Citation(s) in RCA: 150] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Joshua S. Alford
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia
30322, United States
| | - Jillian E. Spangler
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia
30322, United States
| | - Huw M. L. Davies
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia
30322, United States
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232
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Shanahan CS, Truong P, Mason SM, Leszczynski JS, Doyle MP. Diazoacetoacetate enones for the synthesis of diverse natural product-like scaffolds. Org Lett 2013; 15:3642-5. [PMID: 23829448 PMCID: PMC3806194 DOI: 10.1021/ol4015199] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Diazoacetoacetate enones are a new class of Michael acceptors that enable the efficient construction of natural product-like scaffolds. Through their Michael addition reactions, including those with silyl enol ethers, indoles, pyrroles, and amines, δ-functionalized diazoacetoacetates are formed in high yield and with overall operational efficiency. Subsequent catalytic dinitrogen extrusion reactions provide access to a diverse series of natural product-like carbo- and heterocyclic ring systems in only three steps from commercial materials.
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Affiliation(s)
- Charles S. Shanahan
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742
| | - Phong Truong
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742
| | - Savannah M. Mason
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742
| | - John S. Leszczynski
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742
| | - Michael P. Doyle
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742
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233
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Gou L, Wu Q, Lin S, Li X, Liang J, Zhou X, An D, Deng Z, Wang Z. Mutasynthesis of pyrrole spiroketal compound using calcimycin 3-hydroxy anthranilic acid biosynthetic mutant. Appl Microbiol Biotechnol 2013; 97:8183-91. [PMID: 23666477 DOI: 10.1007/s00253-013-4882-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Revised: 03/05/2013] [Accepted: 03/24/2013] [Indexed: 11/30/2022]
Abstract
The five-membered aromatic nitrogen heterocyclic pyrrole ring is a building block for a wide variety of natural products. Aiming at generating new pyrrole-containing derivatives as well as to identify new candidates that may be of value in designing new anticancer, antiviral, and/or antimicrobial agents, we employed a strategy on pyrrole-containing compound mutasynthesis using the pyrrole-containing calcimycin biosynthetic gene cluster. We blocked the biosynthesis of the calcimycin precursor, 3-hydroxy anthranilic acid, by deletion of calB1-3 and found that two intermediates containing the pyrrole and the spiroketal moiety were accumulated in the culture. We then fed the mutant using the structurally similar compound of 3-hydroxy anthranilic acid. At least four additional new pyrrole spiroketal derivatives were obtained. The structures of the intermediates and the new pyrrole spiroketal derivatives were identified using LC-MS and NMR. One of them shows enhanced antibacterial activity. Our work shows a new way of pyrrole derivative biosynthetic mutasynthesis.
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Affiliation(s)
- Lixia Gou
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shannxi, 712100, China
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234
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235
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Shigeoka D, Kamon T, Yoshimitsu T. Formal synthesis of (-)-agelastatin A: an iron(II)-mediated cyclization strategy. Beilstein J Org Chem 2013; 9:860-5. [PMID: 23766801 PMCID: PMC3678661 DOI: 10.3762/bjoc.9.99] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2013] [Accepted: 04/10/2013] [Indexed: 12/20/2022] Open
Abstract
An iron(II)-mediated aminohalogenation of a cyclopentenyl N-tosyloxycarbamate provided new access to the key intermediate for the synthesis of (-)-agelastatin A (AA, 1), a potent antiproliferative alkaloid. The present synthetic endeavour offered an insight into the mechanism underlying the iron(II)-mediated aminohalogenation of N-tosyloxycarbamate, in which the radical properties of the N-iron intermediates in the redox states were operative.
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Affiliation(s)
- Daisuke Shigeoka
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
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236
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Wang R, Xu XP, Meng H, Wang SY, Ji SJ. 3-Phenacylideneoxindoles with tosylmethyl isocyanide and MeOH through C–C bond cleavage: facile synthesis of pyrrole and 2H-pyrrolo[3,4-c]quinoline derivatives. Tetrahedron 2013. [DOI: 10.1016/j.tet.2012.11.088] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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237
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Fesenko AA, Shutalev AD. Synthesis of γ-Azido-β-ureido Ketones and Their Transformation into Functionalized Pyrrolines and Pyrroles via Staudinger/aza-Wittig Reaction. J Org Chem 2013; 78:1190-207. [DOI: 10.1021/jo302724y] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Anastasia A. Fesenko
- Department of Organic Chemistry, Moscow State University of Fine Chemical Technologies, 86 Vernadsky
Avenue, 119571 Moscow, Russian Federation
| | - Anatoly D. Shutalev
- Department of Organic Chemistry, Moscow State University of Fine Chemical Technologies, 86 Vernadsky
Avenue, 119571 Moscow, Russian Federation
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238
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Prodius D, Macaev F, Stingaci E, Pogrebnoi V, Mereacre V, Novitchi G, Kostakis GE, Anson CE, Powell AK. Catalytic “triangles”: binding of iron in task-specific ionic liquids. Chem Commun (Camb) 2013; 49:1915-7. [DOI: 10.1039/c2cc36741f] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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239
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Humenny WJ, Kyriacou P, Sapeta K, Karadeolian A, Kerr MA. Multicomponent Synthesis of Pyrroles from Cyclopropanes: A One-Pot Palladium(0)-Catalyzed Dehydrocarbonylation/Dehydration. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206177] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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240
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Humenny WJ, Kyriacou P, Sapeta K, Karadeolian A, Kerr MA. Multicomponent Synthesis of Pyrroles from Cyclopropanes: A One-Pot Palladium(0)-Catalyzed Dehydrocarbonylation/Dehydration. Angew Chem Int Ed Engl 2012; 51:11088-91. [DOI: 10.1002/anie.201206177] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Indexed: 11/06/2022]
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241
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Kaschel J, Schneider TF, Kratzert D, Stalke D, Werz DB. Dominoreaktionen Donor-Akzeptor-substituierter Cyclopropane zur Synthese 3,3′-verknüpfter Oligopyrrole und Pyrrolo[3,2-e]indole. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201205880] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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242
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Domino Reactions of Donor-Acceptor-Substituted Cyclopropanes for the Synthesis of 3,3′-Linked Oligopyrroles and Pyrrolo[3,2-e]indoles. Angew Chem Int Ed Engl 2012; 51:11153-6. [DOI: 10.1002/anie.201205880] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2012] [Indexed: 11/07/2022]
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243
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McMurray L, Beck EM, Gaunt MJ. Chemical Synthesis of Aspidosperma Alkaloids Inspired by the Reverse of the Biosynthesis of the Rhazinilam Family of Natural Products. Angew Chem Int Ed Engl 2012; 51:9288-91. [DOI: 10.1002/anie.201204151] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2012] [Indexed: 11/12/2022]
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244
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McMurray L, Beck EM, Gaunt MJ. Chemical Synthesis of Aspidosperma Alkaloids Inspired by the Reverse of the Biosynthesis of the Rhazinilam Family of Natural Products. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204151] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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245
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Khlebnikov AF, Golovkina MV, Novikov MS, Yufit DS. A Novel Strategy for the Synthesis of 3-(N-Heteryl)pyrrole Derivatives. Org Lett 2012; 14:3768-71. [DOI: 10.1021/ol3016594] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Alexander F. Khlebnikov
- Department of Chemistry, Saint Petersburg State University, Universitetskii pr. 26, 198504 St. Petersburg, Russia, and Department of Chemistry, University of Durham, Durham, South Road, DH1 3LE, U.K
| | - Maria V. Golovkina
- Department of Chemistry, Saint Petersburg State University, Universitetskii pr. 26, 198504 St. Petersburg, Russia, and Department of Chemistry, University of Durham, Durham, South Road, DH1 3LE, U.K
| | - Mikhail S. Novikov
- Department of Chemistry, Saint Petersburg State University, Universitetskii pr. 26, 198504 St. Petersburg, Russia, and Department of Chemistry, University of Durham, Durham, South Road, DH1 3LE, U.K
| | - Dmitry S. Yufit
- Department of Chemistry, Saint Petersburg State University, Universitetskii pr. 26, 198504 St. Petersburg, Russia, and Department of Chemistry, University of Durham, Durham, South Road, DH1 3LE, U.K
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246
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Kumar I, Mir NA, Ramaraju P, Wakhloo BP. Organocatalytic Mannich/cyclization/aromatization sequence: direct synthesis of substituted pyrrole-3-carboxaldehydes. RSC Adv 2012. [DOI: 10.1039/c2ra21258g] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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247
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248
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Yamaguchi AD, Mandal D, Yamaguchi J, Itami K. Oxidative C–H/C–H Coupling of Azine and Indole/Pyrrole Nuclei: Palladium Catalysis and Synthesis of Eudistomin U. CHEM LETT 2011. [DOI: 10.1246/cl.2011.555] [Citation(s) in RCA: 109] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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249
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Affiliation(s)
- Roderick W. Bates
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - S. Sridhar
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
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250
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Russel JS, Pelkey ET, Greger JG. Five-Membered Ring Systems. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/b978-0-08-096805-6.00006-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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