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Chebieb A, Cha JK. A Cascade Synthesis of Indoles. J Org Chem 2024; 89:10293-10298. [PMID: 38963688 DOI: 10.1021/acs.joc.4c01190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/05/2024]
Abstract
We report herein an expedient method for the regioselective synthesis of indoles from o-haloanilines and α-ketol-derived N-tosylhydrazones. This two-step, modular synthesis of N-H indoles can be carried out conveniently without purification of intermediates.
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Affiliation(s)
- Assia Chebieb
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
- Laboratory of Catalysis and Organic Synthesis LCSCO, University of Tlemcen, Tlemcen 13000, Algeria
| | - Jin Kun Cha
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
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2
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Foschi F, Tinivella A, Crippa V, Pinzi L, Mologni L, Passarella D, Rastelli G. Structure-activity exploration of a small-molecule allosteric inhibitor of T790M/L858R double mutant EGFR. J Enzyme Inhib Med Chem 2023; 38:239-245. [PMID: 36373202 PMCID: PMC9665079 DOI: 10.1080/14756366.2022.2145284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
EGFR is a protein kinase whose aberrant activity is frequently involved in the development of non-small lung cancer (NSCLC) drug resistant forms. The allosteric inhibition of this enzyme is currently one among the most attractive approaches to design and develop anticancer drugs. In a previous study, we reported the identification of a hit compound acting as type III allosteric inhibitor of the L858R/T790M double mutant EGFR. Herein, we report the design, synthesis and in vitro testing of a series of analogues of the previously identified hit with the aim of exploring the structure-activity relationships (SAR) around this scaffold. The performed analyses allowed us to identify two compounds 15 and 18 showing improved inhibition of double mutant EGFR with respect to the original hit, as well as interesting antiproliferative activity against H1975 NSCLC cancer cells expressing double mutant EGFR. The newly discovered compounds represent promising starting points for further hit-to-lead optimisation.
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Affiliation(s)
- Francesca Foschi
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy.,Department of Chemistry, University of Milano, Milano, Italy
| | - Annachiara Tinivella
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Valentina Crippa
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Luca Pinzi
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Luca Mologni
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | | | - Giulio Rastelli
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
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3
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Abstract
A convenient method for the synthesis of indoles has been developed by the sequential orchestration of the cross-coupling reaction of o-haloaniline and PIFA oxidation of the resulting 2-alkenylanilines. A highlight of this two-step indole synthesis is a modular strategy which is applicable to both acyclic and cyclic starting materials. Particularly noteworthy is the regiochemistry that is complementary to the Fischer indole synthesis and related variants. Direct preparation of N-H indoles with no N-protecting group is also advantageous.
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Affiliation(s)
- Assia Chebieb
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
- Laboratory of Catalysis and Organic Synthesis LCSCO, University of Tlemcen, Tlemcen 13000, Algeria
| | - Young Gyu Kim
- Department of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Jin Kun Cha
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
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4
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Molnár Á. Recent Advances in the Synthesis of Five‐membered Nitrogen Heterocycles Induced by Palladium Ions and Complexes. ChemistrySelect 2023. [DOI: 10.1002/slct.202300153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- Árpád Molnár
- Department of Organic Chemistry University of Szeged Dóm tér 8 6720 Szeged Hungary
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5
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Xu Z, Xu J, Zhou Y, Huang Y, Li Y. Pd immobilized on EDTA-modified cellulose: synthesis, characterization, and catalytic application in inter- and intramolecular Heck reactions and Larock reactions. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04766-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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6
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Sahu S, Banerjee A, Kundu S, Bhattacharyya A, Maji MS. Synthesis of functionalized indoles via cascade benzannulation strategies: a decade's overview. Org Biomol Chem 2022; 20:3029-3042. [PMID: 35332905 DOI: 10.1039/d2ob00187j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Indoles are one of the most prominent aromatic heterocycles in the organic chemistry field. Due to their widespread presence in various natural products, alkaloids, drugs, approved medicines, etc. the synthesis and functionalization of indoles are of great interest. This review emphasizes recent developments and techniques in the domino cascade cyclization process in the last decade starting from the various building blocks. In particular, this review depicts several intriguing benzannulation methods of creating a benzene ring on a pre-existing pyrrole nucleus in an inter/intramolecular fashion under metal-catalyzed/metal-free approaches. Different subsections focus on gradual timely developments in this complementary area and a detailed analysis of the mechanisms and reactivity patterns. As a complementary method, this review gives a significant incentive to various annulation strategies and also gives an overview of the remaining challenges and upcoming possibilities.
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Affiliation(s)
- Samrat Sahu
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, India.
| | - Ankush Banerjee
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, India.
| | - Samrat Kundu
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, India.
| | - Arya Bhattacharyya
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, India.
| | - Modhu Sudan Maji
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, India.
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7
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Belen’kii LI, Gazieva GA, Evdokimenkova YB, Soboleva NO. The literature of heterocyclic chemistry, Part XX, 2020. ADVANCES IN HETEROCYCLIC CHEMISTRY 2022. [DOI: 10.1016/bs.aihch.2022.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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8
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Vaz B, Martínez C, Cruz F, Denis JG, de Lera ÁR, Aurrecoechea JM, Álvarez R. Palladium-Catalyzed Aminocyclization-Coupling Cascades: Preparation of Dehydrotryptophan Derivatives and Computational Study. J Org Chem 2021; 86:8766-8785. [PMID: 34125552 PMCID: PMC8929666 DOI: 10.1021/acs.joc.1c00636] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Indexed: 12/31/2022]
Abstract
Dehydrotryptophan derivatives have been prepared by palladium-catalyzed aminocyclization-Heck-type coupling cascades starting from o-alkynylaniline derivatives and methyl α-aminoacrylate. Aryl, alkyl (primary, secondary, and tertiary), and alkenyl substituents have been introduced at the indole C-2 position. Further variations at the indole benzene ring, as well as the C-2-unsubstituted case, have all been demonstrated. In the case of C-2 aryl substitution, the preparation of the o-alkynylaniline substrate by Sonogashira coupling and the subsequent cyclization-coupling cascade have been performed in a one-pot protocol with a single catalyst. DFT calculations have revealed significant differences in the reaction profiles of these reactions relative to those involving methyl acrylate or methacrylate, and between the reactions of the free anilines and their corresponding carbamates. Those calculations suggest that the nature of the alkene and of the acid HX released in the HX/alkene exchange step that precedes C-C bond formation could be responsible for the experimentally observed differences in reaction efficiencies.
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Affiliation(s)
- Belén Vaz
- Departamento
de Química Orgánica, Facultad de Química (CINBIO)
and Instituto de Investigación Biomédica de Vigo (IBIV), Universidade de Vigo, Lagoas-Marcosende, 36310 Vigo, Spain
| | - Claudio Martínez
- Departamento
de Química Orgánica, Facultad de Química (CINBIO)
and Instituto de Investigación Biomédica de Vigo (IBIV), Universidade de Vigo, Lagoas-Marcosende, 36310 Vigo, Spain
| | - Francisco Cruz
- Departamento
de Química Orgánica, Facultad de Química (CINBIO)
and Instituto de Investigación Biomédica de Vigo (IBIV), Universidade de Vigo, Lagoas-Marcosende, 36310 Vigo, Spain
| | - J. Gabriel Denis
- Departamento
de Química Orgánica, Facultad de Química (CINBIO)
and Instituto de Investigación Biomédica de Vigo (IBIV), Universidade de Vigo, Lagoas-Marcosende, 36310 Vigo, Spain
| | - Ángel R. de Lera
- Departamento
de Química Orgánica, Facultad de Química (CINBIO)
and Instituto de Investigación Biomédica de Vigo (IBIV), Universidade de Vigo, Lagoas-Marcosende, 36310 Vigo, Spain
| | - José M. Aurrecoechea
- Departamento
de Química Orgánica e Inorgánica, Facultad de
Ciencia y Tecnología, Universidad
del País Vasco UPV/EHU, Apartado 644, 48080 Bilbao, Spain
| | - Rosana Álvarez
- Departamento
de Química Orgánica, Facultad de Química (CINBIO)
and Instituto de Investigación Biomédica de Vigo (IBIV), Universidade de Vigo, Lagoas-Marcosende, 36310 Vigo, Spain
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9
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Liu Z, Hu X, Yang C, Xie H, Jiang H, Zeng W. Rh(III)‐Catalyzed C
sp
2
−C
sp
3
Bond Cleavage/Carbonylethylation of α‐Indolyl Alcohols. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001430] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Zhipeng Liu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510641 People's Republic of China
| | - Xinwei Hu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510641 People's Republic of China
| | - Can Yang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510641 People's Republic of China
| | - Haisheng Xie
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510641 People's Republic of China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510641 People's Republic of China
| | - Wei Zeng
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510641 People's Republic of China
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Qin H, Zhang J, Qiao K, Zhang D, He W, Liu C, Fang Z, Guo K. Palladium-Catalyzed C2-Regioselective Perfluoroalkylation of the Free (NH)-Heteroarenes. J Org Chem 2021; 86:2840-2853. [PMID: 33433213 DOI: 10.1021/acs.joc.0c02782] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A highly regioselective and atom-efficient strategy for the construction of fused free (NH) heteroarenes through a palladium-catalyzed perfluoroalkyl insertion reaction has been accomplished. This protocol employed multiple iodofluoroalkanes as practical and available perfluoroalkyl sources to provide an operationally simple and versatile route for the synthesis of perfluoroalkylated indoles. Moreover, indoles without the assistance of guide groups were utilized as substrates, achieving C(sp2)-H site-selective functionalization of indoles in yields up to 95%. Furthermore, this protocol was also used for late-stage C2 perfluoroalkylation of bioactive compounds such as auxin, tryptophan, and melatonin analogues.
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Affiliation(s)
- Hong Qin
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Road South, Nanjing 211816, P. R. China
| | - Jie Zhang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Road South, Nanjing 211816, P. R. China
| | - Kai Qiao
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Road South, Nanjing 211816, P. R. China
| | - Dong Zhang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Road South, Nanjing 211816, P. R. China
| | - Wei He
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Road South, Nanjing 211816, P. R. China
| | - Chengkou Liu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Road South, Nanjing 211816, P. R. China
| | - Zheng Fang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Road South, Nanjing 211816, P. R. China
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Road South, Nanjing 211816, P. R. China.,State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China
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11
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San Jang S, Kim YH, Youn SW. Divergent Syntheses of Indoles and Quinolines Involving N1-C2-C3 Bond Formation through Two Distinct Pd Catalyses. Org Lett 2020; 22:9151-9157. [PMID: 33048557 DOI: 10.1021/acs.orglett.0c02898] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Pd-catalyzed annulative couplings of 2-alkenylanilines with aldehydes using alcohols as both the solvent and hydrogen source have been developed. These domino processes allow divergent syntheses of two significant N-heterocycles, indoles and quinolines, from the same substrate by tuning reaction parameters, which seems to invoke two distinct mechanisms. The nature of the ligand and alcoholic solvent had a profound influence on the selectivity and efficiency of these protocols. Particularly noteworthy is that indole formation was achieved by overcoming two significant challenges, regioselective hydropalladation of alkenes and subsequent reactions between the resulting Csp3-Pd species and less reactive imines.
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Affiliation(s)
- Su San Jang
- Center for New Directions in Organic Synthesis, Department of Chemistry and Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea
| | - Young Ho Kim
- Center for New Directions in Organic Synthesis, Department of Chemistry and Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea
| | - So Won Youn
- Center for New Directions in Organic Synthesis, Department of Chemistry and Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea
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