1
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López-Francés A, Serna-Burgos Z, Del Corte X, de Los Santos JM, de Cózar A, Vicario J. Exploring the Reactivity of Rigid 1-Azadienes Derived from Methylene γ-Lactams. Applications to the Stereoselective Synthesis of Spiro-γ-Lactams. J Org Chem 2024; 89:9502-9515. [PMID: 38901015 PMCID: PMC11232019 DOI: 10.1021/acs.joc.4c00822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
A study on the reactivity of rigid 1-azadienes derived from methylene γ-lactams is reported. Through the functionalization of 1-amino α,β-unsaturated γ-lactam derivatives, easily available from a multicomponent reaction of amines, aldehydes, and pyruvates, it is possible to in situ generate rigid 1-azadienes locked by a γ-lactam core. The 4π-electron system of those rigid 1-azadienes can behave as both diene and dienophile species through a spontaneous cyclodimerization reaction or exclusively as dienes or dienophiles if they are trapped with imines or cyclopentadiene, respectively. The use of chiral rigid 1-azadienes as dienophiles in the cycloaddition reaction with cyclopentadiene leads to the formation of spiro-γ-lactams bearing four stereogenic centers in a highly stereospecific manner, reporting the first example of the use of methylene-γ-lactams in the synthesis of spirocycles.
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Affiliation(s)
- Adrián López-Francés
- Department of Organic Chemistry I, Faculty of Pharmacy, University of the Basque Country, UPV/EHU. Paseo de la Universidad 7, Vitoria-Gasteiz 01006, Spain
| | - Zuriñe Serna-Burgos
- Department of Organic Chemistry I, Faculty of Pharmacy, University of the Basque Country, UPV/EHU. Paseo de la Universidad 7, Vitoria-Gasteiz 01006, Spain
| | - Xabier Del Corte
- Department of Organic Chemistry I, Faculty of Pharmacy, University of the Basque Country, UPV/EHU. Paseo de la Universidad 7, Vitoria-Gasteiz 01006, Spain
| | - Jesús M de Los Santos
- Department of Organic Chemistry I, Faculty of Pharmacy, University of the Basque Country, UPV/EHU. Paseo de la Universidad 7, Vitoria-Gasteiz 01006, Spain
| | - Abel de Cózar
- Department of Organic Chemistry I, Donostia International Physics Centre (DIPC), University of the Basque Country, UPV/EHU. Paseo Manuel de Lardizabal, 3, Donostia-San Sebastián 20018, Spain
- Ikerbasque, Basque Foundation for Science, Plaza Euskadi 5, Bilbao 48009, Spain
| | - Javier Vicario
- Department of Organic Chemistry I, Faculty of Pharmacy, University of the Basque Country, UPV/EHU. Paseo de la Universidad 7, Vitoria-Gasteiz 01006, Spain
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2
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Bag S, Liu J, Patil S, Bonowski J, Koska S, Schölermann B, Zhang R, Wang L, Pahl A, Sievers S, Brieger L, Strohmann C, Ziegler S, Grigalunas M, Waldmann H. A divergent intermediate strategy yields biologically diverse pseudo-natural products. Nat Chem 2024; 16:945-958. [PMID: 38365941 PMCID: PMC11164679 DOI: 10.1038/s41557-024-01458-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 01/22/2024] [Indexed: 02/18/2024]
Abstract
The efficient exploration of biologically relevant chemical space is essential for the discovery of bioactive compounds. A molecular design principle that possesses both biological relevance and structural diversity may more efficiently lead to compound collections that are enriched in diverse bioactivities. Here the diverse pseudo-natural product (PNP) strategy, which combines the biological relevance of the PNP concept with synthetic diversification strategies from diversity-oriented synthesis, is reported. A diverse PNP collection was synthesized from a common divergent intermediate through developed indole dearomatization methodologies to afford three-dimensional molecular frameworks that could be further diversified via intramolecular coupling and/or carbon monoxide insertion. In total, 154 PNPs were synthesized representing eight different classes. Cheminformatic analyses showed that the PNPs are structurally diverse between classes. Biological investigations revealed the extent of diverse bioactivity enrichment of the collection in which four inhibitors of Hedgehog signalling, DNA synthesis, de novo pyrimidine biosynthesis and tubulin polymerization were identified from four different PNP classes.
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Affiliation(s)
- Sukdev Bag
- Department of Chemical Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Dortmund, Germany
| | - Jie Liu
- Department of Chemical Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Sohan Patil
- Department of Chemical Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Jana Bonowski
- Department of Chemical Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Sandra Koska
- Department of Chemical Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Beate Schölermann
- Department of Chemical Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Ruirui Zhang
- Department of Chemical Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Lin Wang
- Department of Chemical Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Axel Pahl
- Department of Chemical Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
- Compound Management and Screening Center, Dortmund, Germany
| | - Sonja Sievers
- Department of Chemical Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
- Compound Management and Screening Center, Dortmund, Germany
| | - Lukas Brieger
- Faculty of Chemistry and Chemical Biology, Inorganic Chemistry, TU Dortmund University, Dortmund, Germany
| | - Carsten Strohmann
- Faculty of Chemistry and Chemical Biology, Inorganic Chemistry, TU Dortmund University, Dortmund, Germany
| | - Slava Ziegler
- Department of Chemical Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Michael Grigalunas
- Department of Chemical Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Herbert Waldmann
- Department of Chemical Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany.
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Dortmund, Germany.
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3
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Xie J, Pahl A, Krzyzanowski A, Krupp A, Liu J, Koska S, Schölermann B, Zhang R, Bonowski J, Sievers S, Strohmann C, Ziegler S, Grigalunas M, Waldmann H. Synthetic Matching of Complex Monoterpene Indole Alkaloid Chemical Space. Angew Chem Int Ed Engl 2023; 62:e202310222. [PMID: 37818743 DOI: 10.1002/anie.202310222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 10/02/2023] [Accepted: 10/06/2023] [Indexed: 10/13/2023]
Abstract
Monoterpene indole alkaloids (MIAs) are endowed with high structural and spatial complexity and characterized by diverse biological activities. Given this complexity-activity combination in MIAs, rapid and efficient access to chemical matter related to and with complexity similar to these alkaloids would be highly desirable, since such compound classes might display novel bioactivity. We describe the design and synthesis of a pseudo-natural product (pseudo-NP) collection obtained by the unprecedented combination of MIA fragments through complexity-generating transformations, resulting in arrangements not currently accessible by biosynthetic pathways. Cheminformatic analyses revealed that both the pseudo-NPs and the MIAs reside in a unique and common area of chemical space with high spatial complexity-density that is only sparsely populated by other natural products and drugs. Investigation of bioactivity guided by morphological profiling identified pseudo-NPs that inhibit DNA synthesis and modulate tubulin. These results demonstrate that the pseudo-NP collection occupies similar biologically relevant chemical space that Nature has endowed MIAs with.
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Affiliation(s)
- Jianing Xie
- Department of Chemical Biology, Max-Planck-Institute of Molecular Physiology, Otto-Hahn-Straße 11, 44227, Dortmund, Germany
| | - Axel Pahl
- Department of Chemical Biology, Max-Planck-Institute of Molecular Physiology, Otto-Hahn-Straße 11, 44227, Dortmund, Germany
- Compound Management and Screening Center (COMAS), Otto-Hahn-Straße 11, 44227, Dortmund, Germany
| | - Adrian Krzyzanowski
- Department of Chemical Biology, Max-Planck-Institute of Molecular Physiology, Otto-Hahn-Straße 11, 44227, Dortmund, Germany
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Straße 6, 44227, Dortmund, Germany
| | - Anna Krupp
- Faculty of Chemistry, Inorganic Chemistry, TU Dortmund University, Otto-Hahn-Straße 6, 44227, Dortmund, Germany
| | - Jie Liu
- Department of Chemical Biology, Max-Planck-Institute of Molecular Physiology, Otto-Hahn-Straße 11, 44227, Dortmund, Germany
| | - Sandra Koska
- Department of Chemical Biology, Max-Planck-Institute of Molecular Physiology, Otto-Hahn-Straße 11, 44227, Dortmund, Germany
| | - Beate Schölermann
- Department of Chemical Biology, Max-Planck-Institute of Molecular Physiology, Otto-Hahn-Straße 11, 44227, Dortmund, Germany
| | - Ruirui Zhang
- Department of Chemical Biology, Max-Planck-Institute of Molecular Physiology, Otto-Hahn-Straße 11, 44227, Dortmund, Germany
| | - Jana Bonowski
- Department of Chemical Biology, Max-Planck-Institute of Molecular Physiology, Otto-Hahn-Straße 11, 44227, Dortmund, Germany
| | - Sonja Sievers
- Department of Chemical Biology, Max-Planck-Institute of Molecular Physiology, Otto-Hahn-Straße 11, 44227, Dortmund, Germany
- Compound Management and Screening Center (COMAS), Otto-Hahn-Straße 11, 44227, Dortmund, Germany
| | - Carsten Strohmann
- Faculty of Chemistry, Inorganic Chemistry, TU Dortmund University, Otto-Hahn-Straße 6, 44227, Dortmund, Germany
| | - Slava Ziegler
- Department of Chemical Biology, Max-Planck-Institute of Molecular Physiology, Otto-Hahn-Straße 11, 44227, Dortmund, Germany
| | - Michael Grigalunas
- Department of Chemical Biology, Max-Planck-Institute of Molecular Physiology, Otto-Hahn-Straße 11, 44227, Dortmund, Germany
| | - Herbert Waldmann
- Department of Chemical Biology, Max-Planck-Institute of Molecular Physiology, Otto-Hahn-Straße 11, 44227, Dortmund, Germany
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Straße 6, 44227, Dortmund, Germany
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4
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Ma X, Feng A, Zhang D. Origin of Enantio- and Chemoselectivity in the Synthesis of Spirocycles via Palladium/Xu-Phos-Catalyzed Cascade Heck/Remote C(sp 2)-H Alkylation: A Computational Mechanistic Study. J Phys Chem A 2023; 127:8882-8891. [PMID: 37830770 DOI: 10.1021/acs.jpca.3c05161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
Density functional theory (DFT) calculations were performed to study the mechanism and factors affecting the enantio-, regio-, and chemoselectivities in the palladium/Xu-Phos-catalyzed cascade Heck/remote C(sp2)-H alkylation reaction. The active catalyst is found to be able to sustain coordination with P and S atoms and can adapt its coordination mode to accommodate the significant steric hindrance between the ligand and substrate, unlike previous findings that showed coordination with P and O atoms. The reaction is established to occur in sequence through the oxidative addition of the aryl iodide to Pd(0), intramolecular alkene insertion, C(sp2)-H bond activation, and C(sp2)-C(sp3) bond reductive elimination. The C(sp2)-C(sp3) bond reductive elimination is identified as the rate-determining step, and the intramolecular alkene insertion as the enantioselectivity-determining step. The high enantioselectivity originates from the stronger electronic interaction between the catalyst and substrate; the exclusive 5-exo-regioselectivity is due to the stronger nucleophilicity of the terminal alkene carbon atom, and the chemoselectivity of C-H activation over carboiodination is driven by thermodynamics.
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Affiliation(s)
- Xuexiang Ma
- Key Lab of Colloid and Interface Chemistry, Ministry of Education, Institute of Theoretical Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
| | - Aili Feng
- Key Lab of Colloid and Interface Chemistry, Ministry of Education, Institute of Theoretical Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
| | - Dongju Zhang
- Key Lab of Colloid and Interface Chemistry, Ministry of Education, Institute of Theoretical Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
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5
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Bag D, Sawant SD. Ag(I)-catalyzed dearomatizing spirocyclization/nucleophile addition cascade reactions of indole-tethered ynones. Chem Commun (Camb) 2023; 59:12649-12652. [PMID: 37792005 DOI: 10.1039/d3cc03543c] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Ag(I)-catalyzed highly diastereoselective construction of divergent spiroindolines is disclosed herein. The approach proceeds via dearomatizing spirocyclization of indole-tethered ynones followed by C-nucleophile or hydride trapping. The established strategy is accompanied by the generation of two new C-C bonds and two contiguous stereocenters. This strategy features a broad range of (hetero)arenes as C-nucleophiles and excellent diastereoselectivity.
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Affiliation(s)
- Debojyoti Bag
- Natural Products and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu & Kashmir, 180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Sanghapal D Sawant
- Natural Products and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu & Kashmir, 180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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6
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Hayrapetyan D, Yussupova L, Kaipov A, Galyamova A. Electrochemical synthesis of spirocyclic morpholines and tetrahydrofurans via an oxidative dearomatisation strategy. Org Biomol Chem 2023; 21:7090-7094. [PMID: 37605629 DOI: 10.1039/d3ob01176c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
Simple and scalable electrochemical oxidation of the electron-rich benzene ring followed by intramolecular capture of reactive cation-radical intermediates opens access to spirocyclic morpholines and tetrahydrofurans. The obtained molecules can be readily modified to value-added building blocks.
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Affiliation(s)
- Davit Hayrapetyan
- Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, 53 Kabanbay Batyr Ave., 010000 Astana, Kazakhstan.
| | - Lyailya Yussupova
- Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, 53 Kabanbay Batyr Ave., 010000 Astana, Kazakhstan.
| | - Almaz Kaipov
- Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, 53 Kabanbay Batyr Ave., 010000 Astana, Kazakhstan.
| | - Aigerim Galyamova
- Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, 53 Kabanbay Batyr Ave., 010000 Astana, Kazakhstan.
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7
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Shi SX, Zhang HH, Wang YL, Jiang LH, Xu PF, Luo YC. Visible-Light-Mediated Intermolecular [2 + 2]-Cycloaddition Reaction of 3-Alkylideneindolin-2-one with Alkenes via Triplet Energy Transfer for the Synthesis of 3-Spirocyclobutyl Oxindoles. Org Lett 2023; 25:5426-5430. [PMID: 37458365 DOI: 10.1021/acs.orglett.3c01695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
[2 + 2]-Cycloaddition is the most straightforward approach to the construction of cyclobutanes. In this paper, the intermolecular [2 + 2]-cycloaddition reaction of 3-alkylideneindolin-2-ones with alkenes was achieved. This reaction can be used in the synthesis of 3-spirocyclobutyl oxindoles, polycyclic oxindoles, and late stage modification of some drug molecules.
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Affiliation(s)
- Shao-Xian Shi
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Huan-Huan Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Yi-Lin Wang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Lin-Hong Jiang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730000, P. R. China
| | - Yong-Chun Luo
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730000, P. R. China
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8
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Lin CY, Huang WW, Huang YT, Dhole S, Barve IJ, Sun CM. Rh(III)-Catalyzed Switchable [4 + 1] and [4 + 2] Annulation of N-Aryl Pyrazolones with Maleimides: An Access to Spiro Pyrazolo[1,2- a]indazole-pyrrolidine and Fused Pyrazolopyrrolo Cinnolines. J Org Chem 2023; 88:3424-3435. [PMID: 36864685 DOI: 10.1021/acs.joc.2c02338] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
A rhodium(III)-catalyzed controllable [4 + 1] and [4 + 2] annulation of N-aryl pyrazolones with maleimides as C1 and C2 synthon has been explored for the synthesis of spiro[pyrazolo[1,2-a]indazole-pyrrolidines] and fused pyrazolopyrrolo cinnolines. The product selectivity was achieved through time-dependent annulation. The [4 + 1] annulation reaction involves sequential Rh(III)-catalyzed C-H alkenylation of N-aryl pyrazolone, followed by an intramolecular spirocyclization via aza-Michael-type addition to afford spiro[pyrazolo[1,2-a]indazole-pyrrolidine]. However, prolonged reaction time converts in situ formed spiro[pyrazolo[1,2-a]indazole-pyrrolidine] into fused pyrazolopyrrolocinnoline. This unique product formation switch proceeds via strain-driven ring expansion through a 1,2-shift of the C-C bond.
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Affiliation(s)
- Chih-Yu Lin
- Department of Applied Chemistry, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan, ROC
| | - Wan-Wen Huang
- Department of Applied Chemistry, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan, ROC
| | - Ying-Ti Huang
- Department of Applied Chemistry, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan, ROC
| | - Sandip Dhole
- Department of Applied Chemistry, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan, ROC
| | - Indrajeet J Barve
- Department of Applied Chemistry, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan, ROC.,Department of Chemistry, MES Abasaheb Garware College, Pune 411004, Maharashtra, India
| | - Chung-Ming Sun
- Department of Applied Chemistry, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan, ROC.,Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, 100, Shih-Chuan 1st Road, Kaohsiung 807-08, Taiwan, ROC
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9
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Li J, Liu C, Zhao Z, Wang X, Chen D, Yue K, Chen S, Jin M, Shan Y. Halogen cation-promoted and solvent-regulated electrophilic cyclization for the regioselective synthesis of 3-haloquinolines and 3-halospirocyclohexadienones. Org Biomol Chem 2023; 21:2440-2446. [PMID: 36876461 DOI: 10.1039/d3ob00168g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
A novel approach for the production of halogen cations through the reaction of halogens with silver ions is described in this paper. On this basis, the regioselective synthesis of 3-haloquinolines and 3-halospirocyclohexadienones is realized through solvent regulation. The gram-scale reaction and the compatibility of complex substrates demonstrate the synthetic potential of this protocol, which will be an appealing strategy in organic synthesis.
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Affiliation(s)
- Jianming Li
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Chengxiao Liu
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Zihan Zhao
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Xin Wang
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Dianpeng Chen
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Kaiyuan Yue
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Sihan Chen
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Ming Jin
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Yingying Shan
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
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10
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De S, Chowdhury C. Substrate-Controlled Product Divergence in Iron(III)-Catalyzed Reactions of Propargylic Alcohols: Easy Access to Spiro-indenyl 1,4-Benzoxazines and 2-(2,2-Diarylvinyl)quinoxalines. Chemistry 2023; 29:e202203993. [PMID: 36651187 DOI: 10.1002/chem.202203993] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/17/2023] [Accepted: 01/17/2023] [Indexed: 01/19/2023]
Abstract
We report herein unprecedented cascade reactions of O-propargyl-N-tosyl-amino phenols with 10 mol% FeCl3 in DCE at room temperature for 0.67-3 h to form spiro-indenyl 1,4-benzoxazines with 38-89 % yield. Replacing the substrates' oxygen atom by a N-tosylimine group followed by treatment with the same catalyst and solvent at 80 °C produced 2-(2,2-diarylvinyl)quinoxalines in 12-20 h with up to 62 % yield. Mechanistic understanding provided an insight into the transformations. The use of simple substrates and an environmentally benign low-cost catalyst, broad substrate scope and tolerance of diverse functional groups makes the methodology inherently attractive.
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Affiliation(s)
- Sukanya De
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Kolkata, 700032, India
| | - Chinmay Chowdhury
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Kolkata, 700032, India
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11
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Borah B, Patat M, Singh V, Sivaprakash M, Prasad MS, Chowhan LR. Visible-light-induced organophotocatalytic and singlet oxygen-initiated domino construction of 1,4-dihydropyridines, C-3 functionalized spiro[indoline-3,4'-pyridines] and C-11 functionalized spiro[indeno-[1,2- b]quinoxaline-11,4'-pyridines]. Org Biomol Chem 2023; 21:1518-1530. [PMID: 36695344 DOI: 10.1039/d3ob00043e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A highly efficient pot, atom, and step economical method for the construction of pharmacologically potent structurally functionalized 1,4-dihydropyridines, quaternary centered C-3 functionalized spiro[indoline-3,4'-pyridines], and C-11 functionalized spiro[indeno[1,2-b]quinoxaline-11,4'-pyridines] via rose bengal photoredox catalysis under blue LED irradiation in an aqueous medium at room temperature has been developed. The products were isolated in excellent yields within a short reaction time for a variety of functional groups under transition metal- and ligand-free energy-efficient conditions in a green solvent system with high reaction mass efficiency and process mass intensity, which are the key advantages of the current work.
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Affiliation(s)
- Biplob Borah
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat, Gandhinagar-382030, India.
| | - Mihir Patat
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat, Gandhinagar-382030, India.
| | - Vipin Singh
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat, Gandhinagar-382030, India.
| | - Murugesan Sivaprakash
- Asymmetric Synthesis and Catalysis Laboratory, Department of Chemistry, Central University of Tamil Nadu (CUTN), Tiruvarur-610 005, India
| | - Madavi S Prasad
- Asymmetric Synthesis and Catalysis Laboratory, Department of Chemistry, Central University of Tamil Nadu (CUTN), Tiruvarur-610 005, India
| | - L Raju Chowhan
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat, Gandhinagar-382030, India.
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12
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Azpilcueta-Nicolas CR, Meng D, Edelmann S, Lumb JP. Dearomatization of Biaryls through Polarity Mismatched Radical Spirocyclization. Angew Chem Int Ed Engl 2023; 62:e202215422. [PMID: 36454656 DOI: 10.1002/anie.202215422] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/21/2022] [Accepted: 12/01/2022] [Indexed: 12/03/2022]
Abstract
Dearomatization reactions involving radical cyclizations can facilitate the synthesis of complex polycyclic systems that find applications in medicinal chemistry and natural product synthesis. Here we employ redox-neutral photocatalysis to affect a radical spirocyclization that transforms biaryls into spirocyclic cyclohexadienones under mild reaction conditions. In a departure from previously reported methods, our work demonstrates the polarity mismatched addition of a nucleophilic radical to an electron rich arene, and allows the regioselective synthesis of 2,4- or 2,5-cyclohexadienones with broad functional group tolerance. By transforming biaryls into spirocycles, our methodology accesses underexplored three-dimensional chemical space, and provides an efficient means of creating quaternary spirocenters that we apply to the first synthesis of the cytotoxic plant metabolite denobilone A.
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Affiliation(s)
| | - Derek Meng
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
| | - Simon Edelmann
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
| | - Jean-Philip Lumb
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
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13
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Grigalunas M, Patil S, Krzyzanowski A, Pahl A, Flegel J, Schölermann B, Xie J, Sievers S, Ziegler S, Waldmann H. Unprecedented Combination of Polyketide Natural Product Fragments Identifies the New Hedgehog Signaling Pathway Inhibitor Grismonone. Chemistry 2022; 28:e202202164. [PMID: 36083197 PMCID: PMC10091983 DOI: 10.1002/chem.202202164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Indexed: 11/09/2022]
Abstract
Pseudo-natural products (pseudo-NPs) are de novo combinations of natural product (NP) fragments that define novel bioactive chemotypes. For their discovery, new design principles are being sought. Previously, pseudo-NPs were synthesized by the combination of fragments originating from biosynthetically unrelated NPs to guarantee structural novelty and novel bioactivity. We report the combination of fragments from biosynthetically related NPs in novel arrangements to yield a novel chemotype with activity not shared by the guiding fragments. We describe the synthesis of the polyketide pseudo-NP grismonone and identify it as a structurally novel and potent inhibitor of Hedgehog signaling. The insight that the de novo combination of fragments derived from biosynthetically related NPs may also yield new biologically relevant compound classes with unexpected bioactivity may be considered a chemical extension or diversion of existing biosynthetic pathways and greatly expands the opportunities for exploration of biologically relevant chemical space by means of the pseudo-NP principle.
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Affiliation(s)
- Michael Grigalunas
- Max Planck Institute of Molecular PhysiologyDepartment of Chemical BiologyDortmund44227Germany
| | - Sohan Patil
- Max Planck Institute of Molecular PhysiologyDepartment of Chemical BiologyDortmund44227Germany
| | - Adrian Krzyzanowski
- Max Planck Institute of Molecular PhysiologyDepartment of Chemical BiologyDortmund44227Germany
- Technical University DortmundFaculty of ChemistryChemical BiologyDortmund44227Germany
| | - Axel Pahl
- Max Planck Institute of Molecular PhysiologyDepartment of Chemical BiologyDortmund44227Germany
- Compound Management and Screening CenterDortmund44227Germany
| | - Jana Flegel
- Max Planck Institute of Molecular PhysiologyDepartment of Chemical BiologyDortmund44227Germany
| | - Beate Schölermann
- Max Planck Institute of Molecular PhysiologyDepartment of Chemical BiologyDortmund44227Germany
| | - Jianing Xie
- Max Planck Institute of Molecular PhysiologyDepartment of Chemical BiologyDortmund44227Germany
| | - Sonja Sievers
- Max Planck Institute of Molecular PhysiologyDepartment of Chemical BiologyDortmund44227Germany
- Compound Management and Screening CenterDortmund44227Germany
| | - Slava Ziegler
- Max Planck Institute of Molecular PhysiologyDepartment of Chemical BiologyDortmund44227Germany
| | - Herbert Waldmann
- Max Planck Institute of Molecular PhysiologyDepartment of Chemical BiologyDortmund44227Germany
- Technical University DortmundFaculty of ChemistryChemical BiologyDortmund44227Germany
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14
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Cihan-Üstündağ G, Acar Ç, Naesens L, Erköse-Genç G, Şatana D. Synthesis of new N-(3-oxo-1-thia-4-azaspiro[4.5]decan-4-yl)pyridine-3-carboxamide derivatives and evaluation of their anti-influenza virus and antitubercular activities. Arch Pharm (Weinheim) 2022; 355:e2200224. [PMID: 35849096 DOI: 10.1002/ardp.202200224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 06/21/2022] [Accepted: 06/24/2022] [Indexed: 11/09/2022]
Abstract
We here report the synthesis, structural characterization, and evaluation of the antiviral and antitubercular activities of a novel series of hybrid spirothiazolidinone derivatives (2a-f and 3a-f) containing the nicotinohydrazide moiety, which is an isomer form of the approved antitubercular drug isoniazid. When evaluated for activity against influenza A/H1N1, A/H3N2, and B viruses, three of the new compounds proved to possess specific antiviral activity against the influenza A/H3N2 virus. The most active analog 3a, bearing a 2,8-dimethyl group at the spiro ring, displayed an antiviral EC50 value of 5.2 µM. Compound 3a produced no cytotoxicity at 100 µM, the highest concentration tested, giving a selectivity index of at least 19. Structure-activity relationship analysis indicated that the absence of the methyl substituent at the 2-position and the presence of a bulky substituent at the 8-position of the spirothiazolidinone system caused a significant decrease in antiviral activity. The in vitro antitubercular activity of compounds 2a-f and 3a-f was determined for six different drug-sensitive/drug-resistant laboratory strains and clinical isolates of Mycobacterium tuberculosis. Compounds 2c, 2d, 3b, 3c, and 3d showed weak antitubercular activity against different strains, with MIC values of 125-250 μM.
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Affiliation(s)
- Gökçe Cihan-Üstündağ
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Istanbul University, Istanbul, Turkey
| | - Çiğdem Acar
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Istanbul University, Istanbul, Turkey
| | - Lieve Naesens
- Department of Microbiology, Immunology, and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Gonca Erköse-Genç
- Department of Microbiology and Clinical Microbiology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Dilek Şatana
- Department of Microbiology and Clinical Microbiology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
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15
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Multicomponent Electrocatalytic Selective Approach to Unsymmetrical Spiro[furo[3,2-c]pyran-2,5′-pyrimidine] Scaffold under a Column Chromatography-Free Protocol at Room Temperature. CHEMISTRY 2022. [DOI: 10.3390/chemistry4020044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Electrochemical synthesis suggested a mild, green and atom-efficient route to interesting and useful molecules, thus avoiding harsh chemical oxidizing and reducing agents used in traditional synthetic methods. Organic electrochemistry offers an excellent alternative to conventional methods of organic synthesis and creates a modern tool for carrying out organic synthesis, including cascade and multicomponent ones. In this research, a novel electrocatalytic multicomponent transformation was found: the electrochemical multicomponent assembly of arylaldehydes, N,N′-dimethylbarbituric acid and 4-hydroxy-6-methyl-2H-pyran-2-one in one pot reaction was carried out in alcohols in an undivided cell in the presence of alkali metal halides with the selective formation of substituted unsymmetrical 1′,3′,6-trimethyl-3-aryl-2′H,3H,4H-spiro[furo[3,2-c]pyran-2,5′-pyrimidine]-2′,4,4′,6′(1′H,3′H)-tetraones in 73–82% yields. This new electrocatalytic process is a selective, facile and efficient way to obtain spiro[furo[3,2-c]pyran-2,5′-pyrimidines]. According to screening molecular docking data using a self-made Python script in Flare, all synthesized compounds may be prominent for different medical applications, such as breast cancer, neurodegenerative diseases and treatments connected with urinary tract, bones and the cardiovascular system.
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16
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Hu Y, Zhang S, Yu X, Feng X, Yamaguchi M, Bao M. Spirocarbocycle Synthesis from Chloromethylarenes via Transition-Metal-Catalyzed Allylative Dearomatization and Ring Closure Metathesis. J Org Chem 2022; 87:8229-8236. [PMID: 35658456 DOI: 10.1021/acs.joc.2c00651] [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 strategy for the synthesis of spirocarbocycles by using chloromethyl arenes as starting materials is described in this paper. The palladium-catalyzed allylative dearomatization and the subsequent ruthenium-catalyzed ring closure metathesis proceeded smoothly under mild conditions to produce the corresponding spirocarbocycle products with moderate to high yields. Benzene-ring-, naphthalene-ring-, and anthracene-ring-containing substrates can be easily transformed into spirocarbocycles by using the proposed method.
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Affiliation(s)
- Yanzhao Hu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Sheng Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Xiaoqiang Yu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Xiujuan Feng
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Masahiko Yamaguchi
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China.,Department of Organic Chemistry, Graduate School of Pharmaceutical Science, Tohoku University, Sendai 980-8578, Japan
| | - Ming Bao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
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17
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Design and synthesis of amino acid derivatives containing hydantoin and thiazolidine moieties. J CHEM SCI 2022. [DOI: 10.1007/s12039-022-02053-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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18
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Krasavin M, Peshkov AA, Makhmet A, Bakulina O, Kanov E, Gainetdinov R, Peshkov VA, Dar’in D. A General Approach to Spirocyclic Piperidines via Castagnoli–Cushman Chemistry. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/s-0040-1719878] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractUnsaturated spirocyclic lactams stemming from a variant of the three-component Castagnoli–Cushman reaction successfully underwent hydrogenation to enable access to fully saturated spirocyclic lactams. The subsequent lactam reduction gave rise to 2-spiro piperidine building blocks. The latter can be further elaborated in compound libraries and, on their own, show propensity to activate trace amine-associated receptor 1 (TAAR1), an important target for CNS disease.
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Affiliation(s)
- Mikhail Krasavin
- Institute of Chemistry, Saint Petersburg State University
- Immanuel Kant Baltic Federal University
| | | | - Azat Makhmet
- Institute of Chemistry, Saint Petersburg State University
- L. N. Gumilyov Eurasian National University, Department of Chemistry, Faculty of Natural Sciences
| | - Olga Bakulina
- Institute of Chemistry, Saint Petersburg State University
| | - Evgeny Kanov
- Institute of Translational Biomedicine, St. Petersburg State University
| | - Raul Gainetdinov
- Institute of Translational Biomedicine, St. Petersburg State University
| | - Vsevolod A. Peshkov
- Nazarbayev University, Department of Chemistry, School of Sciences and Humanities
| | - Dmitry Dar’in
- Institute of Chemistry, Saint Petersburg State University
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19
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Inprung N, Ho HE, Rossi-Ashton JA, Epton RG, Whitwood AC, Lynam JM, Taylor RJK, James MJ, Unsworth WP. Indole-ynones as Privileged Substrates for Radical Dearomatizing Spirocyclization Cascades. Org Lett 2022; 24:668-674. [PMID: 34985297 DOI: 10.1021/acs.orglett.1c04098] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Indole-ynones have been established as general substrates for radical dearomatizing spirocyclization cascade reactions. Five distinct and varied synthetic protocols have been developed─cyanomethylation, sulfonylation, trifluoromethylation, stannylation and borylation─using a variety of radical generation modes, ranging from photoredox catalysis to traditional AIBN methods. The simple and easily prepared indole-ynones can be used to rapidly generate diverse, densely functionalized spirocycles and have the potential to become routinely used to explore radical reactivity. Experimental and computational investigations support the proposed radical cascade mechanism and suggest that other new methods are now primed for development.
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Affiliation(s)
- Nantachai Inprung
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, U.K
| | - Hon Eong Ho
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, U.K
| | | | - Ryan G Epton
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, U.K
| | - Adrian C Whitwood
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, U.K
| | - Jason M Lynam
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, U.K
| | - Richard J K Taylor
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, U.K
| | - Michael J James
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, U.K
| | - William P Unsworth
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, U.K
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20
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Olifir OS, Chernykh AV, Dobrydnev AV, Grygorenko OO, Moroz YS, Voitenko ZV, Radchenko DS. Multigram Synthesis of Advanced 6,6-Difluorospiro[3.3]heptane-derived Building Blocks. European J Org Chem 2021; 2021:6541-6550. [PMID: 35095338 PMCID: PMC8791643 DOI: 10.1002/ejoc.202000432] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Indexed: 01/21/2024]
Abstract
A convenient methodology for constructing 6,6-difluorospiro[3.3]heptane scaffold - a conformationally restricted isostere of gem-difluorocycloalkanes - is developed. Alarge array of novel 2-mono- and 2,2-bifunctionalized difluorospiro[3.3]heptane building blocks was obtained through the convergent synthesis strategy using a common synthetic precursor - 1,1-bis(bromomethyl)-3,3-difluorocyclobutane. The target compounds and intermediates were prepared by short reaction sequences (6-10 steps) on multigram scale (up to 0.47 kg).
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Affiliation(s)
- Oleksandr S Olifir
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Anton V Chernykh
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine
| | - Alexey V Dobrydnev
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Oleksandr O Grygorenko
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Yuriy S Moroz
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
- Chemspace, Ilukstes iela 38-5, Riga, LV-1082, Latvia
| | - Zoia V Voitenko
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Dmytro S Radchenko
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine
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21
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Malashchuk A, Chernykh AV, Perebyinis MY, Komarov IV, Grygorenko OO. Monoprotected Diamines Derived from 1,5‐Disubstituted (Aza)spiro[2.3]hexane Scaffolds. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001614] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Andrii Malashchuk
- Enamine Ltd. Chervonotkatska Street 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
| | | | - Mariana Y. Perebyinis
- Enamine Ltd. Chervonotkatska Street 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
| | - Igor V. Komarov
- Enamine Ltd. Chervonotkatska Street 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
| | - Oleksandr O. Grygorenko
- Enamine Ltd. Chervonotkatska Street 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
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22
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Soklou KE, Marzag H, Vallée B, Routier S, Plé K. Synthesis of Heterospirocycles through Gold‐(I) Catalysis: Useful Building Blocks for Medicinal Chemistry. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202101080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Kossi Efouako Soklou
- Institut de Chimie Organique et Analytique University of Orléans, CNRS UMR 7311 45067 Orléans Cedex 2 France
| | - Hamid Marzag
- Institut de Chimie Organique et Analytique University of Orléans, CNRS UMR 7311 45067 Orléans Cedex 2 France
| | - Béatrice Vallée
- Centre de Biophysique Moléculaire, CNRS, UPR 4301 University of Orléans and INSERM 45071 Orléans Cedex 2 France
| | - Sylvain Routier
- Institut de Chimie Organique et Analytique University of Orléans, CNRS UMR 7311 45067 Orléans Cedex 2 France
| | - Karen Plé
- Institut de Chimie Organique et Analytique University of Orléans, CNRS UMR 7311 45067 Orléans Cedex 2 France
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23
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Li L, Liu T, Zhang X, Hou X, Dong H, Li X, Ren W, Wang Y. Catalyst-free and atom-economical 1,3-dipolar cycloaddition of C,N-cyclic azomethine imines: Facile synthesis of isoquinoline-fused spirocycles. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.11.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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24
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Abstract
![]()
We present a strategy for the synthesis
of spirocyclic cyclobutanes
with modulable exit vectors based on the regioselective monoborylation
of spirocyclobutenes. Using an inexpensive copper salt and a commercially
available bidentate phosphine, a broad variety of borylated spirocycles
have been prepared with complete regiocontrol. The boryl moiety provides
a synthetic handled for further functionalization, allowing access
to a wide array of spirocyclic building blocks from a common intermediate.
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Affiliation(s)
- Luis Nóvoa
- Departamento de Química Orgánica and Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - Laura Trulli
- Departamento de Química Orgánica and Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - Israel Fernández
- Departamento de Química Orgánica I y Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Alejandro Parra
- Departamento de Química Orgánica and Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - Mariola Tortosa
- Departamento de Química Orgánica and Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid 28049, Spain
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25
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Direct access to spirocycles by Pd/WingPhos-catalyzed enantioselective cycloaddition of 1,3-enynes. Nat Commun 2021; 12:5667. [PMID: 34580311 PMCID: PMC8476582 DOI: 10.1038/s41467-021-25981-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 09/10/2021] [Indexed: 11/17/2022] Open
Abstract
Spirocycles play an important role in drug discovery and development. The direct, catalytic, and enantioselective synthesis of spirocycles from readily available starting materials and in an atom economic manner remains a highly sought-after task in organic synthesis. Herein, an enantioselective Pd-hydride-catalyzed cycloaddition method for the synthesis of spirocyclic compounds directly from two classes of commonly available starting materials, 1,3-enynes and cyclic carbon−hydrogen (C−H) bonds, is reported. The reactions employ a chiral Pd/WingPhos catalyst to both suppress the formation of bis-allenyl by-products and control the stereoselectivity. 1,3-Enynes are used as dielectrophilic four-carbon units in the cycloaddition reactions, which also enables an enyne substrate-directed enantioselectivity switch with good levels of stereocontrol. The present spirocycle synthesis tolerates a broad range of functional groups of 1,3-enyne substrates, including alcohols, esters, nitriles, halides, and olefins. A variety of diverse cyclic nucleophiles, including pharmaceutically important heterocycles and carbocycles, can be flexibly incorporated with spiro scaffolds. Spirocycles are traditionally difficult structures to synthesize due to the congested nature of the central atom. Here the authors show a method to synthesize quaternary carbon spirocycles in one step from 1,3-enynes and pyrazolidine-type heterocycles, both relatively unactivated structures, proceeding via palladium catalysis.
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26
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Malashchuk A, Chernykh AV, Dobrydnev AV, Grygorenko OO. Fluorine‐Labelled Spiro[3.3]heptane‐Derived Building Blocks: Is Single Fluorine the Best? European J Org Chem 2021. [DOI: 10.1002/ejoc.202100804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Andrii Malashchuk
- Enamine Ltd. Chervonotkatska Street 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
| | - Anton V. Chernykh
- Enamine Ltd. Chervonotkatska Street 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
| | - Alexey V. Dobrydnev
- Enamine Ltd. Chervonotkatska Street 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
| | - Oleksandr O. Grygorenko
- Enamine Ltd. Chervonotkatska Street 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
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27
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Fominova K, Diachuk T, Granat D, Savchuk T, Vilchynskyi V, Svitlychnyi O, Meliantsev V, Kovalchuk I, Litskan E, Levterov VV, Badlo VR, Vaskevych RI, Vaskevych AI, Bolbut AV, Semeno VV, Iminov R, Shvydenko K, Kuznetsova AS, Dmytriv YV, Vysochyn D, Ripenko V, Tolmachev AA, Pavlova O, Kuznietsova H, Pishel I, Borysko P, Mykhailiuk PK. Oxa-spirocycles: synthesis, properties and applications. Chem Sci 2021; 12:11294-11305. [PMID: 34667540 PMCID: PMC8447932 DOI: 10.1039/d1sc03615g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 07/20/2021] [Indexed: 12/27/2022] Open
Abstract
A general approach to a new generation of spirocyclic molecules – oxa-spirocycles – was developed. The key synthetic step was iodocyclization. More than 150 oxa-spirocyclic compounds were prepared. Incorporation of an oxygen atom into the spirocyclic unit dramatically improved water solubility (by up to 40 times) and lowered lipophilicity. More potent oxa-spirocyclic analogues of antihypertensive drug terazosin were synthesized and studied in vivo. A general practical approach to a new generation of spirocyclic molecules – oxa-spirocycles – is developed.![]()
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Affiliation(s)
- Kateryna Fominova
- Enamine Ltd Chervonotkatska 78 02094 Kyiv Ukraine http://www.enamine.net http://www.mykhailiukchem.org
| | - Taras Diachuk
- Enamine Ltd Chervonotkatska 78 02094 Kyiv Ukraine http://www.enamine.net http://www.mykhailiukchem.org
| | - Dmitry Granat
- Enamine Ltd Chervonotkatska 78 02094 Kyiv Ukraine http://www.enamine.net http://www.mykhailiukchem.org
| | - Taras Savchuk
- Enamine Ltd Chervonotkatska 78 02094 Kyiv Ukraine http://www.enamine.net http://www.mykhailiukchem.org
| | - Vladyslav Vilchynskyi
- Enamine Ltd Chervonotkatska 78 02094 Kyiv Ukraine http://www.enamine.net http://www.mykhailiukchem.org
| | - Oleksiy Svitlychnyi
- Enamine Ltd Chervonotkatska 78 02094 Kyiv Ukraine http://www.enamine.net http://www.mykhailiukchem.org
| | - Vladyslav Meliantsev
- Enamine Ltd Chervonotkatska 78 02094 Kyiv Ukraine http://www.enamine.net http://www.mykhailiukchem.org
| | - Igor Kovalchuk
- Enamine Ltd Chervonotkatska 78 02094 Kyiv Ukraine http://www.enamine.net http://www.mykhailiukchem.org
| | - Eduard Litskan
- Enamine Ltd Chervonotkatska 78 02094 Kyiv Ukraine http://www.enamine.net http://www.mykhailiukchem.org
| | - Vadym V Levterov
- Enamine Ltd Chervonotkatska 78 02094 Kyiv Ukraine http://www.enamine.net http://www.mykhailiukchem.org
| | - Valentyn R Badlo
- Enamine Ltd Chervonotkatska 78 02094 Kyiv Ukraine http://www.enamine.net http://www.mykhailiukchem.org
| | - Ruslan I Vaskevych
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine Murmanska St. 5 02094 Kyiv Ukraine
| | - Alla I Vaskevych
- National Technical University of Ukraine, Igor Sikorsky Kiev Polytechnic Institute Prosp. Peremohy 37 03056 Kyiv Ukraine
| | - Andrii V Bolbut
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine Murmanska St. 5 02094 Kyiv Ukraine
| | - Volodymyr V Semeno
- Enamine Ltd Chervonotkatska 78 02094 Kyiv Ukraine http://www.enamine.net http://www.mykhailiukchem.org
| | - Rustam Iminov
- Enamine Ltd Chervonotkatska 78 02094 Kyiv Ukraine http://www.enamine.net http://www.mykhailiukchem.org
| | - Kostiantyn Shvydenko
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine Murmanska St. 5 02094 Kyiv Ukraine
| | | | - Yurii V Dmytriv
- Enamine Ltd Chervonotkatska 78 02094 Kyiv Ukraine http://www.enamine.net http://www.mykhailiukchem.org.,National Technical University of Ukraine, Igor Sikorsky Kiev Polytechnic Institute Prosp. Peremohy 37 03056 Kyiv Ukraine
| | - Daniil Vysochyn
- Enamine Ltd Chervonotkatska 78 02094 Kyiv Ukraine http://www.enamine.net http://www.mykhailiukchem.org
| | - Vasyl Ripenko
- Enamine Ltd Chervonotkatska 78 02094 Kyiv Ukraine http://www.enamine.net http://www.mykhailiukchem.org
| | - Andrei A Tolmachev
- Enamine Ltd Chervonotkatska 78 02094 Kyiv Ukraine http://www.enamine.net http://www.mykhailiukchem.org
| | | | | | - Iryna Pishel
- Bienta Chervonotkatska 78 02094 Kyiv Ukraine http://www.bienta.net
| | - Petro Borysko
- Bienta Chervonotkatska 78 02094 Kyiv Ukraine http://www.bienta.net
| | - Pavel K Mykhailiuk
- Enamine Ltd Chervonotkatska 78 02094 Kyiv Ukraine http://www.enamine.net http://www.mykhailiukchem.org
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28
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Pipim GB, Tia R, Adei E. Quantum chemical investigation of the formation of spiroheterocyclic compounds via the (3 + 2) cycloaddition reaction of 1-methyl-3-(2,2,2-trifluoroethylidene) pyrrolidin-2-one with diazomethane and nitrone derivatives. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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29
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Chen L, Geng HY, Chen ZJ, Liang W, Jiao WY. Rapid entry to bispiro heterocycles merging five pharmacophores using phase-transfer catalysis. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153276] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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30
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Sulfide‐Catalyzed Diastereoselective Spirocyclopropanation: Constructing Spiro‐cyclopropanyl‐pyrazolones From α‐Arylidenepyrazolones. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100232] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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31
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Hügel HM, de Silva NH, Siddiqui A, Blanch E, Lingham A. Natural spirocyclic alkaloids and polyphenols as multi target dementia leads. Bioorg Med Chem 2021; 43:116270. [PMID: 34153839 DOI: 10.1016/j.bmc.2021.116270] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/25/2021] [Accepted: 06/04/2021] [Indexed: 01/03/2023]
Abstract
The U rhynchophylla, U tomentosa, Isatis indigotica Fortune, Voacanga Africana, herbal constituents, fungal extracts from Aspergillus duricaulis culture media, include spirooxindoles, polyphenols or bridged spirocyclic alkaloids. Their constituents exhibit specific and synergistic multiple neuroprotective properties including inhibiting of Aβ fibril induced cytotoxicity, NMDA receptor inhibition in mice models of Alzheimer's disease (AD). The pioneering research from Woodward to Waldmann has advanced the synthesis of spirocyclic alkaloids. Furthermore, the elucidation of the genetic analysis, biochemical pathways that links strictosidine to the alkaloids akuammicine, stemmadenine, tabersonine, catharanthine, will now enable the biotechnological generation, also stimulate synthesis of related bridged spirocyclic alkaloids for medicinal investigations. From the value of spirocyclic structures as multi target dementia leads, we hypothesise that simpler Lipinski-like natural/synthetic alkaloid analogues may likewise be discovered that provide neurocognitive enhancing activities against dementia and AD.
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Affiliation(s)
- Helmut M Hügel
- Applied Chemistry & Environmental Science, School of Science, RMIT University, GPO Box 2476, Melbourne, VIC 3001, Australia.
| | - Nilamuni H de Silva
- Applied Chemistry & Environmental Science, School of Science, RMIT University, GPO Box 2476, Melbourne, VIC 3001, Australia
| | - Aimen Siddiqui
- Applied Chemistry & Environmental Science, School of Science, RMIT University, GPO Box 2476, Melbourne, VIC 3001, Australia
| | - Ewan Blanch
- Applied Chemistry & Environmental Science, School of Science, RMIT University, GPO Box 2476, Melbourne, VIC 3001, Australia
| | - Anthony Lingham
- Applied Chemistry & Environmental Science, School of Science, RMIT University, GPO Box 2476, Melbourne, VIC 3001, Australia
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32
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Li H, Su M, Nie Z, Yang T, Luo W, Liu Q, Guo C. Effective [3+1+1+1] Cycloaddition to Six‐Membered Carbocycle Based on DMSO as Dual Carbon Synthon. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100115] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hui Li
- College of Chemistry and Chemical Engineering Hunan University Changsha 410082 People's Republic of China
| | - Miaodong Su
- College of Chemistry and Chemical Engineering Hunan University Changsha 410082 People's Republic of China
| | - Zhiwen Nie
- College of Chemistry and Chemical Engineering Hunan University Changsha 410082 People's Republic of China
| | - Tonglin Yang
- College of Chemistry and Chemical Engineering Hunan University Changsha 410082 People's Republic of China
| | - Weiping Luo
- College of Chemistry and Chemical Engineering Hunan University Changsha 410082 People's Republic of China
| | - Qiang Liu
- College of Chemistry and Chemical Engineering Hunan University Changsha 410082 People's Republic of China
| | - Cancheng Guo
- College of Chemistry and Chemical Engineering Hunan University Changsha 410082 People's Republic of China
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33
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Narula D, Bari SS, Yadav P, Khullar S, Mandal SK, Kaur G, Chaudhary GR, Bhalla A. Synthesis of α‐Heterocycle Anchored Spirocyclic Azetidin‐2‐ones in a Minute by
p
‐TSA Catalyzed Cyclocondensation of Azetidin‐2,3‐diones with Difunctionalized Substrates. ChemistrySelect 2021. [DOI: 10.1002/slct.202101104] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Dipika Narula
- Department of Chemistry and Centre of Advanced Studies in Chemistry Panjab University Chandigarh 160014 India
| | - Shamsher S. Bari
- Department of Chemistry and Centre of Advanced Studies in Chemistry Panjab University Chandigarh 160014 India
| | - Pooja Yadav
- Department of Chemistry and Centre of Advanced Studies in Chemistry Panjab University Chandigarh 160014 India
| | - Sadhika Khullar
- Department of Chemistry Dr. B. R. Ambedkar National Institute of Technology Jalandhar 144011, Punjab India
| | - Sanjay K. Mandal
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali 140306, Punjab India
| | - Gurpreet Kaur
- Department of Chemistry and Centre of Advanced Studies in Chemistry Panjab University Chandigarh 160014 India
| | - Ganga Ram Chaudhary
- Department of Chemistry and Centre of Advanced Studies in Chemistry Panjab University Chandigarh 160014 India
| | - Aman Bhalla
- Department of Chemistry and Centre of Advanced Studies in Chemistry Panjab University Chandigarh 160014 India
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34
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Fairuz Binte Sheikh Ismail SN, Yang B, Zhao Y. Access to 5,6-Spirocycles Bearing Three Contiguous Stereocenters via Pd-Catalyzed Stereoselective [4 + 2] Cycloaddition of Azadienes. Org Lett 2021; 23:2884-2889. [PMID: 33769066 DOI: 10.1021/acs.orglett.1c00505] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
We present herein a highly diastereo- and enantioselective Pd-catalyzed [4 + 2] cycloaddition of benzofuran-derived azadienes with vinyl benzoxazinanones, which represents a rare highly stereoselective cycloaddition of this class of fused azadienes as a two-atom synthon. The use of a phosphoramidite ligand bearing a chiral secondary amine with a simple biphenyl backbone proved to be the key to construct the novel spirocyclic tetrahydroquinoline scaffold containing three contiguous stereocenters as a single diastereomer in high enantioselectivity.
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Affiliation(s)
| | - Binmiao Yang
- Department of Chemistry, National University of Singapore, 4 Science Drive 2, Singapore 117544, Republic of Singapore
| | - Yu Zhao
- Department of Chemistry, National University of Singapore, 4 Science Drive 2, Singapore 117544, Republic of Singapore.,Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China
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35
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Hayrapetyan D, Stepanova V. Facile Synthesis of Spirocyclic Lactams via [3+2] and [3+3] Aza‐Annulation Reactions. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Davit Hayrapetyan
- Department of Chemistry School of Sciences and Humanities Nazarbayev University 53 Kabanbay Batyr Ave. 010000 Nur-Sultan Kazakhstan
| | - Valeriya Stepanova
- Department of Chemistry School of Sciences and Humanities Nazarbayev University 53 Kabanbay Batyr Ave. 010000 Nur-Sultan Kazakhstan
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36
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Chaisan N, Ruengsangtongkul S, Tummatorn J, Ruchirawat S, Chainok K, Thongsornkleeb C. Dibrominative Spirocyclization of 2-Butynolyl Anilides: Synthesis of gem-Dibromospirocyclic Benzo[ d][1,3]oxazines and Their Application in the Synthesis of 4 H-Furo[3,2- b]indoles. J Org Chem 2021; 86:4671-4698. [PMID: 33689323 DOI: 10.1021/acs.joc.1c00086] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The combination of catalytic aqueous hydrochloric acid (HCl) and N-bromosuccinimide (NBS) generated electrophilic bromine monochloride (BrCl), which readily induced spiroannulation of 2-alkynolyl anilides (n = 1-3) to form gem-dibromospirocyclic benzo[d][1,3]oxazines in up to 92% yield. The reaction occurred under mild and metal-free conditions using EtOAc as a green solvent. The resulted spirocyclic products contained benzo[d][1,3]oxazine, which was useful both as a pharmacophore and synthetic precursor. In addition, the current protocol allowed to effortlessly introduce the sp3-gem-dibromide carbon adjacent to the sterically demanding spiroketal center. These spiroheterocycles (n = 1) were shown to be synthetically versatile and conveniently maneuvered. Base-promoted debrominative aromatization of these spirocycles unmasked rare and synthetically useful 2-aryl-3-bromofurans in mostly excellent yields. These 3-bromofurans were well-suited substrates for intramolecular Ullmann C-N bond coupling to construct difficult-to-prepare 4H-furo[3,2-b]indoles. Additionally, the current protocol was flexible and adaptable to preparing the gem-dichloride variants.
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Affiliation(s)
- Nattawadee Chaisan
- Program on Chemical Biology, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Sureeporn Ruengsangtongkul
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Jumreang Tummatorn
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand.,Program on Chemical Biology, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Somsak Ruchirawat
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand.,Program on Chemical Biology, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Kittipong Chainok
- Thammasat University Research Unit in Multifunctional Crystalline Materials and Applications (TU-MCMA), Faculty of Science and Technology, Thammasat University, Pathum Thani 12121, Thailand
| | - Charnsak Thongsornkleeb
- Laboratory of Organic Synthesis, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand.,Program on Chemical Biology, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
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37
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Inprung N, James MJ, Taylor RJK, Unsworth WP. A Thiol-Mediated Three-Step Ring Expansion Cascade for the Conversion of Indoles into Functionalized Quinolines. Org Lett 2021; 23:2063-2068. [PMID: 33645997 PMCID: PMC8041380 DOI: 10.1021/acs.orglett.1c00205] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Indexed: 12/02/2022]
Abstract
An operationally simple, high yielding three-step cascade process is described for the direct conversion of indole-tethered ynones into functionalized quinolines. A single "multitasking" thiol reagent is used to promote a three-step dearomatizing spirocyclization, nucleophilic substitution, and one-atom ring expansion reaction cascade under remarkably mild conditions. In addition, a novel route to thio-oxindoles is described, which was discovered by serendipity.
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Affiliation(s)
- Nantachai Inprung
- Department of Chemistry, University
of York, Heslington, York, U.K.., YO10 5DD
| | - Michael J. James
- Department of Chemistry, University
of York, Heslington, York, U.K.., YO10 5DD
| | | | - William P. Unsworth
- Department of Chemistry, University
of York, Heslington, York, U.K.., YO10 5DD
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38
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McQueen TM, Griggs SD. Efficient synthesis of novel 2-spiropiperidines including an unprecedented non-symmetrical 2,6-bis-spiropiperidine. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2020.152752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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39
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Zorba LP, Vougioukalakis GC. The Ketone-Amine-Alkyne (KA2) coupling reaction: Transition metal-catalyzed synthesis of quaternary propargylamines. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213603] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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40
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Wang X, Liu J, Yan Z, Liu X, Liu S, Suo Y, Lu W, Yue J, Chen K, Jiang H, Zhao Y, Zheng M, Dai D, Lu X. Diversified strategy for the synthesis of DNA-encoded oxindole libraries. Chem Sci 2021; 12:2841-2847. [PMID: 34164048 PMCID: PMC8179416 DOI: 10.1039/d0sc06696f] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
DNA-encoded library technology (DELT) employs DNA as a barcode to track the sequence of chemical reactions and enables the design and synthesis of libraries with billions of small molecules through combinatorial expansion. This powerful technology platform has been successfully demonstrated for hit identification and target validation for many types of diseases. As a highly integrated technology platform, DEL is capable of accelerating the translation of synthetic chemistry by using on-DNA compatible reactions or off-DNA scaffold synthesis. Herein, we report the development of a series of novel on-DNA transformations based on oxindole scaffolds for the design and synthesis of diversity-oriented DNA-encoded libraries for screening. Specifically, we have developed 1,3-dipolar cyclizations, cyclopropanations, ring-opening of reactions of aziridines and Claisen–Schmidt condensations to construct diverse oxindole derivatives. The majority of these transformations enable a diversity-oriented synthesis of DNA-encoded oxindole libraries which have been used in the successful hit identification for three protein targets. We have demonstrated that a diversified strategy for DEL synthesis could accelerate the application of synthetic chemistry for drug discovery. Constructing DNA-encoded oxindole libraries by a diversified strategy.![]()
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Affiliation(s)
- Xuan Wang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 P. R. China .,Amgen Asia R&D Center, Amgen Biopharmaceutical R&D (Shanghai) Co., Ltd. 4560 Jinke Road, Building No. 2, 13th Floor, Pudong Shanghai 201210 P. R. China
| | - Jiaxiang Liu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 P. R. China
| | - Ziqin Yan
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 P. R. China
| | - Xiaohong Liu
- Shanghai Institute for Advanced Immunochemical Studies, School of Life Science and Technology, ShanghaiTech University Pudong Shanghai 201210 P. R. China.,Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 P. R. China.,University of Chinese Academy of Sciences No. 19A Yuquan Road Beijing 100049 P. R. China
| | - Sixiu Liu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 P. R. China
| | - Yanrui Suo
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 P. R. China
| | - Weiwei Lu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 P. R. China
| | - Jinfeng Yue
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 P. R. China
| | - Kaixian Chen
- Shanghai Institute for Advanced Immunochemical Studies, School of Life Science and Technology, ShanghaiTech University Pudong Shanghai 201210 P. R. China.,Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 P. R. China.,University of Chinese Academy of Sciences No. 19A Yuquan Road Beijing 100049 P. R. China
| | - Hualiang Jiang
- Shanghai Institute for Advanced Immunochemical Studies, School of Life Science and Technology, ShanghaiTech University Pudong Shanghai 201210 P. R. China.,Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 P. R. China.,University of Chinese Academy of Sciences No. 19A Yuquan Road Beijing 100049 P. R. China
| | - Yujun Zhao
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 P. R. China
| | - Mingyue Zheng
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 P. R. China.,University of Chinese Academy of Sciences No. 19A Yuquan Road Beijing 100049 P. R. China
| | - Dongcheng Dai
- Amgen Asia R&D Center, Amgen Biopharmaceutical R&D (Shanghai) Co., Ltd. 4560 Jinke Road, Building No. 2, 13th Floor, Pudong Shanghai 201210 P. R. China
| | - Xiaojie Lu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 P. R. China
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41
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de la Cruz-Sánchez P, Pàmies O. Metal-π-allyl mediated asymmetric cycloaddition reactions. ADVANCES IN CATALYSIS 2021. [DOI: 10.1016/bs.acat.2021.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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42
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Sharma P, Ranga Prabhath MR, Wong D, Ampem-Lassen MA, Bhat SV, Williams L, Carvalho TG. Synthesis of Biologically Active Heterospirocycles through Iterative 1,3-Dipolar Cycloaddition Pathways. J Org Chem 2021; 86:1223-1230. [PMID: 33316159 DOI: 10.1021/acs.joc.0c02424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We demonstrate the novel spiroannulation of exo-imines with 1,3-dipoles, for the first time, leading to 3D spirocycles with a secondary amine (NH) in the spiro-ring. The synthetic method described herein allows access to these previously unexplored heterospirocyclic cores that have application in the discovery of functional molecules for medicinal and materials science. This was demonstrated by discovering an unprecedented class of heterospirocycles with antimalarial activity against the human protozoan P. falciparum.
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Affiliation(s)
- Pallavi Sharma
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia.,School of Chemistry, Joseph Bank Laboratory, University of Lincoln, Lincoln LN6 7TS, United Kingdom
| | - M R Ranga Prabhath
- School of Chemistry, Joseph Bank Laboratory, University of Lincoln, Lincoln LN6 7TS, United Kingdom
| | - Derek Wong
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Maame Adjoa Ampem-Lassen
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Shreesha V Bhat
- School of Chemistry, Joseph Bank Laboratory, University of Lincoln, Lincoln LN6 7TS, United Kingdom
| | - Luke Williams
- School of Chemistry, Joseph Bank Laboratory, University of Lincoln, Lincoln LN6 7TS, United Kingdom
| | - Teresa G Carvalho
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Melbourne, Victoria 3086, Australia
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43
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Abstract
This review summaries recent synthetic developments towards spirocyclic oxindoles and applications as valuable medicinal and synthetic targets.
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Affiliation(s)
- Alexander J. Boddy
- Department of Chemistry
- Imperial College London
- Molecular Sciences Research Hub
- London W12 0BZ
- UK
| | - James A. Bull
- Department of Chemistry
- Imperial College London
- Molecular Sciences Research Hub
- London W12 0BZ
- UK
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44
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Abstract
Spirocyclic scaffolds are incorporated in various approved drugs and drug candidates. The increasing interest in less planar bioactive compounds has given rise to the development of synthetic methodologies for the preparation of spirocyclic scaffolds. In this Perspective, we summarize the diverse synthetic routes to obtain spirocyclic systems. The impact of spirocycles on potency and selectivity, including the aspect of stereochemistry, is discussed. Furthermore, we examine the changes in physicochemical properties as well as in in vitro and in vivo ADME using selected studies that compare spirocyclic compounds to their nonspirocyclic counterparts. In conclusion, the value of spirocyclic scaffolds in medicinal chemistry is discussed.
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Affiliation(s)
- Kerstin Hiesinger
- Institute of Pharmaceutical Chemistry, Goethe University, Max-von-Laue Straße 9, D-60348 Frankfurt am Main, Germany
| | - Dmitry Dar'in
- Institute of Chemistry, Saint Petersburg State University, 199034 Saint Petersburg, Russia
| | - Ewgenij Proschak
- Institute of Pharmaceutical Chemistry, Goethe University, Max-von-Laue Straße 9, D-60348 Frankfurt am Main, Germany
| | - Mikhail Krasavin
- Institute of Chemistry, Saint Petersburg State University, 199034 Saint Petersburg, Russia
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45
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Beesu M, Mehta G. Orthogonal Strapping of o-Haloaryl Ynones with Pyrazolones: A One-Pot, Domino Process toward Spiropyrazolones. J Org Chem 2020; 85:14229-14239. [PMID: 33040531 DOI: 10.1021/acs.joc.0c02087] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A new class of spiroannulated pyrazolone scaffolds have been assembled from diverse o-haloaryl ynones and β-bromoalkenyl ynones via base mediated, one-pot, metal free, orthogonal strapping (tethering) mediated by the recursive anion(s) derived from pyrazolones. These convenient, preparatively useful transformations proceed through either a tandem Michael addition-intramolecular SNAr reaction or a tandem Michael addition-intramolecular AdNE process to furnish a range of pharmacophoric, diverse, spiroannulated pyrazolones from readily accessible precursors.
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Affiliation(s)
- Mallesh Beesu
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
| | - Goverdhan Mehta
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
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46
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Brittain WDG, Lloyd CM, Cobb SL. Synthesis of complex unnatural fluorine-containing amino acids. J Fluor Chem 2020; 239:109630. [PMID: 33144742 PMCID: PMC7583769 DOI: 10.1016/j.jfluchem.2020.109630] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 08/12/2020] [Accepted: 08/12/2020] [Indexed: 01/01/2023]
Abstract
The area of fluorinated amino acid synthesis has seen rapid growth over the past decade. As reports of singly fluorinated natural amino acid derivatives have grown, researchers have turned their attention to develop methodology to access complex proteinogenic examples. A variety of reaction conditions have been employed in this area, exploiting new advances in the wider synthetic community such as photocatalysis and palladium cross-coupling. In addition, novel fluorinated functional groups have also been incorporated into amino acids, with SFX and perfluoro moieties now appearing with more frequency in the literature. This review focuses on synthetic methodology for accessing complex non-proteinogenic amino acids, along with amino acids containing multiple fluorine atoms such as CF3, SF5 and perfluoroaromatic groups.
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Affiliation(s)
| | - Carissa M Lloyd
- Department of Chemistry, Durham University, Durham DH1 3LE, United Kingdom
| | - Steven L Cobb
- Department of Chemistry, Durham University, Durham DH1 3LE, United Kingdom
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Safrygin A, Dar'in D, Bakulina O, Krasavin M. Synthesis of spirocyclic tetrahydroisoquinolines (spiroTHIQs) via the Castagnoli-Cushman reaction. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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48
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Talele TT. Opportunities for Tapping into Three-Dimensional Chemical Space through a Quaternary Carbon. J Med Chem 2020; 63:13291-13315. [PMID: 32805118 DOI: 10.1021/acs.jmedchem.0c00829] [Citation(s) in RCA: 144] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A quaternary carbon bears four other carbon substituents or combination of four non-hydrogen substituents at four vertices of a tetrahedron. The spirocyclic quaternary carbon positioned at the center of a bioactive molecule offers conformational rigidity, which in turn reduces the penalty for conformational entropy. The quaternary carbon is a predominant feature of natural product structures and has been associated with more effective and selective binding to target proteins compared to planar compounds with a high sp2 count. The presence of a quaternary carbon stereocenter allows the exploration of novel chemical space to obtain new molecules with enhanced three-dimensionality. These characteristics, coupled to an increasing awareness to develop sp3-rich molecules, boosted utility of quaternary carbon stereocenters in bioactive compounds. It is hoped that this Perspective will inspire the chemist to utilize quaternary carbon stereocenters to enhance potency, selectivity, and other drug-like properties.
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Affiliation(s)
- Tanaji T Talele
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York 11439, United States
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Shennan BDA, Smith PW, Ogura Y, Dixon DJ. A modular and divergent approach to spirocyclic pyrrolidines. Chem Sci 2020; 11:10354-10360. [PMID: 34094297 PMCID: PMC8162384 DOI: 10.1039/d0sc03676e] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 08/06/2020] [Indexed: 12/17/2022] Open
Abstract
An efficient three-step sequence to afford a valuable class of spirocyclic pyrrolidines is reported. A reductive cleavage/Horner-Wadsworth-Emmons cascade facilitates the spirocyclisation of a range of isoxazolines bearing a distal β-ketophosphonate. The spirocyclisation precursors are elaborated in a facile and modular fashion, via a [3 + 2]-cycloaddition followed by the condensation of a phosphonate ester, introducing multiple points of divergence. The synthetic utility of this protocol has been demonstrated in the synthesis of a broad family of 1-azaspiro[4,4]nonanes and in a concise formal synthesis of the natural product (±)-cephalotaxine.
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Affiliation(s)
- Benjamin D A Shennan
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford 12 Mansfield Road Oxford UK
| | - Peter W Smith
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford 12 Mansfield Road Oxford UK
| | - Yusuke Ogura
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford 12 Mansfield Road Oxford UK
| | - Darren J Dixon
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford 12 Mansfield Road Oxford UK
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50
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Soklou KE, Marzag H, Bouillon JP, Marchivie M, Routier S, Plé K. Gold(I)-Catalyzed Intramolecular Hydroamination and Hydroalkoxylation of Alkynes: Access to Original Heterospirocycles. Org Lett 2020; 22:5973-5977. [PMID: 32692567 DOI: 10.1021/acs.orglett.0c02070] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report here a simple and robust gold-catalyzed annulation reaction, giving N- and O-spirocycles in good to excellent yields. We have prepared a library of protected amines and tertiary alcohols that give, upon cyclization with alkynes, a representative set of heterospirocycles and illustrate reaction compatibility with diverse functional groups. A change in catalytic activity is possible by modifying the solvent, and two original tricyclic spirocycles were synthesized in a tandem reaction.
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Affiliation(s)
- Kossi Efouako Soklou
- Institut de Chimie Organique et Analytique, Université d'Orléans, CNRS UMR 7311, 45067 Cedex 2, Orléans, France
| | - Hamid Marzag
- Institut de Chimie Organique et Analytique, Université d'Orléans, CNRS UMR 7311, 45067 Cedex 2, Orléans, France
| | | | | | - Sylvain Routier
- Institut de Chimie Organique et Analytique, Université d'Orléans, CNRS UMR 7311, 45067 Cedex 2, Orléans, France
| | - Karen Plé
- Institut de Chimie Organique et Analytique, Université d'Orléans, CNRS UMR 7311, 45067 Cedex 2, Orléans, France
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