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Shevalev R, Bischof L, Sapegin A, Bunev A, Olga G, Kantin G, Kalinin S, Hartmann MD. Discovery and characterization of potent spiro-isoxazole-based cereblon ligands with a novel binding mode. Eur J Med Chem 2024; 270:116328. [PMID: 38552426 DOI: 10.1016/j.ejmech.2024.116328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 03/05/2024] [Accepted: 03/10/2024] [Indexed: 04/21/2024]
Abstract
The vast majority of current cereblon (CRBN) ligands is based on the thalidomide scaffold, relying on glutarimide as the core binding moiety. With this architecture, most of these ligands inherit the overall binding mode, interactions with neo-substrates, and thereby potentially also the cytotoxic and teratogenic properties of the parent thalidomide. In this work, by incorporating a spiro-linker to the glutarimide moiety, we have generated a new chemotype that exhibits an unprecedented binding mode for glutarimide-based CRBN ligands. In total, 16 spirocyclic glutarimide derivatives incorporating an isoxazole moiety were synthesized and tested for different criteria. In particular, all ligands showed a favorable lipophilicity, and several were able to outperform the binding affinity of thalidomide as a reference. In addition, all compounds showed favorable cytotoxicity profiles in myeloma cell lines and human peripheral blood mononuclear cells. The novel binding mode, which we determined in co-crystal structures, provides explanations for these improved properties: The incorporation of the spiro-isoxazole changes both the conformation of the glutarimide moiety within the canonical tri-trp pocket and the orientation of the protruding moiety. In this new orientation it forms additional hydrophobic interactions and is not available for direct interactions with the canonical neo-substrates. We therefore propose this chemotype as an attractive building block for the design of PROTACs.
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Affiliation(s)
- Robert Shevalev
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia
| | - Luca Bischof
- Department of Protein Evolution, Max Planck Institute for Biology, Tübingen, Germany
| | - Alexander Sapegin
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia
| | - Alexander Bunev
- Medicinal Chemistry Center, Togliatti State University, Togliatti, Russia
| | - Grigor'eva Olga
- Medicinal Chemistry Center, Togliatti State University, Togliatti, Russia
| | - Grigory Kantin
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia
| | - Stanislav Kalinin
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia.
| | - Marcus D Hartmann
- Department of Protein Evolution, Max Planck Institute for Biology, Tübingen, Germany.
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2
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Yanovich A, Vepreva A, Malkova K, Kantin G, Dar’in D. Entry to new spiroheterocycles via tandem Rh(II)-catalyzed O-H insertion/base-promoted cyclization involving diazoarylidene succinimides. Beilstein J Org Chem 2024; 20:561-569. [PMID: 38505240 PMCID: PMC10949003 DOI: 10.3762/bjoc.20.48] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 02/22/2024] [Indexed: 03/21/2024] Open
Abstract
A facile approach to novel medicinally relevant spiro heterocyclic scaffolds (namely furan-2(5H)-ones, tetrahydrofurans and pyrans spiro-conjugated with the succinimide ring) has been developed. The protocol consists of Rh(II)-catalyzed insertion of heterocyclic carbenes derived from diazoarylidene succinimides (DAS) into the O-H bond of propiolic/allenic acids or brominated alcohols, followed by base-promoted cyclization to afford the target spirocyclic compounds in good to high yields.
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Affiliation(s)
- Alexander Yanovich
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskiy pr., Peterhof, Saint Petersburg 198504, Russian Federation
| | - Anastasia Vepreva
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskiy pr., Peterhof, Saint Petersburg 198504, Russian Federation
| | - Ksenia Malkova
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskiy pr., Peterhof, Saint Petersburg 198504, Russian Federation
| | - Grigory Kantin
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskiy pr., Peterhof, Saint Petersburg 198504, Russian Federation
| | - Dmitry Dar’in
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskiy pr., Peterhof, Saint Petersburg 198504, Russian Federation
- Saint Petersburg Research Institute of Phthisiopulmonology, 2-4 Ligovsky pr., Saint Petersburg 191036, Russian Federation
- Department of Medicinal Chemistry, Institute of Chemistry, Saint Petersburg State University, 26 Universitetskiy pr., Peterhof 198504, Russian Federation
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3
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Krivovicheva V, Lyutin I, Kantin G, Dar'in D. Access to Spiro Bis-β-lactams via a Metal-Free Microwave-Assisted Wolff Rearrangement/Staudinger [2+2] Cycloaddition Cascade Involving 3-Diazotetramic Acids and Imines. J Org Chem 2024; 89:3585-3589. [PMID: 38363730 DOI: 10.1021/acs.joc.3c02494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Abstract
Herein, we report the study of the thermally promoted reaction of 3-diazotetramic acids with imines as a rapid route to a novel spiro heterocyclic scaffold, spiro bis-β-lactams (2,6-diazaspiro[3.3]heptane-1,5-diones). The transformation proceeds via metal-free microwave-assisted Wolff rearrangement of the diazo reagent followed by Staudinger [2+2] cycloaddition of the heterocyclic ketenes with Shiff bases. This methodology enables the preparation of diastereomerically pure spiro bis-β-lactams in high yields and provides an avenue for exploring new versions of the privileged β-lactam core for drug design.
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Affiliation(s)
| | - Ivan Lyutin
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Grigory Kantin
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Dmitry Dar'in
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
- Saint Petersburg Research Institute of Phthisiopulmonology, Saint Petersburg 191036, Russian Federation
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Malkova K, Tatarinov I, Kantin G, Dar'in D. Utilizing Allenic Acids and Heterocyclic Diazo Compounds in the Synthesis of Polysubstituted Spirocyclic Butenolides and β-Methylidene 2-Furanones. J Org Chem 2024; 89:2782-2786. [PMID: 38299342 DOI: 10.1021/acs.joc.3c02474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
Herein, we report a novel approach for the assembly of spirocyclic Δα,β-butenolides and β-methylidene 2-furanones via Rh(II)-catalyzed O-H insertion of heterocyclic diazo compounds into allenic acids followed by base-promoted cyclization. Utilizing various diazo heterocycles, including α-diazo homophthalimides, 3-diazo tetramic acids, and diazo oxindoles, diverse spirocyclic scaffolds were produced. The research revealed that the allenic acid substitution pattern is decisive for the product type, enabling extraordinary target compound switching between two types of spirocyclic 2-furanones with exo- and endocyclic C═C bonds.
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Affiliation(s)
- Ksenia Malkova
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Ilya Tatarinov
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Grigory Kantin
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Dmitry Dar'in
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
- Saint Petersburg Research Institute of Phthisiopulmonology, Saint Petersburg 191036, Russian Federation
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5
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Levashova E, Adamchik M, Kantin G, Dar'in D. Chemo- and Diastereoselective Entries into All-Carbon α-Quaternary Aldehydes via C-C Insertion of 4-Diazoisoquinolin-3-ones into C-CHO Bonds. J Org Chem 2023. [PMID: 37493111 DOI: 10.1021/acs.joc.3c01222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
Herein, we describe a chemo- and diastereoselective formal C-C insertion reaction of 1,2-disubstituted 4-diazo-3(2H)-isoquinolones and 4-diazoisochroman-3-one into C-CHO bonds of aldehydes, delivering all-carbon α-quaternary aldehydes bearing medicinally important 1,4-dihydro-3(2H)-isoquinolone scaffold. Our protocol is enabled by the preferential 1,2-carbon migration over more common 1,2-H shift. The corresponding reaction tolerates a wide range of functionalities in both aldehyde and diazo components, giving the target homologated aldehydes in generally high yields. The synthetic utility of this method has been further showcased by some transformations of the formyl moiety.
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Affiliation(s)
- Ekaterina Levashova
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Maria Adamchik
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Grigory Kantin
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Dmitry Dar'in
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
- Saint Petersburg Research Institute of Phthisiopulmonology, Saint Petersburg 191036, Russian Federation
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Krivovicheva V, Kantin G, Dar'in D, Krasavin M. Rh(II)-catalyzed condensation of 3-diazotetramic acids with nitriles delivers novel druglike 5,6-dihydro-4H-pyrrolo[3,4-d]oxazol-4-ones. Tetrahedron Lett 2023. [DOI: 10.1016/j.tetlet.2023.154457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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7
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Dar'in D, Kantin G, Glushakova D, Sharoyko V, Krasavin M. Diazo Tetramic Acids Provide Access to Natural-Like Spirocyclic Δ α,β-Butenolides through Rh(II)-Catalyzed O-H Insertion/Base-Promoted Cyclization. J Org Chem 2023. [PMID: 36603207 DOI: 10.1021/acs.joc.2c02600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
3-Diazotetramic acids were found to be valid substrates for the recently discovered approach toward natural-like Δα,β-spirobutenolides via Rh(II)-catalyzed O-H insertion into propiolic acids followed by base-promoted intramolecular Michael addition. The target Δα,β-spirobutenolides were obtained in generally high yields and, in the case of chiral 5-monosubstituted 3-diazotetramic acids, high diastereoselectivity. The synthesis of Δα,β-spirobutenolides that we report here was virtually insensitive to the structure of the propiolic acids though it was somewhat sensitive to the structure of the 3-diazotetramic acids, thereby demonstrating quite a large scope. Thus, a new class of α-diazocarbonyl compounds suitable for the realization of the approach outlined above was identified.
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Affiliation(s)
- Dmitry Dar'in
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetsky prospekt, Peterhof 198504 Russia
| | - Grigory Kantin
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetsky prospekt, Peterhof 198504 Russia
| | - Daria Glushakova
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetsky prospekt, Peterhof 198504 Russia
| | - Vladimir Sharoyko
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetsky prospekt, Peterhof 198504 Russia
- The Pavlov First Medical University, 6-8 Lva Tolstogo ulitsa, Saint Petersburg 197022, Russia
| | - Mikhail Krasavin
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetsky prospekt, Peterhof 198504 Russia
- Immanuel Kant Baltic Federal University, 14 Aleksandra Nevskogo ulitsa, Kaliningrad 236041, Russia
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Vepreva A, Yanovich A, Dar’in D, Kantin G, Bunev A, Krasavin M. A novel spirocyclic scaffold accessed via tandem Claisen rearrangement/intramolecular oxa-Michael addition. Beilstein J Org Chem 2022; 18:1649-1655. [PMID: 36570564 PMCID: PMC9749547 DOI: 10.3762/bjoc.18.177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 11/11/2022] [Indexed: 12/12/2022] Open
Abstract
A straightforward access to novel spiro[benzofuran-2,3'-pyrrolidine]-2',5'-diones based on the Rh2(esp)2-catalyzed insertion of carbenes derived from diazo arylidene succinimides (DAS) into the O-H bond of phenols is described. The initial adducts underwent a thermally promoted Claisen rearrangement followed by DABCO-catalyzed intramolecular 5-exo-trig oxa-Michael addition.
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Affiliation(s)
- Anastasia Vepreva
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Alexander Yanovich
- Academic Gymnasium of Saint Petersburg University, Saint Petersburg 199155, Russian Federation
| | - Dmitry Dar’in
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Grigory Kantin
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Alexander Bunev
- Medicinal Chemistry Center, Togliatti State University, Togliatti 445020, Russian Federation
| | - Mikhail Krasavin
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation,Immanuel Kant Baltic Federal University, Kaliningrad 236016, Russian Federation
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9
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Lebedev R, Dar’in D, Kantin G, Bakulina O, Krasavin M. One-Pot Sequence of Staudinger/aza-Wittig/Castagnoli-Cushman Reactions Provides Facile Access to Novel Natural-like Polycyclic Ring Systems. Molecules 2022; 27:molecules27238130. [PMID: 36500222 PMCID: PMC9735558 DOI: 10.3390/molecules27238130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 11/09/2022] [Accepted: 11/14/2022] [Indexed: 11/25/2022]
Abstract
Realization of the one-pot Staudinger/aza-Wittig/Castagnoli-Cushman reaction sequence for a series of azido aldehydes and homophthalic anhydrides is described. The reaction proceeded at room temperature and delivered novel polyheterocycles related to the natural product realm in high yields and high diastereoselectivity. The methodology has been extended to three other cyclic anhydrides. These further unravel the potential of the Castagnoli-Cushman reaction in generating polyheterocyclic molecular scaffolds.
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Affiliation(s)
- Rodion Lebedev
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii Prospect, Peterhof 198504, Russia
| | - Dmitry Dar’in
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii Prospect, Peterhof 198504, Russia
| | - Grigory Kantin
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii Prospect, Peterhof 198504, Russia
| | - Olga Bakulina
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii Prospect, Peterhof 198504, Russia
| | - Mikhail Krasavin
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii Prospect, Peterhof 198504, Russia
- Institute of Living Systems, Immanuel Kant Baltic Federal University, Kaliningrad 236041, Russia
- Correspondence:
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Dar’in D, Kantin G, Bunev A, Krasavin M. Facile and diastereoselective arylation of the privileged 1,4-dihydroisoquinolin-3(2 H)-one scaffold. Beilstein J Org Chem 2022; 18:1070-1078. [PMID: 36105725 PMCID: PMC9443417 DOI: 10.3762/bjoc.18.109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 07/19/2022] [Indexed: 11/23/2022] Open
Abstract
A practically convenient and streamlined protocol for the trans-diastereoselective introduction of an aryl substituent at position 4 of the 1,4-dihydroisoquinol-3-one (1,4-DHIQ) scaffold is presented. The protocol involves direct Regitz diazo transfer onto readily available 3(2H)-isoquinolones followed by TfOH-promoted hydroarylation by an arene molecule. Screening of the novel 1,2,4-trisubstituted 1,4-DHIQs against cancer cell lines confirmed high cytotoxicity of selected analogs, which validates this new chemotype for further investigations as anticancer cytotoxic agents.
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Affiliation(s)
- Dmitry Dar’in
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Grigory Kantin
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Alexander Bunev
- Medicinal Chemistry Center, Togliatti State University, 445020 Togliatti, Russian Federation,
| | - Mikhail Krasavin
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
- Immanuel Kant Baltic Federal University, Kaliningrad 236016, Russian Federation
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11
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Kazantsev A, Bakulina O, Dar'in D, Kantin G, Bunev A, Krasavin M. Unexpected Ring Contraction of Homophthalic Anhydrides under Diazo Transfer Conditions. Org Lett 2022; 24:4762-4765. [PMID: 35749721 DOI: 10.1021/acs.orglett.2c01730] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An attempted Regitz diazo transfer onto homophthalic anhydride led to the discovery of an unexpected ring contraction, which gave N-sulfonyl phthalide-3-carboxamide derivatives. The reaction is thought to proceed via a [3 + 2] cycloaddition of the substrate's enol form and the azide followed by a two-step fragmentation of the intermediate 1,2,3-triazoline with a loss of the nitrogen molecule.
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Affiliation(s)
- Alexander Kazantsev
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Olga Bakulina
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Dmitry Dar'in
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Grigory Kantin
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Alexander Bunev
- Medicinal Chemistry Center, Togliatti State University, 445020 Togliatti, Russian Federation
| | - Mikhail Krasavin
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation.,Immanuel Kant Baltic Federal University, Kaliningrad 236016, Russian Federation
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12
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Vepreva A, Bunev AS, Kudinov AY, Kantin G, Krasavin M, Dar’in D. Unusual highly diastereoselective Rh(II)-catalyzed dimerization of 3-diazo-2-arylidenesuccinimides provides access to a new dibenzazulene scaffold. Beilstein J Org Chem 2022; 18:533-538. [PMID: 35615536 PMCID: PMC9112184 DOI: 10.3762/bjoc.18.55] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 05/06/2022] [Indexed: 11/23/2022] Open
Abstract
Formation of unusual unsymmetrical dimers or/and indenes via Rh2(esp)2-catalyzed decomposition of 3-diazo-2-arylidenesuccinimides has been investigated. The reaction proceeded under mild conditions, and its result was shown to strongly depend on the nature of the substituents in the diazo substrate. The new reaction provides access to dibenzoazulenodipyrrole and indenopyrrole derivatives in moderate to high yield. Dibenzoazulenodipyrroles bearing alkyl substituents at the nitrogen atom showed pronounced cytotoxocity against the A549 human lung adenocarcinoma cell line while N-aryl analogs were non-cytotoxic.
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Affiliation(s)
- Anastasia Vepreva
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Alexander S Bunev
- Medicinal Chemistry Center, Togliatti State University, 445020 Togliatti, Russian Federation
| | - Andrey Yu Kudinov
- Medicinal Chemistry Center, Togliatti State University, 445020 Togliatti, Russian Federation
| | - Grigory Kantin
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Mikhail Krasavin
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
- Immanuel Kant Baltic Federal University, Kaliningrad 236041, Russian Federation
| | - Dmitry Dar’in
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
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Chupakhin E, Kantin G, Dar'in D, Krasavin M. Novel chromeno[2,3-c]pyrroles synthesized via intramolecular rhodium(ii) carbene trapping. Mendeleev Communications 2022. [DOI: 10.1016/j.mencom.2022.05.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Ananeva A, Bakulina O, Dar’in D, Kantin G, Krasavin M. Dicarboxylic Acid Monoesters in β- and δ-Lactam Synthesis. Molecules 2022; 27:molecules27082469. [PMID: 35458663 PMCID: PMC9032910 DOI: 10.3390/molecules27082469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/03/2022] [Accepted: 04/08/2022] [Indexed: 02/01/2023] Open
Abstract
A N-(2-methoxy-2-oxoethyl)-N-(phenylsulfonyl)glycine monomethyl ester of the respective dicarboxylic acid was involved in a reaction with imines promoted by acetic anhydride at an elevated temperature. Instead of the initially expected δ-lactam products of the Castagnoli–Cushman-type reaction, medicinally important 3-amino-2-azetidinones were obtained as the result of cyclization, involving a methylene group adjacent to an acid moiety. In contrast, replacing alcohol residue with hexafluoroisopropyl in the same substrate made another methylene group (adjacent to the ester moiety) more reactive to furnishing the desired δ-lactam in the Castagnoli–Cushman fashion.
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Affiliation(s)
- Anna Ananeva
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii Prospect, 198504 Peterhof, Russia; (A.A.); (D.D.); (G.K.)
| | - Olga Bakulina
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii Prospect, 198504 Peterhof, Russia; (A.A.); (D.D.); (G.K.)
- Correspondence: (O.B.); (M.K.)
| | - Dmitry Dar’in
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii Prospect, 198504 Peterhof, Russia; (A.A.); (D.D.); (G.K.)
| | - Grigory Kantin
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii Prospect, 198504 Peterhof, Russia; (A.A.); (D.D.); (G.K.)
| | - Mikhail Krasavin
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii Prospect, 198504 Peterhof, Russia; (A.A.); (D.D.); (G.K.)
- Institute of Living Systems, Immanuel Kant Baltic Federal University, 236041 Kaliningrad, Russia
- Correspondence: (O.B.); (M.K.)
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Guranova N, Bakulina O, Dar'in D, Kantin G, Krasavin M. Homophthalic Monoesters: A New Type of Reagents for the Castagnoli‐Cushman Reaction. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101281] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Olga Bakulina
- Saint Petersburg State University Chemistry RUSSIAN FEDERATION
| | - Dmitry Dar'in
- Saint Petersburg State University Chemistry RUSSIAN FEDERATION
| | - Grigory Kantin
- Saint Petersburg State University: Sankt-peterburgskij gosudarstvennyj universitet Chemistry RUSSIAN FEDERATION
| | - Mikhail Krasavin
- Saint Petersburg State University Chemistry 26 Universitetskyi Prospekt 198504 Peterhof RUSSIAN FEDERATION
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16
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Krasavin M, Dar’in D, Vepreva A, Kantin G. A General Way to Spiro-Annulated 2-Benzoxepines via Rh2(esp)2-Catalyzed [5+2] Cycloaddition of Diazo Arylidene Succinimides to Ketones. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/s-0037-1610790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
AbstractThe formation of spirocyclic 2-benzoxepines by Rh2(esp)2-catalyzed decomposition of diazo arylidene succinimides in the presence of ketones was investigated. This transformation, which is a formal [5+2] cycloaddition of styryl rhodium carbenes to the carbonyl group, occurs in high yields under mild conditions, with high carbonyl substrate tolerance and diastereoselectivity. The developed general method opens access to rare spiro (hetero)cyclic scaffolds with great potential in drug discovery.
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Affiliation(s)
- Mikhail Krasavin
- Saint Petersburg State University
- Immanuel Kant Baltic Federal University
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17
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Budeev A, Kantin G, Dar'in D, Krasavin M. Ugi reaction-derived 1H-pyrrol-2(5H)-ones proved as valid precursors to a new class of heterocyclic α-diazocarbonyl compounds. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2021.153598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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18
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Dar'in D, Kantin G, Kalinin S, Sharonova T, Bunev A, Ostapenko GI, Nocentini A, Sharoyko V, Supuran CT, Krasavin M. Corrigendum to "Investigation of 3-sulfamoyl coumarins against cancer-related IX and XII isoforms of human carbonic anhydrase as well as cancer cells leads to the discovery of 2-oxo-2H-benzo[h]chromene-3-sulfonamide - A new caspase-activating proapoptotic agent" [J. Med. Chem. 222 (2021) 113589]. Eur J Med Chem 2021; 225:113788. [PMID: 34438125 DOI: 10.1016/j.ejmech.2021.113788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Dmitry Dar'in
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation
| | - Grigory Kantin
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation
| | - Stanislav Kalinin
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation
| | - Tatiana Sharonova
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation
| | - Alexander Bunev
- Medicinal Chemistry Center, Togliatti State University, Togliatti, 445020, Russian Federation
| | - Gennady I Ostapenko
- Medicinal Chemistry Center, Togliatti State University, Togliatti, 445020, Russian Federation
| | - Alessio Nocentini
- Neurofarba Department, Universita degli Studi di Firenze, Florence, 50019, Italy
| | - Vladimir Sharoyko
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation
| | - Claudiu T Supuran
- Neurofarba Department, Universita degli Studi di Firenze, Florence, 50019, Italy
| | - Mikhail Krasavin
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation.
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19
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Abstract
A three-component synthesis of 1,5-disubstituted 1,2,3-triazoles from α-acetyl-α-diazomethane sulfonamides, primary aliphatic amines, and aromatic aldehydes is presented. The 1,2,3-triazoles can be accessed in two alternative variants, depending on the substitutions in the sulfonamide portion of the diazo reagent. In one variant, intermediate 1,2,3-triazoline-4-sulfonamides are isolated chromatographically and then subjected to thermally promoted aromatization with elimination of sulfur(IV) oxide and amine. In the other variant, both chemical transformations take place in a single step conducted at room temperature.
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Affiliation(s)
- Andrey Bubyrev
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetsky prospekt, Peterhof 198504, Russia
| | - Ksenia Malkova
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetsky prospekt, Peterhof 198504, Russia
| | - Grigory Kantin
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetsky prospekt, Peterhof 198504, Russia
| | - Dmitry Dar'in
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetsky prospekt, Peterhof 198504, Russia
| | - Mikhail Krasavin
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetsky prospekt, Peterhof 198504, Russia
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20
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Inyutina A, Kantin G, Dar In D, Krasavin M. Diastereoselective Formal [5+2] Cycloaddition of Diazo Arylidene Succinimides-Derived Rhodium Carbenes and Aldehydes: A Route to 2-Benzoxepines. J Org Chem 2021; 86:13673-13683. [PMID: 34517699 DOI: 10.1021/acs.joc.1c01710] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
We report on a facile method for the preparation of 2-benzoxepine derivatives as a result of Rh(II)-catalyzed decomposition of diazo arylidene succinimides in the presence of aldehydes. The process is thought to involve the formation of styryl carbonyl ylide which undergoes 1,7-electrocyclization and subsequent 1,5-hydrogen shift. In some cases, the competition of the target reaction and [3+2] dipolar cycloaddition of the intermediate carbonyl ylide to another molecule of diazo substrate was observed. Generally, the desired 2-benzoxepines were isolated in good to high yields and high diastereoselectivity. The developed original approach toward a 2-benzoxepine core via formal [5+2] cycloaddition of styryl carbenoids and aldehydes significantly expands the arsenal of synthetic methods for producing this scaffold.
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Affiliation(s)
- Anna Inyutina
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Grigory Kantin
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Dmitry Dar In
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Mikhail Krasavin
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
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21
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Abstract
A new type of diazo compounds, namely, CH-diazomethane sulfonamides (generated in situ from readily available α-acetyl-α-diazomethane sulfonamides), was employed in a 1,3-dipolar cycloaddition reaction with imines (also formed in situ from primary amines and aldehydes). The reaction gave hitherto undescribed 1,5-disubstituted 1,2,3-triazoline-4-sulfonamides, which were obtained in good to excellent yields with complete trans diastereoselectivity. These new sulfonamides based on the nonaromatic 1,2,3-triazoline core are rather attractive from a medicinal chemistry standpoint in light of the strong emphasis recently put on the nonflat, more saturated (higher Fsp3) scaffolds for lead-generation libraries. The oxidative aromatization of 1,2,3-triazoline-4-sulfonamides by manganese(IV) oxide gave nearly quantitative yields of 1,2,3-triazole-4-sulfonamides, of which only two examples have been reported in the literature.
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Affiliation(s)
- Andrey Bubyrev
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Maria Adamchik
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Dmitry Dar'in
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Grigory Kantin
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Mikhail Krasavin
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
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22
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Guranova N, Dar'in D, Kantin G, Krasavin M. Oxonium Ylides Generated from 1,4‐Disubstituted α‐Diazo Glutaconimides: a Rich Source of Diverse Oxygen Heterocyclic Frameworks. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100515] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Natalia Guranova
- Dr. Saint Petersburg State University 199034 Saint Petersburg Russian Federation
| | - Dmitry Dar'in
- Dr. Saint Petersburg State University 199034 Saint Petersburg Russian Federation
| | - Grigory Kantin
- Dr. Saint Petersburg State University 199034 Saint Petersburg Russian Federation
| | - Mikhail Krasavin
- Dr. Saint Petersburg State University 199034 Saint Petersburg Russian Federation
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23
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Inyutina A, Dar'in D, Kantin G, Krasavin M. Tricyclic 2-benzazepines obtained via an unexpected cyclization involving nitrilium ylides. Org Biomol Chem 2021; 19:5068-5071. [PMID: 34027962 DOI: 10.1039/d1ob00773d] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Attempted use of (E)-3-arylidene-4-diazopyrrolidine-2,5-diones in the Rh(ii)-catalyzed condensation with nitriles to form 1,3-oxazoles led to an unexpected outcome. The nitrilium ylide species thought to form on Rh(ii)-catalyzed decomposition of diazo compounds underwent a cyclization onto the nearby arylidene moiety followed by 1,5-hydride shift. This led to the formation of a 2-benzazepine core which has special significance for drug discovery and can be considered a privileged scaffold.
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Affiliation(s)
- Anna Inyutina
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russian Federation.
| | - Dmitry Dar'in
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russian Federation.
| | - Grigory Kantin
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russian Federation.
| | - Mikhail Krasavin
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russian Federation.
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24
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Dar'in D, Kantin G, Kalinin S, Sharonova T, Bunev A, Ostapenko GI, Nocentini A, Sharoyko V, Supuran CT, Krasavin M. Investigation of 3-sulfamoyl coumarins against cancer-related IX and XII isoforms of human carbonic anhydrase as well as cancer cells leads to the discovery of 2-oxo-2H-benzo[h]chromene-3-sulfonamide - A new caspase-activating proapoptotic agent. Eur J Med Chem 2021; 222:113589. [PMID: 34147910 DOI: 10.1016/j.ejmech.2021.113589] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/23/2021] [Accepted: 05/27/2021] [Indexed: 02/08/2023]
Abstract
Herein we report the synthesis of a set of seventeen 3-sulfonamide substituted coumarin derivatives. Prepared compounds were tested in vitro for inhibition of four physiologically relevant isoforms of the metalloenzyme human carbonic anhydrase (hCA, EC 4.2.1.1). Several coumarin sulfonamides displayed low nanomolar KI values against therapeutically relevant hCA II, IX, and XII, whereas they did not potently inhibit hCA I. Some of these compounds exerted a concentration-dependent antiproliferative action toward RT4 human bladder cancer and especially A431 human epidermoid carcinoma cell lines. In the meantime, the viability of non-tumorigenic hTERT immortalized human foreskin fibroblast cell line Bj-5ta was not significantly affected by the obtained derivatives. Interestingly, compound 10q (2-oxo-2H-benzo [h]chromene-3-sulfonamide) showed a profound and selective dose-dependent inhibition of A431 cell growth with low nanomolar IC50 values. We demonstrated that 10q possessed a concentration-dependent apoptosis induction activity associated with caspase 3/7 activation in cancer cells. As carbonic anhydrase isoforms in question were not potently inhibited by this compound, its antiproliferative effects likely involve other mechanisms, such as DNA intercalation. Compound 10q clearly represents a viable lead for further development of new-generation anticancer agents.
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Affiliation(s)
- Dmitry Dar'in
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation
| | - Grigory Kantin
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation
| | - Stanislav Kalinin
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation
| | - Tatiana Sharonova
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation
| | - Alexander Bunev
- Medicinal Chemistry Center, Togliatti State University, Togliatti, 445020, Russian Federation
| | - Gennady I Ostapenko
- Medicinal Chemistry Center, Togliatti State University, Togliatti, 445020, Russian Federation
| | - Alessio Nocentini
- Neurofarba Department, Universita Degli Studi di Firenze, Florence, 50019, Italy
| | - Vladimir Sharoyko
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation
| | - Claudiu T Supuran
- Neurofarba Department, Universita Degli Studi di Firenze, Florence, 50019, Italy.
| | - Mikhail Krasavin
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation.
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25
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Dar’in D, Krasavin M, Budeev AV, Kantin G. Continued Exploration of Trifunctional Alkyl 4-Chloro-2-diazo-3-oxobutanoates: Streamlined Entry into [1,2,3]Triazolo[5,1-c][1,4]benzoxazines and [1,2,3]Triazolo[5,1-c][1,4]benzoxazepines. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1348-9031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
AbstractFurther exploration of the trifunctional character of previously introduced alkyl 4-chloro-2-diazo-3-oxobutanoates in reactions with N-protected substituted o-aminophenols followed by deprotection provided a convenient entry into [1,2,3]triazolo[5,1-c][1,4]benzoxazines, which are of high medicinal importance, as documented in the literature. The same approach applied to N-protected substituted o-(aminomethyl)phenols afforded [1,2,3]triazolo[5,1-c][1,4]benzoxazepines, which are practically unexplored compounds from a medicinal chemistry perspective. The syntheses start with SN2-type alkylation of the phenol. Removal of the protecting group triggers imine formation followed by Wolff 1,2,3-triazole synthesis.
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Affiliation(s)
| | - Mikhail Krasavin
- Saint Petersburg State University
- Immanuel Kant Baltic Federal University
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26
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Guranova N, Golubev P, Bakulina O, Dar'in D, Kantin G, Krasavin M. Unexpected formal [4 + 2]-cycloaddition of chalcone imines and homophthalic anhydrides: preparation of dihydropyridin-2(1 H)-ones. Org Biomol Chem 2021; 19:3829-3833. [PMID: 33949583 DOI: 10.1039/d1ob00534k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of medicinally important dihydropyridin-2(1H)-ones have been prepared via a novel [4 + 2]-formal cycloaddition reaction of chalcone imines and homophthalic anhydrides, which is a rare example of lactam construction from an imine acting as a four-atom building block. In contrast to previous studies on the reactivity of homophthalic anhydrides towards similar substrates, N-tosyl chalcone imines, we found the possibility of switching chemoselectivity by changing substituents at the nitrogen atom, which leads to the formation of heterocycles instead of the expected carbocycles. This reaction is very similar in appearance to the classic 1,2-addition of cyclic anhydrides to imines, often referred to as the Castagnoli-Cushman reaction, but differs in mechanistic details (representing a 1,4-reaction of imine). The developed atom-economical, stereoselective and catalyst- and chromatography-free protocol provided facile access to 28 structurally diverse heterocyclic products (in up to 88% yield) including synthetically challenging annelated tricyclic and previously unreported pentaaryl-substituted dihydropyridin-2(1H)-ones.
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Affiliation(s)
- Natalia Guranova
- Saint Petersburg State University, Saint Petersburg, 199034 Russian Federation.
| | - Pavel Golubev
- Saint Petersburg State University, Saint Petersburg, 199034 Russian Federation.
| | - Olga Bakulina
- Saint Petersburg State University, Saint Petersburg, 199034 Russian Federation.
| | - Dmitry Dar'in
- Saint Petersburg State University, Saint Petersburg, 199034 Russian Federation.
| | - Grigory Kantin
- Saint Petersburg State University, Saint Petersburg, 199034 Russian Federation.
| | - Mikhail Krasavin
- Saint Petersburg State University, Saint Petersburg, 199034 Russian Federation.
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27
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Dar'in D, Kantin G, Chupakhin E, Sharoyko V, Krasavin M. Natural-Like Spirocyclic Δ α,β -Butenolides Obtained from Diazo Homophthalimides. Chemistry 2021; 27:8221-8227. [PMID: 33848018 DOI: 10.1002/chem.202100880] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Indexed: 01/07/2023]
Abstract
α-Diazo homophotalimides were reacted with various propiolic acids on Rh2 (esp)2 catalysis. The resulting propiolate esters were transformed into novel, heterocyclic Δα,β -spirobutenolides in good to excellent product yields. The approach represents a fundamentally novel entry into natural-like Δα,β -spirobutenolides present in many biologically active natural products as well as fully synthetic compounds endowed with diverse biological activities. The Δα,β -spirobutenolides thus obtained were shown to inhibit thioredoxin reductase, a selenocysteine enzyme target for cancer. Moreover, for the best compound in the series (TrxR IC50 1.49±0.08 μM), by using MALDI-TOF mass-spectrometry it was shown that it selectively binds selenocysteine in the presence of a 10-fold excess of cysteine. This validates the new compound as a promising lead for anticancer therapy development.
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Affiliation(s)
- Dmitry Dar'in
- Chair of Natural Products Chemistry, Saint Petersburg State University, Saint-Petersburg, 199034, Russian Federation
| | - Grigory Kantin
- Chair of Natural Products Chemistry, Saint Petersburg State University, Saint-Petersburg, 199034, Russian Federation
| | - Evgeny Chupakhin
- Chair of Natural Products Chemistry, Saint Petersburg State University, Saint-Petersburg, 199034, Russian Federation.,Immanuel Kant Baltic Federal University, Kaliningrad, 236041, Russian Federation
| | - Vladimir Sharoyko
- Chair of Natural Products Chemistry, Saint Petersburg State University, Saint-Petersburg, 199034, Russian Federation.,Laboratory for Cell Biotechnology, Saint Petersburg State Institute of Technology (University), Saint Petersburg, 190013, Russian Federation
| | - Mikhail Krasavin
- Chair of Natural Products Chemistry, Saint Petersburg State University, Saint-Petersburg, 199034, Russian Federation.,Immanuel Kant Baltic Federal University, Kaliningrad, 236041, Russian Federation
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28
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Budeev A, Kantin G, Dar’in D, Krasavin M. Diazocarbonyl and Related Compounds in the Synthesis of Azoles. Molecules 2021; 26:2530. [PMID: 33926128 PMCID: PMC8123665 DOI: 10.3390/molecules26092530] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 04/21/2021] [Accepted: 04/22/2021] [Indexed: 12/15/2022] Open
Abstract
Diazocarbonyl compounds have found numerous applications in many areas of chemistry. Among the most developed fields of diazo chemistry is the preparation of azoles from diazo compounds. This approach represents a useful alternative to more conventional methods of the synthesis of azoles. A comprehensive review on the preparation of various azoles (oxazoles, thiazoles, imidazoles, pyrazoles, triazoles, and tetrazoles) from diazocarbonyl and related compounds is presented for the first time along with discussion of advantages and disadvantages of «diazo» approaches to azoles.
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Affiliation(s)
| | | | - Dmitry Dar’in
- Institute of Chemistry, St. Petersburg State University, 198504 Peterhof, Russia; (A.B.); (G.K.)
| | - Mikhail Krasavin
- Institute of Chemistry, St. Petersburg State University, 198504 Peterhof, Russia; (A.B.); (G.K.)
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29
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Peshkov AA, Bakulina O, Dar'in D, Kantin G, Bannykh A, Peshkov VA, Krasavin M. Three‐Component Castagnoli‐Cushman Reaction of 3‐Arylglutaconic Acid Anhydrides, Carbonyl Compounds, and Ammonium Acetate: a Quick and Flexible Way to Assemble Polysubstituted
NH
‐δ‐lactams. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001617] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Anatoly A. Peshkov
- Department of Natural Products Chemistry Institute of Chemistry Saint Petersburg State University 26 Universitetskyi prospekt Peterhof 198504 Russian Federation
| | - Olga Bakulina
- Department of Natural Products Chemistry Institute of Chemistry Saint Petersburg State University 26 Universitetskyi prospekt Peterhof 198504 Russian Federation
| | - Dmitry Dar'in
- Department of Natural Products Chemistry Institute of Chemistry Saint Petersburg State University 26 Universitetskyi prospekt Peterhof 198504 Russian Federation
| | - Grigory Kantin
- Department of Natural Products Chemistry Institute of Chemistry Saint Petersburg State University 26 Universitetskyi prospekt Peterhof 198504 Russian Federation
| | - Anton Bannykh
- Department of Natural Products Chemistry Institute of Chemistry Saint Petersburg State University 26 Universitetskyi prospekt Peterhof 198504 Russian Federation
- Current address: Department of Chemistry University of Jyväskylä Survontie 9B Jyväskylä 40014 Finland
| | - Vsevolod A. Peshkov
- Department of Chemistry School of Sciences and Humanities Nazarbayev University Nur-Sultan 010000 Republic of Kazakhstan
| | - Mikhail Krasavin
- Department of Natural Products Chemistry Institute of Chemistry Saint Petersburg State University 26 Universitetskyi prospekt Peterhof 198504 Russian Federation
- Immanuel Kant Baltic Federal University Kaliningrad 236041 Russian Federation
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30
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Guranova N, Kantin G, Dar'in D, Krasavin M. Diazo Glutaconimides: an Unexplored Type of Heterocyclic α‐Diazocarbonyl Compounds Conveniently Evolved into Pyridine‐2,6(1
H
,3
H
)‐diones and Oxazolo[5,4‐
b
]pyridin‐5(4
H
)‐ones. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Natalia Guranova
- Department of Natural Products Chemistry, Institute of Chemistry, Saint Petersburg State University 26 Universitetskii prospekt Peterhof 198504 Russian Federation
| | - Grigory Kantin
- Department of Natural Products Chemistry, Institute of Chemistry, Saint Petersburg State University 26 Universitetskii prospekt Peterhof 198504 Russian Federation
| | - Dmitry Dar'in
- Department of Natural Products Chemistry, Institute of Chemistry, Saint Petersburg State University 26 Universitetskii prospekt Peterhof 198504 Russian Federation
| | - Mikhail Krasavin
- Department of Natural Products Chemistry, Institute of Chemistry, Saint Petersburg State University 26 Universitetskii prospekt Peterhof 198504 Russian Federation
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31
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Dar’in D, Krasavin M, Bubyrev A, Kantin G. CH-Diazomethane Sulfonamides Generated in Situ for Intramolecular [3+2] Cycloaddition of Alkynes: An Entry into Novel Pyrazole-Fused Five-Membered Sultams. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/a-1336-6857] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
AbstractPreviously reported CH-diazomethane sulfonamides carrying various propargylic groups are generated in situ from their acetyl precursors. Without purification, these compounds undergo a slow, albeit clean and efficient, intramolecular [3+2] cycloaddition to give pyrazole-fused five-membered sultams. The latter are the first analogues of medicinally important (hetero)arene-fused five-membered sultams containing a five-membered nitrogenous heterocycle. The newly introduced scaffold can be further elaborated into N-arylated derivatives using the Chan–Evans–Lam protocol. The resulting compounds incorporate more than one privileged moiety and are highly suitable for interrogation of protein targets via biological screening.
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32
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Dar'in D, Kantin G, Bakulina O, Inyutina A, Chupakhin E, Krasavin M. Spirocyclizations Involving Oxonium Ylides Derived from Cyclic α-Diazocarbonyl Compounds: An Entry into 6-Oxa-2-azaspiro[4.5]decane Scaffold. J Org Chem 2020; 85:15586-15599. [PMID: 33226243 DOI: 10.1021/acs.joc.0c02356] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
New types of cyclic diazo compounds capable of Rh(II)-catalyzed spirocyclizations with tetrahydrofuran have been discovered. The formation of the spirocyclic framework is thought to proceed via the formation of Rh(II) carbene species followed by interaction with the Lewis basic oxygen atom of tetrahydrofuran to give oxonium ylide species. The latter evolves predominantly via the Stevens type rearrangement leading to an [n + 1] ring expansion of the tetrahydrofuran moiety, which results in the formation of a medicinally relevant 6-oxa-2-azaspiro[4.5]decane scaffold. The spirocyclization process was often observed in competition with mechanistically distinct C-H insertion into a tetrahydrofuran molecule. This competing process gave compounds based on the 3-(tetrahydrofur-2-yl)pyrrolidine scaffold, which are also relevant from the medicinal chemistry standpoint. These findings enrich the available arsenal of metal-catalyzed spirocyclization methods based on the use of cyclic diazo compounds.
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Affiliation(s)
- Dmitry Dar'in
- Saint Petersburg State University, Saint Petersburg, 199034 Russian Federation
| | - Grigory Kantin
- Saint Petersburg State University, Saint Petersburg, 199034 Russian Federation
| | - Olga Bakulina
- Saint Petersburg State University, Saint Petersburg, 199034 Russian Federation
| | - Anna Inyutina
- Saint Petersburg State University, Saint Petersburg, 199034 Russian Federation
| | - Evgeny Chupakhin
- Saint Petersburg State University, Saint Petersburg, 199034 Russian Federation.,Immanuel Kant Baltic Federal University, Kaliningrad 236041 Russian Federation
| | - Mikhail Krasavin
- Saint Petersburg State University, Saint Petersburg, 199034 Russian Federation.,Immanuel Kant Baltic Federal University, Kaliningrad 236041 Russian Federation
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33
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Dar’in D, Krasavin M, Chupakhin E, Gecht M, Ivanov A, Kantin G. (E)-3-Arylidene-4-diazopyrrolidine-2,5-diones: Preparation and Use in RhII-Catalyzed X–H Insertion Reactions towards Novel, Medicinally Important Michael Acceptors. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1706556] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AbstractThe use of readily available 1-aryl-3-arylidenepyrrolidine-2,5-diones in high yielding direct diazo-transfer reactions and subsequent involvement of the resulting diazo compounds in RhII-catalyzed O–H, S–H, and N–H insertion reactions delivered 4-substituted 1-aryl-3-arylidenepyrrolidine-2,5-diones of defined regiochemistry and geometrical configuration. These products are intended to be studied as Michael acceptors capable of inhibiting thioredoxin reductase, a promising cancer target.
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Affiliation(s)
- Dmitry Dar’in
- Institute of Chemistry, Saint Petersburg State University
| | - Mikhail Krasavin
- Institute of Chemistry, Saint Petersburg State University
- Immanuel Kant Baltic Federal University
| | | | - Martha Gecht
- Institute of Chemistry, Saint Petersburg State University
| | | | - Grigory Kantin
- Institute of Chemistry, Saint Petersburg State University
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34
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Krasavin M, Synofzik J, Bakulina O, Dar’in D, Kantin G. Dialkyl Diazomalonates in Transition-Metal-Free, Thermally Promoted, Diastereoselective Wolff β-Lactam Synthesis. Synlett 2020. [DOI: 10.1055/s-0040-1707811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Metal-free, thermally promoted synthesis of 3-alkoxy-3-alkoxycarbonyl-2-azetidinones via the Wolff-Staudinger β-lactam synthesis using dialkyl diazomalonates is described. The reaction appears fairly general and delivers only one diastereomer.
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Bubyrev A, Dar'in D, Kantin G, Krasavin M. Cover Feature: Synthetic Studies towards CH‐Diazomethane Sulfonamides: a Novel Type of Diazo Reagents (Eur. J. Org. Chem. 27/2020). European J Org Chem 2020. [DOI: 10.1002/ejoc.202000948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Andrey Bubyrev
- Saint Petersburg State University 199034 Saint Petersburg Russian Federation
| | - Dmitry Dar'in
- Saint Petersburg State University 199034 Saint Petersburg Russian Federation
| | - Grigory Kantin
- Saint Petersburg State University 199034 Saint Petersburg Russian Federation
| | - Mikhail Krasavin
- Saint Petersburg State University 199034 Saint Petersburg Russian Federation
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Affiliation(s)
- Andrey Bubyrev
- Saint Petersburg State University 199034 Saint Petersburg Russian Federation
| | - Dmitry Dar'in
- Saint Petersburg State University 199034 Saint Petersburg Russian Federation
| | - Grigory Kantin
- Saint Petersburg State University 199034 Saint Petersburg Russian Federation
| | - Mikhail Krasavin
- Saint Petersburg State University 199034 Saint Petersburg Russian Federation
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Abstract
A convenient one-pot approach to the preparation of α-diazo-β-ketosulfones from sulfonyl chlorides is described. It involves the conversion of the sulfonyl chloride to sodium sulfinate, alkylation of the latter with α-haloketones followed by diazo transfer using the ‘sulfonyl-azide-free’ (‘SAFE’) protocol in aqueous medium. The simple and expedient method relies on readily available starting materials and provides facile access to a wide variety of valuable diazo reagents for organic synthesis.
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Affiliation(s)
- Mikhail Krasavin
- Saint Petersburg State University
- Laboratory of Chemical Pharmacology, Institute of Chemistry, Saint Petersburg State University
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Dar’in D, Khoroshilova O, Kantin G, Krasavin M. Realizing the Trifunctional Potential of Alkyl 4-Chloro-2-diazo-3-oxobutanoates: Convenient Assembly of 6,7-Dihydro-4H-[1,2,3]triazolo[5,1-c][1,4]thiazine Core. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0039-1690802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The first example of exploiting the trifunctional character of alkyl 4-chloro-2-diazo-3-oxobutanoates in the reactions with vicinal N,S-bis-nucleophiles leading to the formation of bicyclic 6,7-dihydro-4H-[1,2,3]triazolo[5,1-c][1,4]thiazines is presented. The key to the successful realization of the atom-economical synthetic strategy is the initial S
N
2 event, which facilitates the subsequent domino 1,2,3-triazole formation via the Wolff reaction. Equally important is the choice of sodium acetate as the base: acetic acid formed in the course of the initial nucleophilic substitution acts as an efficient catalyst for the Wolff reaction, which suppresses the competing, unwanted fragmentation path (observed when other bases are used).
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Affiliation(s)
| | | | | | - Mikhail Krasavin
- Saint Petersburg State University
- Immanuel Kant Baltic Federal University
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39
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Krasavin M, Chuprun S, Dar’in D, Kantin G, Zhmurov P. α-Diazoacetamides in Sc(OTf)3-Catalyzed Tiffeneau–Demjanov Ring Expansion: Application towards the Synthesis of Rare Bicyclic Pyrazoles. Synlett 2020. [DOI: 10.1055/s-0039-1690047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
A novel Sc(OTf)3-catalyzed Tiffeneau–Demjanov ring expansion of six-membered cyclic ketones has been developed. The resulting seven-membered cyclic β-keto carboxamides were found to be versatile precursors to rare bicyclic pyrazoles obtained in modest to good yields via condensation with aryl hydrazines in the presence of Lawesson’s reagent.
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Dar’in D, Kantin G, Krasavin M. Practical Application of the Aqueous ‘Sulfonyl-Azide-Free’ (SAFE) Diazo Transfer Protocol to Less α-C–H Acidic Ketones and Esters. SYNTHESIS-STUTTGART 2019. [DOI: 10.1055/s-0039-1690613] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The earlier described ‘sulfonyl-azide-free’ (‘SAFE’) protocol for diazo transfer to CH-acidic 1,3-dicarbonyl compounds (and their similarly activated congeners) has been extended to the less reactive monocarbonyl substrates, which previously required a separate activation step. Formylation in situ, followed by the addition of an optimized amount of the ‘SAFE cocktail’ (obtained by mixing sodium azide, potassium carbonate, and m-carboxybenzenesulfonyl chloride in water) led to the formation of the desired diazo compounds, which were isolated by extraction in moderate to excellent yields, and, in most cases, with no need for additional purification.
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Synofzik J, Dar’in D, Novikov MS, Kantin G, Bakulina O, Krasavin M. α-Acyl-α-diazoacetates in Transition-Metal-Free β-Lactam Synthesis. J Org Chem 2019; 84:12101-12110. [DOI: 10.1021/acs.joc.9b02030] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Judith Synofzik
- Saint Petersburg State University, Saint Petersburg 199034, Russia
| | - Dmitry Dar’in
- Saint Petersburg State University, Saint Petersburg 199034, Russia
| | | | - Grigory Kantin
- Saint Petersburg State University, Saint Petersburg 199034, Russia
| | - Olga Bakulina
- Saint Petersburg State University, Saint Petersburg 199034, Russia
| | - Mikhail Krasavin
- Saint Petersburg State University, Saint Petersburg 199034, Russia
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Chuprun S, Dar’in D, Kantin G, Krasavin M. [3+2]-Cycloaddition of α-Diazocarbonyl Compounds with Arenediazonium Salts Catalyzed by Silver Nitrate Delivers 2,5-Disubstituted Tetrazoles. SYNTHESIS-STUTTGART 2019. [DOI: 10.1055/s-0039-1690159] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
[3+2]-Cycloaddition of arenediazonium salts with diazo compounds (earlier exemplified only for trimethylsilyldiazomethane and 2,2,2-trifluorodiazoethane) has been developed to include a wide range of readily available α-diazocarbonyl compounds. The resulting 2-aryl-5-acyl-2H-tetrazoles are of high value in medicinal chemistry.
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Safrygin A, Dar'in D, Kantin G, Krasavin M. α-Diazo-β-oxosulfones as Partners in the Wolff 1,2,3-Triazole Synthesis and the Wolff Rearrangement in the Presence of Aromatic Amines. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900698] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Alexander Safrygin
- Saint Petersburg State University; 199034 Saint Petersburg Russian Federation
| | - Dmitry Dar'in
- Saint Petersburg State University; 199034 Saint Petersburg Russian Federation
| | - Grigory Kantin
- Saint Petersburg State University; 199034 Saint Petersburg Russian Federation
| | - Mikhail Krasavin
- Saint Petersburg State University; 199034 Saint Petersburg Russian Federation
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Golushko A, Dar’in D, Kantin G, Guranova N, Vasilyev AV, Krasavin M. Medicinally Relevant Modification of the Isoquinoline-1,3-dione Scaffold via Metal-Free Arylation and Fluorination of Diazo Homophthalimides in Brønsted Acids. SYNTHESIS-STUTTGART 2019. [DOI: 10.1055/s-0037-1611882] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Protonation of 4-diazoisoquinoline-1,3(2H,4H)-diones in Brønsted acids gives rise to diazonium cations that can be trapped with arenes to give 4-arylisoquinoline-1,3(2H,4H)-diones (homophthalimides). This provides a new, metal-free approach to 4-aryltetrahydroisoquinolines (obtainable from respective homophthalimides by reduction). Similarly, a fluorine atom can be introduced by trapping the diazonium cation with HF. This led to the preparation of the first examples of 4-monofluoro-substituted isoquinoline-1,3-diones (as well as their 4-bromo-4-fluoro and 4-chloro-4-fluoro variants), important carboxylic acid isosteres on their own and precursors of useful 4-fluorotetrahydroisoquinoline building blocks.
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Affiliation(s)
| | | | | | | | - Aleksander V. Vasilyev
- Saint Petersburg State University
- Department of Chemistry, Saint Petersburg State Forest Technical University
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Shershnev I, Dar'in D, Chuprun S, Kantin G, Bakulina O, Krasavin M. The use of ∝-diazo-γ-butyrolactone in the Büchner-Curtius-Schlotterbeck reaction of cyclic ketones: A facile entry into spirocyclic scaffolds. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.06.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Guranova NI, Dar'in D, Kantin G, Novikov AS, Bakulina O, Krasavin M. Fused vs. spiro: Kinetic, not thermodynamic preference may direct the reaction of α-carbonyl oxonium ylides. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.05.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Dar'in D, Kantin G, Krasavin M. A 'sulfonyl-azide-free' (SAFE) aqueous-phase diazo transfer reaction for parallel and diversity-oriented synthesis. Chem Commun (Camb) 2019; 55:5239-5242. [PMID: 30985842 DOI: 10.1039/c9cc02042j] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Diazo transfer reactions are notoriously associated with the use of potentially explosive sulfonyl azides. The first 'sulfonyl-azide-free' (SAFE) protocol for producing diazo compounds from their active-methylene precursors via the Regitz diazo transfer reaction was developed and has displayed a remarkable substrate scope. It can be applied to generating arrays of diazo compounds for further evolution via combinatorial chemistry and a range of scaffold-generating transformations.
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Affiliation(s)
- Dmitry Dar'in
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russian Federation.
| | - Grigory Kantin
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russian Federation.
| | - Mikhail Krasavin
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russian Federation.
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Affiliation(s)
- Daniil Zhukovsky
- Saint Petersburg State University; 199034 Saint Petersburg Russian Federation
| | - Dmitry Dar'in
- Saint Petersburg State University; 199034 Saint Petersburg Russian Federation
| | - Grigory Kantin
- Saint Petersburg State University; 199034 Saint Petersburg Russian Federation
| | - Mikhail Krasavin
- Saint Petersburg State University; 199034 Saint Petersburg Russian Federation
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Guranova NI, Dar’in D, Kantin G, Novikov AS, Bakulina O, Krasavin M. Rh(II)-Catalyzed Spirocyclization of α-Diazo Homophthalimides with Cyclic Ethers. J Org Chem 2019; 84:4534-4542. [DOI: 10.1021/acs.joc.9b00245] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Natalia I. Guranova
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Dmitry Dar’in
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Grigory Kantin
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | | | - Olga Bakulina
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Mikhail Krasavin
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
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Dar’in D, Kantin G, Bakulina O, Žalubovskis R, Krasavin M. Flexible Entry into 3-Arylpent-2-enedioic Acids via Heck–Matsuda Arylation of Dimethyl Glutaconate with Arenediazonium Tosylates. SYNTHESIS-STUTTGART 2019. [DOI: 10.1055/s-0037-1611211] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
For the preparation of compound libraries of Michael acceptors with tunable reactivity toward nuclophilic selenocysteine residue of thioredoxin reductase, a range of 3-arylglutaconic acids were required. The existing methods at the time had limited scope or involved several steps. A hitherto undescribed protocol for direct palladium(II) acetate-catalyzed arylation of glutaconic acid dimethyl ester at position 3 has been developed with a diverse set of arenediazonium tosylates followed by hydrolysis. This generally good-yielding two-step sequence displayed a propensity to deliver E-configured coupling products while compounds mostly featured in the literature were predominantly Z-configured. The possibility for preparing a library of 4-arylpyridine-2,6(1H,3H)-diones has been exemplified.
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