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Iwabuchi S, Morofuji T, Kano N. Synthesis, structure, and alkynylation reactivity of alkynyl-silicate, -germanate, and -stannate. Dalton Trans 2024; 53:10829-10833. [PMID: 38898710 DOI: 10.1039/d4dt01688b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
The first anionic pentacoordinated group 14 compounds bearing a phenylethynyl substituent were successfully synthesized and crystallographically characterized. The synthesized ate-type compounds were stable in air, water, and some acids, allowing their application as reagents for the nucleophilic alkynylation of carbon electrophiles.
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Affiliation(s)
- Shuta Iwabuchi
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan.
| | - Tatsuya Morofuji
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan.
| | - Naokazu Kano
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan.
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2
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Lan H, Huo X, Jia Y, Wang D. Silyl Radical Generation from Silylboronic Pinacol Esters through Substitution with Aminyl Radicals. Org Lett 2024; 26:1011-1016. [PMID: 38289174 DOI: 10.1021/acs.orglett.3c04085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2024]
Abstract
A novel strategy was developed to generate silyl radicals from silylboronic pinacol esters (SPEs) through nucleohomolytic substitution of boron with aminyl radicals. We successfully applied this strategy to obtain diverse organosilicon compounds using SPEs and N-nitrosamines under photoirradiation without any catalyst. The ability to access silyl radicals offers a new perspective for chemists to rapidly construct Si-X bonds.
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Affiliation(s)
- Hongyan Lan
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, China
| | - Xiangyu Huo
- College of Pharmacy, Nankai University, Tianjin 300350, China
| | - Yinggang Jia
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, China
| | - Dingyi Wang
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, China
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3
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Li D, Liu C, Guo T, Zhu J, Guo J, Luo T, Liu Y, Shen W, Jiang B, Wang W, Yin Q, Zhang Y. Structural Modification of Noscapine via Photoredox/Nickel Dual Catalysis for the Discovery of S-Phase Arresting Agents. ACS Med Chem Lett 2024; 15:230-238. [PMID: 38352836 PMCID: PMC10860181 DOI: 10.1021/acsmedchemlett.3c00462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 12/28/2023] [Accepted: 01/02/2024] [Indexed: 02/16/2024] Open
Abstract
Herein, we disclose a powerful strategy for the functionalization of the antitumor natural alkaloid noscapine by utilizing photoredox/nickel dual-catalytic coupling technology. A small collection of 37 new noscapinoids with diverse (hetero)alkyl and (hetero)cycloalkyl groups and enhanced sp3 character was thus synthesized. Further in vitro antiproliferative activity screening and SAR study enabled the identification of 6o as a novel, potent, and less-toxic anticancer agent. Furthermore, 6o exerts superior cellular activity via an unexpected S-phase arrest mechanism and could significantly induce cell apoptosis in a dose-dependent manner, thereby further highlighting its potential in drug discovery as a promising lead compound.
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Affiliation(s)
- Defeng Li
- Shanghai
Frontiers Science Center of Optogenetic Techniques for Cell Metabolism,
Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Chuanxu Liu
- Department
of Lymphoma, Fudan University Shanghai Cancer
Center, Shanghai 200032, P. R.
China
| | - Tingyu Guo
- Shanghai
Frontiers Science Center of Optogenetic Techniques for Cell Metabolism,
Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Jiajie Zhu
- Shanghai
Frontiers Science Center of Optogenetic Techniques for Cell Metabolism,
Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Jiaqi Guo
- Shanghai
Frontiers Science Center of Optogenetic Techniques for Cell Metabolism,
Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Ting Luo
- Shanghai
Frontiers Science Center of Optogenetic Techniques for Cell Metabolism,
Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Yuhuan Liu
- Shanghai
Frontiers Science Center of Optogenetic Techniques for Cell Metabolism,
Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Wenhao Shen
- Shanghai
Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, P. R. China
| | - Biao Jiang
- Shanghai
Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, P. R. China
| | - Wei Wang
- Department
of Pharmacology and Toxicology and BIO5 Institute, University of Arizona, Tucson, Arizona 85721-0207, United States
| | - Qianqian Yin
- Shanghai
Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, P. R. China
| | - Yongqiang Zhang
- Shanghai
Frontiers Science Center of Optogenetic Techniques for Cell Metabolism,
Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
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Biremond T, Riomet M, Jubault P, Poisson T. Photocatalytic and Electrochemical Borylation and Silylation Reactions. CHEM REC 2023; 23:e202300172. [PMID: 37358334 DOI: 10.1002/tcr.202300172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/05/2023] [Indexed: 06/27/2023]
Abstract
Due to their high versatility borylated and silylated compounds are inevitable synthons for organic chemists. To escape the classical hydroboration/hydrosilylation paradigm, chemists turned their attention to more modern and green methods such as photoredox chemistry and electrosynthesis. This account focuses on novel methods for the generation of boryl and silyl radicals to forge C-B and C-Si bonds from our group.
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Affiliation(s)
- Tony Biremond
- Normandie Univ., INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
| | - Margaux Riomet
- Normandie Univ., INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
| | - Philippe Jubault
- Normandie Univ., INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
| | - Thomas Poisson
- Normandie Univ., INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
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5
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Uchikura T, Nakamura H, Sakai H, Akiyama T. 2-Silylated Dihydroquinazolinone as a Photocatalytic Energy Transfer Enabled Radical Hydrosilylation Reagent. Chemistry 2023; 29:e202301090. [PMID: 37269182 DOI: 10.1002/chem.202301090] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 06/01/2023] [Accepted: 06/02/2023] [Indexed: 06/04/2023]
Abstract
The hydrosilylation of alkenes is one of the most important methods for the synthesis of organosilicon compounds. In addition to the platinum-catalyzed hydrosilylation, silyl radical addition reactions are notable as economic reactions. An efficient and widely applicable silyl radical addition reaction was developed by using 2-silylated dihydroquinazolinone derivatives under photocatalytic conditions. Electron-deficient alkenes and styrene derivatives underwent hydrosilylation to give addition products in good to high yields. Mechanistic studies indicated that the photocatalyst functioned not as a photoredox catalyst but as an energy transfer catalyst. DFT calculations clarified that the triplet excited state of 2-silylated dihydroquinazolinone derivatives released a silyl radical through the homolytic cleavage of a carbon-silicon bond, and this was followed by the hydrogen atom transfer pathway, not the redox pathway.
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Affiliation(s)
- Tatsuhiro Uchikura
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1, Mejiro, 171-8588, Toshima-ku, Tokyo, Japan
| | - Haruka Nakamura
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1, Mejiro, 171-8588, Toshima-ku, Tokyo, Japan
| | - Hinata Sakai
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1, Mejiro, 171-8588, Toshima-ku, Tokyo, Japan
| | - Takahiko Akiyama
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1, Mejiro, 171-8588, Toshima-ku, Tokyo, Japan
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