1
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Quan X, Shen K, Yang WL, Li Z, Maienfisch P. Design, Synthesis, and Biological Activity of Silicon-Containing Carboxamide Fungicides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024. [PMID: 39057603 DOI: 10.1021/acs.jafc.4c03001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/28/2024]
Abstract
Bioisosteric silicon replacement has proven to be a valuable strategy in the design of bioactive molecules for crop protection and drug development. Twenty-one novel carboxamides possessing a silicon-containing biphenyl moiety were synthesized and tested for their antifungal activity and succinate dehydrogenase (SDH) enzymatic inhibitory activity. Among these novel succinate dehydrogenase inhibitors (SDHIs), compounds 3a, 3e, 4l, and 4o possessing appropriate clog P and topological polar surface area values showed excellent inhibitory effects against Rhizoctonia solani, Sclerotinia sclerotiorum, Botrytis cinerea, and Fusarium graminearum at 10 mg/L in vitro, and the EC50 values of 4l and 4o were 0.52 and 0.16 mg/L against R. solani and 0.066 and 0.054 mg/L against S. sclerotiorum, respectively, which were superior to those of Boscalid. Moreover, compound 3a demonstrated superior SDH enzymatic inhibitory activity (IC50 = 8.70 mg/L), exhibiting 2.54-fold the potency of Boscalid (IC50 = 22.09 mg/L). Docking results and scanning electron microscope experiments revealed similar mode of action between compound 3a and Boscalid. The new silicon-containing carboxamide 3a is a promising SDHI candidate that deserves further investigation.
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Affiliation(s)
- Xiaocao Quan
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Kunkun Shen
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Wu-Lin Yang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Peter Maienfisch
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
- CreInSol Consulting & Biocontrols, CH-4118 Rodersdorf, Switzerland
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2
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Shen B, Pan D, Xie W, Li XX, Yu S, Huang G, Li X. Rhodium-Catalyzed Enantioselective Formal [4+1] Cyclization of Benzyl Alcohols and Benzaldimines: Facile Access to Silicon-Stereogenic Heterocycles. Angew Chem Int Ed Engl 2024; 63:e202315230. [PMID: 37938113 DOI: 10.1002/anie.202315230] [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: 10/10/2023] [Revised: 11/06/2023] [Accepted: 11/08/2023] [Indexed: 11/09/2023]
Abstract
The carbon-to-silicon switch in formation of bioactive sila-heterocycles with a silicon-stereogenic center has garnered significant interest in drug discovery. However, metal-catalyzed synthesis of such scaffolds is still in its infancy. Herein, a rhodium-catalyzed enantioselective formal [4+1] cyclization of benzyl alcohols and benzaldimines has been realized by enantioselective difunctionalization of a secondary silane reagent, affording chiral-at-silicon cyclic silyl ethers and sila-isoindolines, respectively. Mechanistic studies reveal a dual role of the rhodium-hydride catalyst. The coupling system proceeds via rhodium-catalyzed enantio-determining dehydrogenative OH silylation of the benzyl alcohol or hydrosilylation of the imine to give an enantioenriched silyl ether or silazane intermediate, respectively. The same rhodium catalyst also enables subsequent intramolecular cyclative C-H silylation directed by the pendent Si-H group. Experimental and DFT studies have been conducted to explore the mechanism of the OH bond silylation of benzyl alcohol, where the Si-O reductive elimination from a Rh(III) hydride intermediate has been established as the enantiodetermining step.
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Affiliation(s)
- Bingxue Shen
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, 266237, China
| | - Deng Pan
- Department of Chemistry, School of Science and Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin, 300072, China
| | - Wanying Xie
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, 266237, China
| | - Xiao-Xi Li
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, 266237, China
| | - Songjie Yu
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, 266237, China
| | - Genping Huang
- Department of Chemistry, School of Science and Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin, 300072, China
| | - Xingwei Li
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, 266237, China
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China
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3
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Matsumoto Y, Hashimoto Y, Fujii S. Development of subtype-selective estrogen receptor modulators using the bis(4-hydroxyphenyl)silanol core as a stable isostere of bis(4-hydroxyphenyl)methanol. RSC Adv 2023; 13:27359-27362. [PMID: 37705989 PMCID: PMC10496907 DOI: 10.1039/d3ra04656g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 08/30/2023] [Indexed: 09/15/2023] Open
Abstract
In this study, we synthesized and evaluated silanol-based bisphenol derivatives as stable isosteres of bis(4-hydroxyphenyl)methanol. The developed silanols exhibited estrogen receptor (ER)-modulating activity. Among them, bis(4-hydroxyphenyl)(methyl)silanol (5a) showed a characteristic ER subtype selectivity, namely, antagonistic activity toward ERα and agonistic activity toward ERβ. Docking simulation indicated that the silanol moiety plays a key role in this selectivity. Our results suggest that silanol-based bisphenols offer a unique scaffold for biologically active compounds.
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Affiliation(s)
- Yuichiro Matsumoto
- Institute for Quantitative Biosciences, The University of Tokyo 1-1-1 Yayoi, Bunkyo-ku Tokyo 113-0032 Japan
| | - Yuichi Hashimoto
- Institute for Quantitative Biosciences, The University of Tokyo 1-1-1 Yayoi, Bunkyo-ku Tokyo 113-0032 Japan
| | - Shinya Fujii
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU) 2-3-10 Kanda-Surugadai, Chiyoda-ku Tokyo 101-0062 Japan
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4
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Fotie J, Matherne CM, Wroblewski JE. Silicon switch: Carbon-silicon Bioisosteric replacement as a strategy to modulate the selectivity, physicochemical, and drug-like properties in anticancer pharmacophores. Chem Biol Drug Des 2023; 102:235-254. [PMID: 37029092 DOI: 10.1111/cbdd.14239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 03/19/2023] [Accepted: 03/21/2023] [Indexed: 04/09/2023]
Abstract
Bioisosterism is one of the leading strategies in medicinal chemistry for the design and modification of drugs, consisting in replacing an atom or a substituent with a different atom or a group with similar chemical properties and an inherent biocompatibility. The objective of such an exercise is to produce a diversity of molecules with similar behavior while enhancing the desire biological and pharmacological properties, without inducing significant changes to the chemical framework. In drug discovery and development, the optimization of the absorption, distribution, metabolism, elimination, and toxicity (ADMETox) profile is of paramount importance. Silicon appears to be the right choice as a carbon isostere because they possess very similar intrinsic properties. However, the replacement of a carbon by a silicon atom in pharmaceuticals has proven to result in improved efficacy and selectivity, while enhancing physicochemical properties and bioavailability. The current review discusses how silicon has been strategically introduced to modulate drug-like properties of anticancer agents, from a molecular design strategy, biological activity, computational modeling, and structure-activity relationships perspectives.
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Affiliation(s)
- Jean Fotie
- Department of Chemistry and Physics, Southeastern Louisiana University, Hammond, Louisiana, USA
| | - Caitlyn M Matherne
- Department of Chemistry and Physics, Southeastern Louisiana University, Hammond, Louisiana, USA
| | - Jordan E Wroblewski
- Department of Chemistry and Physics, Southeastern Louisiana University, Hammond, Louisiana, USA
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5
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Direct synthesis of sila-benzoazoles through hydrosilylation and rearrangement cascade reaction of benzoazoles and silanes. Nat Commun 2023; 14:703. [PMID: 36759604 PMCID: PMC9911738 DOI: 10.1038/s41467-023-36360-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Accepted: 01/30/2023] [Indexed: 02/11/2023] Open
Abstract
Sila-isosteres have attracted increasing attention due to their potential application in a variety of fields and their different properties compared to their carbon-containing analogs. However, the preparation of these silicon-containing compound remains challenging and thus the development of alternative synthetic methodologies is desirable. Here, we employ B(C6F5)3 as catalyst to enable the synthesis of highly functionalized sila-benzoazoles via hydrosilylation and rearrangement cascade reaction of benzoazoles and commercially available silanes. This strategy also exhibits remarkable features such as 100% atom-economy, good functional group tolerance, broad substrate scope, easy scale-up and good catalytic performance, demonstrating its potential application in sila-isostere synthesis.
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6
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Yamagishi H, Harata F, Shimokawa J, Yorimitsu H. Diphenylsilylsilanolates Enable the Transfer of a Wide Range of Silyl Groups. Org Lett 2023; 25:11-15. [PMID: 36446045 DOI: 10.1021/acs.orglett.2c03558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Development of silylating reagents that can transfer a wide range of silyl groups has been a long-standing challenge. Herein we report sodium diphenylsilylsilanolates as new stable and handy silylating reagents that could be synthesized from chlorosilanes. The new reagents retain the ability of dimethylsilylsilanolates for the delivery of a variety of silyl groups in palladium-catalyzed silylation of aryl bromides irrespective of the steric and electronic properties of silyl groups to be transferred.
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Affiliation(s)
- Hiroki Yamagishi
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan
| | - Fuyuki Harata
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan
| | - Jun Shimokawa
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan
| | - Hideki Yorimitsu
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan
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7
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Antico E, Leutzsch M, Wessel N, Weyhermüller T, Werlé C, Leitner W. Selective oxidation of silanes into silanols with water using [MnBr(CO) 5] as a precatalyst. Chem Sci 2022; 14:54-60. [PMID: 36605749 PMCID: PMC9769106 DOI: 10.1039/d2sc05959b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 11/18/2022] [Indexed: 12/03/2022] Open
Abstract
The development of earth-abundant catalysts for the selective conversion of silanes to silanols with water as an oxidant generating valuable hydrogen as the only by-product continues to be a challenge. Here, we demonstrate that [MnBr(CO)5] is a highly active precatalyst for this reaction, operating under neutral conditions and avoiding the undesired formation of siloxanes. As a result, a broad substrate scope, including primary and secondary silanes, could be converted to the desired products. The turnover performances of the catalyst were also examined, yielding a maximum TOF of 4088 h-1. New light was shed on the debated mechanism of the interaction between [MnBr(CO)5] and Si-H bonds based on the reaction kinetics (including KIEs of PhMe2SiD and D2O) and spectroscopic techniques (FT-IR, GC-TCD, 1H-, 29Si-, and 13C-NMR). The initial activation of [MnBr(CO)5] was found to result from the formation of a manganese(i) hydride species and R3SiBr, and the experimental data are most consistent with a catalytic cycle comprising a cationic tricarbonyl Mn(i) unit as the active framework.
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Affiliation(s)
- Emanuele Antico
- Max Planck Institute for Chemical Energy ConversionStiftstr. 34–3645470 Mülheim an der RuhrGermany,Institut für Technische und Makromolekulare Chemie (ITMC), RWTH Aachen UniversityWorringer Weg 252074 AachenGermany
| | - Markus Leutzsch
- Max-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 145470 Mülheim an der RuhrGermany
| | - Niklas Wessel
- Max Planck Institute for Chemical Energy ConversionStiftstr. 34–3645470 Mülheim an der RuhrGermany,Institut für Technische und Makromolekulare Chemie (ITMC), RWTH Aachen UniversityWorringer Weg 252074 AachenGermany
| | - Thomas Weyhermüller
- Max Planck Institute for Chemical Energy ConversionStiftstr. 34–3645470 Mülheim an der RuhrGermany
| | - Christophe Werlé
- Max Planck Institute for Chemical Energy ConversionStiftstr. 34–3645470 Mülheim an der RuhrGermany,Ruhr University BochumUniversitätsstr. 15044801 BochumGermany
| | - Walter Leitner
- Max Planck Institute for Chemical Energy ConversionStiftstr. 34–3645470 Mülheim an der RuhrGermany,Institut für Technische und Makromolekulare Chemie (ITMC), RWTH Aachen UniversityWorringer Weg 252074 AachenGermany
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8
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Astakhova VV, Moskalik MY, Sterkhova IV, Shainyan BA. New oxidative reactions of monovinylsilanes with sulfonamides. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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9
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10
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Ma C, Fan Y, Zheng C, Gao L, Wang W, Ke B, Song Z. (4 + 2) Annulation of Cl -NH 3+CH 2SiMe 2CH 2Cl and Propynones for the Synthesis of 1,3-Azasilinones. Org Lett 2022; 24:6631-6636. [PMID: 36054503 DOI: 10.1021/acs.orglett.2c02665] [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
A useful 1,3-N,Si reagent (Cl-NH3+CH2SiMe2CH2Cl) and its (4 + 2) annulation with propynones have been developed. The (4 + 2) annulation is promoted by NaHCO3 via an intermolecular N-1,4-addition/intramolecular alkylation process, leading to 1,3-azasilinones in good yields. Diverse functionalization of the alkene, carbonyl, and nitrogen moieties on the 1,3-azasilinone has been demonstrated, showcasing the potential of the approach in the synthesis of bioactive molecules containing silaazacycles.
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Affiliation(s)
- Chang Ma
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug, and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yu Fan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug, and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Chunmei Zheng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug, and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Lu Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug, and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Wanshu Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug, and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Bowen Ke
- Department of Anesthesiology, Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Zhenlei Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug, and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
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11
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Ding L, Niu K, Liu Y, Wang Q. Visible Light-Induced Hydrosilylation of Electron-Deficient Alkenes by Iron Catalysis. CHEMSUSCHEM 2022; 15:e202200367. [PMID: 35302291 DOI: 10.1002/cssc.202200367] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 03/15/2022] [Indexed: 06/14/2023]
Abstract
Herein, we reported a method for iron-catalyzed, visible-light-induced hydrosilylation reactions of electron-deficient alkenes to produce value-added silicon compounds. Alkenes bearing functional groups with different steric properties were suitable substrates, as were derivatives of structurally complex natural products. Mechanistic studies showed that chlorine radicals generated by iron-catalyzed ligand-to-metal charge transfer in the presence of lithium chloride promoted the formation of silyl radicals.
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Affiliation(s)
- Ling Ding
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin, 300071, P. R. China
| | - Kaikai Niu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin, 300071, P. R. China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin, 300071, P. R. China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin, 300071, P. R. China
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12
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Cui D, Feng Y, Gan Y, Yin J, Wang W, Fan Y, Gao L, Ke B, Song Z. (3 + 2)-Annulation of 1,3- N, Si-tetraorganosilane reagents TsHNCH 2SiBnR 1R 2 with arynes for efficient synthesis of 3-silaindolines. Org Chem Front 2022. [DOI: 10.1039/d2qo01075e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
1,3-N,Si-Tetraorganosilane reagents TsHNCH2SiBnR1R2 were developed as robust synthons to prepare 3-silaindolines via a Cs2CO3-promoted (3 + 2)-annulation reaction with arynes.
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Affiliation(s)
- Deyun Cui
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Ying Feng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Yu Gan
- Department of Anesthesiology, Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan university, Chengdu, 610041, China
| | - Jiaqi Yin
- Department of Anesthesiology, Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan university, Chengdu, 610041, China
| | - Wanshu Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Yu Fan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Lu Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Bowen Ke
- Department of Anesthesiology, Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan university, Chengdu, 610041, China
| | - Zhenlei Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
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13
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Sarkar W, Mishra A, Bhowmik A, Deb I. Copper-Catalyzed Direct sp 2 C-H Silylation of Arylamides Using Disilanes. Org Lett 2021; 23:4521-4526. [PMID: 33984233 DOI: 10.1021/acs.orglett.1c01129] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A copper-catalyzed method for direct intermolecular ortho-silylation of benzamides has been developed that affords organosilane products in moderate to high yields. The key features include: (i) use of commercially available disilanes as a silicon source with 8-aminoquinoline as a bidentate directing group, (ii) use of earth-abundant first-row transition metal, (iii) operationally simple conditions without the need of an inert atmosphere, and (iv) tolerance of a wide range of functional groups. The practicality and effectiveness of this method have been demonstrated by a gram-scale experiment. This strategy, therefore, constitutes a convenient way of constructing C-Si bonds useful for synthetic organic chemistry.
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Affiliation(s)
- Writhabrata Sarkar
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Aniket Mishra
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Arup Bhowmik
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Indubhusan Deb
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
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14
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Dong X, Yuan X, Song Z, Wang Q. The development of an Amber-compatible organosilane force field for drug-like small molecules. Phys Chem Chem Phys 2021; 23:12582-12591. [PMID: 34037028 DOI: 10.1039/d1cp01169c] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As members of the group IVA elements, silicon and carbon have long been thought of as isosteres of each other in drug design. However, the lack of silicon parameters in current main stream force fields hinders the computational study of this important element in drug discovery. Thus, in this study, we attempted to supplement the parameters of organosilanes in the General Amber Force Field (GAFF2). The parameters have been designed following the principles of GAFF2 to make it compatible with the Amber force field family. The accuracy of the parameters was discussed by comparing the pair interaction energy, the liquid properties, and the structures and alchemical binding free energy differences for a set of protein-ligand complexes.
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Affiliation(s)
- Xue Dong
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China.
| | - Xinghang Yuan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China.
| | - Zhenlei Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China.
| | - Qiantao Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China.
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15
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Fang H, Xie K, Kemper S, Oestreich M. Aufeinanderfolgende β,β′‐selektive C(sp
3
)‐H‐Silylierung von tertiären Aminen mit Dihydrosilanen katalysiert durch B(C
6
F
5
)
3. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202016664] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Huaquan Fang
- Institut für Chemie Technische Universität Berlin Straße des 17. Juni 115 10623 Berlin Deutschland
| | - Kaixue Xie
- Institut für Chemie Technische Universität Berlin Straße des 17. Juni 115 10623 Berlin Deutschland
| | - Sebastian Kemper
- Institut für Chemie Technische Universität Berlin Straße des 17. Juni 115 10623 Berlin Deutschland
| | - Martin Oestreich
- Institut für Chemie Technische Universität Berlin Straße des 17. Juni 115 10623 Berlin Deutschland
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16
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Fang H, Xie K, Kemper S, Oestreich M. Consecutive β,β'-Selective C(sp 3 )-H Silylation of Tertiary Amines with Dihydrosilanes Catalyzed by B(C 6 F 5 ) 3. Angew Chem Int Ed Engl 2021; 60:8542-8546. [PMID: 33604987 PMCID: PMC8048813 DOI: 10.1002/anie.202016664] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/16/2021] [Indexed: 01/05/2023]
Abstract
Tris(pentafluorophenyl)borane has been found to catalyze the two‐fold C(sp3)−H silylation of various trialkylamine derivatives with dihydrosilanes, furnishing the corresponding 4‐silapiperidines in decent yields. The multi‐step reaction cascade involves amine‐to‐enamine dehydrogenation at two alkyl residues and two electrophilic silylation reactions of those enamines, one inter‐ and one intramolecular.
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Affiliation(s)
- Huaquan Fang
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623, Berlin, Germany
| | - Kaixue Xie
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623, Berlin, Germany
| | - Sebastian Kemper
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623, Berlin, Germany
| | - Martin Oestreich
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623, Berlin, Germany
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17
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Luo G, Chen L, Li Y, Fan Y, Wang D, Yang Y, Gao L, Jiang R, Song Z. Asymmetric total synthesis and antidepressant activity of (−)-sila-mesembranol bearing a silicon stereocenter. Org Chem Front 2021. [DOI: 10.1039/d1qo00682g] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Asymmetric total synthesis of (−)-sila-mesembranol, the silicon analog of the natural alkaloid (−)-mesembranol has been achieved in 3.3% yield over 11 steps. The synthetic (−)-sila-mesembranol in mice exhibits better antidepressant effects than its carbon counterpart.
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Affiliation(s)
- Gan Luo
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Lingmin Chen
- Laboratory of Anesthesia and Critical Care Medicine, Department of Anesthesiology, National-Local Joint Engineering Research Center of Translational Medicine of Anesthesiology, West China Hospital of Sichuan University, Chengdu, Sichuan, 610000, China
| | - Yi Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Yu Fan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Duyang Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Yufan Yang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Lu Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Ruotian Jiang
- Laboratory of Anesthesia and Critical Care Medicine, Department of Anesthesiology, National-Local Joint Engineering Research Center of Translational Medicine of Anesthesiology, West China Hospital of Sichuan University, Chengdu, Sichuan, 610000, China
| | - Zhenlei Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
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18
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Mbaba M, Golding TM, Smith GS. Recent Advances in the Biological Investigation of Organometallic Platinum-Group Metal (Ir, Ru, Rh, Os, Pd, Pt) Complexes as Antimalarial Agents. Molecules 2020; 25:molecules25225276. [PMID: 33198217 PMCID: PMC7698227 DOI: 10.3390/molecules25225276] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 11/08/2020] [Accepted: 11/09/2020] [Indexed: 01/06/2023] Open
Abstract
In the face of the recent pandemic and emergence of infectious diseases of viral origin, research on parasitic diseases such as malaria continues to remain critical and innovative methods are required to target the rising widespread resistance that renders conventional therapies unusable. The prolific use of auxiliary metallo-fragments has augmented the search for novel drug regimens in an attempt to combat rising resistance. The development of organometallic compounds (those containing metal-carbon bonds) as antimalarial drugs has been exemplified by the clinical development of ferroquine in the nascent field of Bioorganometallic Chemistry. With their inherent physicochemical properties, organometallic complexes can modulate the discipline of chemical biology by proffering different modes of action and targeting various enzymes. With the beneficiation of platinum group metals (PGMs) in mind, this review aims to describe recent studies on the antimalarial activity of PGM-based organometallic complexes. This review does not provide an exhaustive coverage of the literature but focusses on recent advances of bioorganometallic antimalarial drug leads, including a brief mention of recent trends comprising interactions with biomolecules such as heme and intracellular catalysis. This resource can be used in parallel with complementary reviews on metal-based complexes tested against malaria.
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19
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Shainyan BA. Silacyclohexanes, Sila(hetero)cyclohexanes and Related Compounds: Structure and Conformational Analysis. Molecules 2020; 25:molecules25071624. [PMID: 32244789 PMCID: PMC7180822 DOI: 10.3390/molecules25071624] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 03/23/2020] [Accepted: 03/25/2020] [Indexed: 12/04/2022] Open
Abstract
Conformational analysis of Si-mono- and Si,Si-disubstituted silacyclohexanes as well as their analogues with a heteroatom(s) in the ring is reviewed with the focus on the recent results. Experimental measurements in the gas phase (gas electron diffraction, GED) and low temperature NMR spectroscopy (LT NMR) on 1H, 13C and 29Si nuclei are described along with theoretical calculations at the DFT and MP2 levels of theory. Structural and conformational specific features are shown to be principally different from those of the carbon predecessors—the corresponding cyclohexanes, oxanes, thianes and piperidines. The role of various effects (steric, hyperconjugation, stereoelectronic, electrostatic) is demonstrated.
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Affiliation(s)
- Bagrat A Shainyan
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of Russian Academy of Science, 1 Favorsky Street, 664033 Irkutsk, Russia
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20
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Zhou M, Park S, Dang L. Dual reactivity of B(C6F5)3 enables the silylative cascade conversion of N-aryl piperidines to sila-N-heterocycles: DFT calculations. Org Chem Front 2020. [DOI: 10.1039/c9qo01437c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A theoretical study reveals that the dual reactivity of B(C6F5)3 enables the unique silylative cascade conversion of N-aryl piperidines to bridged sila-N-heterocycles.
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Affiliation(s)
- Miaomiao Zhou
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province
- Shantou University
- Guangdong 515063
- P. R. China
| | - Sehoon Park
- Department of Chemistry
- Guangdong Technion Israel Institute of Technology
- Shantou 515063
- China
- Technion-Israel Institute of Technology
| | - Li Dang
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province
- Shantou University
- Guangdong 515063
- P. R. China
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21
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Li W, Chen W, Zhou B, Xu Y, Deng G, Liang Y, Yang Y. NBE-Controlled Palladium-Catalyzed Interannular Selective C-H Silylation: Access to Divergent Silicon-Containing 1,1'-Biaryl-2-Acetamides. Org Lett 2019; 21:2718-2722. [PMID: 30924667 DOI: 10.1021/acs.orglett.9b00690] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel palladium-catalyzed interannular selective C-H silylation of 1,1'-biaryl-2-acetamides is described. The combination of palladium catalyst with copper oxidant enables meta- or ortho-selective C-H silylation by employing hexamethyldisilane as a trimethylsilyl source, which relies on the control of NBE derivatives as a switch, thus providing straightforward access to divergent silicon-containing 1,1'-biaryl-2-acetamides.
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Affiliation(s)
- Wenguang Li
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province , Hunan Normal University , Changsha , Hunan 410081 , China
| | - Wenqi Chen
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province , Hunan Normal University , Changsha , Hunan 410081 , China
| | - Bang Zhou
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province , Hunan Normal University , Changsha , Hunan 410081 , China
| | - Yankun Xu
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province , Hunan Normal University , Changsha , Hunan 410081 , China
| | - Guobo Deng
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province , Hunan Normal University , Changsha , Hunan 410081 , China
| | - Yun Liang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province , Hunan Normal University , Changsha , Hunan 410081 , China
| | - Yuan Yang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province , Hunan Normal University , Changsha , Hunan 410081 , China
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22
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Liang JY, Shen SJ, Xu XH, Fu YL. Synthesis of Aryl Silacarboxylates via Palladium-Catalyzed C–O Bond Formation of Silacarboxylic Acids and Aryl Iodides. Org Lett 2018; 20:6627-6631. [DOI: 10.1021/acs.orglett.8b02464] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Xu Y, Liu X, Chen W, Deng G, Liang Y, Yang Y. Palladium/Norbornene Chemistry: Synthesis of Norbornene-Containing Arylsilanes Involving Double C–Si Bond Formation. J Org Chem 2018; 83:13930-13939. [DOI: 10.1021/acs.joc.8b02282] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Yankun Xu
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China
| | - Xiaodong Liu
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China
| | - Wenqi Chen
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China
| | - Guobo Deng
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China
| | - Yun Liang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China
| | - Yuan Yang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China
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24
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Synthesis, characterization and catalytic oxidation of organosilanes with a novel multilayer polyoxomolybdate containing mixed-valence antimony. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2018.04.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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Barraza SJ, Denmark SE. Synthesis, Reactivity, Functionalization, and ADMET Properties of Silicon-Containing Nitrogen Heterocycles. J Am Chem Soc 2018; 140:6668-6684. [PMID: 29763323 PMCID: PMC6011798 DOI: 10.1021/jacs.8b03187] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Silicon-containing compounds have been largely ignored in drug design and development, despite their potential to improve not only the potency but also the physicochemical and ADMET ( absorption, distribution, metabolism, excretion, toxicity) properties of drug-like candidates because of the unique characteristics of silicon. This deficiency is in large part attributable to a lack of general methods for synthesizing diverse organosilicon structures. Accordingly, a new building block strategy has been developed that diverges from traditional approaches to incorporation of silicon into drug candidates. Flexible, multi-gram-scale syntheses of silicon-containing tetrahydroquinoline and tetrahydroisoquinoline building blocks are described, along with methods by which diversely functionalized silicon-containing nitrogen heterocycles can be rapidly built using common reactions optimized to accommodate the properties of silicon. Furthermore, to better clarify the liabilities and advantages of silicon incorporation, select compounds and their carbon analogues were challenged in ADMET-focused biological studies.
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Affiliation(s)
- Scott J. Barraza
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Scott E. Denmark
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
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26
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Xiao G, Chen L, Deng G, Liu J, Liang Y. Disilylation of N-(2-Halophenyl)-2-phenylacrylamides with hexamethyldisilane via trapping the spirocyclic palladacycles. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.03.086] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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27
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Kirpichenko SV, Albanov AI, Shainyan BA. Mechanism of Protodephenylation of 1,3-Silaheterocyclohexanes. Effect of Heteroatom. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s1070363218010152] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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28
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Wu LJ, Yang Y, Song RJ, Yu JX, Li JH, He DL. An access to 1,3-azasiline-fused quinolinonesviaoxidative heteroannulation involving silyl C(sp3)–H functionalization. Chem Commun (Camb) 2018; 54:1367-1370. [DOI: 10.1039/c7cc08996a] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A Mn-promoted intermolecular oxidative heteroannulation ofN-(2-cyanoaryl)-acrylamides with tertiary silanes toward 1,3-azasiline-fused quinolinones is presented.
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Affiliation(s)
- Li-Jun Wu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University
- Changsha 410082
- China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University
- Nanchang 330063
| | - Yuan Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University
- Changsha 410082
- China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University
- Nanchang 330063
| | - Ren-Jie Song
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University
- Changsha 410082
- China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University
- Nanchang 330063
| | - Jiang-Xi Yu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University
- Changsha 410082
- China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University
- Nanchang 330063
| | - Jin-Heng Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University
- Changsha 410082
- China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University
- Nanchang 330063
| | - De-Liang He
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University
- Changsha 410082
- China
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29
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Li W, Xiao G, Deng G, Liang Y. Pd-Catalyzed disilylation: an efficient route to 2,2′-bis(trimethylsilyl)biphenyls via trapping transient dibenzopalladacyclopentadienes with hexamethyldisilane. Org Chem Front 2018. [DOI: 10.1039/c8qo00189h] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A palladium-catalyzed disilylation reaction of 2-iodobiphenyls with hexamethyldisilane via trapping transient dibenzopalladacyclopentadienes has been achieved.
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Affiliation(s)
- Wenguang Li
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research
- Ministry of Education
- Key Laboratory of the Assembly and Application of Organic Functional Molecules
- Hunan Normal University
| | - Genhua Xiao
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research
- Ministry of Education
- Key Laboratory of the Assembly and Application of Organic Functional Molecules
- Hunan Normal University
| | - Guobo Deng
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research
- Ministry of Education
- Key Laboratory of the Assembly and Application of Organic Functional Molecules
- Hunan Normal University
| | - Yun Liang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research
- Ministry of Education
- Key Laboratory of the Assembly and Application of Organic Functional Molecules
- Hunan Normal University
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30
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Deb A, Singh S, Seth K, Pimparkar S, Bhaskararao B, Guin S, Sunoj RB, Maiti D. Experimental and Computational Studies on Remote γ-C(sp3)–H Silylation and Germanylation of Aliphatic Carboxamides. ACS Catal 2017. [DOI: 10.1021/acscatal.7b03056] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Arghya Deb
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Sukriti Singh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Kapileswar Seth
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Sandeep Pimparkar
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Bangaru Bhaskararao
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Srimanta Guin
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Raghavan B. Sunoj
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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31
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Ramesh R, Reddy DS. Quest for Novel Chemical Entities through Incorporation of Silicon in Drug Scaffolds. J Med Chem 2017; 61:3779-3798. [DOI: 10.1021/acs.jmedchem.7b00718] [Citation(s) in RCA: 203] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Remya Ramesh
- CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi, 110 025, India
| | - D. Srinivasa Reddy
- CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi, 110 025, India
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32
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Moriyama K, Yasuhara Y, Ota H. Visualization of Protonation/Deprotonation of Active Pharmaceutical Ingredient in Solid State by Vapor Phase Amine-Selective Alkyne Tagging and Raman Imaging. J Pharm Sci 2017; 106:1778-1785. [DOI: 10.1016/j.xphs.2017.03.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 02/28/2017] [Accepted: 03/06/2017] [Indexed: 01/05/2023]
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33
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Abstract
Application of silyl functionalities is one of the most promising strategies among various ‘elements chemistry’ approaches for the development of novel and distinctive drug candidates. Replacement of one or more carbon atoms of various biologically active compounds with silicon (so-called sila-substitution) has been intensively studied for decades, and is often effective for alteration of activity profile and improvement of metabolic profile. In addition to simple C/Si exchange, several novel approaches for utilizing silicon in medicinal chemistry have been suggested in recent years, focusing on the intrinsic differences between silicon and carbon. Sila-substitution offers great potential for enlarging the chemical space of medicinal chemistry, and provides many options for structural development of drug candidates.
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34
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Lühning LH, Strehl J, Schmidtmann M, Doye S. Hydroaminoalkylation of Allylsilanes and a One-Pot Procedure for the Synthesis of 1,5-Benzoazasilepines. Chemistry 2017; 23:4197-4202. [PMID: 28124797 DOI: 10.1002/chem.201605923] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 01/26/2017] [Indexed: 11/11/2022]
Abstract
Allylsilanes undergo highly regioselective intermolecular alkene hydroaminoalkylation with secondary amines in the presence of a titanium mono(formamidinate) catalyst. Corresponding reactions of a suitable allyl(2-bromophenyl)silane which exclusively deliver the branched hydroaminoalkylation products combined with a subsequent Buchwald-Hartwig amination result in the development of an elegant one-pot procedure for the synthesis of literature-unknown silicon analogues of 1,5-benzodiazepines, the so-called 1,5-benzoazasilepines.
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Affiliation(s)
- Lars H Lühning
- Institut für Chemie, Universität Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26111, Oldenburg, Germany
| | - Julia Strehl
- Institut für Chemie, Universität Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26111, Oldenburg, Germany
| | - Marc Schmidtmann
- Institut für Chemie, Universität Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26111, Oldenburg, Germany
| | - Sven Doye
- Institut für Chemie, Universität Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26111, Oldenburg, Germany
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35
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Ramesh R, Shingare RD, Kumar V, Anand A, B S, Veeraraghavan S, Viswanadha S, Ummanni R, Gokhale R, Srinivasa Reddy D. Repurposing of a drug scaffold: Identification of novel sila analogues of rimonabant as potent antitubercular agents. Eur J Med Chem 2016; 122:723-730. [DOI: 10.1016/j.ejmech.2016.07.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 07/05/2016] [Accepted: 07/07/2016] [Indexed: 12/27/2022]
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36
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Shainyan BA. Structure and conformational analysis of silacyclohexanes and 1,3-silaheterocyclohexanes. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.06.079] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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37
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Altered activity profile of a tertiary silanol analog of multi-targeting nuclear receptor modulator T0901317. Bioorg Med Chem Lett 2016; 26:1817-20. [DOI: 10.1016/j.bmcl.2016.02.031] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 02/09/2016] [Accepted: 02/12/2016] [Indexed: 11/20/2022]
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38
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39
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Adams M, Barnard L, de Kock C, Smith PJ, Wiesner L, Chibale K, Smith GS. Cyclopalladated organosilane–tethered thiosemicarbazones: novel strategies for improving antiplasmodial activity. Dalton Trans 2016; 45:5514-20. [DOI: 10.1039/c5dt04918k] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ferrocenyl- and aryl-derived cyclopalladated organosilane thiosemicarbazone complexes were synthesised via C–H bond activation and evaluated for antiplasmodial activity.
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Affiliation(s)
- Muneebah Adams
- Department of Chemistry
- University of Cape Town
- Rondebosch 7701
- South Africa
| | - Linley Barnard
- Department of Chemistry
- University of Cape Town
- Rondebosch 7701
- South Africa
| | - Carmen de Kock
- Division of Pharmacology
- Department of Medicine
- University of Cape Town
- K45
- OMB
| | - Peter J. Smith
- Division of Pharmacology
- Department of Medicine
- University of Cape Town
- K45
- OMB
| | - Lubbe Wiesner
- Division of Pharmacology
- Department of Medicine
- University of Cape Town
- K45
- OMB
| | - Kelly Chibale
- Department of Chemistry
- University of Cape Town
- Rondebosch 7701
- South Africa
- Institute of Infectious Disease and Molecular Medicine
| | - Gregory S. Smith
- Department of Chemistry
- University of Cape Town
- Rondebosch 7701
- South Africa
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40
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Seetharamsingh B, Ramesh R, Dange SS, Khairnar PV, Singhal S, Upadhyay D, Veeraraghavan S, Viswanadha S, Vakkalanka S, Reddy DS. Design, Synthesis, and Identification of Silicon Incorporated Oxazolidinone Antibiotics with Improved Brain Exposure. ACS Med Chem Lett 2015; 6:1105-10. [PMID: 26617962 DOI: 10.1021/acsmedchemlett.5b00213] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Accepted: 10/26/2015] [Indexed: 01/06/2023] Open
Abstract
Therapeutic options for brain infections caused by pathogens with a reduced sensitivity to drugs are limited. Recent reports on the potential use of linezolid in treating brain infections prompted us to design novel compounds around this scaffold. Herein, we describe the design and synthesis of various oxazolidinone antibiotics with the incorporation of silicon. Our findings in preclinical species suggest that silicon incorporation is highly useful in improving brain exposures. Interestingly, three compounds from this series demonstrated up to a 30-fold higher brain/plasma ratio when compared to linezolid thereby indicating their therapeutic potential in brain associated disorders.
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Affiliation(s)
- B. Seetharamsingh
- CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
| | - Remya Ramesh
- CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
| | | | - Pankaj V. Khairnar
- CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
| | - Smita Singhal
- Daiichi Sankyo India Pharma Pvt. Ltd., Gurgaon, Haryana 122015, India
| | - Dilip Upadhyay
- Daiichi Sankyo India Pharma Pvt. Ltd., Gurgaon, Haryana 122015, India
| | - Sridhar Veeraraghavan
- Incozen Therapeutics Pvt. Ltd., Alexandria Knowledge Park, Turkapally, Rangareddy 500078, India
| | - Srikant Viswanadha
- Incozen Therapeutics Pvt. Ltd., Alexandria Knowledge Park, Turkapally, Rangareddy 500078, India
| | - Swaroop Vakkalanka
- Incozen Therapeutics Pvt. Ltd., Alexandria Knowledge Park, Turkapally, Rangareddy 500078, India
| | - D. Srinivasa Reddy
- CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
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41
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Chen C, Guan M, Zhang J, Wen Z, Zhao Y. Palladium-Catalyzed Oxalyl Amide Directed Silylation and Germanylation of Amine Derivatives. Org Lett 2015; 17:3646-9. [DOI: 10.1021/acs.orglett.5b01393] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Changpeng Chen
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Mingyu Guan
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Jingyu Zhang
- China College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China
| | - Zhenkang Wen
- College
of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Yingsheng Zhao
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
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42
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Wani WA, Jameel E, Baig U, Mumtazuddin S, Hun LT. Ferroquine and its derivatives: new generation of antimalarial agents. Eur J Med Chem 2015; 101:534-51. [PMID: 26188909 PMCID: PMC7115395 DOI: 10.1016/j.ejmech.2015.07.009] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 06/23/2015] [Accepted: 07/06/2015] [Indexed: 11/23/2022]
Abstract
Malaria has been teasing human populations from a long time. Presently, several classes of antimalarial drugs are available in market, but the issues of toxicity, lower efficacy and the resistance by malarial parasites have decreased their overall therapeutic indices. Thus, the search for new promising antimalarials continues, however, the battle against malaria is far from over. Ferroquine is a derivative of chloroquine with antimalarial properties. It is the most successful of the chloroquine derivatives. Not only ferroquine, but also its derivatives have shown promising potential as antimalarials of clinical interest. Presently, much research is dedicated to the development of ferroquine derivatives as safe alternatives to antimalarial chemotherapy. The present article describes the structural, chemical and biological features of ferroquine. Several classes of ferroquine derivatives including hydroxyferroquines, trioxaferroquines, chloroquine-bridged ferrocenophanes, thiosemicarbazone derivatives, ferrocene dual conjugates, 4-N-substituted derivatives, and others have been discussed. Besides, the mechanism of action of ferroquine has been discussed. A careful observation has been made into pharmacologically significant ferroquine derivatives with better or equal therapeutic effects to that of chloroquine and ferroquine. A brief discussion of the toxicities of ferroquine derivatives has been made. Finally, efforts have been made to discuss the current challenges and future perspectives of ferroquine-based antimalarial drug development. Structural, chemical and biological features of ferroquine have been discussed. Several classes of ferroquine derivatives have been reviewed. Mechanism of action of ferroquine has been described. Challenges in ferroquine-based antimalarial drug development have been highlighted. Perspectives in ferroquine-based antimalarial drug development have been outlined.
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Affiliation(s)
- Waseem A Wani
- Institute of Bioproduct Development, Universiti Teknologi Malaysia, 81310, UTM, Skudai, Johor Bahru, Malaysia.
| | - Ehtesham Jameel
- University Department of Chemistry, B. R. Ambedkar Bihar University, Muzaffarpur, 842001, Bihar, India
| | - Umair Baig
- Center of Excellence for Scientific Research Collaboration with MIT, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - Syed Mumtazuddin
- University Department of Chemistry, B. R. Ambedkar Bihar University, Muzaffarpur, 842001, Bihar, India
| | - Lee Ting Hun
- Institute of Bioproduct Development, Universiti Teknologi Malaysia, 81310, UTM, Skudai, Johor Bahru, Malaysia.
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43
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Geyer M, Karlsson O, Baus JA, Wellner E, Tacke R. Si- and C-Functional Organosilicon Building Blocks for Synthesis Based on 4-Silacyclohexan-1-ones Containing the Silicon Protecting Groups MOP (4-Methoxyphenyl), DMOP (2,6-Dimethoxyphenyl), or TMOP (2,4,6-Trimethoxyphenyl). J Org Chem 2015; 80:5804-11. [PMID: 25928726 DOI: 10.1021/acs.joc.5b00774] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
4-Silacyclohexan-1-ones 1a-1c, 4-silacyclohexan-1-one oximes 2a-2c, 1,4-azasilepan-7-ones 3a-3c, 1,4-azasilepanes 4a-4c, and 2-bromo-4-silacyclohexan-1-ones 5a and 5b were prepared in multistep syntheses, starting from trimethoxypropylsilane. All of these compounds represent C-functional (R2C═O, R2C═N-OH, R-NH(C═O)-R, R2NH, or R3C-Br) silicon-containing heterocycles that contain Si-MOP, Si-DMOP, or Si-TMOP moieties (MOP = 4-methoxyphenyl; DMOP = 2,6-dimethoxyphenyl; TMOP = 2,4,6-trimethoxyphenyl), which can be cleaved under mild conditions by protodesilylation. As a proof of principle, compounds 3a-3c were transformed quantitatively and selectively into the chlorosilane 6 (treatment with hydrogen chloride in dichloromethane). Thus, the C- and Si-functional compounds 1a-1c, 2a-2c, 3a-3c, 4a-4c, 5a, and 5b represent versatile building blocks for synthesis.
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Affiliation(s)
- Marcel Geyer
- †Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | | | - Johannes A Baus
- †Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | | | - Reinhold Tacke
- †Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
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Kirpichenko SV, Shainyan BA. An efficient one-pot protocol for the synthesis of phenyl substituted 3-silatetrahydropyrans. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.12.037] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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45
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Luger P, Dittrich B, Tacke R. Invariom based electron density studies on the C/Si analogues haloperidol/sila-haloperidol and venlafaxine/sila-venlafaxine. Org Biomol Chem 2015. [DOI: 10.1039/c5ob00728c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Hirshfeld surfaces of haloperidol hydropicrate (left) and sila-haloperidol hydrochloride (right) show comparable sites of ED concentrations due to comparable intermolecular environments.
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Affiliation(s)
- Peter Luger
- Institut für Chemie und Biochemie – Anorganische Chemie
- Freie Universität Berlin
- D-14195 Berlin
- Germany
| | - Birger Dittrich
- Institut für Angewandte und Anorganische Chemie
- Universität Hamburg
- D-20146 Hamburg
- Germany
| | - Reinhold Tacke
- Institut für Anorganische Chemie
- Universität Würzburg
- D-97074 Würzburg
- Germany
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46
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Li Y, de Kock C, Smith PJ, Chibale K, Smith GS. Synthesis and Evaluation of a Carbosilane Congener of Ferroquine and Its Corresponding Half-Sandwich Ruthenium and Rhodium Complexes for Antiplasmodial and β-Hematin Inhibition Activity. Organometallics 2014. [DOI: 10.1021/om500622p] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Yiqun Li
- Department
of Chemistry, University of Cape Town, Rondebosch 7701, South Africa
| | - Carmen de Kock
- Division
of Pharmacology, Department of Medicine, University of Cape Town, K45, OMB, Groote
Schuur Hospital, Observatory 7925, South Africa
| | - Peter J. Smith
- Division
of Pharmacology, Department of Medicine, University of Cape Town, K45, OMB, Groote
Schuur Hospital, Observatory 7925, South Africa
| | - Kelly Chibale
- Department
of Chemistry, University of Cape Town, Rondebosch 7701, South Africa
- Institute
of Infectious Disease and Molecular Medicine, University of Cape Town, Rondebosch 7701, South Africa
- South
African Medical Research Council Drug Discovery and Development Research
Unit, University of Cape Town, Rondebosch 7701, South Africa
| | - Gregory S. Smith
- Department
of Chemistry, University of Cape Town, Rondebosch 7701, South Africa
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47
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Boddaert T, François C, Mistico L, Querolle O, Meerpoel L, Angibaud P, Durandetti M, Maddaluno J. Anionic Access to Silylated and Germylated Binuclear Heterocycles. Chemistry 2014; 20:10131-9. [DOI: 10.1002/chem.201402597] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Indexed: 12/16/2022]
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48
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Sieburth SM. Bioactive Amino Acids, Peptides and Peptidomimetics Containing Silicon. ADVANCES IN SILICON SCIENCE 2014. [DOI: 10.1007/978-94-017-9439-8_8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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49
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Fischer M, Tacke R. Synthesis of 4-Silapiperidine Building Blocks with N–H Groups Using the Staudinger Reaction. Organometallics 2013. [DOI: 10.1021/om400873w] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Markus Fischer
- Institut
für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Reinhold Tacke
- Institut
für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
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50
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Shainyan BA, Kleinpeter E. Silacyclohexanes and silaheterocyclohexanes—why are they so different from other heterocyclohexanes? Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.04.126] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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