1
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Willcox DR, Cocco E, Nichol GS, Carlone A, Thomas SP. Catalytic Access to Diastereometrically Pure Four- and Five-Membered Silyl-Heterocycles Using Transborylation. Angew Chem Int Ed Engl 2024; 63:e202401737. [PMID: 38578174 DOI: 10.1002/anie.202401737] [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: 01/24/2024] [Revised: 03/19/2024] [Accepted: 04/03/2024] [Indexed: 04/06/2024]
Abstract
Silyl-heterocycles offer a unique handle to expand and explore chemical space, reactivity, and functionality. The shortage of catalytic methods for the preparation of diverse and functionalized silyl-heterocycles however limits widespread exploration and exploitation. Herein the borane-catalyzed intramolecular 1,1-carboboration of silyl-alkynes has been developed for the synthesis of 2,3-dihydrosilolyl and silylcyclobut-2-enyl boronic esters. Successful, catalytic carboboration has been achieved on a variety of functionally diverse silyl-alkynes, using a borane catalyst and transborylation-enabled turnover. Mechanistic studies, including 13C-labelling, computational studies, and single-turnover experiments, suggest a reaction pathway proceeding by 1,2-hydroboration, 1,1-carboboration, and transborylation to release the alkenyl boronic ester product and regenerate the borane catalyst.
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Affiliation(s)
- Dominic R Willcox
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, EH9 3FJ, Edinburgh, United Kingdom
| | - Emanuele Cocco
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, EH9 3FJ, Edinburgh, United Kingdom
- Department of Physical and Chemical Sciences, Università degli Studi dell'Aquila, via Vetoio, 67100, L'Aquila, Italy
| | - Gary S Nichol
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, EH9 3FJ, Edinburgh, United Kingdom
| | - Armando Carlone
- Department of Physical and Chemical Sciences, Università degli Studi dell'Aquila, via Vetoio, 67100, L'Aquila, Italy
| | - Stephen P Thomas
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, EH9 3FJ, Edinburgh, United Kingdom
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2
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Xu X, Gao A, Xu X, Li J, Cui C. Selective Access to Silacyclopentanes and Homoallylsilanes by La-Catalyzed Hydrosilylations of 1-Aryl Methylenecyclopropanes. J Am Chem Soc 2024; 146:4060-4067. [PMID: 38300299 DOI: 10.1021/jacs.3c12355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
Methylenecyclopropanes (MCPs) have emerged as versatile building blocks in synthetic chemistry because of their unique reactivity. However, metal-catalyzed hydrosilylation of MCPs has met with very limited successes. In this paper, catalytic selective hydrosilylations of MCPs with some primary silanes using an ene-diamido lanthanum ate complex as the catalyst were described. The catalytic reactions resulted in the selective formation of silacyclopentanes and (E)-homoallylsilanes, respectively, depending on the substituents on MCPs. The formation of silacyclopentanes via a catalytic cascade inter- and intramolecular hydrosilylation mechanism is strongly supported by the control and deuteration-labeling experiments and DFT calculations. The unique reactivity and selectivity could be attributed to the large lanthanum ion and ate structure of the catalyst.
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Affiliation(s)
- Xiaoming Xu
- State Key Laboratory of Elemento-Organic Chemistry, Frontiers Science Center of Organic Matters and College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Ailin Gao
- State Key Laboratory of Elemento-Organic Chemistry, Frontiers Science Center of Organic Matters and College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Xiufang Xu
- State Key Laboratory of Elemento-Organic Chemistry, Frontiers Science Center of Organic Matters and College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Jianfeng Li
- State Key Laboratory of Elemento-Organic Chemistry, Frontiers Science Center of Organic Matters and College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Chunming Cui
- State Key Laboratory of Elemento-Organic Chemistry, Frontiers Science Center of Organic Matters and College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
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3
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Hayashi D, Tsuda T, Shintani R. Palladium-Catalyzed Skeletal Rearrangement of Substituted 2-Silylaryl Triflates via 1,5-C-Pd/C-Si Bond Exchange. Angew Chem Int Ed Engl 2023; 62:e202313171. [PMID: 37935641 DOI: 10.1002/anie.202313171] [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: 09/05/2023] [Revised: 11/05/2023] [Accepted: 11/07/2023] [Indexed: 11/09/2023]
Abstract
A palladium-catalyzed skeletal rearrangement of 2-(2-allylarylsilyl)aryl triflates has been developed to give highly fused tetrahydrophenanthrosilole derivatives via unprecedented 1,5-C-Pd/C-Si bond exchange. The reaction pathways can be switched toward 4-membered ring-forming C(sp2 )-H alkylation by tuning the reaction conditions to give completely different products, fused dihydrodibenzosilepin derivatives, from the same starting materials. The inspection of the reaction conditions revealed the importance of carboxylates in promoting the C-Pd/C-Si bond exchange.
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Affiliation(s)
- Daigo Hayashi
- Division of Chemistry, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Tomohiro Tsuda
- Division of Chemistry, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Ryo Shintani
- Division of Chemistry, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka 565-0871, Japan
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4
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Li W, Yu Y, Zhang X, Zhang C, Chen M, Li T. NBE-Controlled Palladium-Catalyzed Intermolecular Selective C-H Silylation of Boronic Acids. J Org Chem 2023; 88:14659-14669. [PMID: 37787482 DOI: 10.1021/acs.joc.3c01655] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
An efficient palladium-catalyzed intermolecular selective C-H silylation of boronic acids is described. The combination of palladium catalyst with copper oxidant enables ortho-selective C-H silylation by employing hexamethyldisilane as the trimethylsilyl source, which relies on the control of NBE derivatives as a switch, thus providing straightforward access to divergent organosilicon compounds.
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Affiliation(s)
- Wenguang Li
- Drug Synthesis Engineering Technology Research Center of Henan Province for Photoelectric Green Catalysis, Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, China
- State Key Laboratory of Motor Vehicle Biofuel Technology, Henan Tianguan Enterprise Group Company Limited, Nanyang, Henan 473000, China
| | - Yongqi Yu
- Drug Synthesis Engineering Technology Research Center of Henan Province for Photoelectric Green Catalysis, Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, China
| | - Xu Zhang
- Drug Synthesis Engineering Technology Research Center of Henan Province for Photoelectric Green Catalysis, Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, China
| | - Chunyan Zhang
- Drug Synthesis Engineering Technology Research Center of Henan Province for Photoelectric Green Catalysis, Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, China
| | - Ming Chen
- Drug Synthesis Engineering Technology Research Center of Henan Province for Photoelectric Green Catalysis, Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, China
| | - Ting Li
- Drug Synthesis Engineering Technology Research Center of Henan Province for Photoelectric Green Catalysis, Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, China
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5
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Tiede ER, Heckman MT, Brennessel WW, Kraft BM. Chelation Equilibria and π-Electron Delocalization in Neutral Hypercoordinate Organosilicon Complexes of Pyrithione. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Erin R. Tiede
- Department of Chemistry, St. John Fisher University, Rochester, New York 14618, United States
| | - Matthew T. Heckman
- Department of Chemistry, St. John Fisher University, Rochester, New York 14618, United States
| | - William W. Brennessel
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Bradley M. Kraft
- Department of Chemistry, St. John Fisher University, Rochester, New York 14618, United States
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6
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Lu Y, Xiao Y, Liu LF, Xiao XL, Liao LF, Nie CM. Theoretical probing into complexation of Si-5LIO-1-Cm-3,2-HOPO with Uranyl. Theor Chem Acc 2022. [DOI: 10.1007/s00214-022-02916-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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7
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Moon NT, Marshall FE, McFadden TM, Ocola EJ, Laane J, Guirgis GA, Grubbs GS. Pure rotational spectrum and structural determination of 1,1-difluoro-1-silacyclopentane. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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8
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Xue Y, Guo Z, Chen X, Li J, Zou D, Wu Y, Wu Y. Copper-promoted difunctionalization of unactivated alkenes with silanes. Org Biomol Chem 2022; 20:989-994. [PMID: 35018960 DOI: 10.1039/d1ob02318g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
An efficient copper-catalyzed cascade difunctionalization of N-allyl anilines toward the synthesis of silylated indolines using commercially available silanes has been reported. This strategy provides a new avenue for the synthesis of a diverse array of indolines in reasonable yields. Preliminary mechanistic investigations indicate that the reaction probably proceeds via a radical pathway with unactivated alkenes as radical acceptors and simple silanes as radical precursors. This protocol is distinguished by its atom economy, broad substrate scope and readily available starting materials.
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Affiliation(s)
- Yingying Xue
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou 450052, People's Republic of China.
| | - Zhuangzhuang Guo
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou 450052, People's Republic of China.
| | - Xiaoyu Chen
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou 450052, People's Republic of China.
| | - Jingya Li
- TetranovBiopharm, LLC., Zhengzhou, 450052, People's Republic of China
| | - Dapeng Zou
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou 450052, People's Republic of China.
| | - Yangjie Wu
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou 450052, People's Republic of China.
| | - Yusheng Wu
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou 450052, People's Republic of China. .,Tetranov International, Inc., 100 Jersey Avenue, Suite A340, New Brunswick, NJ 08901, USA.
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9
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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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10
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Biswas S, Pal S, Uyeda C. Nickel-catalyzed insertions of vinylidenes into Si-H bonds. Chem Commun (Camb) 2020; 56:14175-14178. [PMID: 33141128 DOI: 10.1039/d0cc05970f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A nickel-catalyzed reductive cyclization of 1,1-dichloroalkenyl silanes is reported. The products of this reaction are unsaturated five- or six-membered silacycles. Intermolecular variants are also described, providing access to trisubstituted vinyl silanes that are not accessible by alkyne hydrosilylation or sila-Heck-type processes. A variety of silanes can be utilized, including those that serve as nucleophilic partners in Hiyama cross-coupling reactions. Mechanistic studies using deuterium-labelled silanes are described.
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Affiliation(s)
- Sourish Biswas
- Department of Chemistry, Purdue University, 560 Oval Dr., West Lafayette, IN, USA.
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11
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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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12
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Ohmura T, Sasaki I, Suginome M. Catalytic Generation of Rhodium Silylenoid for Alkene-Alkyne-Silylene [2 + 2 + 1] Cycloaddition. Org Lett 2019; 21:1649-1653. [PMID: 30835127 DOI: 10.1021/acs.orglett.9b00326] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
An alkene-alkyne-silylene [2 + 2 + 1] cycloaddition takes place in the rhodium-catalyzed reaction of 1,6-enynes with borylsilanes bearing an alkoxy group on the silicon atoms, which react as synthetic equivalents of silylene. The reaction proceeds efficiently in 1,2-dichloroethane at 80-110 °C in the presence of a rhodium catalyst bearing bis(diphenylphosphino)methane (DPPM) as a ligand to afford 1-silacyclopent-2-enes in good to high yields.
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Affiliation(s)
- Toshimichi Ohmura
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering , Kyoto University , Katsura, Nishikyo-ku , Kyoto 615-8510 , Japan
| | - Ikuo Sasaki
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering , Kyoto University , Katsura, Nishikyo-ku , Kyoto 615-8510 , Japan
| | - Michinori Suginome
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering , Kyoto University , Katsura, Nishikyo-ku , Kyoto 615-8510 , Japan
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13
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Vale JR, Valkonen A, Afonso CAM, Candeias NR. Synthesis of silacyclopent-2-en-4-ols via intramolecular [2 + 2] photocycloaddition of benzoyl(allyl)silanes. Org Chem Front 2019. [DOI: 10.1039/c9qo01028a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Organosilicon compounds are versatile units with a wide range of uses from medicinal chemistry to the field of organic electronics.
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Affiliation(s)
- João R. Vale
- Faculty of Engineering and Natural sciences
- Tampere University
- 33101 Tampere
- Finland
- Instituto de Investigação do Medicamento (iMed.ULisboa)
| | - Arto Valkonen
- Department of Chemistry
- University of Jyvaskyla
- 40014 Jyväskylä
- Finland
| | - Carlos A. M. Afonso
- Instituto de Investigação do Medicamento (iMed.ULisboa)
- Faculty of Pharmacy
- Universidade de Lisboa
- 1649-003 Lisboa
- Portugal
| | - Nuno R. Candeias
- Faculty of Engineering and Natural sciences
- Tampere University
- 33101 Tampere
- Finland
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14
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Diemoz KM, Franz AK. NMR Quantification of Hydrogen-Bond-Activating Effects for Organocatalysts including Boronic Acids. J Org Chem 2018; 84:1126-1138. [PMID: 30516381 DOI: 10.1021/acs.joc.8b02389] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The hydrogen-bonding activation for 66 organocatalysts has been quantified using a 31P NMR binding experiment with triethylphosphine oxide (TEPO). Diverse structural classes, including phenols, diols, silanols, carboxylic acids, boronic acids, and phosphoric acids, were examined with a variety of steric and electronic modifications to understand how the structure and secondary effects contribute to hydrogen-bonding ability and catalysis. Hammett plots demonstrate high correlation for the Δδ 31P NMR shift to Hammett parameters, establishing the ability of TEPO binding to predict electronic trends. Upon correlation to catalytic activity in a Friedel-Crafts addition reaction, data demonstrate that 31P NMR shifts correlate to catalytic activity better than p Ka values. Boronic acids were investigated, and 31P NMR binding experiments predicted strong hydrogen-bonding ability, for which catalytic activity was confirmed, resulting in the greatest rate enhancement observed in the Friedel-Crafts addition of all organocatalysts studied. A detailed investigation supports that boronic acid activation proceeds through hydrogen-bonding interactions and not coordination with the Lewis acidic boron center. Using 31P NMR spectroscopy offers a simple and rapid tool to quantify and predict hydrogen-bonding abilities for the design and applications of new organocatalysts and supramolecular synthons.
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Affiliation(s)
- Kayla M Diemoz
- Department of Chemistry , University of California , One Shields Avenue , Davis , California 95616 , United States
| | - Annaliese K Franz
- Department of Chemistry , University of California , One Shields Avenue , Davis , California 95616 , United States
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15
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Tian F, He FS, Deng H, Yang WL, Deng WP. β-Silyl Acrylates in Asymmetric [3 + 2] Cycloadditions Affording Pyrrolidine Azasugar Derivatives. Org Lett 2018; 20:3838-3842. [DOI: 10.1021/acs.orglett.8b01430] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Fei Tian
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Fu-Sheng He
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Hua Deng
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Wu-Lin Yang
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Wei-Ping Deng
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
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16
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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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17
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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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18
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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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19
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Yang Y, Song RJ, Ouyang XH, Wang CY, Li JH, Luo S. Iron-Catalyzed Intermolecular 1,2-Difunctionalization of Styrenes and Conjugated Alkenes with Silanes and Nucleophiles. Angew Chem Int Ed Engl 2017; 56:7916-7919. [DOI: 10.1002/anie.201702349] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Revised: 04/17/2017] [Indexed: 12/16/2022]
Affiliation(s)
- Yuan Yang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle; Nanchang Hangkong University; Nanchang 330063 China
- State Key Laboratory of Chemo/Biosensing and Chemometrics; Hunan University; Changsha 410082 China
| | - Ren-Jie Song
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle; Nanchang Hangkong University; Nanchang 330063 China
- State Key Laboratory of Chemo/Biosensing and Chemometrics; Hunan University; Changsha 410082 China
| | - Xuan-Hui Ouyang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle; Nanchang Hangkong University; Nanchang 330063 China
- State Key Laboratory of Chemo/Biosensing and Chemometrics; Hunan University; Changsha 410082 China
| | - Cheng-Yong Wang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle; Nanchang Hangkong University; Nanchang 330063 China
- State Key Laboratory of Chemo/Biosensing and Chemometrics; Hunan University; Changsha 410082 China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle; Nanchang Hangkong University; Nanchang 330063 China
- State Key Laboratory of Chemo/Biosensing and Chemometrics; Hunan University; Changsha 410082 China
| | - Shenglian Luo
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle; Nanchang Hangkong University; Nanchang 330063 China
- State Key Laboratory of Chemo/Biosensing and Chemometrics; Hunan University; Changsha 410082 China
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20
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Yang Y, Song RJ, Ouyang XH, Wang CY, Li JH, Luo S. Iron-Catalyzed Intermolecular 1,2-Difunctionalization of Styrenes and Conjugated Alkenes with Silanes and Nucleophiles. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702349] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Yuan Yang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle; Nanchang Hangkong University; Nanchang 330063 China
- State Key Laboratory of Chemo/Biosensing and Chemometrics; Hunan University; Changsha 410082 China
| | - Ren-Jie Song
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle; Nanchang Hangkong University; Nanchang 330063 China
- State Key Laboratory of Chemo/Biosensing and Chemometrics; Hunan University; Changsha 410082 China
| | - Xuan-Hui Ouyang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle; Nanchang Hangkong University; Nanchang 330063 China
- State Key Laboratory of Chemo/Biosensing and Chemometrics; Hunan University; Changsha 410082 China
| | - Cheng-Yong Wang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle; Nanchang Hangkong University; Nanchang 330063 China
- State Key Laboratory of Chemo/Biosensing and Chemometrics; Hunan University; Changsha 410082 China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle; Nanchang Hangkong University; Nanchang 330063 China
- State Key Laboratory of Chemo/Biosensing and Chemometrics; Hunan University; Changsha 410082 China
| | - Shenglian Luo
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle; Nanchang Hangkong University; Nanchang 330063 China
- State Key Laboratory of Chemo/Biosensing and Chemometrics; Hunan University; Changsha 410082 China
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21
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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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22
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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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23
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Yoshioka S, Fujii Y, Tsujino H, Uno T, Fujioka H, Arisawa M. One-pot enyne metathesis/Diels–Alder/oxidation to six-membered silacycles with a multi-ring core: discovery of novel fluorophores. Chem Commun (Camb) 2017; 53:5970-5973. [DOI: 10.1039/c7cc02788e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
One-pot enyne metathesis/Diels–Alder/oxidation methodology was developed to give fluorescent six-membered silacycle with multi-ring core.
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Affiliation(s)
- Shohei Yoshioka
- Graduate School of Pharmaceutical Sciences
- Osaka University
- Suita
- Japan
| | - Yuki Fujii
- Graduate School of Pharmaceutical Sciences
- Osaka University
- Suita
- Japan
| | - Hirofumi Tsujino
- Graduate School of Pharmaceutical Sciences
- Osaka University
- Suita
- Japan
| | - Tadayuki Uno
- Graduate School of Pharmaceutical Sciences
- Osaka University
- Suita
- Japan
| | - Hiromichi Fujioka
- Graduate School of Pharmaceutical Sciences
- Osaka University
- Suita
- Japan
| | - Mitsuhiro Arisawa
- Graduate School of Pharmaceutical Sciences
- Osaka University
- Suita
- Japan
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24
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Nakagawa Y, Chanthamath S, Fujisawa I, Shibatomi K, Iwasa S. Ru(ii)-Pheox-catalyzed Si–H insertion reaction: construction of enantioenriched carbon and silicon centers. Chem Commun (Camb) 2017; 53:3753-3756. [PMID: 28304026 DOI: 10.1039/c7cc01070b] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We established a highly enantioselective Si–H insertion reaction to construct chiral centers at the carbon and silicon atoms, using a Ru(ii)–Pheox catalyst.
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Affiliation(s)
- Yoko Nakagawa
- Department of Environmental and Life Sciences
- Toyohashi University of Technology
- Toyohashi
- Japan
| | - Soda Chanthamath
- Department of Environmental and Life Sciences
- Toyohashi University of Technology
- Toyohashi
- Japan
| | - Ikuhide Fujisawa
- Department of Environmental and Life Sciences
- Toyohashi University of Technology
- Toyohashi
- Japan
| | - Kazutaka Shibatomi
- Department of Environmental and Life Sciences
- Toyohashi University of Technology
- Toyohashi
- Japan
| | - Seiji Iwasa
- Department of Environmental and Life Sciences
- Toyohashi University of Technology
- Toyohashi
- Japan
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25
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Bruña S, Garrido-Castro AF, Perles J, Montero-Campillo MM, Mó O, Kaifer AE, Cuadrado I. Multi-Ferrocene-Containing Silanols as Redox-Active Anion Receptors. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00559] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
| | | | | | | | | | - Angel E. Kaifer
- Center
for Supramolecular Science and Department of Chemistry, University of Miami, Coral Gables, Florida 33124-0431, United States
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26
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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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27
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28
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Hydrogen bonding principles in inclusion compounds of triphenylsilanol and pyrrolidine: Synthesis and structural features of [(Ph3SiOH)4·HN(CH2)4] and [Ph3SiOH·HN(CH2)4·CH3CO2H]. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.07.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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29
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Ortega R, Sanchez-Quesada J, Lorenz C, Dolega G, Karawajczyk A, Sanz M, Showell G, Giordanetto F. Design and synthesis of 1,1-disubstituted-1-silacycloalkane-based compound libraries. Bioorg Med Chem 2015; 23:2716-20. [DOI: 10.1016/j.bmc.2015.01.046] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Revised: 12/19/2014] [Accepted: 01/26/2015] [Indexed: 10/24/2022]
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30
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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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31
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Boethling R, Meylan W. How accurate are physical property estimation programs for organosilicon compounds? ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2013; 32:2433-2440. [PMID: 23846858 DOI: 10.1002/etc.2326] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Revised: 05/24/2013] [Accepted: 07/03/2013] [Indexed: 06/02/2023]
Abstract
Organosilicon compounds are important in chemistry and commerce, and nearly 10% of new chemical substances for which premanufacture notifications are processed by the US Environmental Protection Agency (USEPA) contain silicon (Si). Yet, remarkably few measured values are submitted for key physical properties, and the accuracy of estimation programs such as the Estimation Programs Interface (EPI) Suite and the SPARC Performs Automated Reasoning in Chemistry (SPARC) system is largely unknown. To address this issue, the authors developed an extensive database of measured property values for organic compounds containing Si and evaluated the performance of no-cost estimation programs for several properties of importance in environmental assessment. These included melting point (mp), boiling point (bp), vapor pressure (vp), water solubility, n-octanol/water partition coefficient (log KOW ), and Henry's law constant. For bp and the larger of 2 vp datasets, SPARC, MPBPWIN, and the USEPA's Toxicity Estimation Software Tool (TEST) had similar accuracy. For log KOW and water solubility, the authors tested 11 and 6 no-cost estimators, respectively. The best performers were Molinspiration and WSKOWWIN, respectively. The TEST's consensus mp method outperformed that of MPBPWIN by a considerable margin. Generally, the best programs estimated the listed properties of diverse organosilicon compounds with accuracy sufficient for chemical screening. The results also highlight areas where improvement is most needed.
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Affiliation(s)
- Robert Boethling
- Office of Pollution Prevention and Toxics, US Environmental Protection Agency, Washington, DC, USA
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32
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Guda DR, Park SJ, Lee MW, Kim TJ, Lee ME. Syntheses and anti-allergic activity of 2-((bis(trimethylsilyl)methylthio/methylsulfonyl)methyl)-5-aryl-1,3,4-oxadiazoles. Eur J Med Chem 2012; 62:84-8. [PMID: 23353735 DOI: 10.1016/j.ejmech.2012.12.035] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Revised: 12/14/2012] [Accepted: 12/15/2012] [Indexed: 10/27/2022]
Abstract
A new class of sila-substituted 1,3,4-oxadiazoles was synthesized by a convenient synthetic method. Both silathio/silasulfonyl acetic acids were efficiently condensed with benzohydrazides in the presence of phosphorus oxychloride to give sila-substituted 1,3,4-oxadiazoles in high yields. The compounds displayed variable extent of anti-allergic activity on IgE/Ag-stimulated RBL-2H3 cells at 50 and 100 μM concentrations. Compounds having sulfonyl moiety with bis(trimethylsilyl)-1,3,4-oxadiazoles (5a-c), exhibited better anti-allergic activities than those of compounds having sulphur moiety with bis(trimethylsilyl)-1,3,4-oxadiazoles (4a-c).
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Affiliation(s)
- Dinneswara Reddy Guda
- Department of Chemistry & Medical Chemistry, College of Science and Technology, Research & Education Center for Advanced Silicon Materials, Yonsei University, Wonju, Gangwon-Do 220-710, South Korea
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33
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Affiliation(s)
- Annaliese K. Franz
- Department of Chemistry, University of California—Davis, One Shields Avenue, Davis,
California, United States
| | - Sean O. Wilson
- Department of Chemistry, University of California—Davis, One Shields Avenue, Davis,
California, United States
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34
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Gluyas JBG, Burschka C, Dörrich S, Vallet J, Gronemeyer H, Tacke R. Disila-analogues of the synthetic retinoids EC23 and TTNN: synthesis, structure and biological evaluation. Org Biomol Chem 2012; 10:6914-29. [PMID: 22814352 DOI: 10.1039/c2ob25989c] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Silicon chemistry offers the potential to tune the effects of biologically active organic molecules. Subtle changes in the molecular backbone caused by the exchange of a carbon atom for a silicon atom (sila-substitution) can significantly alter the biological properties. In this study, the biological effects of a two-fold sila-substitution in the synthetic retinoids EC23 (4-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydronaphthalen-2-ylethynyl)benzoic acid (4a)) and TTNN (6-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydronaphthalen-2-yl)-2-naphthoic acid (7a)) as well as their corresponding analogues with an indane instead of a 1,2,3,4-tetrahydronaphthalene skeleton (compounds 5a and 8a) were investigated. Two-fold C/Si exchange in 4a, 5a, 7a and 8a leads to the silicon-analogues disila-EC23 (4b), 5b, disila-TTNN (7b) and 8b, which contain a 1,2,3,4-tetrahydro-1,4-disilanaphthalene (4b, 7b) or 1,3-disilaindane skeleton (5b, 8b). Exchange of the SiCH(2)Si moiety of 5b for an SiOSi fragment leads to the disiloxane 6 (2-oxa-1,3-disilaindane skeleton). The EC23 derivative 5a, the TTNN derivative 8a and the silicon-containing analogues 4b, 5b, 6, 7b and 8b were synthesised, and the biological properties of the C/Si pairs 4a/4b, 5a/5b, 7a/7b and 8a/8b and compound 6 were evaluated in vivo using RAR isotype-selective reporter cells. EC23 (4a) and its derivatives disila-EC23 (4b), 5a, 5b and 6 are very potent RAR agonists, which are even more potent than the powerful reference compound TTNPB. Disila-substitution of EC23 (4a) and 5a leads to a moderate decrease in RARα activation, whereas the RARβ,γ activation is almost not affected. In contrast, two-fold C/Si exchange in the weak retinoid agonist TTNN (7a) and 8a resulted in considerably different effects: a significant increase (7a→7b) and almost no change (8a→8b) in transcription activation potential for all three RAR isotypes. Disila-TTNN (7b) can be regarded as a powerful RARβ,γ-selective retinoid.
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Affiliation(s)
- Josef B G Gluyas
- Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, D-97074 Würzburg, Germany
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35
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Min T, Fettinger JC, Franz AK. Enantiocontrol with a Hydrogen-bond Directing Pyrrolidinylsilanol Catalyst. ACS Catal 2012. [DOI: 10.1021/cs300290j] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Taewoo Min
- Department
of Chemistry, University of California, One Shields Avenue, Davis, California 95616,
United States
| | - James C. Fettinger
- Department
of Chemistry, University of California, One Shields Avenue, Davis, California 95616,
United States
| | - Annaliese K. Franz
- Department
of Chemistry, University of California, One Shields Avenue, Davis, California 95616,
United States
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36
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Tran NT, Wilson SO, Franz AK. Cooperative Hydrogen-Bonding Effects in Silanediol Catalysis. Org Lett 2011; 14:186-9. [DOI: 10.1021/ol202971m] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Ngon T. Tran
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Sean O. Wilson
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Annaliese K. Franz
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
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37
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Tacke R, Bertermann R, Burschka C, Dörrich S, Fischer M, Müller B, Meyerhans G, Schepmann D, Wünsch B, Arnason I, Bjornsson R. High-Affinity, Selective σ Ligands of the 1,2,3,4-Tetrahydro-1,4′-silaspiro[naphthalene-1,4′-piperidine] Type: Syntheses, Structures, and Pharmacological Properties. ChemMedChem 2011; 7:523-32. [DOI: 10.1002/cmdc.201100423] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Indexed: 11/06/2022]
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38
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Barnes MJ, Burschka C, Büttner MW, Conroy R, Daiss JO, Gray IC, Hendrick AG, Tam LH, Kuehn D, Miller DJ, Mills JS, Mitchell P, Montana JG, Muniandy PA, Rapley H, Showell GA, Tebbe D, Tacke R, Warneck JBH, Zhu B. Silicon Analogues of the Nonpeptidic GnRH Antagonist AG-045572: Syntheses, Crystal Structure Analyses, and Pharmacological Characterization. ChemMedChem 2011; 6:2070-80. [DOI: 10.1002/cmdc.201100318] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Indexed: 11/09/2022]
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39
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Liu M, Tran NT, Franz AK, Lee JK. Gas-Phase Acidity Studies of Dual Hydrogen-Bonding Organic Silanols and Organocatalysts. J Org Chem 2011; 76:7186-94. [DOI: 10.1021/jo201214x] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Min Liu
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08901, United States
| | - Ngon T. Tran
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Annaliese K. Franz
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Jeehiun K. Lee
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08901, United States
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40
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Tran NT, Min T, Franz AK. Silanediol Hydrogen Bonding Activation of Carbonyl Compounds. Chemistry 2011; 17:9897-900. [DOI: 10.1002/chem.201101492] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Indexed: 11/10/2022]
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41
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Bauer JB, Lippert WP, Dörrich S, Tebbe D, Burschka C, Christie VB, Tams DM, Henderson AP, Murray BA, Marder TB, Przyborski SA, Tacke R. Novel Silicon-Containing Analogues of the Retinoid Agonist Bexarotene: Syntheses and Biological Effects on Human Pluripotent Stem Cells. ChemMedChem 2011; 6:1509-17. [DOI: 10.1002/cmdc.201100156] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Revised: 05/12/2011] [Indexed: 11/09/2022]
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42
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Meanwell NA. Synopsis of Some Recent Tactical Application of Bioisosteres in Drug Design. J Med Chem 2011; 54:2529-91. [DOI: 10.1021/jm1013693] [Citation(s) in RCA: 1876] [Impact Index Per Article: 144.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Nicholas A. Meanwell
- Department of Medicinal Chemistry, Bristol-Myers Squibb Pharmaceutical Research and Development, 5 Research Parkway, Wallingford, Connecticut 06492, United States
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Kochetkov KA, Galkina MA, Galkin OM. Enzymatic resolution of (±)-venlafaxine. MENDELEEV COMMUNICATIONS 2010. [DOI: 10.1016/j.mencom.2010.11.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Mizojiri R, Conroy R, Daiss J, Kotani E, Tacke R, Miller D, Walsh L, Kawamoto T. Large-scale synthesis of 1,1,3,3,6-pentamethyl-1,3-disilaindan-5-ol via a CoBr2/Zn-catalyzed [2+2+2] cycloaddition reaction. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.07.068] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Evangelisti C, Klapötke TM, Krumm B, Nieder A, Berger RJF, Hayes SA, Mitzel NW, Troegel D, Tacke R. Sila-Substitution of Alkyl Nitrates: Synthesis, Structural Characterization, and Sensitivity Studies of Highly Explosive (Nitratomethyl)-, Bis(nitratomethyl)-, and Tris(nitratomethyl)silanes and Their Corresponding Carbon Analogues. Inorg Chem 2010; 49:4865-80. [DOI: 10.1021/ic902387y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Camilla Evangelisti
- Department of Chemistry, Ludwig Maximilians University of München, Butenandtstrasse 5−13 (D), D-81377 München, Germany
| | - Thomas M. Klapötke
- Department of Chemistry, Ludwig Maximilians University of München, Butenandtstrasse 5−13 (D), D-81377 München, Germany
| | - Burkhard Krumm
- Department of Chemistry, Ludwig Maximilians University of München, Butenandtstrasse 5−13 (D), D-81377 München, Germany
| | - Anian Nieder
- Department of Chemistry, Ludwig Maximilians University of München, Butenandtstrasse 5−13 (D), D-81377 München, Germany
| | - Raphael J. F. Berger
- Faculty of Chemistry, University of Bielefeld, Universitätsstrasse 25, D-33615 Bielefeld, Germany
| | - Stuart A. Hayes
- Faculty of Chemistry, University of Bielefeld, Universitätsstrasse 25, D-33615 Bielefeld, Germany
| | - Norbert W. Mitzel
- Faculty of Chemistry, University of Bielefeld, Universitätsstrasse 25, D-33615 Bielefeld, Germany
| | - Dennis Troegel
- Institute of Inorganic Chemistry, University of Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Reinhold Tacke
- Institute of Inorganic Chemistry, University of Würzburg, Am Hubland, D-97074 Würzburg, Germany
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Johansson T, Weidolf L, Popp F, Tacke R, Jurva U. In vitro metabolism of haloperidol and sila-haloperidol: new metabolic pathways resulting from carbon/silicon exchange. Drug Metab Dispos 2010; 38:73-83. [PMID: 19812350 DOI: 10.1124/dmd.109.028449] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The neurotoxic side effects observed for the neuroleptic agent haloperidol have been associated with its pyridinium metabolite. In a previous study, a silicon analog of haloperidol (sila-haloperidol) was synthesized, which contains a silicon atom instead of the carbon atom in the 4-position of the piperidine ring. In the present study, the phase I metabolism of sila-haloperidol and haloperidol was studied in rat and human liver microsomes. The phase II metabolism was studied in rat, dog, and human hepatocytes and also in liver microsomes supplemented with UDP-glucuronic acid (UDPGA). A major metabolite of haloperidol, the pyridinium metabolite, was not formed in the microsomal incubations with sila-haloperidol. For sila-haloperidol, three metabolites originating from opening of the piperidine ring were observed, a mechanism that has not been observed for haloperidol. One of the significant phase II metabolites of haloperidol was the glucuronide of the hydroxy group bound to the piperidine ring. For sila-haloperidol, the analogous metabolite was not observed in the hepatocytes or in the liver microsomal incubations containing UDPGA. If silanol (SiOH) groups are not glucuronidated, introducing silanol groups in drug molecules could provide an opportunity to enhance the hydrophilicity without allowing for direct phase II metabolism. To provide further support for the observed differences in metabolic pathways between haloperidol and sila-haloperidol, the metabolism of another pair of C/Si analogs was studied, namely, trifluperidol and sila-trifluperidol. These studies showed the same differences in metabolic pathways as between sila-haloperidol and haloperidol.
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Affiliation(s)
- Tove Johansson
- Discovery DMPK, AstraZeneca Research and Development, SE-43183 Mölndal, Sweden.
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Tacke R, Nguyen B, Burschka C, Lippert WP, Hamacher A, Urban C, Kassack MU. Sila-Trifluperidol, a Silicon Analogue of the Dopamine (D2) Receptor Antagonist Trifluperidol: Synthesis and Pharmacological Characterization. Organometallics 2010. [DOI: 10.1021/om901011t] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Reinhold Tacke
- Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Binh Nguyen
- Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Christian Burschka
- Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - W. Peter Lippert
- Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Alexandra Hamacher
- Institut für Pharmazeutische und Medizinische Chemie, Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
| | - Christian Urban
- Institut für Pharmazeutische und Medizinische Chemie, Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
| | - Matthias U. Kassack
- Institut für Pharmazeutische und Medizinische Chemie, Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
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Tacke R, Müller V, Büttner MW, Lippert WP, Bertermann R, Daiss JO, Khanwalkar H, Furst A, Gaudon C, Gronemeyer H. Synthesis and pharmacological characterization of Disila-AM80 (Disila-tamibarotene) and Disila-AM580, silicon analogues of the RARalpha-selective retinoid agonists AM80 (Tamibarotene) and AM580. ChemMedChem 2010; 4:1797-802. [PMID: 19790202 DOI: 10.1002/cmdc.200900257] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Reinhold Tacke
- Universität Würzburg, Institut für Anorganische Chemie, Germany.
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Biologically Active Silacyclanes. ADVANCES IN HETEROCYCLIC CHEMISTRY 2010. [DOI: 10.1016/s0065-2725(10)09904-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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50
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Lippert WP, Burschka C, Götz K, Kaupp M, Ivanova D, Gaudon C, Sato Y, Antony P, Rochel N, Moras D, Gronemeyer H, Tacke R. Silicon Analogues of the RXR-Selective Retinoid Agonist SR11237 (BMS649): Chemistry and Biology. ChemMedChem 2009; 4:1143-52. [DOI: 10.1002/cmdc.200900090] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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