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Discovery of trisubstituted pyrazolines as a novel scaffold for the development of selective phosphodiesterase 5 inhibitors. Bioorg Chem 2020; 104:104322. [PMID: 33142429 DOI: 10.1016/j.bioorg.2020.104322] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 08/25/2020] [Accepted: 09/24/2020] [Indexed: 12/11/2022]
Abstract
Celecoxib, is a selective cyclooxygenase-2 (COX2) inhibitor with a 1,5-diaryl pyrazole scaffold. Celecoxib has a better safety profile compared to other COX2 inhibitors having side effects of systemic hypertension and thromboembolic complications. This may be partly attributed to an off-target activity involving phosphodiesterase 5 (PDE5) inhibition and the potentiation of NO/cGMP signalling allowing coronary vasodilation and aortic relaxation. Inspired by the structure of celecoxib, we synthesized a chemically diverse series of compounds containing a 1,3,5-trisubstituted pyrazoline scaffold to improve PDE5 inhibitory potency, while eliminating COX2 inhibitory activity. SAR studies for PDE5 inhibition revealed an essential role for a carboxylic acid functionality at the 1-phenyl and the importance of the non-planar pyrazoline core over the planar pyrazole with the 5-phenyl moiety tolerating a range of substituents. These modifications led to new PDE5 inhibitors with approximately 20-fold improved potency to inhibit PDE5 and no COX-2 inhibitory activity compared with celecoxib. PDE isozyme profiling of compound 11 revealed a favorable selectivity profile. These results suggest that trisubstituted pyrazolines provide a promising scaffold for further chemical optimization to identify novel PDE5 inhibitors with potential for less side effects compared with available PDE5 inhibitors used for the treatment of penile erectile dysfunction and pulmonary hypertension.
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2
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Ota K, Nagao K, Ohmiya H. N-Heterocyclic Carbene-Catalyzed Radical Relay Enabling Synthesis of δ-Ketocarbonyls. Org Lett 2020; 22:3922-3925. [DOI: 10.1021/acs.orglett.0c01199] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kenji Ota
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Kazunori Nagao
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Hirohisa Ohmiya
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
- JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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3
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Downey CW, Glist HM, Takashima A, Bottum SR, Dixon GJ. Chalcone and cinnamate synthesis via one-pot enol silane formation-Mukaiyama aldol reactions of ketones and acetate esters. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.06.066] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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4
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Della Sala G, Sicignano M, Schettini R, De Riccardis F, Cavallo L, Minenkov Y, Batisse C, Hanquet G, Leroux F, Izzo I. Switchable Diastereoselectivity in the Fluoride-Promoted Vinylogous Mukaiyama–Michael Reaction of 2-[(Trimethylsilyl)oxy]furan Catalyzed by Crown Ethers. J Org Chem 2017; 82:6629-6637. [DOI: 10.1021/acs.joc.7b00743] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Giorgio Della Sala
- Dipartimento
di Chimica e Biologia “A. Zambelli”, Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, SA, Italy
| | - Marina Sicignano
- Dipartimento
di Chimica e Biologia “A. Zambelli”, Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, SA, Italy
| | - Rosaria Schettini
- Dipartimento
di Chimica e Biologia “A. Zambelli”, Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, SA, Italy
| | - Francesco De Riccardis
- Dipartimento
di Chimica e Biologia “A. Zambelli”, Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, SA, Italy
| | - Luigi Cavallo
- Physical
Sciences and Engineering Division, King Abdullah University of Science and Technology, KAUST Catalysis Center, Thuwal 23955-6900, Saudi Arabia
| | - Yury Minenkov
- Physical
Sciences and Engineering Division, King Abdullah University of Science and Technology, KAUST Catalysis Center, Thuwal 23955-6900, Saudi Arabia
| | - Chloé Batisse
- Dipartimento
di Chimica e Biologia “A. Zambelli”, Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, SA, Italy
- CNRS,
Laboratoire de Chimie Moléculaire UMR 7509 ECPM, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg, France
| | - Gilles Hanquet
- CNRS,
Laboratoire de Chimie Moléculaire UMR 7509 ECPM, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg, France
| | - Frédéric Leroux
- CNRS,
Laboratoire de Chimie Moléculaire UMR 7509 ECPM, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg, France
| | - Irene Izzo
- Dipartimento
di Chimica e Biologia “A. Zambelli”, Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, SA, Italy
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Yoshida M, Kubara A, Hara S. Primary β-Amino Acid Salt-catalyzed Asymmetric Michael Addition of Benzoylacetates to Cyclic Enones and Its Application for the Synthesis of Enantioenriched 1,5-Diketones. CHEM LETT 2013. [DOI: 10.1246/cl.2013.180] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Masanori Yoshida
- Division of Chemical Process Engineering, Faculty of Engineering, Hokkaido University
- Molecular Chemistry and Engineering Course, Graduate School of Chemical Sciences and Engineering, Hokkaido University
| | - Ami Kubara
- Molecular Chemistry and Engineering Course, Graduate School of Chemical Sciences and Engineering, Hokkaido University
| | - Shoji Hara
- Division of Chemical Process Engineering, Faculty of Engineering, Hokkaido University
- Molecular Chemistry and Engineering Course, Graduate School of Chemical Sciences and Engineering, Hokkaido University
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6
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Gawronski J, Wascinska N, Gajewy J. Recent progress in Lewis base activation and control of stereoselectivity in the additions of trimethylsilyl nucleophiles. Chem Rev 2009; 108:5227-52. [PMID: 18850749 DOI: 10.1021/cr800421c] [Citation(s) in RCA: 251] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jacek Gawronski
- Department of Chemistry, A. Mickiewicz University, Poznań, Poland
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Chintareddy VR, Wadhwa K, Verkade JG. P(PhCH2NCH2CH2)3N Catalysis of Mukaiyama Aldol Reactions of Aliphatic, Aromatic, and Heterocyclic Aldehydes and Trifluoromethyl Phenyl Ketone. J Org Chem 2009; 74:8118-32. [DOI: 10.1021/jo901571y] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Kuldeep Wadhwa
- Department of Chemistry, Gilman Hall, Iowa State University, Ames, Iowa 50011
| | - John G. Verkade
- Department of Chemistry, Gilman Hall, Iowa State University, Ames, Iowa 50011
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Yanagisawa A, Takahashi H, Arai T. One-pot synthesis of 1,5-diketones catalyzed by barium isopropoxide. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.04.079] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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9
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10
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Reingold ID, Bowerman C, John M, Walters RS, Daglen BC, Butterfield AM, Gembický M. An acid-catalyzed Michael–aldol reaction. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2005.12.115] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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Nakagawa T, Fujisawa H, Nagata Y, Mukaiyama T. Lewis Base-Catalyzed Michael Reactions between Trimethylsilyl Enolate and α,β-Unsaturated Carbonyl Compounds. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2005. [DOI: 10.1246/bcsj.78.236] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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12
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Yasuda M, Chiba K, Ohigashi N, Katoh Y, Baba A. Michael addition of stannyl ketone enolate to alpha,beta-unsaturated esters catalyzed by tetrabutylammonium bromide and an ab initio theoretical study of the reaction course. J Am Chem Soc 2003; 125:7291-300. [PMID: 12797803 DOI: 10.1021/ja028853+] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Michael addition of stannyl ketone enolates to alpha,beta-unsaturated esters was accomplished in the presence of a catalytic amount of tetrabutylammonium bromide (Bu(4)NBr). Other typical systems using lithium enolate or silyl enolate with catalysts (TiCl(4) or Bu(4)NF) failed to give the desired products. The bromide anion from Bu(4)NBr coordinates to the tin center in enolate to accelerate the conjugate addition where a five-coordinated tin species was generated. The coordination of the bromide anion significantly raises the HOMO level of tin enolate and enhances its nucleophilicity. The conjugate addition provides the intermediate Michael adduct, which has an ester enolate moiety, and the adduct immediately transforms to alpha-stannyl gamma-ketoester by keto-enol tautomerization. This step contributes to the stabilization of the product system and leads to a thermodynamically favorable reaction course. An ab initio calculation reveals that the activation energy in the reaction using the bromide anion is lower than that of the reaction without using it. The transition state in either reaction course has a linear structure, not a cyclic one. This system can be applied to a variety of tin enolates and alpha,beta-unsaturated carbonyls involving enoates, enones, and unsaturated amides.
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Affiliation(s)
- Makoto Yasuda
- Department of Molecular Chemistry and Handai Frontier Research Center, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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Mukaiyama T, Nakagawa T, Fujisawa H. Lewis Base Catalyzed Michael Reaction between Ketene Silyl Acetals and α,β-Unsaturated Carbonyl Compounds. CHEM LETT 2003. [DOI: 10.1246/cl.2003.56] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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14
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15
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Yasuda M, Ohigashi N, Shibata I, Baba A. The First Michael Addition of Metal Ketone Enolates to α,β-Unsaturated Esters under Catalytic Conditions: Tin Enolate with a Catalytic Amount of Tetrabutylammonium Bromide. J Org Chem 1999. [DOI: 10.1021/jo990062b] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Makoto Yasuda
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Noriyuki Ohigashi
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Ikuya Shibata
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Akio Baba
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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Magnus P, Lacour J, Evans PA, Rigollier P, Tobler H. Applications of the β-Azidonation Reaction to Organic Synthesis. α,β-Enones, Conjugate Addition, and γ-Lactam Annulation. J Am Chem Soc 1998. [DOI: 10.1021/ja9829564] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Philip Magnus
- Contribution from the Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, Texas 78712
| | - Jérôme Lacour
- Contribution from the Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, Texas 78712
| | - P. Andrew Evans
- Contribution from the Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, Texas 78712
| | - Pascal Rigollier
- Contribution from the Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, Texas 78712
| | - Hans Tobler
- Contribution from the Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, Texas 78712
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17
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Swamy VM, Sarkar A. Alkali metal hydride or aqueous hydroxide induced conjugate addition of trimethylsilyl enol ethers to enones. A convenient alternative to Lewis acid mediated reaction. Tetrahedron Lett 1998. [DOI: 10.1016/s0040-4039(97)10771-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Chambers RJ, Marfat A. Aldol condensation of 6-alkoxy-2,2-dimethylchroman-4-ones with substituted benzaldehydes using tetramethylorthosilicate and potassium fluoride. J Heterocycl Chem 1995. [DOI: 10.1002/jhet.5570320451] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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19
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Higuchi K, Onaka M, Izumi Y. Solid Acid and Base-Catalyzed Cyanosilylation of Carbonyl Compounds with Cyanotrimethylsilane. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1993. [DOI: 10.1246/bcsj.66.2016] [Citation(s) in RCA: 84] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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21
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Sato T, Wakahara Y, Otera J, Nozaki H. Organotin triflate as practical catalyst for Michael addition of enol silyl ethers. Tetrahedron 1991. [DOI: 10.1016/s0040-4020(01)80717-1] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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22
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23
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Chuit C, Corriu RJ, Reyé C. On the nucleophilic activation of silyl enol ethers and esters; a survey and mechanistic interpretation. J Organomet Chem 1988. [DOI: 10.1016/0022-328x(88)87070-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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24
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Furin G, Vyazankina O, Gostevsky B, Vyazankin N. Tetrahedron report number 234 Synthetic aspects of the use of organosilicon compounds under nucleophilic catalysis conditions. Tetrahedron 1988. [DOI: 10.1016/s0040-4020(88)90008-7] [Citation(s) in RCA: 102] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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25
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Chuit C, Corriu R, Perz R, Reye C. Reactions de michael sur des amides α,β insatures activees par le systeme CsF/Si(OCH3)4. Tetrahedron 1986. [DOI: 10.1016/s0040-4020(01)90609-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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27
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Fiorenza M, Mordini A, Papaleo S, Pastorelli S, Ricci A. Fluoride ion induced reactions of organosilanes: the preparation of mono and dicarbonyl compounds from β-ketosilanes. Tetrahedron Lett 1985. [DOI: 10.1016/s0040-4039(00)89137-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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Boyer J, Corriu R, Perz R, Reye C. Extension de la reaction de Michael en presence de CsF/Si(OR)4. Tetrahedron 1983. [DOI: 10.1016/s0040-4020(01)97636-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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30
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Corriu R, Perz R, Reye C. Activation of silicon-hydrogen, silicon-oxygen, silicon-nitrogen bonds in heterogeneous phase. Tetrahedron 1983. [DOI: 10.1016/s0040-4020(01)88599-9] [Citation(s) in RCA: 160] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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31
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Corriu RJ, Huynh V, Moreau JJ, Pataud-Sat M. N,N-bis(silyl)enamines as protected primary vinylamines. Nucleophilic activation of the siliconnitrogen bond. Tetrahedron Lett 1982. [DOI: 10.1016/s0040-4039(00)87585-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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32
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Boyer J, Corriu R, Perz R, Reye C. Reduction selective de composes carbonyles par catalyse heterogene a la surface des sels. Tetrahedron 1981. [DOI: 10.1016/s0040-4020(01)97975-x] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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