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Shrestha ML, Qi W, McIntosh MC. Acyclic 1,4-Stereocontrol via the Allylic Diazene Rearrangement: Development, Applications, and the Essential Role of Kinetic E Stereoselectivity in Tosylhydrazone Formation. J Org Chem 2017; 82:8359-8370. [PMID: 28776373 DOI: 10.1021/acs.joc.7b00428] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report full details of a method for 1,3-reductive transposition of α-alkoxy-α,β-unsaturated hydrazones to provide E-alkenes with high 1,4-stereocontrol between the two respective allylic stereocenters. The process couples a chelation-controlled reduction of the hydrazone with an in situ allylic strain controlled retro-ene reaction of an allyl diazene, i.e., an allylic diazene rearrangement. Such stereotriads are frequently observed motifs in natural products. We observed a fortuitous kinetic preference for the E-hydrazone geometry during the hydrazonation reaction, as only the E-isomers could undergo chelation-controlled reduction.
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Affiliation(s)
- Maha L Shrestha
- University of Arkansas , 119 Chemistry Bldg, Fayetteville, Arkansas 72701, United States
| | - Wei Qi
- University of Arkansas , 119 Chemistry Bldg, Fayetteville, Arkansas 72701, United States
| | - Matthias C McIntosh
- University of Arkansas , 119 Chemistry Bldg, Fayetteville, Arkansas 72701, United States
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Bunev AS, Vasiliev MA, Statsyuk VE, Ostapenko GI, Peregudov AS. Synthesis of 1-aryl-4-tosyl-5-(trifluoromethyl)-1H-imidazoles. J Fluor Chem 2014. [DOI: 10.1016/j.jfluchem.2014.04.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Ojima I. Exploration of fluorine chemistry at the multidisciplinary interface of chemistry and biology. J Org Chem 2013; 78:6358-83. [PMID: 23614876 PMCID: PMC3752428 DOI: 10.1021/jo400301u] [Citation(s) in RCA: 150] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Over the last three decades, my engagement in "fluorine chemistry" has evolved substantially because of the multidisciplinary nature of the research programs. I began my research career as a synthetic chemist in organometallic chemistry and homogeneous catalysis directed toward organic synthesis. Then, I was brought into a very unique world of "fluorine chemistry" in the end of 1970s. I started exploring the interface of fluorine chemistry and transition metal homogeneous catalysis first, which was followed by amino acids, peptides, and peptidomimetics for medicinal chemistry. Since then, I have been exploring the interfaces of fluorine chemistry and multidisciplinary fields of research involving medicinal chemistry, chemical biology, cancer biology, and molecular imaging. This perspective intends to cover my fruitful endeavor in the exploration of fluorine chemistry at the multidisciplinary interface of chemistry and biology in a chronological order to show the evolution of my research interest and strategy.
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Affiliation(s)
- Iwao Ojima
- Department of Chemistry and Institute of Chemical Biology & Drug Discovery, Stony Brook University, Stony Brook, New York 11794-3400, USA.
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5
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Veeraswamy S, Reddy KI, Ragavan RV, Yennam S, Jayashree A. Ethyl Imidazole-1-carboxylate (EImC) as a Carbonylating Agent: Efficient Synthesis of Oxazolidin-2-ones from Amino Alcohols. CHEM LETT 2013. [DOI: 10.1246/cl.2013.109] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- S. Veeraswamy
- Chemistry Services, GVK Biosciences Pvt. Ltd
- Centre for Chemical Sciences and Technology, Institute of Science and Technology, Jawaharlal Nehru Technological University
| | | | | | | | - A. Jayashree
- Centre for Chemical Sciences and Technology, Institute of Science and Technology, Jawaharlal Nehru Technological University
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Shevchuk MV, Kukhar VP, Röschenthaler GV, Bassil BS, Kawada K, Soloshonok VA, Sorochinsky AE. New asymmetric approach to β-trifluoromethyl isoserines. RSC Adv 2013. [DOI: 10.1039/c3ra40687c] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Simon J, Chelain E, Brigaud T. Highly Diastereoselective Synthesis of Enantiopure β-Trifluoromethyl β-Amino Alcohols from Chiral Trifluoromethyl Oxazolidines (Fox). Org Lett 2011; 14:604-7. [DOI: 10.1021/ol2032174] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Julien Simon
- Laboratoire “Synthèse Organique Sélective et Chimie bioOrganique” (SOSCO), Université de Cergy-Pontoise, 5 Mail Gay-Lussac 95000 Cergy-Pontoise cedex, France
| | - Evelyne Chelain
- Laboratoire “Synthèse Organique Sélective et Chimie bioOrganique” (SOSCO), Université de Cergy-Pontoise, 5 Mail Gay-Lussac 95000 Cergy-Pontoise cedex, France
| | - Thierry Brigaud
- Laboratoire “Synthèse Organique Sélective et Chimie bioOrganique” (SOSCO), Université de Cergy-Pontoise, 5 Mail Gay-Lussac 95000 Cergy-Pontoise cedex, France
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Wan W, Hou J, Jiang H, Yuan Z, Ma G, Zhao G, Hao J. Reductive Amination/Cyclization of ω-Trifluoromethyl Keto Esters to Trifluoromethylated δ-Amino Alcohols and Lactams. European J Org Chem 2010. [DOI: 10.1002/ejoc.200901424] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Pytkowicz J, Stéphany O, Marinkovic S, Inagaki S, Brigaud T. Straightforward synthesis of enantiopure (R)- and (S)-trifluoroalaninol. Org Biomol Chem 2010; 8:4540-2. [DOI: 10.1039/c0ob00424c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Boyer N, Gloanec P, De Nanteuil G, Jubault P, Quirion JC. Synthesis of α,α-Difluoro-β-amino Esters orgem-Difluoro-β-lactams as Potential Metallocarboxypeptidase Inhibitors. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800363] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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11
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Levin VV, Dilman AD, Belyakov PA, Korlyukov AA, Struchkova MI, Tartakovsky VA. Pentafluorophenylation of β-aminoacrylates. MENDELEEV COMMUNICATIONS 2007. [DOI: 10.1016/j.mencom.2007.03.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Pang W, Zhu S, jiang H, Zhu S. Transition metal-catalyzed formation of CF3-substituted α,β-unsaturated alkene and the synthesis of α-trifluoromethyl substituted β-amino ester. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.09.041] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Kuznetsova L, Ungureanu IM, Pepe A, Zanardi I, Wu X, Ojima I. Trifluoromethyl- and difluoromethyl-β-lactams as useful building blocks for the synthesis of fluorinated amino acids, dipeptides, and fluoro-taxoids. J Fluor Chem 2004. [DOI: 10.1016/j.jfluchem.2003.12.001] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Miyata O, Koizumi T, Asai H, Iba R, Naito T. Imino 1,2-Wittig rearrangement of hydroximates and its application to synthesis of cytoxazone. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.02.048] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Kim S, Kavali R. Radical-mediated synthesis of trifluoroethyl amines and trifluoromethyl ketones from alkyl iodides. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)01675-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Ohkura H, Handa M, Katagiri T, Uneyama K. Diastereoselective synthesis of S-tert-butyl-beta-(trifluoromethyl)isocysteine. J Org Chem 2002; 67:2692-5. [PMID: 11950320 DOI: 10.1021/jo016108u] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Both diastereoisomers of S-tert-butyl-beta-(trifluoromethyl)isocysteine have been synthesized stereoselectively by the sequential reactions of trifluoroacetimidoyl chloride with the lithium enolate of tert-butyl alpha-tert-butylthioacetate, followed by the diastereoselective reduction of the imino group with sodium borohydride in the presence of zinc(II) or di(ethylene glycol) dimethyl ether, and finally by the deprotection of N-aryl and tert-butyl ester groups.
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Affiliation(s)
- Hironari Ohkura
- Department of Applied Chemistry, Faculty of Engineering, Okayama University, Okayama 700-8530, Japan
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Sergeeva NN, Golubev AS, Hennig L, Findeisen M, Paetzold E, Oehme G, Burger K. An improved approach to trifluoromethyl substituted Morita–Baylis–Hillman adduct: Fluorinated dehydro-β-amino acids. J Fluor Chem 2001. [DOI: 10.1016/s0022-1139(01)00434-1] [Citation(s) in RCA: 18] [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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Vera-Ayoso Y, Borrachero P, Cabrera-Escribano F, Diánez MJ, Estrada MD, Gómez-Guillén M, López-Castro A, Pérez-Garrido S. Towards cyclic, conformationally constrained, fluorine-containing β-amino acid derivatives from d-glucose. ACTA ACUST UNITED AC 2001. [DOI: 10.1016/s0957-4166(01)00354-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Fustero S, Salavert E, Pina B, Ramı́rez de Arellano C, Asensio A. Novel strategy for the synthesis of fluorinated β-amino acid derivatives from Δ2-oxazolines. Tetrahedron 2001. [DOI: 10.1016/s0040-4020(01)00539-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Uneyama K, Ohkura H, Hao J, Amii H. A trial toward the synthesis of gamma-fluorinated beta-amino-alpha-thiohydroxyamino acid: a finding of desulfurizative C-C bond formation in thio-Wittig-type rearrangement of S-(N-aryl-trifluoroacetimidoyl)thioglycolates. J Org Chem 2001; 66:1026-9. [PMID: 11430067 DOI: 10.1021/jo0010330] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- K Uneyama
- Department of Applied Chemistry, Faculty of Engineering, Okayama University, Okayama 700-8530, Japan.
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Fustero S, Pina B, García de la Torre M, Navarro A, Ramírez de Arellano C, Simón A. First Highly Diastereoselective Synthesis of syn α-Methyl β-Fluoroalkyl β-Amino Esters. Org Lett 1999. [DOI: 10.1021/ol990774o] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Santos Fustero
- Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Valencia, 46100-Burjassot (Valencia), Spain
| | - Belén Pina
- Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Valencia, 46100-Burjassot (Valencia), Spain
| | - Marta García de la Torre
- Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Valencia, 46100-Burjassot (Valencia), Spain
| | - Antonio Navarro
- Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Valencia, 46100-Burjassot (Valencia), Spain
| | - Carmen Ramírez de Arellano
- Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Valencia, 46100-Burjassot (Valencia), Spain
| | - Antonio Simón
- Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Valencia, 46100-Burjassot (Valencia), Spain
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Uneyama K. Chemistries of trifluoroacetimidoyl halides: preparation, reactions, and applications for the synthesis of fluorinated heterocycles. J Fluor Chem 1999. [DOI: 10.1016/s0022-1139(99)00059-7] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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27
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Bravo P, Crucianelli M, Ono T, Zanda M. Synthesis and biological activity of β-fluoroalkyl β-amino alcohols. J Fluor Chem 1999. [DOI: 10.1016/s0022-1139(99)00024-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Volonterio A, Vergani B, Crucianelli M, Zanda M, Bravo P. (R)-Trifluoro- and Difluoropyruvaldehyde N,S-Ketals: Chiral Synthetic Equivalents of beta-Trifluoro and beta-Difluoro alpha-Amino Aldehydes. J Org Chem 1998; 63:7236-7243. [PMID: 11672366 DOI: 10.1021/jo980602p] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new, efficient, and stereoselective two-step approach to stereochemically defined chiral nonracemic gamma-tri- and gamma-difluoro beta-amino alcohols (70% to >95% ee) is described, using tri- and difluoropyruvaldehyde N,S-ketals (R)-1a,b as starting materials. Addition of Grignard reagents to (R)-1 occurs with moderate to excellent anti-stereocontrol, depending on the nature of the organomagnesium halides, providing the beta-p-tolylthio beta-benzyloxycarbonylamino secondary carbinols 5. The stereochemical outcome of these reactions can be rationalized by means of a chelated Cram's cyclic model, where the NCbz group is the chelating ligand and the p-tolylthio residue acts as the stereocontrolling "large" group. Reductive displacement of the 2-p-tolylthio substituent of 5 efficiently takes places by means of the NaBH(4)/pyridine system, probably via the corresponding intermediate transient imines 13, providing sulfur-free gamma-tri- and gamma-difluorinated beta-amino alcohols 7 with high levels of anti-stereoselectivity. A considerable shift toward syn-stereoselectivity was obtained performing the reaction on the corresponding phenylacetates 8. Cleavage and reduction of the NHCbz moiety of 7 provided tri- and difluoro analogues of, respectively, norephedrine (11) and ephedrine (12).
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Affiliation(s)
- Alessandro Volonterio
- C.N.R.-Centro di Studio per le Sostanze Organiche Naturali, Via Mancinelli 7, I-20131 Milano, Italy
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